TY  - JOUR
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Bajuk-Bogdanović, Danica
AU  - Pašti, Igor
AU  - Erčić, Jelena
AU  - Stoiljković, Milovan
AU  - Jovanović, Zoran M.
AU  - Skuratov, Vladimir
AU  - Jovanović, Sonja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13420
AB  - We report a detailed study about the correlation between the physicochemical properties of solvothermally synthesized pristine and 1 %, 2.5 %, and 5 % Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) with its phase composition. The effect of the dopant and the duration of synthesis (8 h and 20 h) on the physicochemical properties of BVO allowed us to tune the ratio of monoclinic scheelite to tetragonal zircon phase in BVO powders. This approach helped us to establish the relationship between the presence of monoclinic scheelite or tetragonal zircon phase with structural, morphological and optical properties of BVO powders, obtained by different physicochemical methods (e.g. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Diffuse Reflectance Spectroscopy (DRS) and Photoluminescence spectroscopy (PL)). The results indicated that, in addition to XRD, Raman, and DRS, several other methods could distinguish between the two phases. For example, SEM analysis revealed that monoclinic scheelite BVO exhibits either elongated assemblies of cube-like particles or prismatic particles with sizes ∼500 nm. In contrast, tetragonal zircon BVO exclusively exhibited porous spherical particles with diameter ∼2 μm. DRS and Raman spectroscopy indicated that there is a possibility of distinguishing between the two phases if their shares are large enough. For instance, monoclinic BVO showed band gap values in the range of 2.35–2.52 eV, while tetragonal zircon BVO exhibited values in the range of 2.80–3.00 eV. XPS showed a correlation between phase composition and surface chemistry of BVO only for Cu-doped samples, revealing the presence of Cu+ in monoclinic BVO and the presence of both Cu+ and Cu2+ in tetragonal zircon BVO. PL showed that monoclinic scheelite BVO displayed decreased charge recombination compared to tetragonal zircon BVO. Deeper insight into the correlation between the physicochemical properties and phase composition of Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) was based on water/pentanol medium (2:1 vol%) as a novel synthesis pathway. This may open new avenues for the broader methodological exploration of surface chemistry, particle size, and morphology of BVO particles through the use of diverse functionalization agents. Finally, the established links between phase composition and structural, morphological, and other physicochemical properties provide new and more predictable opportunities for further improvement of BVO properties for various applications.
T2  - Ceramics International
T1  - Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate
IS  - InPress
DO  - 10.1016/j.ceramint.2024.06.374
ER  - 

@article{
author = "Jelić, Marko and Korneeva, Ekaterina and Bajuk-Bogdanović, Danica and Pašti, Igor and Erčić, Jelena and Stoiljković, Milovan and Jovanović, Zoran M. and Skuratov, Vladimir and Jovanović, Sonja",
year = "2024",
abstract = "We report a detailed study about the correlation between the physicochemical properties of solvothermally synthesized pristine and 1 %, 2.5 %, and 5 % Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) with its phase composition. The effect of the dopant and the duration of synthesis (8 h and 20 h) on the physicochemical properties of BVO allowed us to tune the ratio of monoclinic scheelite to tetragonal zircon phase in BVO powders. This approach helped us to establish the relationship between the presence of monoclinic scheelite or tetragonal zircon phase with structural, morphological and optical properties of BVO powders, obtained by different physicochemical methods (e.g. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Diffuse Reflectance Spectroscopy (DRS) and Photoluminescence spectroscopy (PL)). The results indicated that, in addition to XRD, Raman, and DRS, several other methods could distinguish between the two phases. For example, SEM analysis revealed that monoclinic scheelite BVO exhibits either elongated assemblies of cube-like particles or prismatic particles with sizes ∼500 nm. In contrast, tetragonal zircon BVO exclusively exhibited porous spherical particles with diameter ∼2 μm. DRS and Raman spectroscopy indicated that there is a possibility of distinguishing between the two phases if their shares are large enough. For instance, monoclinic BVO showed band gap values in the range of 2.35–2.52 eV, while tetragonal zircon BVO exhibited values in the range of 2.80–3.00 eV. XPS showed a correlation between phase composition and surface chemistry of BVO only for Cu-doped samples, revealing the presence of Cu+ in monoclinic BVO and the presence of both Cu+ and Cu2+ in tetragonal zircon BVO. PL showed that monoclinic scheelite BVO displayed decreased charge recombination compared to tetragonal zircon BVO. Deeper insight into the correlation between the physicochemical properties and phase composition of Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) was based on water/pentanol medium (2:1 vol%) as a novel synthesis pathway. This may open new avenues for the broader methodological exploration of surface chemistry, particle size, and morphology of BVO particles through the use of diverse functionalization agents. Finally, the established links between phase composition and structural, morphological, and other physicochemical properties provide new and more predictable opportunities for further improvement of BVO properties for various applications.",
journal = "Ceramics International",
title = "Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate",
number = "InPress",
doi = "10.1016/j.ceramint.2024.06.374"
}

Jelić, M., Korneeva, E., Bajuk-Bogdanović, D., Pašti, I., Erčić, J., Stoiljković, M., Jovanović, Z. M., Skuratov, V.,& Jovanović, S.. (2024). Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate. in Ceramics International(InPress).
https://doi.org/10.1016/j.ceramint.2024.06.374

Jelić M, Korneeva E, Bajuk-Bogdanović D, Pašti I, Erčić J, Stoiljković M, Jovanović ZM, Skuratov V, Jovanović S. Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate. in Ceramics International. 2024;(InPress).
doi:10.1016/j.ceramint.2024.06.374 .

Jelić, Marko, Korneeva, Ekaterina, Bajuk-Bogdanović, Danica, Pašti, Igor, Erčić, Jelena, Stoiljković, Milovan, Jovanović, Zoran M., Skuratov, Vladimir, Jovanović, Sonja, "Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate" in Ceramics International, no. InPress (2024),
https://doi.org/10.1016/j.ceramint.2024.06.374 . .

TY  - JOUR
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Bajuk-Bogdanović, Danica
AU  - Pašti, Igor
AU  - Erčić, Jelena
AU  - Stoiljković, Milovan
AU  - Jovanović, Zoran M.
AU  - Skuratov, Vladimir
AU  - Jovanović, Sonja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13624
AB  - We report a detailed study about the correlation between the physicochemical properties of solvothermally synthesized pristine and 1 %, 2.5 %, and 5 % Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) with its phase composition. The effect of the dopant and the duration of synthesis (8 h and 20 h) on the physicochemical properties of BVO allowed us to tune the ratio of monoclinic scheelite to tetragonal zircon phase in BVO powders. This approach helped us to establish the relationship between the presence of monoclinic scheelite or tetragonal zircon phase with structural, morphological and optical properties of BVO powders, obtained by different physicochemical methods (e.g. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Diffuse Reflectance Spectroscopy (DRS) and Photoluminescence spectroscopy (PL)). The results indicated that, in addition to XRD, Raman, and DRS, several other methods could distinguish between the two phases. For example, SEM analysis revealed that monoclinic scheelite BVO exhibits either elongated assemblies of cube-like particles or prismatic particles with sizes ∼500 nm. In contrast, tetragonal zircon BVO exclusively exhibited porous spherical particles with diameter ∼2 μm. DRS and Raman spectroscopy indicated that there is a possibility of distinguishing between the two phases if their shares are large enough. For instance, monoclinic BVO showed band gap values in the range of 2.35–2.52 eV, while tetragonal zircon BVO exhibited values in the range of 2.80–3.00 eV. XPS showed a correlation between phase composition and surface chemistry of BVO only for Cu-doped samples, revealing the presence of Cu+ in monoclinic BVO and the presence of both Cu+ and Cu2+ in tetragonal zircon BVO. PL showed that monoclinic scheelite BVO displayed decreased charge recombination compared to tetragonal zircon BVO. Deeper insight into the correlation between the physicochemical properties and phase composition of Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) was based on water/pentanol medium (2:1 vol%) as a novel synthesis pathway. This may open new avenues for the broader methodological exploration of surface chemistry, particle size, and morphology of BVO particles through the use of diverse functionalization agents. Finally, the established links between phase composition and structural, morphological, and other physicochemical properties provide new and more predictable opportunities for further improvement of BVO properties for various applications.
T2  - Ceramics International
T1  - Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate
IS  - InPress
DO  - 10.1016/j.ceramint.2024.06.374
ER  - 

@article{
author = "Jelić, Marko and Korneeva, Ekaterina and Bajuk-Bogdanović, Danica and Pašti, Igor and Erčić, Jelena and Stoiljković, Milovan and Jovanović, Zoran M. and Skuratov, Vladimir and Jovanović, Sonja",
year = "2024",
abstract = "We report a detailed study about the correlation between the physicochemical properties of solvothermally synthesized pristine and 1 %, 2.5 %, and 5 % Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) with its phase composition. The effect of the dopant and the duration of synthesis (8 h and 20 h) on the physicochemical properties of BVO allowed us to tune the ratio of monoclinic scheelite to tetragonal zircon phase in BVO powders. This approach helped us to establish the relationship between the presence of monoclinic scheelite or tetragonal zircon phase with structural, morphological and optical properties of BVO powders, obtained by different physicochemical methods (e.g. X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Raman spectroscopy, X-ray Photoelectron Spectroscopy (XPS), Diffuse Reflectance Spectroscopy (DRS) and Photoluminescence spectroscopy (PL)). The results indicated that, in addition to XRD, Raman, and DRS, several other methods could distinguish between the two phases. For example, SEM analysis revealed that monoclinic scheelite BVO exhibits either elongated assemblies of cube-like particles or prismatic particles with sizes ∼500 nm. In contrast, tetragonal zircon BVO exclusively exhibited porous spherical particles with diameter ∼2 μm. DRS and Raman spectroscopy indicated that there is a possibility of distinguishing between the two phases if their shares are large enough. For instance, monoclinic BVO showed band gap values in the range of 2.35–2.52 eV, while tetragonal zircon BVO exhibited values in the range of 2.80–3.00 eV. XPS showed a correlation between phase composition and surface chemistry of BVO only for Cu-doped samples, revealing the presence of Cu+ in monoclinic BVO and the presence of both Cu+ and Cu2+ in tetragonal zircon BVO. PL showed that monoclinic scheelite BVO displayed decreased charge recombination compared to tetragonal zircon BVO. Deeper insight into the correlation between the physicochemical properties and phase composition of Cu, Mo, and W-doped bismuth vanadate (BiVO4, BVO) was based on water/pentanol medium (2:1 vol%) as a novel synthesis pathway. This may open new avenues for the broader methodological exploration of surface chemistry, particle size, and morphology of BVO particles through the use of diverse functionalization agents. Finally, the established links between phase composition and structural, morphological, and other physicochemical properties provide new and more predictable opportunities for further improvement of BVO properties for various applications.",
journal = "Ceramics International",
title = "Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate",
number = "InPress",
doi = "10.1016/j.ceramint.2024.06.374"
}

Jelić, M., Korneeva, E., Bajuk-Bogdanović, D., Pašti, I., Erčić, J., Stoiljković, M., Jovanović, Z. M., Skuratov, V.,& Jovanović, S.. (2024). Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate. in Ceramics International(InPress).
https://doi.org/10.1016/j.ceramint.2024.06.374

Jelić M, Korneeva E, Bajuk-Bogdanović D, Pašti I, Erčić J, Stoiljković M, Jovanović ZM, Skuratov V, Jovanović S. Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate. in Ceramics International. 2024;(InPress).
doi:10.1016/j.ceramint.2024.06.374 .

Jelić, Marko, Korneeva, Ekaterina, Bajuk-Bogdanović, Danica, Pašti, Igor, Erčić, Jelena, Stoiljković, Milovan, Jovanović, Zoran M., Skuratov, Vladimir, Jovanović, Sonja, "Correlation between phase composition and physicochemical properties in Cu-, Mo-, and W- doped bismuth vanadate" in Ceramics International, no. InPress (2024),
https://doi.org/10.1016/j.ceramint.2024.06.374 . .

TY  - CONF
AU  - Stolić, Predrag
AU  - Milošević, Danijela
AU  - Jovanović, Zoran M.
AU  - Petković, Darija
AU  - Jovanović, Sonja
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13360
AB  - Today, modern teaching relies heavily on the use of different software solutions, and modern teaching processes partly require the application of home learning concepts, which imply the application of those software solutions on personal student computer resources. By trying to provide software environments identical to those within higher education institutions, certain problems were identified that should be overcome in order to ensure the quality of the teaching process. The paper presents a possible solution based on the features provided by free and open source software (FOSS) and which enables easy and practical implementation of a uniform software environment for each student, regardless of the personal computer environment that is currently in use.
PB  - Beograd : Društvo za ETRAN
PB  - Beograd : Akademska misao
C3  - ETRAN : 68th Conference ETRAN and 11th International Conference IcETRAN 2024 : Program and Book of Abstracts
T1  - The Use of FOSS-Based Solutions as a Response to the Challenges of Using Software in the Teaching Processes of Higher Education
SP  - 89
EP  - 89
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13360
ER  - 

@conference{
author = "Stolić, Predrag and Milošević, Danijela and Jovanović, Zoran M. and Petković, Darija and Jovanović, Sonja",
year = "2024",
abstract = "Today, modern teaching relies heavily on the use of different software solutions, and modern teaching processes partly require the application of home learning concepts, which imply the application of those software solutions on personal student computer resources. By trying to provide software environments identical to those within higher education institutions, certain problems were identified that should be overcome in order to ensure the quality of the teaching process. The paper presents a possible solution based on the features provided by free and open source software (FOSS) and which enables easy and practical implementation of a uniform software environment for each student, regardless of the personal computer environment that is currently in use.",
publisher = "Beograd : Društvo za ETRAN, Beograd : Akademska misao",
journal = "ETRAN : 68th Conference ETRAN and 11th International Conference IcETRAN 2024 : Program and Book of Abstracts",
title = "The Use of FOSS-Based Solutions as a Response to the Challenges of Using Software in the Teaching Processes of Higher Education",
pages = "89-89",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13360"
}

Stolić, P., Milošević, D., Jovanović, Z. M., Petković, D.,& Jovanović, S.. (2024). The Use of FOSS-Based Solutions as a Response to the Challenges of Using Software in the Teaching Processes of Higher Education. in ETRAN : 68th Conference ETRAN and 11th International Conference IcETRAN 2024 : Program and Book of Abstracts
Beograd : Društvo za ETRAN., 89-89.
https://hdl.handle.net/21.15107/rcub_vinar_13360

Stolić P, Milošević D, Jovanović ZM, Petković D, Jovanović S. The Use of FOSS-Based Solutions as a Response to the Challenges of Using Software in the Teaching Processes of Higher Education. in ETRAN : 68th Conference ETRAN and 11th International Conference IcETRAN 2024 : Program and Book of Abstracts. 2024;:89-89.
https://hdl.handle.net/21.15107/rcub_vinar_13360 .

Stolić, Predrag, Milošević, Danijela, Jovanović, Zoran M., Petković, Darija, Jovanović, Sonja, "The Use of FOSS-Based Solutions as a Response to the Challenges of Using Software in the Teaching Processes of Higher Education" in ETRAN : 68th Conference ETRAN and 11th International Conference IcETRAN 2024 : Program and Book of Abstracts (2024):89-89,
https://hdl.handle.net/21.15107/rcub_vinar_13360 .

TY  - CONF
AU  - Stolić, P.
AU  - Petrović, S.
AU  - Dimitrijević, S.
AU  - Jovanović, Z.
AU  - Radovanović, I.
AU  - Petronić, S.
AU  - Stević, Z.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13358
AB  - Today, monitoring systems, which include the monitoring of a temperature process, are often based, partially or entirely, on the application of thermal imaging procedures. In such systems, thermogram transmission techniques are generally represented via classic LAN or WLAN networks. In this work, instead of applying the usual techniques, the thermogram is transformed into a corresponding set of temperature data that is distributed using the LoRa network.
AB  - Сьогодні системи моніторингу, які включають спостереження за температурним процесом, часто частково або повністю базуються на застосуванні тепловізійних процедур. У таких системах технології передачі термограм зазвичай представлені за допомогою класичних мереж LAN або WLAN. У цій роботі замість застосування звичайних технологій термограма перетворюється на відповідний набір даних про температуру, який поширюється за допомогою мережі LoRa.
PB  - Odesa: Політехперіодика
C3  - MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings
T1  - Application of LoRa Network in Permanent Thermal Imaging Monitoring Process
T1  - Застосування мережі LoRa в процесі постійного тепловізійного моніторингу
SP  - 21
EP  - 24
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13358
ER  - 

@conference{
author = "Stolić, P. and Petrović, S. and Dimitrijević, S. and Jovanović, Z. and Radovanović, I. and Petronić, S. and Stević, Z.",
year = "2024",
abstract = "Today, monitoring systems, which include the monitoring of a temperature process, are often based, partially or entirely, on the application of thermal imaging procedures. In such systems, thermogram transmission techniques are generally represented via classic LAN or WLAN networks. In this work, instead of applying the usual techniques, the thermogram is transformed into a corresponding set of temperature data that is distributed using the LoRa network., Сьогодні системи моніторингу, які включають спостереження за температурним процесом, часто частково або повністю базуються на застосуванні тепловізійних процедур. У таких системах технології передачі термограм зазвичай представлені за допомогою класичних мереж LAN або WLAN. У цій роботі замість застосування звичайних технологій термограма перетворюється на відповідний набір даних про температуру, який поширюється за допомогою мережі LoRa.",
publisher = "Odesa: Політехперіодика",
journal = "MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings",
title = "Application of LoRa Network in Permanent Thermal Imaging Monitoring Process, Застосування мережі LoRa в процесі постійного тепловізійного моніторингу",
pages = "21-24",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13358"
}

Stolić, P., Petrović, S., Dimitrijević, S., Jovanović, Z., Radovanović, I., Petronić, S.,& Stević, Z.. (2024). Application of LoRa Network in Permanent Thermal Imaging Monitoring Process. in MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings
Odesa: Політехперіодика., 21-24.
https://hdl.handle.net/21.15107/rcub_vinar_13358

Stolić P, Petrović S, Dimitrijević S, Jovanović Z, Radovanović I, Petronić S, Stević Z. Application of LoRa Network in Permanent Thermal Imaging Monitoring Process. in MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings. 2024;:21-24.
https://hdl.handle.net/21.15107/rcub_vinar_13358 .

Stolić, P., Petrović, S., Dimitrijević, S., Jovanović, Z., Radovanović, I., Petronić, S., Stević, Z., "Application of LoRa Network in Permanent Thermal Imaging Monitoring Process" in MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings (2024):21-24,
https://hdl.handle.net/21.15107/rcub_vinar_13358 .

TY  - CONF
AU  - Mravik, Ž.
AU  - Pejčić, M.
AU  - Petković, D.
AU  - Stolić, P.
AU  - Stević, M.
AU  - Stević, Z.
AU  - Jovanović, Z.
PY  - 2024
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13359
AB  - Easy-to-develop sensing devices are important for modern technology where materials with modifiable properties that are dependent on the environmental conditions play key role. Graphene oxide nanocomposites possess interesting surface chemistry that is closely correlated to their electric properties. In this work, composite of graphene oxide and 12-tungstophosphoric acid was dip coated on interdigital electrode and thermally treated while dependence of its electric properties on environment temperature was examined with impedance spectroscopy. Results outline potential applicability of these materials for temperature sensors.
AB  - Сенсорні пристрої, які легко розробляти, є важливими для сучасних технологій, де ключову роль відіграють матеріали зі змінними властивостями, що залежать від умов навколишнього середовища. Нанокомпозити на основі оксиду графену мають цікаву хімію поверхні, яка тісно корелює з їхніми електричними властивостями. У цій роботі композит з оксиду графену та 12-вольфрамової кислоти наносили на зустрічно-штирьовий електрод і термічно обробляли. Залежність його електричних властивостей від температури середовища досліджували за допомогою імпедансної спектроскопії. Отримані результати вказують на потенційну можливість застосування цих матеріалів для датчиків температури.
PB  - Odesa: Політехперіодика
C3  - MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings
T1  - Temperature Sensors Based on Graphene Oxide and Graphene Oxide / 12 Tungstophosphoric Acid Thin Films on Interdigital Electrodes
T1  - Датчики температури на основі тонких плівок оксиду графену та композиту оксиду графену та 12-воль-фрамофосфорної кислоти на зустрічно-штирьових електродах
SP  - 61
EP  - 64
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13359
ER  - 

@conference{
author = "Mravik, Ž. and Pejčić, M. and Petković, D. and Stolić, P. and Stević, M. and Stević, Z. and Jovanović, Z.",
year = "2024",
abstract = "Easy-to-develop sensing devices are important for modern technology where materials with modifiable properties that are dependent on the environmental conditions play key role. Graphene oxide nanocomposites possess interesting surface chemistry that is closely correlated to their electric properties. In this work, composite of graphene oxide and 12-tungstophosphoric acid was dip coated on interdigital electrode and thermally treated while dependence of its electric properties on environment temperature was examined with impedance spectroscopy. Results outline potential applicability of these materials for temperature sensors., Сенсорні пристрої, які легко розробляти, є важливими для сучасних технологій, де ключову роль відіграють матеріали зі змінними властивостями, що залежать від умов навколишнього середовища. Нанокомпозити на основі оксиду графену мають цікаву хімію поверхні, яка тісно корелює з їхніми електричними властивостями. У цій роботі композит з оксиду графену та 12-вольфрамової кислоти наносили на зустрічно-штирьовий електрод і термічно обробляли. Залежність його електричних властивостей від температури середовища досліджували за допомогою імпедансної спектроскопії. Отримані результати вказують на потенційну можливість застосування цих матеріалів для датчиків температури.",
publisher = "Odesa: Політехперіодика",
journal = "MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings",
title = "Temperature Sensors Based on Graphene Oxide and Graphene Oxide / 12 Tungstophosphoric Acid Thin Films on Interdigital Electrodes, Датчики температури на основі тонких плівок оксиду графену та композиту оксиду графену та 12-воль-фрамофосфорної кислоти на зустрічно-штирьових електродах",
pages = "61-64",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13359"
}

Mravik, Ž., Pejčić, M., Petković, D., Stolić, P., Stević, M., Stević, Z.,& Jovanović, Z.. (2024). Temperature Sensors Based on Graphene Oxide and Graphene Oxide / 12 Tungstophosphoric Acid Thin Films on Interdigital Electrodes. in MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings
Odesa: Політехперіодика., 61-64.
https://hdl.handle.net/21.15107/rcub_vinar_13359

Mravik Ž, Pejčić M, Petković D, Stolić P, Stević M, Stević Z, Jovanović Z. Temperature Sensors Based on Graphene Oxide and Graphene Oxide / 12 Tungstophosphoric Acid Thin Films on Interdigital Electrodes. in MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings. 2024;:61-64.
https://hdl.handle.net/21.15107/rcub_vinar_13359 .

Mravik, Ž., Pejčić, M., Petković, D., Stolić, P., Stević, M., Stević, Z., Jovanović, Z., "Temperature Sensors Based on Graphene Oxide and Graphene Oxide / 12 Tungstophosphoric Acid Thin Films on Interdigital Electrodes" in MІЕТ-2024 : XXV International Scientific-Practical Conference Modern Information and Electronic Technologies : Proceedings (2024):61-64,
https://hdl.handle.net/21.15107/rcub_vinar_13359 .

TY  - CONF
AU  - Mravik, Željko
AU  - Pejčić, Milica
AU  - Rmuš Mravik, Jelena
AU  - Belec, Blaž
AU  - Bajuk-Bogdanović, Danica
AU  - Jovanović, Sonja
AU  - Marković, Smilja
AU  - Gavrilov, Nemanja
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11637
AB  - In recent years graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposites have demonstrated promising potential for electrochemical supercapacitors. However, to enhance their performance, it is necessary to modify the surface chemistry of GO to minimize the influence of basal plane oxygen groups, which hinder the material's conductivity. Additionally, some degree of structural modification of WPA is desired. In this regard, ion beam irradiation presents a promising method to simultaneously optimize surface chemistry of GO and structurally modify WPA. To accomplish this, ion beam irradiation is employed for modification of individual components as well as their nanocomposites with varying mass ratios. Different ion species, fluences and energies were utilized depending on the sample type, ranging from 10 keV C to 710 MeV Bi. Spectroscopy methods were employed to gain insight into the type and degree of structural modification in WPA. A direct correlation is observed between the parameters of the ion beams and the resulting structural changes. As the disordering increases, the structure transitions from partially modified to increased bond breaking, ultimately leading to reconnected bronze-like structures. By increasing the fluence, a gradual modification of the structure and surface chemistry of GO was possible. The effects of irradiation on GO and WPA are particularly pronounced in irradiated composites, where higher capacitance is measured.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors
SP  - 50
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11637
ER  - 

@conference{
author = "Mravik, Željko and Pejčić, Milica and Rmuš Mravik, Jelena and Belec, Blaž and Bajuk-Bogdanović, Danica and Jovanović, Sonja and Marković, Smilja and Gavrilov, Nemanja and Skuratov, Vladimir and Jovanović, Zoran",
year = "2023",
abstract = "In recent years graphene oxide (GO)/12-tungstophosphoric acid (WPA) nanocomposites have demonstrated promising potential for electrochemical supercapacitors. However, to enhance their performance, it is necessary to modify the surface chemistry of GO to minimize the influence of basal plane oxygen groups, which hinder the material's conductivity. Additionally, some degree of structural modification of WPA is desired. In this regard, ion beam irradiation presents a promising method to simultaneously optimize surface chemistry of GO and structurally modify WPA. To accomplish this, ion beam irradiation is employed for modification of individual components as well as their nanocomposites with varying mass ratios. Different ion species, fluences and energies were utilized depending on the sample type, ranging from 10 keV C to 710 MeV Bi. Spectroscopy methods were employed to gain insight into the type and degree of structural modification in WPA. A direct correlation is observed between the parameters of the ion beams and the resulting structural changes. As the disordering increases, the structure transitions from partially modified to increased bond breaking, ultimately leading to reconnected bronze-like structures. By increasing the fluence, a gradual modification of the structure and surface chemistry of GO was possible. The effects of irradiation on GO and WPA are particularly pronounced in irradiated composites, where higher capacitance is measured.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors",
pages = "50",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11637"
}

Mravik, Ž., Pejčić, M., Rmuš Mravik, J., Belec, B., Bajuk-Bogdanović, D., Jovanović, S., Marković, S., Gavrilov, N., Skuratov, V.,& Jovanović, Z.. (2023). Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 50.
https://hdl.handle.net/21.15107/rcub_vinar_11637

Mravik Ž, Pejčić M, Rmuš Mravik J, Belec B, Bajuk-Bogdanović D, Jovanović S, Marković S, Gavrilov N, Skuratov V, Jovanović Z. Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:50.
https://hdl.handle.net/21.15107/rcub_vinar_11637 .

Mravik, Željko, Pejčić, Milica, Rmuš Mravik, Jelena, Belec, Blaž, Bajuk-Bogdanović, Danica, Jovanović, Sonja, Marković, Smilja, Gavrilov, Nemanja, Skuratov, Vladimir, Jovanović, Zoran, "Graphene oxide/12 tungstophosphoric acid nanocomposites – achieving favorable properties with ion beams for electrochemical supercapacitors" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):50,
https://hdl.handle.net/21.15107/rcub_vinar_11637 .

TY  - CONF
AU  - Mravik, Željko
AU  - Pejčić, Milica
AU  - Rmuš Mravik, Jelena
AU  - Belec, Blaž
AU  - Bajuk-Bogdanović, Danica
AU  - Jovanović, Sonja
AU  - Marković, Smilja
AU  - Gavrilov, Nemanja
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11651
AB  - Ion beam modification of materials is notable method for achieving their unique structural, electronic, and other physicochemical properties. In the case of graphene oxide (GO) such modification of structure and surface chemistry is known to yield properties interesting for electrochemical supercapacitors. The performance of GO supercapacitors can be additionally improved by incorporating components with attractive redox properties. In this work, the influence of ion beam irradiation on synergy of GO and 12-tungstophosphoric acid (WPA) in their nanocomposite was investigated. For that, both components and their composites with different mass ratios were irradiated using different ion species, fluences and energies (from 10 keV C to 710 MeV Bi). For the irradiated WPA, results showed clear correlation between ion beam parameters, degree of structural modification and electrochemical properties. With increasing structural modification, bond breaking is first induced giving higher catalytic activity toward HER. Further irradiation resulted in an increased interconnection of polytungstate species producing lower catalytic activity and lower lithiation capacity. Irradiated GO showed modified surface chemistry, with preferable reduction of alkoxy and epoxy groups, changes in morphology and electric properties due to increased number of defects with increasing fluence, synergic effect of ion beam irradiated GO and WPA resulted in higher capacitance of irradiated composites compared to GO presumably because of interaction of structurally modified WPA with defect sites on GO thus reducing electrolyte flow along ion tracks.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors
SP  - 36
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11651
ER  - 

@conference{
author = "Mravik, Željko and Pejčić, Milica and Rmuš Mravik, Jelena and Belec, Blaž and Bajuk-Bogdanović, Danica and Jovanović, Sonja and Marković, Smilja and Gavrilov, Nemanja and Skuratov, Vladimir and Jovanović, Zoran",
year = "2023",
abstract = "Ion beam modification of materials is notable method for achieving their unique structural, electronic, and other physicochemical properties. In the case of graphene oxide (GO) such modification of structure and surface chemistry is known to yield properties interesting for electrochemical supercapacitors. The performance of GO supercapacitors can be additionally improved by incorporating components with attractive redox properties. In this work, the influence of ion beam irradiation on synergy of GO and 12-tungstophosphoric acid (WPA) in their nanocomposite was investigated. For that, both components and their composites with different mass ratios were irradiated using different ion species, fluences and energies (from 10 keV C to 710 MeV Bi). For the irradiated WPA, results showed clear correlation between ion beam parameters, degree of structural modification and electrochemical properties. With increasing structural modification, bond breaking is first induced giving higher catalytic activity toward HER. Further irradiation resulted in an increased interconnection of polytungstate species producing lower catalytic activity and lower lithiation capacity. Irradiated GO showed modified surface chemistry, with preferable reduction of alkoxy and epoxy groups, changes in morphology and electric properties due to increased number of defects with increasing fluence, synergic effect of ion beam irradiated GO and WPA resulted in higher capacitance of irradiated composites compared to GO presumably because of interaction of structurally modified WPA with defect sites on GO thus reducing electrolyte flow along ion tracks.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors",
pages = "36",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11651"
}

Mravik, Ž., Pejčić, M., Rmuš Mravik, J., Belec, B., Bajuk-Bogdanović, D., Jovanović, S., Marković, S., Gavrilov, N., Skuratov, V.,& Jovanović, Z.. (2023). Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 36.
https://hdl.handle.net/21.15107/rcub_vinar_11651

Mravik Ž, Pejčić M, Rmuš Mravik J, Belec B, Bajuk-Bogdanović D, Jovanović S, Marković S, Gavrilov N, Skuratov V, Jovanović Z. Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:36.
https://hdl.handle.net/21.15107/rcub_vinar_11651 .

Mravik, Željko, Pejčić, Milica, Rmuš Mravik, Jelena, Belec, Blaž, Bajuk-Bogdanović, Danica, Jovanović, Sonja, Marković, Smilja, Gavrilov, Nemanja, Skuratov, Vladimir, Jovanović, Zoran, "Ion-beam irradiated graphene oxide, 12-tungstophosphoric acid and their nanocomposites for electrochemical supercapacitors" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):36,
https://hdl.handle.net/21.15107/rcub_vinar_11651 .

TY  - CONF
AU  - Rmuš Mravik, Jelena
AU  - Rajić, Vladimir
AU  - Belec, Blaž
AU  - Mravik, Željko
AU  - Jovanović, Zoran
AU  - Stojković Simatović, Ivana
AU  - Kurko, Sandra
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11657
AB  - Hydrogen production can be outlined as an important aspect of the modern economy. In order to be more clean and renewable, green hydrogen is most desirable, where expensive catalysts for water electrolysis are usually used. As alternative, transition metal dichalcogenides represent potentially good material, with room for further improvement. Molybdenum disulfide is a stable material with a reasonable amount of it available. The properties of the material can be easily tuned in order to increase its charge transport and create more active sites. The incorporation of defects and additives can be beneficial for the catalytic activity of MoS2. Graphene oxide (GO) is carbon nanomaterial, with a large surface area and when reduced, it could be used as a conductive additive. Furthermore, ball milling is a known low-cost, simple and scalable method to introduce defects in the structure. Therefore, combining these two approaches should result in a material with enhanced catalytic activity for hydrogen evolution reaction. The molybdenum disulfide was prepared by easy one-step hydrothermal synthesis. The graphene oxide was first obtained by modified Hummers’ method and after that reduced by thermal treatment at 200 °C. Thus prepared constituents are combined in different mass ratios and composites were obtained by milling with a high-energy ball mill. The various milling parameters were optimized. The prepared composites were analyzed as catalysts for hydrogen evolution reaction in an acidic solution.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - Modification of MoS2/GO composites with ball milling and thermal treatment for catalytic application
SP  - 156
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11657
ER  - 

@conference{
author = "Rmuš Mravik, Jelena and Rajić, Vladimir and Belec, Blaž and Mravik, Željko and Jovanović, Zoran and Stojković Simatović, Ivana and Kurko, Sandra",
year = "2023",
abstract = "Hydrogen production can be outlined as an important aspect of the modern economy. In order to be more clean and renewable, green hydrogen is most desirable, where expensive catalysts for water electrolysis are usually used. As alternative, transition metal dichalcogenides represent potentially good material, with room for further improvement. Molybdenum disulfide is a stable material with a reasonable amount of it available. The properties of the material can be easily tuned in order to increase its charge transport and create more active sites. The incorporation of defects and additives can be beneficial for the catalytic activity of MoS2. Graphene oxide (GO) is carbon nanomaterial, with a large surface area and when reduced, it could be used as a conductive additive. Furthermore, ball milling is a known low-cost, simple and scalable method to introduce defects in the structure. Therefore, combining these two approaches should result in a material with enhanced catalytic activity for hydrogen evolution reaction. The molybdenum disulfide was prepared by easy one-step hydrothermal synthesis. The graphene oxide was first obtained by modified Hummers’ method and after that reduced by thermal treatment at 200 °C. Thus prepared constituents are combined in different mass ratios and composites were obtained by milling with a high-energy ball mill. The various milling parameters were optimized. The prepared composites were analyzed as catalysts for hydrogen evolution reaction in an acidic solution.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Modification of MoS2/GO composites with ball milling and thermal treatment for catalytic application",
pages = "156",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11657"
}

Rmuš Mravik, J., Rajić, V., Belec, B., Mravik, Ž., Jovanović, Z., Stojković Simatović, I.,& Kurko, S.. (2023). Modification of MoS2/GO composites with ball milling and thermal treatment for catalytic application. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 156.
https://hdl.handle.net/21.15107/rcub_vinar_11657

Rmuš Mravik J, Rajić V, Belec B, Mravik Ž, Jovanović Z, Stojković Simatović I, Kurko S. Modification of MoS2/GO composites with ball milling and thermal treatment for catalytic application. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:156.
https://hdl.handle.net/21.15107/rcub_vinar_11657 .

Rmuš Mravik, Jelena, Rajić, Vladimir, Belec, Blaž, Mravik, Željko, Jovanović, Zoran, Stojković Simatović, Ivana, Kurko, Sandra, "Modification of MoS2/GO composites with ball milling and thermal treatment for catalytic application" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):156,
https://hdl.handle.net/21.15107/rcub_vinar_11657 .

TY  - CONF
AU  - Mravik, Željko
AU  - Pejčić, Milica
AU  - Grujičić, Marija
AU  - Rmuš Mravik, Jelena
AU  - Stević, Miša
AU  - Stević, Zoran
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12314
AB  - In sensor devices the material of choice should be highly dependent on perturbation of environmental parameters. In order to achieve good sensitivity and selectivity of sensing devices to temperature, humidity or concentration of different gasses, the materials with adjustable properties are highly desirable. Electric properties of graphene oxide (GO) can be easily tuned by modification of surface chemistry and anchoring of functional compounds onto its two-dimensional structure. Prior to application of sensing device, research and development of materials system is the most essential step. In this work, the formation of GO and GO/12-tungstophosphoric acid (WPA) films with 6 wt.% of WPA on interdigital electrodes was investigated by variation of dip-coating parameters (receding angle and time between steps). Obtained films were thermally reduced in argon atmosphere after which optical microscopy was used to evaluate morphology and stability of deposited GO and GO/WPA films. Impedance spectroscopy was used to investigate the electric properties of the obtained films in range from 10 Hz to 100 kHz. Measured impedance values were correlated to the degree of material detachment and deposition parameters i.e. films showing the lowest impedance values had the smallest area of detached film. Additionally, impedance values were measured depending on the environment temperature which showed that GO/WPA films exhibit the lowest impedance values and good sensitivity to changes of temperature making it good a candidate for sensing devices.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Temperature dependence of electric properties of GO and GO/WPA films on interdigital electrodes
SP  - 40
EP  - 40
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12314
ER  - 

@conference{
author = "Mravik, Željko and Pejčić, Milica and Grujičić, Marija and Rmuš Mravik, Jelena and Stević, Miša and Stević, Zoran and Jovanović, Zoran",
year = "2023",
abstract = "In sensor devices the material of choice should be highly dependent on perturbation of environmental parameters. In order to achieve good sensitivity and selectivity of sensing devices to temperature, humidity or concentration of different gasses, the materials with adjustable properties are highly desirable. Electric properties of graphene oxide (GO) can be easily tuned by modification of surface chemistry and anchoring of functional compounds onto its two-dimensional structure. Prior to application of sensing device, research and development of materials system is the most essential step. In this work, the formation of GO and GO/12-tungstophosphoric acid (WPA) films with 6 wt.% of WPA on interdigital electrodes was investigated by variation of dip-coating parameters (receding angle and time between steps). Obtained films were thermally reduced in argon atmosphere after which optical microscopy was used to evaluate morphology and stability of deposited GO and GO/WPA films. Impedance spectroscopy was used to investigate the electric properties of the obtained films in range from 10 Hz to 100 kHz. Measured impedance values were correlated to the degree of material detachment and deposition parameters i.e. films showing the lowest impedance values had the smallest area of detached film. Additionally, impedance values were measured depending on the environment temperature which showed that GO/WPA films exhibit the lowest impedance values and good sensitivity to changes of temperature making it good a candidate for sensing devices.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Temperature dependence of electric properties of GO and GO/WPA films on interdigital electrodes",
pages = "40-40",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12314"
}

Mravik, Ž., Pejčić, M., Grujičić, M., Rmuš Mravik, J., Stević, M., Stević, Z.,& Jovanović, Z.. (2023). Temperature dependence of electric properties of GO and GO/WPA films on interdigital electrodes. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 40-40.
https://hdl.handle.net/21.15107/rcub_vinar_12314

Mravik Ž, Pejčić M, Grujičić M, Rmuš Mravik J, Stević M, Stević Z, Jovanović Z. Temperature dependence of electric properties of GO and GO/WPA films on interdigital electrodes. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:40-40.
https://hdl.handle.net/21.15107/rcub_vinar_12314 .

Mravik, Željko, Pejčić, Milica, Grujičić, Marija, Rmuš Mravik, Jelena, Stević, Miša, Stević, Zoran, Jovanović, Zoran, "Temperature dependence of electric properties of GO and GO/WPA films on interdigital electrodes" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):40-40,
https://hdl.handle.net/21.15107/rcub_vinar_12314 .

TY  - CONF
AU  - Pejčić, Milica
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica
AU  - Grujičić, Marija
AU  - Rmuš Mravik, Jelena
AU  - Jovanović, Sonja
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12316
AB  - Different hierarchical ordering of nanomaterials, either as individual components or in the form of nanocomposites, is one of the approaches used for the development of supercapacitors. In this work, the effect of hydrothermal treatment on oxygen functional groups of nanocomposites between graphene oxide (GO), 12-tungstophosphoric acid (WPA), and 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) was examined. The mentioned materials were hydrothermally treated for 4, 8 and 12 hours at 180 °C in order to understand how interaction between the components is influencing development of surface chemistry. The results of Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy (Raman), and temperature-programmed desorption (TPD) are showing the surface and structural changes of GO (individually and in nanocomposite) as a result of hydrothermal treatment. Both FTIR and RAMAN confirm the presence of WPA and PTCDA. Additionally, it appears that hydrothermal treatment has no impact on the structural changes in PTCDA, which is consistent across various temperature conditions. TPD results indicate that prolonged hydrothermal treatment leads to a gradual increase of the number of functional groups of GO. However, the number of desorbed groups is influenced by the WPA and PTDCA components. This research offers new insights into GO, WPA, and PTCDA interactions which can have useful implications for development of electrochemical supercapacitors.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Investigating the influence of hydrothermal treatment on oxygen functional groups in graphene oxide-based nanocomposites
SP  - 43
EP  - 43
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12316
ER  - 

@conference{
author = "Pejčić, Milica and Mravik, Željko and Bajuk-Bogdanović, Danica and Grujičić, Marija and Rmuš Mravik, Jelena and Jovanović, Sonja and Jovanović, Zoran",
year = "2023",
abstract = "Different hierarchical ordering of nanomaterials, either as individual components or in the form of nanocomposites, is one of the approaches used for the development of supercapacitors. In this work, the effect of hydrothermal treatment on oxygen functional groups of nanocomposites between graphene oxide (GO), 12-tungstophosphoric acid (WPA), and 3,4,9,10-perylenetetracarboxylic dianhydride (PTCDA) was examined. The mentioned materials were hydrothermally treated for 4, 8 and 12 hours at 180 °C in order to understand how interaction between the components is influencing development of surface chemistry. The results of Fourier-transform infrared spectroscopy (FTIR), Raman spectroscopy (Raman), and temperature-programmed desorption (TPD) are showing the surface and structural changes of GO (individually and in nanocomposite) as a result of hydrothermal treatment. Both FTIR and RAMAN confirm the presence of WPA and PTCDA. Additionally, it appears that hydrothermal treatment has no impact on the structural changes in PTCDA, which is consistent across various temperature conditions. TPD results indicate that prolonged hydrothermal treatment leads to a gradual increase of the number of functional groups of GO. However, the number of desorbed groups is influenced by the WPA and PTDCA components. This research offers new insights into GO, WPA, and PTCDA interactions which can have useful implications for development of electrochemical supercapacitors.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Investigating the influence of hydrothermal treatment on oxygen functional groups in graphene oxide-based nanocomposites",
pages = "43-43",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12316"
}

Pejčić, M., Mravik, Ž., Bajuk-Bogdanović, D., Grujičić, M., Rmuš Mravik, J., Jovanović, S.,& Jovanović, Z.. (2023). Investigating the influence of hydrothermal treatment on oxygen functional groups in graphene oxide-based nanocomposites. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 43-43.
https://hdl.handle.net/21.15107/rcub_vinar_12316

Pejčić M, Mravik Ž, Bajuk-Bogdanović D, Grujičić M, Rmuš Mravik J, Jovanović S, Jovanović Z. Investigating the influence of hydrothermal treatment on oxygen functional groups in graphene oxide-based nanocomposites. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:43-43.
https://hdl.handle.net/21.15107/rcub_vinar_12316 .

Pejčić, Milica, Mravik, Željko, Bajuk-Bogdanović, Danica, Grujičić, Marija, Rmuš Mravik, Jelena, Jovanović, Sonja, Jovanović, Zoran, "Investigating the influence of hydrothermal treatment on oxygen functional groups in graphene oxide-based nanocomposites" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):43-43,
https://hdl.handle.net/21.15107/rcub_vinar_12316 .

TY  - CONF
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
AU  - Mravik, Željko
AU  - Rmuš, Jelena
AU  - Jelić, Marko
AU  - Pejčić, Milica
AU  - Grujičić, Marija
AU  - Petković, Darija
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12334
AB  - Elektrohemijska istraživanja su prethodnih godina dala ključni podstrek globalnim stremljenjima ka obnovljivim izvorima energije. Višegeneracijski napori, u početku motivisani željom za fundamentalnim razumevanjem procesa, aktuelizovani su očekivanim nedostatkom fosilnih goriva i pratećim nepovoljnim uticajem na životnu sredinu. Nanomaterijali su omogućili spektakularan skok u tehnološkim inovacijama i neosporan je njihov doprinos obnovljivim izvorima energije. Zahvaljujući novim svojstvima nanomaterijala i njihovoj sinergiji, omogućeno je dalje unapređenje i integracija različitih funkcionalnosti. Pri tome, postalo je jasno da atomski precizan dizajn materijala postaje kritičan za razvoj naprava sledeće generacije. Ovo je posebno važno u slučaju nanokompozita gde interakcija komponenti pojačava moguće sinergijske doprinose. U izlaganju će biti dat osvrt na napredne metode sinteze i modifikacije materijala – od tradicionalnih, do tankih filmova, 0D i 2D nanomaterijala i njihovih kompozita – posmatranih kroz prizmu obnovljivih izvora energije i održivosti (elektrohemijski superkondenzatori, razgradnja vode, senzori, i dr.). Razvoj novih materijala i unapređenje elektrohemijskih sistema ima potencijal da suštinski učini obnovljivu energiju održivijom i dostupnijom, time otvarajući put ka održivoj budućnosti.
C3  - Savremena stremljenja u elektrohemiji u proceu prelaska na obnovljive izvore energije: Naučni skup posvećen 100 - godišnjici rođenja inostranog člana SANU Dž. O'M. Bokrisa : Knjiga izvoda
T1  - Sinteza i modifikacija naprednih nanomaterijala - pogled kroz prizmu obnovljivih izvora energije
SP  - 19
EP  - 19
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12334
ER  - 

@conference{
author = "Jovanović, Zoran and Jovanović, Sonja and Mravik, Željko and Rmuš, Jelena and Jelić, Marko and Pejčić, Milica and Grujičić, Marija and Petković, Darija",
year = "2023",
abstract = "Elektrohemijska istraživanja su prethodnih godina dala ključni podstrek globalnim stremljenjima ka obnovljivim izvorima energije. Višegeneracijski napori, u početku motivisani željom za fundamentalnim razumevanjem procesa, aktuelizovani su očekivanim nedostatkom fosilnih goriva i pratećim nepovoljnim uticajem na životnu sredinu. Nanomaterijali su omogućili spektakularan skok u tehnološkim inovacijama i neosporan je njihov doprinos obnovljivim izvorima energije. Zahvaljujući novim svojstvima nanomaterijala i njihovoj sinergiji, omogućeno je dalje unapređenje i integracija različitih funkcionalnosti. Pri tome, postalo je jasno da atomski precizan dizajn materijala postaje kritičan za razvoj naprava sledeće generacije. Ovo je posebno važno u slučaju nanokompozita gde interakcija komponenti pojačava moguće sinergijske doprinose. U izlaganju će biti dat osvrt na napredne metode sinteze i modifikacije materijala – od tradicionalnih, do tankih filmova, 0D i 2D nanomaterijala i njihovih kompozita – posmatranih kroz prizmu obnovljivih izvora energije i održivosti (elektrohemijski superkondenzatori, razgradnja vode, senzori, i dr.). Razvoj novih materijala i unapređenje elektrohemijskih sistema ima potencijal da suštinski učini obnovljivu energiju održivijom i dostupnijom, time otvarajući put ka održivoj budućnosti.",
journal = "Savremena stremljenja u elektrohemiji u proceu prelaska na obnovljive izvore energije: Naučni skup posvećen 100 - godišnjici rođenja inostranog člana SANU Dž. O'M. Bokrisa : Knjiga izvoda",
title = "Sinteza i modifikacija naprednih nanomaterijala - pogled kroz prizmu obnovljivih izvora energije",
pages = "19-19",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12334"
}

Jovanović, Z., Jovanović, S., Mravik, Ž., Rmuš, J., Jelić, M., Pejčić, M., Grujičić, M.,& Petković, D.. (2023). Sinteza i modifikacija naprednih nanomaterijala - pogled kroz prizmu obnovljivih izvora energije. in Savremena stremljenja u elektrohemiji u proceu prelaska na obnovljive izvore energije: Naučni skup posvećen 100 - godišnjici rođenja inostranog člana SANU Dž. O'M. Bokrisa : Knjiga izvoda, 19-19.
https://hdl.handle.net/21.15107/rcub_vinar_12334

Jovanović Z, Jovanović S, Mravik Ž, Rmuš J, Jelić M, Pejčić M, Grujičić M, Petković D. Sinteza i modifikacija naprednih nanomaterijala - pogled kroz prizmu obnovljivih izvora energije. in Savremena stremljenja u elektrohemiji u proceu prelaska na obnovljive izvore energije: Naučni skup posvećen 100 - godišnjici rođenja inostranog člana SANU Dž. O'M. Bokrisa : Knjiga izvoda. 2023;:19-19.
https://hdl.handle.net/21.15107/rcub_vinar_12334 .

Jovanović, Zoran, Jovanović, Sonja, Mravik, Željko, Rmuš, Jelena, Jelić, Marko, Pejčić, Milica, Grujičić, Marija, Petković, Darija, "Sinteza i modifikacija naprednih nanomaterijala - pogled kroz prizmu obnovljivih izvora energije" in Savremena stremljenja u elektrohemiji u proceu prelaska na obnovljive izvore energije: Naučni skup posvećen 100 - godišnjici rođenja inostranog člana SANU Dž. O'M. Bokrisa : Knjiga izvoda (2023):19-19,
https://hdl.handle.net/21.15107/rcub_vinar_12334 .

TY  - CONF
AU  - Mravik, Željko
AU  - Pejčić, Milica
AU  - Jovanović, Sonja
AU  - Petković, Darija
AU  - Stević, Miša
AU  - Stević, Zoran
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13494
AB  - Kompoziti nanomaterijala različitih dimenzionalnosti (2D, 1D i 0D) predstavljaju okosnicu razvoja budućih naprava. U našem istraživanju posebna pažnja usmerena je na elektrohemijske superkondenzatore i senzore, pri čemu su nanokompoziti 2D (grafen oksid, GO) i 0D (12- volframfosforna kiselina, WPA) materijala jedni od najperspektivnijih kandidata za ove primene. U ovom radu tanak film GO i GO/WPA formiran je potapanjem interdigitalnih elektroda u suspenziju materijala i postepenim izvlačenjem, pod uglovima od 30° i 45°, sa korakom od 20 μm i sa pauzom između koraka od 60, 120 i 180 sekundi. Optičkom mikroskopijom ocenjen je kvalitet i morfologija GO i GO/WPA filma pre i posle termičke redukcije, dok su merenja impedansne spektroskopije izvršena korišćenjem LCR analizatora. Rezultati optičke mikroskopije su pokazali najuniformniju pokrivenost uzorka sa najdužom pauzom između koraka. U slučaju GO deponovanog pod uglom od 30°, uzorci sa vremenom depozicije od 180 sekundi pokazali su smanjene vrednosti impendansi, usled smanjenog udela pukotina. GO/WPA kompozit sa pauzom između koraka od 60 sekundi pod uglom od 30° pokazao je najbolja svojstva. Uvođenje WPA u materijal rezultiralo je smanjenjem vrednosti otpornosti, povećavajući njegovu mogućnost primene u elektronskim uređajima.
AB  - Composites of nanomaterials with various dimensionalities (2D, 1D, and 0D) represent the cornerstone of future device development. Our investigation places particular emphasis on electrochemical supercapacitors and sensors, with 2D (graphene oxide, GO) and 0D (12- tungstophosphoric acid, WPA) nanocomposites being among the most promising candidates for these applications. In this study, a thin film of GO and GO/WPA was formed by immersing interdigital electrodes in a material suspension and gradually withdrawing them at angles of 30° and 45°, with a 20-μm step and dwell time of 60, 120, and 180 seconds. Optical microscopy was employed to assess the quality and morphology of the GO and GO/WPA films before and after thermal reduction, while impedance spectroscopy measurements were carried out using an LCR analyzer. The results of optical microscopy demonstrated the most uniform sample coverage with the longest dwell time. In the case of GO deposited at a 30° angle, samples with a dwell time of 180 seconds exhibited reduced impedance values due to a decreased presence of cracks. The GO/WPA composite with a 60-second dwell time at a 30° angle exhibited the best properties. The introduction of WPA into the material resulted in a reduction of resistance values, increasing its potential for use in electronic devices.
PB  - Belgrade : Union of Mechanical and
Electrotechnical Engineers and
Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources 
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Električna svojstva tankih filmova GO i GO/WPA na intergdigitalnim elektrodama
T1  - Electrical properties of GO and GO/WPA thin films on interdigital electrodes
SP  - 45
EP  - 51
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13494
ER  - 

@conference{
author = "Mravik, Željko and Pejčić, Milica and Jovanović, Sonja and Petković, Darija and Stević, Miša and Stević, Zoran and Jovanović, Zoran",
year = "2023",
abstract = "Kompoziti nanomaterijala različitih dimenzionalnosti (2D, 1D i 0D) predstavljaju okosnicu razvoja budućih naprava. U našem istraživanju posebna pažnja usmerena je na elektrohemijske superkondenzatore i senzore, pri čemu su nanokompoziti 2D (grafen oksid, GO) i 0D (12- volframfosforna kiselina, WPA) materijala jedni od najperspektivnijih kandidata za ove primene. U ovom radu tanak film GO i GO/WPA formiran je potapanjem interdigitalnih elektroda u suspenziju materijala i postepenim izvlačenjem, pod uglovima od 30° i 45°, sa korakom od 20 μm i sa pauzom između koraka od 60, 120 i 180 sekundi. Optičkom mikroskopijom ocenjen je kvalitet i morfologija GO i GO/WPA filma pre i posle termičke redukcije, dok su merenja impedansne spektroskopije izvršena korišćenjem LCR analizatora. Rezultati optičke mikroskopije su pokazali najuniformniju pokrivenost uzorka sa najdužom pauzom između koraka. U slučaju GO deponovanog pod uglom od 30°, uzorci sa vremenom depozicije od 180 sekundi pokazali su smanjene vrednosti impendansi, usled smanjenog udela pukotina. GO/WPA kompozit sa pauzom između koraka od 60 sekundi pod uglom od 30° pokazao je najbolja svojstva. Uvođenje WPA u materijal rezultiralo je smanjenjem vrednosti otpornosti, povećavajući njegovu mogućnost primene u elektronskim uređajima., Composites of nanomaterials with various dimensionalities (2D, 1D, and 0D) represent the cornerstone of future device development. Our investigation places particular emphasis on electrochemical supercapacitors and sensors, with 2D (graphene oxide, GO) and 0D (12- tungstophosphoric acid, WPA) nanocomposites being among the most promising candidates for these applications. In this study, a thin film of GO and GO/WPA was formed by immersing interdigital electrodes in a material suspension and gradually withdrawing them at angles of 30° and 45°, with a 20-μm step and dwell time of 60, 120, and 180 seconds. Optical microscopy was employed to assess the quality and morphology of the GO and GO/WPA films before and after thermal reduction, while impedance spectroscopy measurements were carried out using an LCR analyzer. The results of optical microscopy demonstrated the most uniform sample coverage with the longest dwell time. In the case of GO deposited at a 30° angle, samples with a dwell time of 180 seconds exhibited reduced impedance values due to a decreased presence of cracks. The GO/WPA composite with a 60-second dwell time at a 30° angle exhibited the best properties. The introduction of WPA into the material resulted in a reduction of resistance values, increasing its potential for use in electronic devices.",
publisher = "Belgrade : Union of Mechanical and
Electrotechnical Engineers and
Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources ",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Električna svojstva tankih filmova GO i GO/WPA na intergdigitalnim elektrodama, Electrical properties of GO and GO/WPA thin films on interdigital electrodes",
pages = "45-51",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13494"
}

Mravik, Ž., Pejčić, M., Jovanović, S., Petković, D., Stević, M., Stević, Z.,& Jovanović, Z.. (2023). Električna svojstva tankih filmova GO i GO/WPA na intergdigitalnim elektrodama. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Belgrade : Union of Mechanical and
Electrotechnical Engineers and
Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources ., 45-51.
https://hdl.handle.net/21.15107/rcub_vinar_13494

Mravik Ž, Pejčić M, Jovanović S, Petković D, Stević M, Stević Z, Jovanović Z. Električna svojstva tankih filmova GO i GO/WPA na intergdigitalnim elektrodama. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:45-51.
https://hdl.handle.net/21.15107/rcub_vinar_13494 .

Mravik, Željko, Pejčić, Milica, Jovanović, Sonja, Petković, Darija, Stević, Miša, Stević, Zoran, Jovanović, Zoran, "Električna svojstva tankih filmova GO i GO/WPA na intergdigitalnim elektrodama" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):45-51,
https://hdl.handle.net/21.15107/rcub_vinar_13494 .

TY  - CONF
AU  - Stević, Miša
AU  - Stević, Zoran
AU  - Stolić, Predrag
AU  - Radovanović, Ilija
AU  - Ilić, Dejan
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/13498
AB  - Fokus ovog rada je istraživanje i implementacija mikro step elektromotornog pogona kontrolisanog mikrokontrolerom. Cilj istraživanja je bio razviti precizan i efikasan sistem za upravljanje elektromotornim pogonom koji omogućava mikro korake za veću tačnost pozicioniranja i smanjenje vibracija. U radu su predstavljeni različiti pristupi i tehnologije za upravljanje elektromotornim pogonom. Naglasak je stavljen na mikro step tehnologiju, koja omogućava fino podešavanje koraka motora i smanjenje veličine koraka na mikronivou. Za implementaciju sistema, korišćen je mikrokontroler koji je programiran za generisanje odgovarajućih signala za kontrolu elektromotora. Razmatrane su različite metode generisanja signala, kao i upotreba odgovarajućih drajvera motora. Kroz eksperimente i testiranja, ocenjene su performanse mikro step elektromotornog pogona u smislu tačnosti pozicioniranja, brzine, vibracija i energetske efikasnosti. Takođe su istražene mogućnosti optimizacije parametara pogona kako bi se postigle bolje performanse. Rezultati istraživanja ukazuju na efikasnost mikro step elektromotornog pogona kontrolisanog mikrokontrolerom u postizanju visoke tačnosti i smanjenja vibracija. Ovaj rad ima praktičnu primenu u različitim industrijama koje zahtevaju precizno pozicioniranje, poput robotike, medicinske opreme i automatizacije.
AB  - The focus of this paper is the research and implementation of a micro step electric drive controlled by a microcontroller. The goal of the research was to develop a precise and efficient system for controlling the electric drive that enables micro steps for greater positioning accuracy and vibration reduction. The paper presents different approaches and technologies for electric drive management. The focus is on micro step technology, which allows fine tuning of the motor step and reduction of the step size at the micro level. To implement the system, a microcontroller was used that was programmed to generate the appropriate signals to control the electric motor. Different methods of signal generation are considered as well as the use of suitable motor drivers. Through experiments and tests, the performance of the micro step electric drive was evaluated in terms of positioning accuracy, speed, vibration and energy efficiency. The possibilities of optimizing the drive parameters in order to achieve better performance were also investigated. The results of the research indicate the effectiveness of the micro step electric drive controlled by a microcontroller in achieving high accuracy and reducing vibrations. This work has practical applications in various industries that require precise positioning, such as robotics, nanotecnology, medical equipment and automation.
PB  - Belgrade : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources
C3  - 11th International Conference on Renewable Electrical Power Sources : Proceedings
T1  - Mikro step elektromotorni pogon kontrolisan mikrokontrolerom
T1  - Micro step electric drive controlled by microcontroller
SP  - 181
EP  - 184
UR  - https://hdl.handle.net/21.15107/rcub_vinar_13498
ER  - 

@conference{
author = "Stević, Miša and Stević, Zoran and Stolić, Predrag and Radovanović, Ilija and Ilić, Dejan and Jovanović, Zoran",
year = "2023",
abstract = "Fokus ovog rada je istraživanje i implementacija mikro step elektromotornog pogona kontrolisanog mikrokontrolerom. Cilj istraživanja je bio razviti precizan i efikasan sistem za upravljanje elektromotornim pogonom koji omogućava mikro korake za veću tačnost pozicioniranja i smanjenje vibracija. U radu su predstavljeni različiti pristupi i tehnologije za upravljanje elektromotornim pogonom. Naglasak je stavljen na mikro step tehnologiju, koja omogućava fino podešavanje koraka motora i smanjenje veličine koraka na mikronivou. Za implementaciju sistema, korišćen je mikrokontroler koji je programiran za generisanje odgovarajućih signala za kontrolu elektromotora. Razmatrane su različite metode generisanja signala, kao i upotreba odgovarajućih drajvera motora. Kroz eksperimente i testiranja, ocenjene su performanse mikro step elektromotornog pogona u smislu tačnosti pozicioniranja, brzine, vibracija i energetske efikasnosti. Takođe su istražene mogućnosti optimizacije parametara pogona kako bi se postigle bolje performanse. Rezultati istraživanja ukazuju na efikasnost mikro step elektromotornog pogona kontrolisanog mikrokontrolerom u postizanju visoke tačnosti i smanjenja vibracija. Ovaj rad ima praktičnu primenu u različitim industrijama koje zahtevaju precizno pozicioniranje, poput robotike, medicinske opreme i automatizacije., The focus of this paper is the research and implementation of a micro step electric drive controlled by a microcontroller. The goal of the research was to develop a precise and efficient system for controlling the electric drive that enables micro steps for greater positioning accuracy and vibration reduction. The paper presents different approaches and technologies for electric drive management. The focus is on micro step technology, which allows fine tuning of the motor step and reduction of the step size at the micro level. To implement the system, a microcontroller was used that was programmed to generate the appropriate signals to control the electric motor. Different methods of signal generation are considered as well as the use of suitable motor drivers. Through experiments and tests, the performance of the micro step electric drive was evaluated in terms of positioning accuracy, speed, vibration and energy efficiency. The possibilities of optimizing the drive parameters in order to achieve better performance were also investigated. The results of the research indicate the effectiveness of the micro step electric drive controlled by a microcontroller in achieving high accuracy and reducing vibrations. This work has practical applications in various industries that require precise positioning, such as robotics, nanotecnology, medical equipment and automation.",
publisher = "Belgrade : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources",
journal = "11th International Conference on Renewable Electrical Power Sources : Proceedings",
title = "Mikro step elektromotorni pogon kontrolisan mikrokontrolerom, Micro step electric drive controlled by microcontroller",
pages = "181-184",
url = "https://hdl.handle.net/21.15107/rcub_vinar_13498"
}

Stević, M., Stević, Z., Stolić, P., Radovanović, I., Ilić, D.,& Jovanović, Z.. (2023). Mikro step elektromotorni pogon kontrolisan mikrokontrolerom. in 11th International Conference on Renewable Electrical Power Sources : Proceedings
Belgrade : Union of Mechanical and Electrotechnical Engineers and Technicians of Serbia (SMEITS) : Society for Renewable Electrical Power Sources., 181-184.
https://hdl.handle.net/21.15107/rcub_vinar_13498

Stević M, Stević Z, Stolić P, Radovanović I, Ilić D, Jovanović Z. Mikro step elektromotorni pogon kontrolisan mikrokontrolerom. in 11th International Conference on Renewable Electrical Power Sources : Proceedings. 2023;:181-184.
https://hdl.handle.net/21.15107/rcub_vinar_13498 .

Stević, Miša, Stević, Zoran, Stolić, Predrag, Radovanović, Ilija, Ilić, Dejan, Jovanović, Zoran, "Mikro step elektromotorni pogon kontrolisan mikrokontrolerom" in 11th International Conference on Renewable Electrical Power Sources : Proceedings (2023):181-184,
https://hdl.handle.net/21.15107/rcub_vinar_13498 .

TY  - JOUR
AU  - Jovanović, Zoran M.
AU  - Trstenjak, Urška
AU  - Ho, Hsin-Chia
AU  - Butsyk, Olena
AU  - Chen, Binbin
AU  - Tchernychova, Elena
AU  - Borodavka, Fedir
AU  - Koster, Gertjan
AU  - Hlinka, Jiří
AU  - Spreitzer, Matjaž
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10623
AB  - The application of two-dimensional (2D) materials
has alleviated a number of challenges of traditional epitaxy and
pushed forward the integration of dissimilar materials. Besides
acting as a seed layer for van der Waals epitaxy, the 2D materials�
being atom(s) thick�have also enabled wetting transparency in
which the potential field of the substrate, although partially
screened, is still capable of imposing epitaxial overgrowth. One of
the crucial steps in this technology is the preservation of the quality
of 2D materials during and after their transfer to a substrate of
interest. In the present study, we show that by honing the
achievements of traditional epitaxy and wet chemistry a hybrid
approach can be devised that offers a unique perspective for the
integration of functional oxides with a silicon platform. It is based
on SrO-assisted deoxidation and controllable coverage of silicon surface with a layer(s) of spin-coated graphene oxide, thus
simultaneously allowing both direct and van der Waals epitaxy of SrTiO3 (STO). We were able to grow a high-quality STO pseudosubstrate suitable for further overgrowth of functional oxides, such as PbZr1−xTixO3 (PZT). Given that the quality of the films grown
on a reduced graphene oxide-buffer layer was almost identical to that obtained on SiC-derived graphene, we believe that this
approach may provide new routes for direct and “remote” epitaxy or layer-transfer techniques of dissimilar material systems.
T2  - ACS Applied Materials and Interfaces
T1  - Tiling the Silicon for Added Functionality: PLD Growth of Highly
Crystalline STO and PZT on Graphene Oxide-Buffered Silicon Surface
VL  - 15
SP  - 6058
EP  - 6068
DO  - 10.1021/acsami.2c17351
ER  - 

@article{
author = "Jovanović, Zoran M. and Trstenjak, Urška and Ho, Hsin-Chia and Butsyk, Olena and Chen, Binbin and Tchernychova, Elena and Borodavka, Fedir and Koster, Gertjan and Hlinka, Jiří and Spreitzer, Matjaž",
year = "2023",
abstract = "The application of two-dimensional (2D) materials
has alleviated a number of challenges of traditional epitaxy and
pushed forward the integration of dissimilar materials. Besides
acting as a seed layer for van der Waals epitaxy, the 2D materials�
being atom(s) thick�have also enabled wetting transparency in
which the potential field of the substrate, although partially
screened, is still capable of imposing epitaxial overgrowth. One of
the crucial steps in this technology is the preservation of the quality
of 2D materials during and after their transfer to a substrate of
interest. In the present study, we show that by honing the
achievements of traditional epitaxy and wet chemistry a hybrid
approach can be devised that offers a unique perspective for the
integration of functional oxides with a silicon platform. It is based
on SrO-assisted deoxidation and controllable coverage of silicon surface with a layer(s) of spin-coated graphene oxide, thus
simultaneously allowing both direct and van der Waals epitaxy of SrTiO3 (STO). We were able to grow a high-quality STO pseudosubstrate suitable for further overgrowth of functional oxides, such as PbZr1−xTixO3 (PZT). Given that the quality of the films grown
on a reduced graphene oxide-buffer layer was almost identical to that obtained on SiC-derived graphene, we believe that this
approach may provide new routes for direct and “remote” epitaxy or layer-transfer techniques of dissimilar material systems.",
journal = "ACS Applied Materials and Interfaces",
title = "Tiling the Silicon for Added Functionality: PLD Growth of Highly
Crystalline STO and PZT on Graphene Oxide-Buffered Silicon Surface",
volume = "15",
pages = "6058-6068",
doi = "10.1021/acsami.2c17351"
}

Jovanović, Z. M., Trstenjak, U., Ho, H., Butsyk, O., Chen, B., Tchernychova, E., Borodavka, F., Koster, G., Hlinka, J.,& Spreitzer, M.. (2023). Tiling the Silicon for Added Functionality: PLD Growth of Highly
Crystalline STO and PZT on Graphene Oxide-Buffered Silicon Surface. in ACS Applied Materials and Interfaces, 15, 6058-6068.
https://doi.org/10.1021/acsami.2c17351

Jovanović ZM, Trstenjak U, Ho H, Butsyk O, Chen B, Tchernychova E, Borodavka F, Koster G, Hlinka J, Spreitzer M. Tiling the Silicon for Added Functionality: PLD Growth of Highly
Crystalline STO and PZT on Graphene Oxide-Buffered Silicon Surface. in ACS Applied Materials and Interfaces. 2023;15:6058-6068.
doi:10.1021/acsami.2c17351 .

Jovanović, Zoran M., Trstenjak, Urška, Ho, Hsin-Chia, Butsyk, Olena, Chen, Binbin, Tchernychova, Elena, Borodavka, Fedir, Koster, Gertjan, Hlinka, Jiří, Spreitzer, Matjaž, "Tiling the Silicon for Added Functionality: PLD Growth of Highly
Crystalline STO and PZT on Graphene Oxide-Buffered Silicon Surface" in ACS Applied Materials and Interfaces, 15 (2023):6058-6068,
https://doi.org/10.1021/acsami.2c17351 . .

TY  - CONF
AU  - Vujković, Milica
AU  - Jovanović, Zoran M.
AU  - Bajuk-Bogdanović, Danica
AU  - Tomić, Nataša
AU  - Čebela, Maria
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11478
AB  - Unlike its ferroelectric and magnetic properties [1], the electrochemical behavior of bismuth ferrite, BiFeO3 (BFO) has received less attention [2]. In this contribution, BFO was hydrothermally synthesized [3] to be examined as an electrode for metal- ion aqueous rechargeable batteries. BFO powder was first investigated in terms of structural and surface properties using X-ray diffraction and Thermally-Programmed Desorption methods and then characterized in Li and Na- containing aqueous electrolytes using Cyclic Voltammetry and Chronopotentiometry. BFO was found to be inactive within the electrochemical potential window of the aqueous electrolyte. However, its ability to be electrochemically transformed, under deep cathodic polarization, results in an active phase composed of Bi- and Fe-based oxides, as confirmed by Fourier-transform infrared and Raman spectroscopy. The redox behavior of BFO-derived oxide electrode is compared in both Li and Na -based aqueous electrolytes and discussed in the context of tailoring electrochemical properties for safe and sustainable metal-ion batteries.
PB  - Belgrade : University of Belgrade, Institute for Multidisciplinary Research
C3  - Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade
T1  - What Happens When BiFeO3 Undergoes Potentiodynamic Polarization?
SP  - 121
EP  - 121
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11478
ER  - 

@conference{
author = "Vujković, Milica and Jovanović, Zoran M. and Bajuk-Bogdanović, Danica and Tomić, Nataša and Čebela, Maria",
year = "2023",
abstract = "Unlike its ferroelectric and magnetic properties [1], the electrochemical behavior of bismuth ferrite, BiFeO3 (BFO) has received less attention [2]. In this contribution, BFO was hydrothermally synthesized [3] to be examined as an electrode for metal- ion aqueous rechargeable batteries. BFO powder was first investigated in terms of structural and surface properties using X-ray diffraction and Thermally-Programmed Desorption methods and then characterized in Li and Na- containing aqueous electrolytes using Cyclic Voltammetry and Chronopotentiometry. BFO was found to be inactive within the electrochemical potential window of the aqueous electrolyte. However, its ability to be electrochemically transformed, under deep cathodic polarization, results in an active phase composed of Bi- and Fe-based oxides, as confirmed by Fourier-transform infrared and Raman spectroscopy. The redox behavior of BFO-derived oxide electrode is compared in both Li and Na -based aqueous electrolytes and discussed in the context of tailoring electrochemical properties for safe and sustainable metal-ion batteries.",
publisher = "Belgrade : University of Belgrade, Institute for Multidisciplinary Research",
journal = "Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade",
title = "What Happens When BiFeO3 Undergoes Potentiodynamic Polarization?",
pages = "121-121",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11478"
}

Vujković, M., Jovanović, Z. M., Bajuk-Bogdanović, D., Tomić, N.,& Čebela, M.. (2023). What Happens When BiFeO3 Undergoes Potentiodynamic Polarization?. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade
Belgrade : University of Belgrade, Institute for Multidisciplinary Research., 121-121.
https://hdl.handle.net/21.15107/rcub_vinar_11478

Vujković M, Jovanović ZM, Bajuk-Bogdanović D, Tomić N, Čebela M. What Happens When BiFeO3 Undergoes Potentiodynamic Polarization?. in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade. 2023;:121-121.
https://hdl.handle.net/21.15107/rcub_vinar_11478 .

Vujković, Milica, Jovanović, Zoran M., Bajuk-Bogdanović, Danica, Tomić, Nataša, Čebela, Maria, "What Happens When BiFeO3 Undergoes Potentiodynamic Polarization?" in Programme and the Book of Abstracts / 7th Conference of The Serbian Society for Ceramic Materials, 7CSCS-2023, June 14-16, 2023 Belgrade (2023):121-121,
https://hdl.handle.net/21.15107/rcub_vinar_11478 .

TY  - JOUR
AU  - Ho, Hsin-Chia
AU  - Smiljanić, Milutin
AU  - Jovanović, Zoran M.
AU  - Čekada, Miha
AU  - Kovač, Janez
AU  - Koster, Gertjan
AU  - Hlinka, Jiří
AU  - Hodnik, Nejc
AU  - Spreitzer, Matjaž
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11587
AB  - Development of a robust photocathode using lowcost and high-performing materials, e.g., p-Si, to produce clean fuel hydrogen has remained challenging since the semiconductor substrate is easily susceptible to (photo)corrosion under photoelectrochemical (PEC) operational conditions. A protective layer over the substrate to simultaneously provide corrosion resistance and maintain efficient charge transfer across the device is therefore needed. To this end, in the present work, we utilized pulsed laser deposition (PLD) to prepare a high-quality SrTiO3 (STO) layer to passivate the p-Si substrate using a buffer layer of reduced graphene oxide (rGO). Specifically, a very thin (3.9 nm ∼10 unit cells) STO layer epitaxially overgrown on rGO-buffered Si showed the highest onset potential (0.326 V vs RHE) in comparison to the counterparts with thicker and/or nonepitaxial STO. The photovoltage, flat-band potential, and electrochemical impedance spectroscopy measurements revealed that the epitaxial photocathode was more beneficial for charge separation, charge transfer, and targeted redox reaction than the nonepitaxial one. The STO/rGO/Si with a smooth and highly epitaxial STO layer outperforming the directly contacted STO/Si with a textured and polycrystalline STO layer showed the importance of having a well-defined passivation layer. In addition, the numerous pinholes formed in the directly contacted STO/Si led to the rapid degradation of the photocathode during the PEC measurements. The stability tests demonstrated the soundness of the epitaxial STO layer in passivating Si against corrosion. This study provided a facile approach for preparing a robust protection layer over a photoelectrode substrate in realizing an efficient and, at the same time, durable PEC device.
T2  - ACS Applied Materials & Interfaces
T1  - Robust SrTiO3 Passivation of Silicon Photocathode by Reduced Graphene Oxide for Solar Water Splitting
VL  - 15
IS  - 37
SP  - 44482
EP  - 44492
DO  - 10.1021/acsami.3c07747
ER  - 

@article{
author = "Ho, Hsin-Chia and Smiljanić, Milutin and Jovanović, Zoran M. and Čekada, Miha and Kovač, Janez and Koster, Gertjan and Hlinka, Jiří and Hodnik, Nejc and Spreitzer, Matjaž",
year = "2023",
abstract = "Development of a robust photocathode using lowcost and high-performing materials, e.g., p-Si, to produce clean fuel hydrogen has remained challenging since the semiconductor substrate is easily susceptible to (photo)corrosion under photoelectrochemical (PEC) operational conditions. A protective layer over the substrate to simultaneously provide corrosion resistance and maintain efficient charge transfer across the device is therefore needed. To this end, in the present work, we utilized pulsed laser deposition (PLD) to prepare a high-quality SrTiO3 (STO) layer to passivate the p-Si substrate using a buffer layer of reduced graphene oxide (rGO). Specifically, a very thin (3.9 nm ∼10 unit cells) STO layer epitaxially overgrown on rGO-buffered Si showed the highest onset potential (0.326 V vs RHE) in comparison to the counterparts with thicker and/or nonepitaxial STO. The photovoltage, flat-band potential, and electrochemical impedance spectroscopy measurements revealed that the epitaxial photocathode was more beneficial for charge separation, charge transfer, and targeted redox reaction than the nonepitaxial one. The STO/rGO/Si with a smooth and highly epitaxial STO layer outperforming the directly contacted STO/Si with a textured and polycrystalline STO layer showed the importance of having a well-defined passivation layer. In addition, the numerous pinholes formed in the directly contacted STO/Si led to the rapid degradation of the photocathode during the PEC measurements. The stability tests demonstrated the soundness of the epitaxial STO layer in passivating Si against corrosion. This study provided a facile approach for preparing a robust protection layer over a photoelectrode substrate in realizing an efficient and, at the same time, durable PEC device.",
journal = "ACS Applied Materials & Interfaces",
title = "Robust SrTiO3 Passivation of Silicon Photocathode by Reduced Graphene Oxide for Solar Water Splitting",
volume = "15",
number = "37",
pages = "44482-44492",
doi = "10.1021/acsami.3c07747"
}

Ho, H., Smiljanić, M., Jovanović, Z. M., Čekada, M., Kovač, J., Koster, G., Hlinka, J., Hodnik, N.,& Spreitzer, M.. (2023). Robust SrTiO3 Passivation of Silicon Photocathode by Reduced Graphene Oxide for Solar Water Splitting. in ACS Applied Materials & Interfaces, 15(37), 44482-44492.
https://doi.org/10.1021/acsami.3c07747

Ho H, Smiljanić M, Jovanović ZM, Čekada M, Kovač J, Koster G, Hlinka J, Hodnik N, Spreitzer M. Robust SrTiO3 Passivation of Silicon Photocathode by Reduced Graphene Oxide for Solar Water Splitting. in ACS Applied Materials & Interfaces. 2023;15(37):44482-44492.
doi:10.1021/acsami.3c07747 .

Ho, Hsin-Chia, Smiljanić, Milutin, Jovanović, Zoran M., Čekada, Miha, Kovač, Janez, Koster, Gertjan, Hlinka, Jiří, Hodnik, Nejc, Spreitzer, Matjaž, "Robust SrTiO3 Passivation of Silicon Photocathode by Reduced Graphene Oxide for Solar Water Splitting" in ACS Applied Materials & Interfaces, 15, no. 37 (2023):44482-44492,
https://doi.org/10.1021/acsami.3c07747 . .

TY  - CONF
AU  - Spreitzer, Matjaž
AU  - Bučar, Lucija
AU  - Ho, Hsin-Chia
AU  - Trstenjak, Urška
AU  - Jovanović, Zoran
AU  - Koster, Gertjan
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11631
AB  - Epitaxial integration of transition metal oxides with semiconductors offers various phenomena for novel device applications, specifically bringing ferroelectric, ferromagnetic, electro-optic, photocatalytic, multiferroic, piezoelectric and other properties to the wellestablished silicon platform. A convenient way of integrating functional oxides with Si(001) substrate is through a SrTiO3 (STO) intermediate layer, which can be fabricated on Si(001) in epitaxial form and with high crystallinity using. The epitaxial growth of functional oxides on silicon substrates requires atomically defined surfaces, which are most effectively prepared using SrO- or Sr-induced deoxidation and passivation. As-prepared surfaces enable overgrowth with various oxides for novel device applications. In our work pulsed laser deposition (PLD) was used to integrate oxides with silicon. We showed the ability to prepare highly-ordered sub-monolayer SrO- and Sr-based surface structures, including two-domain (2×3)+(3×2) pattern at 1/6 ML Sr coverage as determined by the reflection high-energy electron diffraction (RHEED) technique. On the passivated silicon surface epitaxial layers of STO was grown by the method of kinetically controlled sequential deposition. Detailed study of initial deposition parameters proved to be extremely important in achieving epitaxial relation of STO with the underlying substrate. On as-prepared pseudo-substrate different functional films were gown for applications in microelectromechanical systems and electrochemical devices.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Epitaxial oxides on semiconductors: growth perspectives and device applications
SP  - 32
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11631
ER  - 

@conference{
author = "Spreitzer, Matjaž and Bučar, Lucija and Ho, Hsin-Chia and Trstenjak, Urška and Jovanović, Zoran and Koster, Gertjan",
year = "2023",
abstract = "Epitaxial integration of transition metal oxides with semiconductors offers various phenomena for novel device applications, specifically bringing ferroelectric, ferromagnetic, electro-optic, photocatalytic, multiferroic, piezoelectric and other properties to the wellestablished silicon platform. A convenient way of integrating functional oxides with Si(001) substrate is through a SrTiO3 (STO) intermediate layer, which can be fabricated on Si(001) in epitaxial form and with high crystallinity using. The epitaxial growth of functional oxides on silicon substrates requires atomically defined surfaces, which are most effectively prepared using SrO- or Sr-induced deoxidation and passivation. As-prepared surfaces enable overgrowth with various oxides for novel device applications. In our work pulsed laser deposition (PLD) was used to integrate oxides with silicon. We showed the ability to prepare highly-ordered sub-monolayer SrO- and Sr-based surface structures, including two-domain (2×3)+(3×2) pattern at 1/6 ML Sr coverage as determined by the reflection high-energy electron diffraction (RHEED) technique. On the passivated silicon surface epitaxial layers of STO was grown by the method of kinetically controlled sequential deposition. Detailed study of initial deposition parameters proved to be extremely important in achieving epitaxial relation of STO with the underlying substrate. On as-prepared pseudo-substrate different functional films were gown for applications in microelectromechanical systems and electrochemical devices.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Epitaxial oxides on semiconductors: growth perspectives and device applications",
pages = "32",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11631"
}

Spreitzer, M., Bučar, L., Ho, H., Trstenjak, U., Jovanović, Z.,& Koster, G.. (2023). Epitaxial oxides on semiconductors: growth perspectives and device applications. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 32.
https://hdl.handle.net/21.15107/rcub_vinar_11631

Spreitzer M, Bučar L, Ho H, Trstenjak U, Jovanović Z, Koster G. Epitaxial oxides on semiconductors: growth perspectives and device applications. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:32.
https://hdl.handle.net/21.15107/rcub_vinar_11631 .

Spreitzer, Matjaž, Bučar, Lucija, Ho, Hsin-Chia, Trstenjak, Urška, Jovanović, Zoran, Koster, Gertjan, "Epitaxial oxides on semiconductors: growth perspectives and device applications" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):32,
https://hdl.handle.net/21.15107/rcub_vinar_11631 .

TY  - CONF
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Kirilkin, Nikita
AU  - Vershinina, Tatiana
AU  - Orelovich, Oleg
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11645
AB  - Photoelectrochemical (PEC) cells for solar-energy conversion have received huge interest as a promising technology for renewable energy production. For the efficient application of such cells, it is necessary to develop adequate photoelectrodes. Recently, bismuth vanadate (BiVO4) has emerged as a promising photoanode due to its visible light harvesting properties, band edge positions and low-cost of synthesis. In this study, the effects of N5+ ion irradiation (75keV, 2 × 1014 and 4 × 1014 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films were examined. From X-ray diffraction (XRD) study can be concluded that initial monoclinic material didn’t sustain any phase transition after irradiation. Also, preferential orientation remained dominantly along [010] direction with a slightly increasing share of [121] oriented growth, especially after irradiation with 2 × 1014 ions/cm2 . XRD measurements showed shift towards the higher 2θ after irradiation which indicates that interplanar distances decreases. The highest level of crystallinity was observed for the sample irradiated with fluence of 4 × 1014 ions/cm2 . Scanning electron microscopy (SEM) revealed prismatic morphology of all samples with an average grain size of 600 nm without visible traces of irradiation.Raman spectroscopy confirmed presence of bands that correspond to the monoclinic scheelite phase. X-ray photoelectron spectroscopy (XPS) analysis of V 2p confirmed presence of V5+ and V4+ while analysis of O 1s confirmed presence of oxygen in the form of lattice oxygen and in the form of hydroxide. UV-Vis Diffuse Reflectance spectroscopy revealed that calculated band gap decreases with the increase of fluence.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
T1  - Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate
SP  - 67
EP  - 68
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11645
ER  - 

@conference{
author = "Jelić, Marko and Korneeva, Ekaterina and Kirilkin, Nikita and Vershinina, Tatiana and Orelovich, Oleg and Skuratov, Vladimir and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
abstract = "Photoelectrochemical (PEC) cells for solar-energy conversion have received huge interest as a promising technology for renewable energy production. For the efficient application of such cells, it is necessary to develop adequate photoelectrodes. Recently, bismuth vanadate (BiVO4) has emerged as a promising photoanode due to its visible light harvesting properties, band edge positions and low-cost of synthesis. In this study, the effects of N5+ ion irradiation (75keV, 2 × 1014 and 4 × 1014 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films were examined. From X-ray diffraction (XRD) study can be concluded that initial monoclinic material didn’t sustain any phase transition after irradiation. Also, preferential orientation remained dominantly along [010] direction with a slightly increasing share of [121] oriented growth, especially after irradiation with 2 × 1014 ions/cm2 . XRD measurements showed shift towards the higher 2θ after irradiation which indicates that interplanar distances decreases. The highest level of crystallinity was observed for the sample irradiated with fluence of 4 × 1014 ions/cm2 . Scanning electron microscopy (SEM) revealed prismatic morphology of all samples with an average grain size of 600 nm without visible traces of irradiation.Raman spectroscopy confirmed presence of bands that correspond to the monoclinic scheelite phase. X-ray photoelectron spectroscopy (XPS) analysis of V 2p confirmed presence of V5+ and V4+ while analysis of O 1s confirmed presence of oxygen in the form of lattice oxygen and in the form of hydroxide. UV-Vis Diffuse Reflectance spectroscopy revealed that calculated band gap decreases with the increase of fluence.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade",
title = "Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate",
pages = "67-68",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11645"
}

Jelić, M., Korneeva, E., Kirilkin, N., Vershinina, T., Orelovich, O., Skuratov, V., Jovanović, Z.,& Jovanović, S.. (2023). Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade
Belgrade : Serbian Ceramic Society., 67-68.
https://hdl.handle.net/21.15107/rcub_vinar_11645

Jelić M, Korneeva E, Kirilkin N, Vershinina T, Orelovich O, Skuratov V, Jovanović Z, Jovanović S. Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate. in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade. 2023;:67-68.
https://hdl.handle.net/21.15107/rcub_vinar_11645 .

Jelić, Marko, Korneeva, Ekaterina, Kirilkin, Nikita, Vershinina, Tatiana, Orelovich, Oleg, Skuratov, Vladimir, Jovanović, Zoran, Jovanović, Sonja, "Influence of N5+ ion irradiation on physicochemical properties of bismuth vanadate" in Advanced Ceramics and Application :11th Serbian Ceramic Society Conference : program and the book of abstracts; September 18-20, 2023; Belgrade (2023):67-68,
https://hdl.handle.net/21.15107/rcub_vinar_11645 .

TY  - CONF
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Kirilkin, Nikita
AU  - Vershinina, Tatiana
AU  - Orelovich, Oleg
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11654
AB  - Monoclinic bismuth vanadate (BiVO4) is considered to be one of the most promising photoanode materials for photoelectrochemical (PEC) water splitting due to its suitable band gap and band structure, good stability and low-cost synthesis. However, BiVO4 has poor charge transfer properties due to the high rate of electron-hole recombination and understanding the effects contributing to it is important for further improvements. Herein, we report the effect of swift heavy ion irradiation (Xe, 150 MeV, 1010 – 5×1011 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films. X-ray diffraction study (XRD) showed that irradiated material preserved initial monoclinic scheelite crystal phase and preferential growth along [010] direction. As the fluence increased, a shift of the diffraction maxima towards lower 2θ values was observed indicating increased interplanar distances. Also, for the 5×1011 ions/cm2 irradiated sample, high degree of amorphization was noticed. Scanning electron microscopy (SEM) of all samples showed prismatic grains with an average size of 600 nm. In irradiated samples formation of ion tracks, ~10 nm in diameter, was observed. X-ray photoelectron spectroscopy (XPS) analysis of Bi 4f, V 2p and O 1s states showed that, after irradiation, increased amounts of V4+ and oxygen in the form of hydroxide occurred, especially at higher fluences. By using UV-Vis Diffuse Reflectance spectroscopy we showed that band gap decreased with the increase of fluence. Photocurrent densities obtained from linear sweep voltammetry indicated that irradiation with fluences higher than 1010 ions/cm2 have a notable negative effect on PEC oxygen evolution reaction. However, 1-hour-long chronoamperometry measurements of 1010 ions/cm2 irradiated sample revealed an increase of photocurrent densities. In order to get a better insight into preceding phenomena, we performed XRD, SEM and XPS analysis after PEC process.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate
SP  - 95
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11654
ER  - 

@conference{
author = "Jelić, Marko and Korneeva, Ekaterina and Kirilkin, Nikita and Vershinina, Tatiana and Orelovich, Oleg and Skuratov, Vladimir and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
abstract = "Monoclinic bismuth vanadate (BiVO4) is considered to be one of the most promising photoanode materials for photoelectrochemical (PEC) water splitting due to its suitable band gap and band structure, good stability and low-cost synthesis. However, BiVO4 has poor charge transfer properties due to the high rate of electron-hole recombination and understanding the effects contributing to it is important for further improvements. Herein, we report the effect of swift heavy ion irradiation (Xe, 150 MeV, 1010 – 5×1011 ions/cm2 ) on physicochemical properties of hydrothermally synthesized BiVO4 thin films. X-ray diffraction study (XRD) showed that irradiated material preserved initial monoclinic scheelite crystal phase and preferential growth along [010] direction. As the fluence increased, a shift of the diffraction maxima towards lower 2θ values was observed indicating increased interplanar distances. Also, for the 5×1011 ions/cm2 irradiated sample, high degree of amorphization was noticed. Scanning electron microscopy (SEM) of all samples showed prismatic grains with an average size of 600 nm. In irradiated samples formation of ion tracks, ~10 nm in diameter, was observed. X-ray photoelectron spectroscopy (XPS) analysis of Bi 4f, V 2p and O 1s states showed that, after irradiation, increased amounts of V4+ and oxygen in the form of hydroxide occurred, especially at higher fluences. By using UV-Vis Diffuse Reflectance spectroscopy we showed that band gap decreased with the increase of fluence. Photocurrent densities obtained from linear sweep voltammetry indicated that irradiation with fluences higher than 1010 ions/cm2 have a notable negative effect on PEC oxygen evolution reaction. However, 1-hour-long chronoamperometry measurements of 1010 ions/cm2 irradiated sample revealed an increase of photocurrent densities. In order to get a better insight into preceding phenomena, we performed XRD, SEM and XPS analysis after PEC process.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate",
pages = "95",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11654"
}

Jelić, M., Korneeva, E., Kirilkin, N., Vershinina, T., Orelovich, O., Skuratov, V., Jovanović, Z.,& Jovanović, S.. (2023). The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 95.
https://hdl.handle.net/21.15107/rcub_vinar_11654

Jelić M, Korneeva E, Kirilkin N, Vershinina T, Orelovich O, Skuratov V, Jovanović Z, Jovanović S. The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:95.
https://hdl.handle.net/21.15107/rcub_vinar_11654 .

Jelić, Marko, Korneeva, Ekaterina, Kirilkin, Nikita, Vershinina, Tatiana, Orelovich, Oleg, Skuratov, Vladimir, Jovanović, Zoran, Jovanović, Sonja, "The effect of swift heavy ion irradiation on physicochemical properties of monoclinic bismuth vanadate" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):95,
https://hdl.handle.net/21.15107/rcub_vinar_11654 .

TY  - CONF
AU  - Jovanović, Sonja
AU  - Rmuš Mravik, Jelena
AU  - Grujičić, Marija
AU  - Petković, Darija
AU  - Pejčić, Milica
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11659
AB  - In the past two decades spinel ferrites nanoparticles have been extensively investigated due to their potential applications in a variety of fields (data storage, catalysis, energy, environment, biomedicine, etc.). In the present work, zinc ferrite nanoparticles with different copper content (Zn(1-x)CuxFe2O4; x=0, 0.2, 0.4, 0.6, and 0.8) but with the same particle size distribution and amount of oleic acid as capping agent were prepared by solvothermal synthesis and the physicochemical properties of as-prepared samples were investigated. The prepared samples were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and vibrating sample magnetometry (VSM). The XRD results show that all the diffraction maxima correspond to the cubic spinel structure, while TEM images reviled that samples are consisted of sphere-like particles, 5-7 nm in size. The presence of oleic acid on the surface of nanoparticles was confirmed by FTIR analysis. The magnetic measurements revealed superparamagnetic behavior of obtained powders, with gradual increase of saturation magnetization.
PB  - Belgrade : Materials Research Society of Serbia
C3  - YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
T1  - Physicochemical properties of solvothermaly synthesized zinc copper ferrite nanoparticles
SP  - 157
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11659
ER  - 

@conference{
author = "Jovanović, Sonja and Rmuš Mravik, Jelena and Grujičić, Marija and Petković, Darija and Pejčić, Milica and Jovanović, Zoran",
year = "2023",
abstract = "In the past two decades spinel ferrites nanoparticles have been extensively investigated due to their potential applications in a variety of fields (data storage, catalysis, energy, environment, biomedicine, etc.). In the present work, zinc ferrite nanoparticles with different copper content (Zn(1-x)CuxFe2O4; x=0, 0.2, 0.4, 0.6, and 0.8) but with the same particle size distribution and amount of oleic acid as capping agent were prepared by solvothermal synthesis and the physicochemical properties of as-prepared samples were investigated. The prepared samples were characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared spectroscopy (FT-IR) and vibrating sample magnetometry (VSM). The XRD results show that all the diffraction maxima correspond to the cubic spinel structure, while TEM images reviled that samples are consisted of sphere-like particles, 5-7 nm in size. The presence of oleic acid on the surface of nanoparticles was confirmed by FTIR analysis. The magnetic measurements revealed superparamagnetic behavior of obtained powders, with gradual increase of saturation magnetization.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro",
title = "Physicochemical properties of solvothermaly synthesized zinc copper ferrite nanoparticles",
pages = "157",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11659"
}

Jovanović, S., Rmuš Mravik, J., Grujičić, M., Petković, D., Pejčić, M.,& Jovanović, Z.. (2023). Physicochemical properties of solvothermaly synthesized zinc copper ferrite nanoparticles. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro
Belgrade : Materials Research Society of Serbia., 157.
https://hdl.handle.net/21.15107/rcub_vinar_11659

Jovanović S, Rmuš Mravik J, Grujičić M, Petković D, Pejčić M, Jovanović Z. Physicochemical properties of solvothermaly synthesized zinc copper ferrite nanoparticles. in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro. 2023;:157.
https://hdl.handle.net/21.15107/rcub_vinar_11659 .

Jovanović, Sonja, Rmuš Mravik, Jelena, Grujičić, Marija, Petković, Darija, Pejčić, Milica, Jovanović, Zoran, "Physicochemical properties of solvothermaly synthesized zinc copper ferrite nanoparticles" in YUCOMAT 2023 : 24th Annual Conference YUCOMAT 2023 : programme and the book of abstracts; September 4-8, 2023; Herceg Novi, Montenegro (2023):157,
https://hdl.handle.net/21.15107/rcub_vinar_11659 .

TY  - CONF
AU  - Grujičić, Marija
AU  - Jelić, Marko
AU  - Stojković Simatović, Ivana
AU  - Bajuk Bogdanović, Danica
AU  - Petković, Darija
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12317
AB  - In this study, solvothermally synthesized nanoparticles of cobalt ferrite (CoFe2O4, CFO) and Zn/Ga-dopped cobalt ferrite (Co0.5Zn0.5Fe2O4, CFO_Zn and CoFe1.5Ga0.5O4, CFO_Ga, respectively) with dihydrocaffeic acid (DHCA) as a surfactant were examined for electrochemical detection of gallic acid. Based on X-ray diffraction analysis, diffraction maxima of all samples correspond to the cubic spinel phase, while transmission electron microscopy showed that the nanoparticles are non-agglomerated, sphere-like with an average size of 5±1 nm. The presence of DHCA on the surface of nanoparticles was confirmed by Fourier Transform Infrared Spectroscopy (FTIR). For the purpose of electrochemical detection of gallic acid the modified glassy carbon electrode (m-GCE) was prepared from CFO, CFO_Zn and CFO_Ga nanoparticles. Initial tests have shown instability/disintegration of m-GCE in aqueous solutions, because of which samples were annealed at 450 °C in air. Cyclic voltammograms of all annealed samples showed good reversibility in the system [Fe(CN)6] 3-/4- . The most efficient electron transfer was achieved when the mass ratio between sample and Nafion® was 85:15, respectively. The best sensitivity to gallic acid (10-4 M, in Britton-Robinson buffer) was observed for CFO_Zn sample. Results are showing that by selective functionalization and surface modification of nanoparticles, it is possible to optimize the electrochemical properties suitable for sensing, which is the basis of this method and the goal of further research.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Enhanced electrochemical detection of gallic acid using modified glassy carbon electrodes with Zn/Ga-dopped cobalt ferrite
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12317
ER  - 

@conference{
author = "Grujičić, Marija and Jelić, Marko and Stojković Simatović, Ivana and Bajuk Bogdanović, Danica and Petković, Darija and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
abstract = "In this study, solvothermally synthesized nanoparticles of cobalt ferrite (CoFe2O4, CFO) and Zn/Ga-dopped cobalt ferrite (Co0.5Zn0.5Fe2O4, CFO_Zn and CoFe1.5Ga0.5O4, CFO_Ga, respectively) with dihydrocaffeic acid (DHCA) as a surfactant were examined for electrochemical detection of gallic acid. Based on X-ray diffraction analysis, diffraction maxima of all samples correspond to the cubic spinel phase, while transmission electron microscopy showed that the nanoparticles are non-agglomerated, sphere-like with an average size of 5±1 nm. The presence of DHCA on the surface of nanoparticles was confirmed by Fourier Transform Infrared Spectroscopy (FTIR). For the purpose of electrochemical detection of gallic acid the modified glassy carbon electrode (m-GCE) was prepared from CFO, CFO_Zn and CFO_Ga nanoparticles. Initial tests have shown instability/disintegration of m-GCE in aqueous solutions, because of which samples were annealed at 450 °C in air. Cyclic voltammograms of all annealed samples showed good reversibility in the system [Fe(CN)6] 3-/4- . The most efficient electron transfer was achieved when the mass ratio between sample and Nafion® was 85:15, respectively. The best sensitivity to gallic acid (10-4 M, in Britton-Robinson buffer) was observed for CFO_Zn sample. Results are showing that by selective functionalization and surface modification of nanoparticles, it is possible to optimize the electrochemical properties suitable for sensing, which is the basis of this method and the goal of further research.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Enhanced electrochemical detection of gallic acid using modified glassy carbon electrodes with Zn/Ga-dopped cobalt ferrite",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12317"
}

Grujičić, M., Jelić, M., Stojković Simatović, I., Bajuk Bogdanović, D., Petković, D., Jovanović, Z.,& Jovanović, S.. (2023). Enhanced electrochemical detection of gallic acid using modified glassy carbon electrodes with Zn/Ga-dopped cobalt ferrite. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 44-44.
https://hdl.handle.net/21.15107/rcub_vinar_12317

Grujičić M, Jelić M, Stojković Simatović I, Bajuk Bogdanović D, Petković D, Jovanović Z, Jovanović S. Enhanced electrochemical detection of gallic acid using modified glassy carbon electrodes with Zn/Ga-dopped cobalt ferrite. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:44-44.
https://hdl.handle.net/21.15107/rcub_vinar_12317 .

Grujičić, Marija, Jelić, Marko, Stojković Simatović, Ivana, Bajuk Bogdanović, Danica, Petković, Darija, Jovanović, Zoran, Jovanović, Sonja, "Enhanced electrochemical detection of gallic acid using modified glassy carbon electrodes with Zn/Ga-dopped cobalt ferrite" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):44-44,
https://hdl.handle.net/21.15107/rcub_vinar_12317 .

TY  - CONF
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Kirilkin, Nikita
AU  - Vershinina, Tatiana
AU  - Orelovich, Oleg
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12324
AB  - Photoelectrochemical (PEC) water splitting is a promising route for solar energy harvesting and storage. The most challenging obstacle for efficient water splitting is development of catalysts for oxygen evolution reaction (OER). Monoclinic bismuth vanadate (BiVO4, BVO) stands out as an excellent photoanode material due to its high stability in near-neutral electrolytes, suitable band structure and low-cost synthesis. However, pronounced charge recombination is a huge limiting factor and understanding the effects contributing to it is important for further improvements. In present study, we report the effect of swift heavy ion (SHI) irradiation (Xe, 150 MeV, 1 × 1010 – 5 × 1011 ions cm-2 ) on physicochemical properties of hydrothermally synthesized BVO thin films. X-ray diffraction (XRD) study showed that irradiated material preserved initial monoclinic scheelite phase and preferential growth along [010] direction together with the presence of notable amorphization at the highest fluence. Scanning electron microscopy (SEM) of all samples showed prismatic grains with an average size of 600 nm with the appearance of ion tracks after irradiation. More detailed examination of 1 × 1010 ions cm-2 irradiated sample by transmission electron microscopy (TEM) revealed presence of amorphous ion tracks (~ 10 nm in diameter) and hillocks at the BVO surface (~ 10 nm in height). Raman spectra showed bands that correspond to the monoclinic scheelite phase as well as the presence of new bands for 5 × 1011 ion cm-2 irradiated sample at 420 and 915 cm-1 that originate from complex vanadium oxides. X-ray photoelectron spectroscopy (XPS) after SHI irradiation showed an increase of V4+ states and oxygen vacancies, especially at higher fluences. Diffuse reflectance spectroscopy (DRS) measurements showed decrease of band gap with the increase of fluence. Photocurrent densities, obtained from 1-hour-long chronoamperometry measurements, showed that irradiation with 1 × 1010 ions cm-2 fluence leads to gradual recovery of PEC oxygen evolution with time. XRD, SEM and XPS measurements performed after PEC reveal complex changes in the BVO, including dissolution of the material along ion tracks.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - Photoelectrochemical water oxidation properties of bismuth vanadate photoanode irradiated by swift heavy ions
SP  - 53
EP  - 53
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12324
ER  - 

@conference{
author = "Jelić, Marko and Korneeva, Ekaterina and Kirilkin, Nikita and Vershinina, Tatiana and Orelovich, Oleg and Skuratov, Vladimir and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
abstract = "Photoelectrochemical (PEC) water splitting is a promising route for solar energy harvesting and storage. The most challenging obstacle for efficient water splitting is development of catalysts for oxygen evolution reaction (OER). Monoclinic bismuth vanadate (BiVO4, BVO) stands out as an excellent photoanode material due to its high stability in near-neutral electrolytes, suitable band structure and low-cost synthesis. However, pronounced charge recombination is a huge limiting factor and understanding the effects contributing to it is important for further improvements. In present study, we report the effect of swift heavy ion (SHI) irradiation (Xe, 150 MeV, 1 × 1010 – 5 × 1011 ions cm-2 ) on physicochemical properties of hydrothermally synthesized BVO thin films. X-ray diffraction (XRD) study showed that irradiated material preserved initial monoclinic scheelite phase and preferential growth along [010] direction together with the presence of notable amorphization at the highest fluence. Scanning electron microscopy (SEM) of all samples showed prismatic grains with an average size of 600 nm with the appearance of ion tracks after irradiation. More detailed examination of 1 × 1010 ions cm-2 irradiated sample by transmission electron microscopy (TEM) revealed presence of amorphous ion tracks (~ 10 nm in diameter) and hillocks at the BVO surface (~ 10 nm in height). Raman spectra showed bands that correspond to the monoclinic scheelite phase as well as the presence of new bands for 5 × 1011 ion cm-2 irradiated sample at 420 and 915 cm-1 that originate from complex vanadium oxides. X-ray photoelectron spectroscopy (XPS) after SHI irradiation showed an increase of V4+ states and oxygen vacancies, especially at higher fluences. Diffuse reflectance spectroscopy (DRS) measurements showed decrease of band gap with the increase of fluence. Photocurrent densities, obtained from 1-hour-long chronoamperometry measurements, showed that irradiation with 1 × 1010 ions cm-2 fluence leads to gradual recovery of PEC oxygen evolution with time. XRD, SEM and XPS measurements performed after PEC reveal complex changes in the BVO, including dissolution of the material along ion tracks.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "Photoelectrochemical water oxidation properties of bismuth vanadate photoanode irradiated by swift heavy ions",
pages = "53-53",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12324"
}

Jelić, M., Korneeva, E., Kirilkin, N., Vershinina, T., Orelovich, O., Skuratov, V., Jovanović, Z.,& Jovanović, S.. (2023). Photoelectrochemical water oxidation properties of bismuth vanadate photoanode irradiated by swift heavy ions. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 53-53.
https://hdl.handle.net/21.15107/rcub_vinar_12324

Jelić M, Korneeva E, Kirilkin N, Vershinina T, Orelovich O, Skuratov V, Jovanović Z, Jovanović S. Photoelectrochemical water oxidation properties of bismuth vanadate photoanode irradiated by swift heavy ions. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:53-53.
https://hdl.handle.net/21.15107/rcub_vinar_12324 .

Jelić, Marko, Korneeva, Ekaterina, Kirilkin, Nikita, Vershinina, Tatiana, Orelovich, Oleg, Skuratov, Vladimir, Jovanović, Zoran, Jovanović, Sonja, "Photoelectrochemical water oxidation properties of bismuth vanadate photoanode irradiated by swift heavy ions" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):53-53,
https://hdl.handle.net/21.15107/rcub_vinar_12324 .

TY  - CONF
AU  - Petković, Darija
AU  - Chia-Ho, Hsin
AU  - Trstenjak, Urška
AU  - Kovač, Janez
AU  - Vengust, Damjan
AU  - Spreitzer, Matjaž
AU  - Jovanović, Zoran
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12327
AB  - Epitaxy represents a process of crystal growth or material deposition in which the new created layers have a high degree of crystallographic alignment with the substrate lattice. In this research 10 nm-thick thin films of strontium titanate (STO) were grown using pulsed laser deposition (PLD) method on Si(001) whose surface was either deoxidized with strontium oxide (SrO) or buffered by reduced graphene oxide (rGO) in combination with SrO deoxidation. In addition to differently prepared Si(001) surface, the effect of deposition temperature on the crystalline structure of the STO thin films was also examined. Reflection high energy electron diffraction (RHEED), atomic force microscopy (AFM), X-ray diffraction (XRD), X-ray reflectivity (XRR) and X-ray photoelectron spectroscopy (XPS) methods were used to examine the properties of the grown films. It was concluded that the STO thin film grown on the rGO-coated Si substrate at 515 °C shows the highest crystallinity with a smooth surface, while the film deposited on the bare silicon has amorphous structure. The STO films grown at 700 °C show textured or polycrystalline structure. Good crystallinity, epitaxial alignment, and clean interface are the major requirements for STO/Si and the STO/rGO/Si heterostructure for making an efficient and stable Si photocathode for the photoelectrochemical (PEC) water splitting. Our future work will be directed toward understanding how the obtained interfaces and crystalline structure of STO films are influencing the PEC process.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
T1  - PLD growth of strontium titanate thin films on SrO-deoxidized and rGO-buffered Si(001) substrate
SP  - 60
EP  - 60
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12327
ER  - 

@conference{
author = "Petković, Darija and Chia-Ho, Hsin and Trstenjak, Urška and Kovač, Janez and Vengust, Damjan and Spreitzer, Matjaž and Jovanović, Zoran",
year = "2023",
abstract = "Epitaxy represents a process of crystal growth or material deposition in which the new created layers have a high degree of crystallographic alignment with the substrate lattice. In this research 10 nm-thick thin films of strontium titanate (STO) were grown using pulsed laser deposition (PLD) method on Si(001) whose surface was either deoxidized with strontium oxide (SrO) or buffered by reduced graphene oxide (rGO) in combination with SrO deoxidation. In addition to differently prepared Si(001) surface, the effect of deposition temperature on the crystalline structure of the STO thin films was also examined. Reflection high energy electron diffraction (RHEED), atomic force microscopy (AFM), X-ray diffraction (XRD), X-ray reflectivity (XRR) and X-ray photoelectron spectroscopy (XPS) methods were used to examine the properties of the grown films. It was concluded that the STO thin film grown on the rGO-coated Si substrate at 515 °C shows the highest crystallinity with a smooth surface, while the film deposited on the bare silicon has amorphous structure. The STO films grown at 700 °C show textured or polycrystalline structure. Good crystallinity, epitaxial alignment, and clean interface are the major requirements for STO/Si and the STO/rGO/Si heterostructure for making an efficient and stable Si photocathode for the photoelectrochemical (PEC) water splitting. Our future work will be directed toward understanding how the obtained interfaces and crystalline structure of STO films are influencing the PEC process.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts",
title = "PLD growth of strontium titanate thin films on SrO-deoxidized and rGO-buffered Si(001) substrate",
pages = "60-60",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12327"
}

Petković, D., Chia-Ho, H., Trstenjak, U., Kovač, J., Vengust, D., Spreitzer, M.,& Jovanović, Z.. (2023). PLD growth of strontium titanate thin films on SrO-deoxidized and rGO-buffered Si(001) substrate. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts
Belgrade : Institute of Technical Sciences of SASA., 60-60.
https://hdl.handle.net/21.15107/rcub_vinar_12327

Petković D, Chia-Ho H, Trstenjak U, Kovač J, Vengust D, Spreitzer M, Jovanović Z. PLD growth of strontium titanate thin films on SrO-deoxidized and rGO-buffered Si(001) substrate. in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts. 2023;:60-60.
https://hdl.handle.net/21.15107/rcub_vinar_12327 .

Petković, Darija, Chia-Ho, Hsin, Trstenjak, Urška, Kovač, Janez, Vengust, Damjan, Spreitzer, Matjaž, Jovanović, Zoran, "PLD growth of strontium titanate thin films on SrO-deoxidized and rGO-buffered Si(001) substrate" in 21st Young Researchers' Conference Materials Sciences and Engineering : program and the book of abstracts (2023):60-60,
https://hdl.handle.net/21.15107/rcub_vinar_12327 .

TY  - CONF
AU  - Petković, Darija
AU  - Chia-Ho, Hsin
AU  - Trstenjak, Urška
AU  - Kovač, Janez
AU  - Vengust, Damjan
AU  - Jovanović, Zoran
AU  - Spreitzer, Matjaž
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12333
AB  - Epitaxial films of metal oxides deposited on silicon substrates represent a new type of material that could be used as protective (or electroactive) layer in the photoelectrochemical water splitting. To understand the influence of crystalline and interfacial properties of oxide layer on the water splitting process a ~10 nm strontium titanate (STO) films have been grown using the PLD method on bare and reduced graphene oxide (rGO) buffered silicon substrate. Our approach relied on the oxide-silicon integration using combination of SrO-assisted deoxidation and controllable coverage of silicon surface with a mono- to threelayer of spin-coated GO. The STO films have been grown at 515 and 700 °C and various experimental techniques were used to examine the surface and crystalline properties of grown films (reflection high energy electron diffraction, atomic force microscopy, scanning electron microscopy, X-ray diffraction, X-ray reflectivity and X-ray photoelectron spectroscopy). The results show that the best the crystallinity of the STO thin films was obtained on rGO/SrO deoxidized silicon surface at 515 °C. Future studies will be devoted to electrochemical characterization of the grown films, that will help to establish clearer link on how the interface and crystalline parameters affect the water splitting process.
PB  - EU COST Action OPERA
C3  - Workshop “Application-oriented material development” : Book of abstracts
T1  - PLD growth of strontium titanate thin films on silicon substrate for photoelectrochemical water-splitting
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12333
ER  - 

@conference{
author = "Petković, Darija and Chia-Ho, Hsin and Trstenjak, Urška and Kovač, Janez and Vengust, Damjan and Jovanović, Zoran and Spreitzer, Matjaž",
year = "2023",
abstract = "Epitaxial films of metal oxides deposited on silicon substrates represent a new type of material that could be used as protective (or electroactive) layer in the photoelectrochemical water splitting. To understand the influence of crystalline and interfacial properties of oxide layer on the water splitting process a ~10 nm strontium titanate (STO) films have been grown using the PLD method on bare and reduced graphene oxide (rGO) buffered silicon substrate. Our approach relied on the oxide-silicon integration using combination of SrO-assisted deoxidation and controllable coverage of silicon surface with a mono- to threelayer of spin-coated GO. The STO films have been grown at 515 and 700 °C and various experimental techniques were used to examine the surface and crystalline properties of grown films (reflection high energy electron diffraction, atomic force microscopy, scanning electron microscopy, X-ray diffraction, X-ray reflectivity and X-ray photoelectron spectroscopy). The results show that the best the crystallinity of the STO thin films was obtained on rGO/SrO deoxidized silicon surface at 515 °C. Future studies will be devoted to electrochemical characterization of the grown films, that will help to establish clearer link on how the interface and crystalline parameters affect the water splitting process.",
publisher = "EU COST Action OPERA",
journal = "Workshop “Application-oriented material development” : Book of abstracts",
title = "PLD growth of strontium titanate thin films on silicon substrate for photoelectrochemical water-splitting",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12333"
}

Petković, D., Chia-Ho, H., Trstenjak, U., Kovač, J., Vengust, D., Jovanović, Z.,& Spreitzer, M.. (2023). PLD growth of strontium titanate thin films on silicon substrate for photoelectrochemical water-splitting. in Workshop “Application-oriented material development” : Book of abstracts
EU COST Action OPERA..
https://hdl.handle.net/21.15107/rcub_vinar_12333

Petković D, Chia-Ho H, Trstenjak U, Kovač J, Vengust D, Jovanović Z, Spreitzer M. PLD growth of strontium titanate thin films on silicon substrate for photoelectrochemical water-splitting. in Workshop “Application-oriented material development” : Book of abstracts. 2023;.
https://hdl.handle.net/21.15107/rcub_vinar_12333 .

Petković, Darija, Chia-Ho, Hsin, Trstenjak, Urška, Kovač, Janez, Vengust, Damjan, Jovanović, Zoran, Spreitzer, Matjaž, "PLD growth of strontium titanate thin films on silicon substrate for photoelectrochemical water-splitting" in Workshop “Application-oriented material development” : Book of abstracts (2023),
https://hdl.handle.net/21.15107/rcub_vinar_12333 .

TY  - CONF
AU  - Jelić, Marko
AU  - Korneeva, Ekaterina
AU  - Kirilkin, Nikita
AU  - Vershinina, Tatiana
AU  - Orelovich, Oleg
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
AU  - Jovanović, Sonja
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12433
PB  - Russia, Dubna : Joint Institute for Nuclear Research
C3  - AYSS-2023 : The XXVII International Scientific Conference of Young Scientists and Specialists
T1  - The impact of swift heavy ion irradiation on bismuth vanadate photoanode for photoelectrochemical water oxidation
SP  - 1238
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12433
ER  - 

@conference{
author = "Jelić, Marko and Korneeva, Ekaterina and Kirilkin, Nikita and Vershinina, Tatiana and Orelovich, Oleg and Skuratov, Vladimir and Jovanović, Zoran and Jovanović, Sonja",
year = "2023",
publisher = "Russia, Dubna : Joint Institute for Nuclear Research",
journal = "AYSS-2023 : The XXVII International Scientific Conference of Young Scientists and Specialists",
title = "The impact of swift heavy ion irradiation on bismuth vanadate photoanode for photoelectrochemical water oxidation",
pages = "1238",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12433"
}

Jelić, M., Korneeva, E., Kirilkin, N., Vershinina, T., Orelovich, O., Skuratov, V., Jovanović, Z.,& Jovanović, S.. (2023). The impact of swift heavy ion irradiation on bismuth vanadate photoanode for photoelectrochemical water oxidation. in AYSS-2023 : The XXVII International Scientific Conference of Young Scientists and Specialists
Russia, Dubna : Joint Institute for Nuclear Research., 1238.
https://hdl.handle.net/21.15107/rcub_vinar_12433

Jelić M, Korneeva E, Kirilkin N, Vershinina T, Orelovich O, Skuratov V, Jovanović Z, Jovanović S. The impact of swift heavy ion irradiation on bismuth vanadate photoanode for photoelectrochemical water oxidation. in AYSS-2023 : The XXVII International Scientific Conference of Young Scientists and Specialists. 2023;:1238.
https://hdl.handle.net/21.15107/rcub_vinar_12433 .

Jelić, Marko, Korneeva, Ekaterina, Kirilkin, Nikita, Vershinina, Tatiana, Orelovich, Oleg, Skuratov, Vladimir, Jovanović, Zoran, Jovanović, Sonja, "The impact of swift heavy ion irradiation on bismuth vanadate photoanode for photoelectrochemical water oxidation" in AYSS-2023 : The XXVII International Scientific Conference of Young Scientists and Specialists (2023):1238,
https://hdl.handle.net/21.15107/rcub_vinar_12433 .