Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine

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Synthesis, processing and characterization of nanostructured materials for application in the field of energy, mechanical engineering, environmental protection and biomedicine (en)
Синтеза, процесирање и карактеризација наноструктурних материјала за примену у области енергије, механичког инжењерства, заштите животне стредине и биомедицине (sr)
Sinteza, procesiranje i karakterizacija nanostrukturnih materijala za primenu u oblasti energije, mehaničkog inženjerstva, zaštite životne stredine i biomedicine (sr_RS)
Authors

Publications

Electromagnetic characterization of Ni0.5Zn0.3Co0.2Fe2O4 bulk ceramics in the 1 MHz-12 GHz frequency range

Zarubica, Aleksandra; Krstić, Jugoslav B.; Popović, Dejan; Krstić, Aleksandra; Ljupković, Radomir; Ranđelović, Marjan; Matović, Branko

(2021)

TY  - JOUR
AU  - Zarubica, Aleksandra
AU  - Krstić, Jugoslav B.
AU  - Popović, Dejan
AU  - Krstić, Aleksandra
AU  - Ljupković, Radomir
AU  - Ranđelović, Marjan
AU  - Matović, Branko
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9900
AB  - In this paper, NiZnCo ferrite was produced by solid state synthesis, calcination at 1000 °C and sintering at 1250 °C in air atmosphere. The microstructure and phases of the sintered sample were analysed by scanning electron microscopy and X-ray diffraction, respectively. The magnetic properties of the ferrite were evaluated by magnetization and magnetostriction measurements. The complex magnetic permeability and complex permittivity were also measured between 1 MHz-12 GHz and the reflection loss (RL) was calculated in the 100 MHz-12 GHz frequency range. The results show that the ferrite sample presents magnetostrictive behaviour and a saturation magnetization of 71 Am2/kg. Complex permittivity measurements indicate that the material has dielectric behaviour in the whole frequency range studied, with ε′ varying between 7-40, and magnetic behaviour in frequencies between 1 MHz-5 GHz. The minimum RL was found at frequencies between 2.4-3.3 GHz and the calculated RL value for a thickness of 3 mm was lower than −10 dB in frequencies between 2.3-7.3 GHz. These results indicate potential application as microwave absorber in the S band.
T2  - Processing and Application of Ceramics
T1  - Electromagnetic characterization of Ni0.5Zn0.3Co0.2Fe2O4 bulk ceramics in the 1 MHz-12 GHz frequency range
VL  - 15
IS  - 2
SP  - 136
DO  - 10.2298/PAC2102111Z
ER  - 
@article{
author = "Zarubica, Aleksandra and Krstić, Jugoslav B. and Popović, Dejan and Krstić, Aleksandra and Ljupković, Radomir and Ranđelović, Marjan and Matović, Branko",
year = "2021",
abstract = "In this paper, NiZnCo ferrite was produced by solid state synthesis, calcination at 1000 °C and sintering at 1250 °C in air atmosphere. The microstructure and phases of the sintered sample were analysed by scanning electron microscopy and X-ray diffraction, respectively. The magnetic properties of the ferrite were evaluated by magnetization and magnetostriction measurements. The complex magnetic permeability and complex permittivity were also measured between 1 MHz-12 GHz and the reflection loss (RL) was calculated in the 100 MHz-12 GHz frequency range. The results show that the ferrite sample presents magnetostrictive behaviour and a saturation magnetization of 71 Am2/kg. Complex permittivity measurements indicate that the material has dielectric behaviour in the whole frequency range studied, with ε′ varying between 7-40, and magnetic behaviour in frequencies between 1 MHz-5 GHz. The minimum RL was found at frequencies between 2.4-3.3 GHz and the calculated RL value for a thickness of 3 mm was lower than −10 dB in frequencies between 2.3-7.3 GHz. These results indicate potential application as microwave absorber in the S band.",
journal = "Processing and Application of Ceramics",
title = "Electromagnetic characterization of Ni0.5Zn0.3Co0.2Fe2O4 bulk ceramics in the 1 MHz-12 GHz frequency range",
volume = "15",
number = "2",
pages = "136",
doi = "10.2298/PAC2102111Z"
}
Zarubica, A., Krstić, J. B., Popović, D., Krstić, A., Ljupković, R., Ranđelović, M.,& Matović, B.. (2021). Electromagnetic characterization of Ni0.5Zn0.3Co0.2Fe2O4 bulk ceramics in the 1 MHz-12 GHz frequency range. in Processing and Application of Ceramics, 15(2), 136.
https://doi.org/10.2298/PAC2102111Z
Zarubica A, Krstić JB, Popović D, Krstić A, Ljupković R, Ranđelović M, Matović B. Electromagnetic characterization of Ni0.5Zn0.3Co0.2Fe2O4 bulk ceramics in the 1 MHz-12 GHz frequency range. in Processing and Application of Ceramics. 2021;15(2):136.
doi:10.2298/PAC2102111Z .
Zarubica, Aleksandra, Krstić, Jugoslav B., Popović, Dejan, Krstić, Aleksandra, Ljupković, Radomir, Ranđelović, Marjan, Matović, Branko, "Electromagnetic characterization of Ni0.5Zn0.3Co0.2Fe2O4 bulk ceramics in the 1 MHz-12 GHz frequency range" in Processing and Application of Ceramics, 15, no. 2 (2021):136,
https://doi.org/10.2298/PAC2102111Z . .

Mechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranes

Milanović, Igor; Biliškov, Nikola; Užarević, Krunoslav; Lukin, Stipe; Etter, Martin; Halasz, Ivan

(2021)

TY  - JOUR
AU  - Milanović, Igor
AU  - Biliškov, Nikola
AU  - Užarević, Krunoslav
AU  - Lukin, Stipe
AU  - Etter, Martin
AU  - Halasz, Ivan
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9088
AB  - Metallic amidoboranes are widely investigated candidates for solid-state hydrogen storage, and much focus shifted recently toward bimetallic amidoboranes. Bimetallic amidoboranes are expected to introduce novel and enhanced physicochemical properties regarding storage and stability. However, these materials are still scarce and mostly grouped around magnesium- or aluminum-containing compounds. We present here a rapid and green mechanochemical solvent-free synthesis of two novel calcium-containing bimetallic amidoboranes, Li2Ca(NH2BH3)4 and Na2Ca(NH2BH3)4, from metal hydrides and ammonia borane. The insight into mechanochemical syntheses is provided by the in situ tandem synchrotron X-ray diffraction and thermal monitoring. The in situ data reveal how the choice of alkali metal hydride governs the course of reactions and their thermal profiles. In situ monitoring of thermal dehydrogenation of these materials is conducted by mass spectrometry and infrared spectroscopy, showing how the course of thermal decomposition varies depending on the structure of the amidoborane, resulting however in the same final products. These new hydrogen-rich bimetallic amidoboranes are structurally characterized by high-resolution powder X-ray diffraction, and they both show potential for hydrogen storage applications: high theoretical gravimetric capacities and low desorption temperatures of hydrogen without the significant presence of harmful gases. We also show how the choice of the milling reactor material can be decisive for the efficiency and overall success of the mechanochemical synthetic procedure, which may impact the design of milling syntheses for other thermally labile chemical systems. © 2021 American Chemical Society.
T2  - ACS Sustainable Chemistry & Engineering
T1  - Mechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranes
VL  - 9
IS  - 5
SP  - 2089
EP  - 2099
DO  - 10.1021/acssuschemeng.0c06839
ER  - 
@article{
author = "Milanović, Igor and Biliškov, Nikola and Užarević, Krunoslav and Lukin, Stipe and Etter, Martin and Halasz, Ivan",
year = "2021",
abstract = "Metallic amidoboranes are widely investigated candidates for solid-state hydrogen storage, and much focus shifted recently toward bimetallic amidoboranes. Bimetallic amidoboranes are expected to introduce novel and enhanced physicochemical properties regarding storage and stability. However, these materials are still scarce and mostly grouped around magnesium- or aluminum-containing compounds. We present here a rapid and green mechanochemical solvent-free synthesis of two novel calcium-containing bimetallic amidoboranes, Li2Ca(NH2BH3)4 and Na2Ca(NH2BH3)4, from metal hydrides and ammonia borane. The insight into mechanochemical syntheses is provided by the in situ tandem synchrotron X-ray diffraction and thermal monitoring. The in situ data reveal how the choice of alkali metal hydride governs the course of reactions and their thermal profiles. In situ monitoring of thermal dehydrogenation of these materials is conducted by mass spectrometry and infrared spectroscopy, showing how the course of thermal decomposition varies depending on the structure of the amidoborane, resulting however in the same final products. These new hydrogen-rich bimetallic amidoboranes are structurally characterized by high-resolution powder X-ray diffraction, and they both show potential for hydrogen storage applications: high theoretical gravimetric capacities and low desorption temperatures of hydrogen without the significant presence of harmful gases. We also show how the choice of the milling reactor material can be decisive for the efficiency and overall success of the mechanochemical synthetic procedure, which may impact the design of milling syntheses for other thermally labile chemical systems. © 2021 American Chemical Society.",
journal = "ACS Sustainable Chemistry & Engineering",
title = "Mechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranes",
volume = "9",
number = "5",
pages = "2089-2099",
doi = "10.1021/acssuschemeng.0c06839"
}
Milanović, I., Biliškov, N., Užarević, K., Lukin, S., Etter, M.,& Halasz, I.. (2021). Mechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranes. in ACS Sustainable Chemistry & Engineering, 9(5), 2089-2099.
https://doi.org/10.1021/acssuschemeng.0c06839
Milanović I, Biliškov N, Užarević K, Lukin S, Etter M, Halasz I. Mechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranes. in ACS Sustainable Chemistry & Engineering. 2021;9(5):2089-2099.
doi:10.1021/acssuschemeng.0c06839 .
Milanović, Igor, Biliškov, Nikola, Užarević, Krunoslav, Lukin, Stipe, Etter, Martin, Halasz, Ivan, "Mechanochemical Synthesis and Thermal Dehydrogenation of Novel Calcium-Containing Bimetallic Amidoboranes" in ACS Sustainable Chemistry & Engineering, 9, no. 5 (2021):2089-2099,
https://doi.org/10.1021/acssuschemeng.0c06839 . .
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Predicting Feasible Modifications of Ce2ON2 Using a Combination of Global Optimization and Data Mining

Zagorac, Jelena B.; Schön, Johann Christian; Matović, Branko; Škundrić, Tamara; Zagorac, Dejan

(2020)

TY  - JOUR
AU  - Zagorac, Jelena B.
AU  - Schön, Johann Christian
AU  - Matović, Branko
AU  - Škundrić, Tamara
AU  - Zagorac, Dejan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9076
AB  - Using a combination of global optimization and data mining, we identify feasible modifications of an ionic Ce-O-N ceramic compound, with composition Ce2ON2, that should at least be metastable at T = 0 K. The energy landscape of Ce2ON2 has been explored for various pressures using empirical potentials followed by ab initio level optimizations, and a multitude of structure candidates has been analyzed. The structure of the energetically lowest modification among these candidates at standard pressure, α-Ce2ON2, is predicted to be similar to the AlCo2Pr2 structure type.
T2  - Journal of Phase Equilibria and Diffusion
T1  - Predicting Feasible Modifications of Ce2ON2 Using a Combination of Global Optimization and Data Mining
VL  - 41
IS  - 4
SP  - 538
EP  - 549
DO  - 10.1007/s11669-020-00823-3
ER  - 
@article{
author = "Zagorac, Jelena B. and Schön, Johann Christian and Matović, Branko and Škundrić, Tamara and Zagorac, Dejan",
year = "2020",
abstract = "Using a combination of global optimization and data mining, we identify feasible modifications of an ionic Ce-O-N ceramic compound, with composition Ce2ON2, that should at least be metastable at T = 0 K. The energy landscape of Ce2ON2 has been explored for various pressures using empirical potentials followed by ab initio level optimizations, and a multitude of structure candidates has been analyzed. The structure of the energetically lowest modification among these candidates at standard pressure, α-Ce2ON2, is predicted to be similar to the AlCo2Pr2 structure type.",
journal = "Journal of Phase Equilibria and Diffusion",
title = "Predicting Feasible Modifications of Ce2ON2 Using a Combination of Global Optimization and Data Mining",
volume = "41",
number = "4",
pages = "538-549",
doi = "10.1007/s11669-020-00823-3"
}
Zagorac, J. B., Schön, J. C., Matović, B., Škundrić, T.,& Zagorac, D.. (2020). Predicting Feasible Modifications of Ce2ON2 Using a Combination of Global Optimization and Data Mining. in Journal of Phase Equilibria and Diffusion, 41(4), 538-549.
https://doi.org/10.1007/s11669-020-00823-3
Zagorac JB, Schön JC, Matović B, Škundrić T, Zagorac D. Predicting Feasible Modifications of Ce2ON2 Using a Combination of Global Optimization and Data Mining. in Journal of Phase Equilibria and Diffusion. 2020;41(4):538-549.
doi:10.1007/s11669-020-00823-3 .
Zagorac, Jelena B., Schön, Johann Christian, Matović, Branko, Škundrić, Tamara, Zagorac, Dejan, "Predicting Feasible Modifications of Ce2ON2 Using a Combination of Global Optimization and Data Mining" in Journal of Phase Equilibria and Diffusion, 41, no. 4 (2020):538-549,
https://doi.org/10.1007/s11669-020-00823-3 . .
1
1
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Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste

Meseldžija, Slađana; Petrović, Jelena; Onjia, Antonije E.; Volkov-Husović, Tatjana; Nešić, Aleksandra; Vukelić, Nikola

(Srpsko hemijsko društvo, Beograd, 2020)

TY  - JOUR
AU  - Meseldžija, Slađana
AU  - Petrović, Jelena
AU  - Onjia, Antonije E.
AU  - Volkov-Husović, Tatjana
AU  - Nešić, Aleksandra
AU  - Vukelić, Nikola
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9734
AB  - This study is aimed to evaluate the possibility of lemon peel, as an agro-industrial waste, to remove Fe2+, Zn2+ and Mn2+ from single aqueous solutions and mining wastewater. For this purpose, the influence of various parameters: sorption time, initial pH solution, initial metal ion concentration and a dose of sorbent on the sorption process were studied in batch experiments. The experimental equilibrium data have been analysed utilizing linearized forms of Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms. The Langmuir isotherm provided the best theoretical correlation of the experimental equilibrium data for Fe2+, Zn2+ and Mn2+, with the maximum sorption capacities of 4.40, 5.03 and 4.52 mg g(-1), respectively. The percentage of targeted ions removal from single aqueous solutions was 92.9 % (Zn2+), 84.5 % (Fe2+) and 78.2 % (Mn2+). Regarding the sorption capability of lemon peel in mining wastewater, the maximum removal of Fe2+, Zn2+ and Mn2+ from mining wastewater was 49.62, 33.97 and 9.11 %, respectively. In addition, the potential reusability of the lemon peel as sorbent was investigated through desorption study in 0.1M of CH3COO4, HCl and HNO3 solution. The highest rate of desorption was achieved in 0.1 M HCl solution, reached a value of 55.19 % for Mn2+ and 37.24 % for Zn2+, while for Fe2+ the highest value of 25.82 % was achieved in 0.1M HNO3 solution.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste
VL  - 85
IS  - 10
SP  - 1371
EP  - 1382
DO  - 10.2298/JSC200413030M
ER  - 
@article{
author = "Meseldžija, Slađana and Petrović, Jelena and Onjia, Antonije E. and Volkov-Husović, Tatjana and Nešić, Aleksandra and Vukelić, Nikola",
year = "2020",
abstract = "This study is aimed to evaluate the possibility of lemon peel, as an agro-industrial waste, to remove Fe2+, Zn2+ and Mn2+ from single aqueous solutions and mining wastewater. For this purpose, the influence of various parameters: sorption time, initial pH solution, initial metal ion concentration and a dose of sorbent on the sorption process were studied in batch experiments. The experimental equilibrium data have been analysed utilizing linearized forms of Langmuir, Freundlich, Temkin and Dubinin-Radushkevich isotherms. The Langmuir isotherm provided the best theoretical correlation of the experimental equilibrium data for Fe2+, Zn2+ and Mn2+, with the maximum sorption capacities of 4.40, 5.03 and 4.52 mg g(-1), respectively. The percentage of targeted ions removal from single aqueous solutions was 92.9 % (Zn2+), 84.5 % (Fe2+) and 78.2 % (Mn2+). Regarding the sorption capability of lemon peel in mining wastewater, the maximum removal of Fe2+, Zn2+ and Mn2+ from mining wastewater was 49.62, 33.97 and 9.11 %, respectively. In addition, the potential reusability of the lemon peel as sorbent was investigated through desorption study in 0.1M of CH3COO4, HCl and HNO3 solution. The highest rate of desorption was achieved in 0.1 M HCl solution, reached a value of 55.19 % for Mn2+ and 37.24 % for Zn2+, while for Fe2+ the highest value of 25.82 % was achieved in 0.1M HNO3 solution.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste",
volume = "85",
number = "10",
pages = "1371-1382",
doi = "10.2298/JSC200413030M"
}
Meseldžija, S., Petrović, J., Onjia, A. E., Volkov-Husović, T., Nešić, A.,& Vukelić, N.. (2020). Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 85(10), 1371-1382.
https://doi.org/10.2298/JSC200413030M
Meseldžija S, Petrović J, Onjia AE, Volkov-Husović T, Nešić A, Vukelić N. Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste. in Journal of the Serbian Chemical Society. 2020;85(10):1371-1382.
doi:10.2298/JSC200413030M .
Meseldžija, Slađana, Petrović, Jelena, Onjia, Antonije E., Volkov-Husović, Tatjana, Nešić, Aleksandra, Vukelić, Nikola, "Removal of Fe2+, Zn2+ and Mn2+ from the mining wastewater by lemon peel waste" in Journal of the Serbian Chemical Society, 85, no. 10 (2020):1371-1382,
https://doi.org/10.2298/JSC200413030M . .

DFT study of boron doped MgH2: Bonding mechanism, hydrogen diffusion and desorption

Kurko, Sandra V.; Paskaš Mamula, Bojana; Rmuš, Jelena; Grbović-Novaković, Jasmina; Novaković, Nikola

(2020)

TY  - JOUR
AU  - Kurko, Sandra V.
AU  - Paskaš Mamula, Bojana
AU  - Rmuš, Jelena
AU  - Grbović-Novaković, Jasmina
AU  - Novaković, Nikola
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8560
AB  - The impact of boron doping on MgH2 bonding mechanism, hydrogen diffusion and desorption was calculated using density functional theory (DFT). Atomic interactions in doped and non-doped system and its influence on hydrogen and vacancy diffusion were studied in bulk hydride. Slab calculations were performed to study hydrogen desorption energies from (110) boron doped surface and its dependence on the surface configuration and depth position. To study kinetics of hydrogen diffusion in boron vicinity and hydrogen molecule desorption activation energies from boron doped and non-doped (110) MgH2 surface Nudged Elastic Band (NEB) method was used. Results showed that boron forms stronger, covalent bonds with hydrogen causing the destabilization in its first and second coordination. This leads to lower hydrogen desorption energies and improved hydrogen diffusion, while the impact on the energy barriers for H2 desorption from hydride (110) surface is less pronounced. © 2019 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - DFT study of boron doped MgH2: Bonding mechanism, hydrogen diffusion and desorption
VL  - 45
IS  - 14
SP  - 7947
EP  - 7957
DO  - 10.1016/j.ijhydene.2019.05.015
ER  - 
@article{
author = "Kurko, Sandra V. and Paskaš Mamula, Bojana and Rmuš, Jelena and Grbović-Novaković, Jasmina and Novaković, Nikola",
year = "2020",
abstract = "The impact of boron doping on MgH2 bonding mechanism, hydrogen diffusion and desorption was calculated using density functional theory (DFT). Atomic interactions in doped and non-doped system and its influence on hydrogen and vacancy diffusion were studied in bulk hydride. Slab calculations were performed to study hydrogen desorption energies from (110) boron doped surface and its dependence on the surface configuration and depth position. To study kinetics of hydrogen diffusion in boron vicinity and hydrogen molecule desorption activation energies from boron doped and non-doped (110) MgH2 surface Nudged Elastic Band (NEB) method was used. Results showed that boron forms stronger, covalent bonds with hydrogen causing the destabilization in its first and second coordination. This leads to lower hydrogen desorption energies and improved hydrogen diffusion, while the impact on the energy barriers for H2 desorption from hydride (110) surface is less pronounced. © 2019 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "DFT study of boron doped MgH2: Bonding mechanism, hydrogen diffusion and desorption",
volume = "45",
number = "14",
pages = "7947-7957",
doi = "10.1016/j.ijhydene.2019.05.015"
}
Kurko, S. V., Paskaš Mamula, B., Rmuš, J., Grbović-Novaković, J.,& Novaković, N.. (2020). DFT study of boron doped MgH2: Bonding mechanism, hydrogen diffusion and desorption. in International Journal of Hydrogen Energy, 45(14), 7947-7957.
https://doi.org/10.1016/j.ijhydene.2019.05.015
Kurko SV, Paskaš Mamula B, Rmuš J, Grbović-Novaković J, Novaković N. DFT study of boron doped MgH2: Bonding mechanism, hydrogen diffusion and desorption. in International Journal of Hydrogen Energy. 2020;45(14):7947-7957.
doi:10.1016/j.ijhydene.2019.05.015 .
Kurko, Sandra V., Paskaš Mamula, Bojana, Rmuš, Jelena, Grbović-Novaković, Jasmina, Novaković, Nikola, "DFT study of boron doped MgH2: Bonding mechanism, hydrogen diffusion and desorption" in International Journal of Hydrogen Energy, 45, no. 14 (2020):7947-7957,
https://doi.org/10.1016/j.ijhydene.2019.05.015 . .
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The influence of mechanical milling parameters on hydrogen desorption from Mgh2-Wo3 composites

Pantić, Tijana; Milanović, Igor; Lukić, Miodrag; Grbović-Novaković, Jasmina; Kurko, Sandra V.; Biliškov, Nikola; Milošević Govedarović, Sanja S.

(2020)

TY  - JOUR
AU  - Pantić, Tijana
AU  - Milanović, Igor
AU  - Lukić, Miodrag
AU  - Grbović-Novaković, Jasmina
AU  - Kurko, Sandra V.
AU  - Biliškov, Nikola
AU  - Milošević Govedarović, Sanja S.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8568
AB  - The influence of different milling conditions obtained using two high-energy mills on hydrogen desorption from MgH2-WO3 composites was investigated. The morphology, particle and crystallite size were studied as a function of milling speed, vial's volume, and ball-to-powder ratio. The vial's fill level, the number, and type of milling balls and additive's content kept constant. Changes in morphology and microstructure were correlated to desorption properties of materials. Higher milling speed reduced particle size but, there is no significant crystallite size reduction. On the other hand, additive distribution is similar regardless of the energy input. It has been noticed that different energy input on milling blend, which is the result of combined effects of above-mentioned factors, reflects on desorption temperature but not on the kinetics of desorption. In fact, desorption mechanism changes from 2D to 3D growth with constant nucleation rate, despite obtained changes in microstructure or chemical composition of the material. © 2019 Hydrogen Energy Publications LLC
T2  - International Journal of Hydrogen Energy
T1  - The influence of mechanical milling parameters on hydrogen desorption from Mgh2-Wo3 composites
VL  - 45
IS  - 14
SP  - 7901
EP  - 7911
DO  - 10.1016/j.ijhydene.2019.07.167
ER  - 
@article{
author = "Pantić, Tijana and Milanović, Igor and Lukić, Miodrag and Grbović-Novaković, Jasmina and Kurko, Sandra V. and Biliškov, Nikola and Milošević Govedarović, Sanja S.",
year = "2020",
abstract = "The influence of different milling conditions obtained using two high-energy mills on hydrogen desorption from MgH2-WO3 composites was investigated. The morphology, particle and crystallite size were studied as a function of milling speed, vial's volume, and ball-to-powder ratio. The vial's fill level, the number, and type of milling balls and additive's content kept constant. Changes in morphology and microstructure were correlated to desorption properties of materials. Higher milling speed reduced particle size but, there is no significant crystallite size reduction. On the other hand, additive distribution is similar regardless of the energy input. It has been noticed that different energy input on milling blend, which is the result of combined effects of above-mentioned factors, reflects on desorption temperature but not on the kinetics of desorption. In fact, desorption mechanism changes from 2D to 3D growth with constant nucleation rate, despite obtained changes in microstructure or chemical composition of the material. © 2019 Hydrogen Energy Publications LLC",
journal = "International Journal of Hydrogen Energy",
title = "The influence of mechanical milling parameters on hydrogen desorption from Mgh2-Wo3 composites",
volume = "45",
number = "14",
pages = "7901-7911",
doi = "10.1016/j.ijhydene.2019.07.167"
}
Pantić, T., Milanović, I., Lukić, M., Grbović-Novaković, J., Kurko, S. V., Biliškov, N.,& Milošević Govedarović, S. S.. (2020). The influence of mechanical milling parameters on hydrogen desorption from Mgh2-Wo3 composites. in International Journal of Hydrogen Energy, 45(14), 7901-7911.
https://doi.org/10.1016/j.ijhydene.2019.07.167
Pantić T, Milanović I, Lukić M, Grbović-Novaković J, Kurko SV, Biliškov N, Milošević Govedarović SS. The influence of mechanical milling parameters on hydrogen desorption from Mgh2-Wo3 composites. in International Journal of Hydrogen Energy. 2020;45(14):7901-7911.
doi:10.1016/j.ijhydene.2019.07.167 .
Pantić, Tijana, Milanović, Igor, Lukić, Miodrag, Grbović-Novaković, Jasmina, Kurko, Sandra V., Biliškov, Nikola, Milošević Govedarović, Sanja S., "The influence of mechanical milling parameters on hydrogen desorption from Mgh2-Wo3 composites" in International Journal of Hydrogen Energy, 45, no. 14 (2020):7901-7911,
https://doi.org/10.1016/j.ijhydene.2019.07.167 . .
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A new theoretical model for hexagonal ice, Ih(d), from first principles investigations

Jovanović, Dušica; Zagorac, Dejan; Schön, Johann Christian; Milovanović, Branislav; Zagorac, Jelena B.

(2020)

TY  - JOUR
AU  - Jovanović, Dušica
AU  - Zagorac, Dejan
AU  - Schön, Johann Christian
AU  - Milovanović, Branislav
AU  - Zagorac, Jelena B.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8674
AB  - Due to their great importance in science, technology, and the life sciences, water and ice have been extensively investigated over many years. In particular, hexagonal ice Ih has been of great interest since it is the most common form of ice, and several modifications, Ih(a), Ih(b) and Ih(c) are known, whose structural details are still under discussion. In this study, we present an alternative theoretical model, called Ih(d), for the hexagonal ice modification in space group P 6 3 / mmc (no. 194), based on first-principles calculations that have been performed using DFT-LDA, GGA-PBE, and hybrid B3LYP and PBE0 functionals.
T2  - Zeitschrift für Naturforschung B
T1  - A new theoretical model for hexagonal ice, Ih(d), from first principles investigations
VL  - 75
IS  - 1-2
SP  - 125
EP  - 128
DO  - 10.1515/znb-2019-0164
ER  - 
@article{
author = "Jovanović, Dušica and Zagorac, Dejan and Schön, Johann Christian and Milovanović, Branislav and Zagorac, Jelena B.",
year = "2020",
abstract = "Due to their great importance in science, technology, and the life sciences, water and ice have been extensively investigated over many years. In particular, hexagonal ice Ih has been of great interest since it is the most common form of ice, and several modifications, Ih(a), Ih(b) and Ih(c) are known, whose structural details are still under discussion. In this study, we present an alternative theoretical model, called Ih(d), for the hexagonal ice modification in space group P 6 3 / mmc (no. 194), based on first-principles calculations that have been performed using DFT-LDA, GGA-PBE, and hybrid B3LYP and PBE0 functionals.",
journal = "Zeitschrift für Naturforschung B",
title = "A new theoretical model for hexagonal ice, Ih(d), from first principles investigations",
volume = "75",
number = "1-2",
pages = "125-128",
doi = "10.1515/znb-2019-0164"
}
Jovanović, D., Zagorac, D., Schön, J. C., Milovanović, B.,& Zagorac, J. B.. (2020). A new theoretical model for hexagonal ice, Ih(d), from first principles investigations. in Zeitschrift für Naturforschung B, 75(1-2), 125-128.
https://doi.org/10.1515/znb-2019-0164
Jovanović D, Zagorac D, Schön JC, Milovanović B, Zagorac JB. A new theoretical model for hexagonal ice, Ih(d), from first principles investigations. in Zeitschrift für Naturforschung B. 2020;75(1-2):125-128.
doi:10.1515/znb-2019-0164 .
Jovanović, Dušica, Zagorac, Dejan, Schön, Johann Christian, Milovanović, Branislav, Zagorac, Jelena B., "A new theoretical model for hexagonal ice, Ih(d), from first principles investigations" in Zeitschrift für Naturforschung B, 75, no. 1-2 (2020):125-128,
https://doi.org/10.1515/znb-2019-0164 . .
1
1

Energy Landscapes 2019

Zagorac, Dejan; Wales, David J.; Schön, Johann Christian; Prasad, Dasari L. V. K.

(2020)

TY  - JOUR
AU  - Zagorac, Dejan
AU  - Wales, David J.
AU  - Schön, Johann Christian
AU  - Prasad, Dasari L. V. K.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9927
AB  - This article summarizes the presentations delivered at the Energy Landscapes Conference held in Belgrade, Serbia, from 26 to 30 August 2019. The focus of the conference was on the present state of the art in theoretical energy landscape approaches, and their applications in the fields of chemistry, physics, biology, and materials science in general. The presentations were organized around some of the hot topics, such as applications from spectroscopy to the solid-state, folding and misfolding of proteins, DNA and RNA, multiscale modeling, materials under extreme pressure/temperature conditions, designing landscapes for self-assembly and multifunctional systems, landscapes for machine learning, atomic, molecular, colloidal and nanoalloy clusters.
T2  - Journal of Innovative Materials in Extreme Conditions
T1  - Energy Landscapes 2019
VL  - 1
IS  - 1
SP  - 2
EP  - 6
ER  - 
@article{
author = "Zagorac, Dejan and Wales, David J. and Schön, Johann Christian and Prasad, Dasari L. V. K.",
year = "2020",
abstract = "This article summarizes the presentations delivered at the Energy Landscapes Conference held in Belgrade, Serbia, from 26 to 30 August 2019. The focus of the conference was on the present state of the art in theoretical energy landscape approaches, and their applications in the fields of chemistry, physics, biology, and materials science in general. The presentations were organized around some of the hot topics, such as applications from spectroscopy to the solid-state, folding and misfolding of proteins, DNA and RNA, multiscale modeling, materials under extreme pressure/temperature conditions, designing landscapes for self-assembly and multifunctional systems, landscapes for machine learning, atomic, molecular, colloidal and nanoalloy clusters.",
journal = "Journal of Innovative Materials in Extreme Conditions",
title = "Energy Landscapes 2019",
volume = "1",
number = "1",
pages = "2-6"
}
Zagorac, D., Wales, D. J., Schön, J. C.,& Prasad, D. L. V. K.. (2020). Energy Landscapes 2019. in Journal of Innovative Materials in Extreme Conditions, 1(1), 2-6.
Zagorac D, Wales DJ, Schön JC, Prasad DLVK. Energy Landscapes 2019. in Journal of Innovative Materials in Extreme Conditions. 2020;1(1):2-6..
Zagorac, Dejan, Wales, David J., Schön, Johann Christian, Prasad, Dasari L. V. K., "Energy Landscapes 2019" in Journal of Innovative Materials in Extreme Conditions, 1, no. 1 (2020):2-6.

Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures

Stanković, Nadežda; Nikolić, Marko; Jelenković, Branislav; Daneu, Nina; Maletaškić, Jelena; Prekajski-Đorđević, Marija D.; Matović, Branko

(2020)

TY  - JOUR
AU  - Stanković, Nadežda
AU  - Nikolić, Marko
AU  - Jelenković, Branislav
AU  - Daneu, Nina
AU  - Maletaškić, Jelena
AU  - Prekajski-Đorđević, Marija D.
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9009
AB  - In the last decade, an immense progress has been made in white LEDs, mainly due to the development of red-emitting phosphors. In this paper, we report on the synthesis of Eu3+ activated Y2MoO6 by a self-initiated and self-sustained method. The obtained powder was calcined at various temperatures in the 600–1400 °C range and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The results revealed that all powders are single phase Y2MoO6:Eu3+, with particle size in the nanorange at lower treatment temperatures (600 and 800 °C) and in the microrange at higher calcination temperatures (1000–1400 °C). The obtained powders are promising materials for white light-emitting diodes as they can efficiently absorb energy in 324–425 nm region (near-UV to blue light region) and emit at 611 nm in the red region of the spectrum, while exhibiting high thermal and chemical stability.
T2  - Processing and Application of Ceramics
T1  - Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures
VL  - 14
IS  - 1
SP  - 71
EP  - 76
DO  - 10.2298/PAC2001071S
ER  - 
@article{
author = "Stanković, Nadežda and Nikolić, Marko and Jelenković, Branislav and Daneu, Nina and Maletaškić, Jelena and Prekajski-Đorđević, Marija D. and Matović, Branko",
year = "2020",
abstract = "In the last decade, an immense progress has been made in white LEDs, mainly due to the development of red-emitting phosphors. In this paper, we report on the synthesis of Eu3+ activated Y2MoO6 by a self-initiated and self-sustained method. The obtained powder was calcined at various temperatures in the 600–1400 °C range and examined by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and photoluminescence spectroscopy (PL). The results revealed that all powders are single phase Y2MoO6:Eu3+, with particle size in the nanorange at lower treatment temperatures (600 and 800 °C) and in the microrange at higher calcination temperatures (1000–1400 °C). The obtained powders are promising materials for white light-emitting diodes as they can efficiently absorb energy in 324–425 nm region (near-UV to blue light region) and emit at 611 nm in the red region of the spectrum, while exhibiting high thermal and chemical stability.",
journal = "Processing and Application of Ceramics",
title = "Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures",
volume = "14",
number = "1",
pages = "71-76",
doi = "10.2298/PAC2001071S"
}
Stanković, N., Nikolić, M., Jelenković, B., Daneu, N., Maletaškić, J., Prekajski-Đorđević, M. D.,& Matović, B.. (2020). Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures. in Processing and Application of Ceramics, 14(1), 71-76.
https://doi.org/10.2298/PAC2001071S
Stanković N, Nikolić M, Jelenković B, Daneu N, Maletaškić J, Prekajski-Đorđević MD, Matović B. Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures. in Processing and Application of Ceramics. 2020;14(1):71-76.
doi:10.2298/PAC2001071S .
Stanković, Nadežda, Nikolić, Marko, Jelenković, Branislav, Daneu, Nina, Maletaškić, Jelena, Prekajski-Đorđević, Marija D., Matović, Branko, "Luminescence properties of Eu3+ activated Y2MoO6 powders calcined at different temperatures" in Processing and Application of Ceramics, 14, no. 1 (2020):71-76,
https://doi.org/10.2298/PAC2001071S . .
1
1
1

Crystalline WO3 nanoparticles for No2 sensing

Matović, Branko; Luković, Jelena M.; Zagorac, Dejan; Ivanova, Olga S.; Baranchikov, Alexander E.; Shekunova, Taisiya O.; Yorov, Khursand E.; Gajtko, Olga M.; Yang, Lili; Rumyantseva, Marina N.; Ivanov, Vladimir K.

(2020)

TY  - JOUR
AU  - Matović, Branko
AU  - Luković, Jelena M.
AU  - Zagorac, Dejan
AU  - Ivanova, Olga S.
AU  - Baranchikov, Alexander E.
AU  - Shekunova, Taisiya O.
AU  - Yorov, Khursand E.
AU  - Gajtko, Olga M.
AU  - Yang, Lili
AU  - Rumyantseva, Marina N.
AU  - Ivanov, Vladimir K.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9794
AB  - This study shows excellent NO2-sensing properties of tungsten oxide nanoparticles, prepared using a facile procedure which includes dissolution of metallic tungsten in hydrogen peroxide with subsequent low-temperature (400 °C) heating. We also conducted a thorough literature survey on sensor properties of tungsten oxide prepared by various means and found that the sensor response towards NO2 registered in this work achieved the highest level. The most intriguing feature of the material obtained was a highly reproducible sensor signal at room temperature which was more than 100 times higher than any reported previously for WO3. The probable reason for such high sensor response was the presence of two WO3 polymorphs (-WO3 and h-WO3) in the material synthesized using a peroxide-assisted route. In order to further investigate synthesizedWO3 materials, sophisticated experimental (XRD, SEM, TEM, BET) and theoretical (B3LYP, HSE) methods have been used, as well as resistance and sensor response measurements at various temperatures.
T2  - Processing and Application of Ceramics
T1  - Crystalline WO3 nanoparticles for No2 sensing
VL  - 14
IS  - 4
SP  - 282
EP  - 292
DO  - 10.2298/PAC2004282M
ER  - 
@article{
author = "Matović, Branko and Luković, Jelena M. and Zagorac, Dejan and Ivanova, Olga S. and Baranchikov, Alexander E. and Shekunova, Taisiya O. and Yorov, Khursand E. and Gajtko, Olga M. and Yang, Lili and Rumyantseva, Marina N. and Ivanov, Vladimir K.",
year = "2020",
abstract = "This study shows excellent NO2-sensing properties of tungsten oxide nanoparticles, prepared using a facile procedure which includes dissolution of metallic tungsten in hydrogen peroxide with subsequent low-temperature (400 °C) heating. We also conducted a thorough literature survey on sensor properties of tungsten oxide prepared by various means and found that the sensor response towards NO2 registered in this work achieved the highest level. The most intriguing feature of the material obtained was a highly reproducible sensor signal at room temperature which was more than 100 times higher than any reported previously for WO3. The probable reason for such high sensor response was the presence of two WO3 polymorphs (-WO3 and h-WO3) in the material synthesized using a peroxide-assisted route. In order to further investigate synthesizedWO3 materials, sophisticated experimental (XRD, SEM, TEM, BET) and theoretical (B3LYP, HSE) methods have been used, as well as resistance and sensor response measurements at various temperatures.",
journal = "Processing and Application of Ceramics",
title = "Crystalline WO3 nanoparticles for No2 sensing",
volume = "14",
number = "4",
pages = "282-292",
doi = "10.2298/PAC2004282M"
}
Matović, B., Luković, J. M., Zagorac, D., Ivanova, O. S., Baranchikov, A. E., Shekunova, T. O., Yorov, K. E., Gajtko, O. M., Yang, L., Rumyantseva, M. N.,& Ivanov, V. K.. (2020). Crystalline WO3 nanoparticles for No2 sensing. in Processing and Application of Ceramics, 14(4), 282-292.
https://doi.org/10.2298/PAC2004282M
Matović B, Luković JM, Zagorac D, Ivanova OS, Baranchikov AE, Shekunova TO, Yorov KE, Gajtko OM, Yang L, Rumyantseva MN, Ivanov VK. Crystalline WO3 nanoparticles for No2 sensing. in Processing and Application of Ceramics. 2020;14(4):282-292.
doi:10.2298/PAC2004282M .
Matović, Branko, Luković, Jelena M., Zagorac, Dejan, Ivanova, Olga S., Baranchikov, Alexander E., Shekunova, Taisiya O., Yorov, Khursand E., Gajtko, Olga M., Yang, Lili, Rumyantseva, Marina N., Ivanov, Vladimir K., "Crystalline WO3 nanoparticles for No2 sensing" in Processing and Application of Ceramics, 14, no. 4 (2020):282-292,
https://doi.org/10.2298/PAC2004282M . .
1
1

Synthesis, densification and characterization of Ag doped ceria nanopowders

Matović, Branko; Butulija, Svetlana; Dohčević-Mitrović, Zorana; Minović-Arsić, Tamara; Luković, Jelena M.; Bošković, Snežana B.; Maletaškić, Jelena

(2020)

TY  - JOUR
AU  - Matović, Branko
AU  - Butulija, Svetlana
AU  - Dohčević-Mitrović, Zorana
AU  - Minović-Arsić, Tamara
AU  - Luković, Jelena M.
AU  - Bošković, Snežana B.
AU  - Maletaškić, Jelena
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8572
AB  - Nanosized Ag-doped ceria (Ce1-xAlxO2-δ)powders (0.1 ≤ x ≤ 0.04) were obtained by self-propagating room temperature reaction. The solid solubility of Ag into ceria lattice was the highest reported so far. X-ray diffraction analysis and field emission scanning microscopy results showed that the doped samples are single phase solid solutions with fluorite-type structure and all prepared powders were nanometric in size. The average size of Ce1-xAgxO2-▯ particles lies at about 4 nm. Raman spectra revealed an increase in the amount of oxygen vacancies with the increase of Ag concentration, such as is foreseen. The thermal stability of solid solution was followed by XRD. Microstructure development was studied by scanning electron microscopy. By controlling the processing variables, it was possible to obtain high density samples with homogeneous microstructure at low sintering temperature. © 2020 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Synthesis, densification and characterization of Ag doped ceria nanopowders
VL  - 40
IS  - 5
SP  - 1983
EP  - 1988
DO  - 10.1016/j.jeurceramsoc.2020.01.013
ER  - 
@article{
author = "Matović, Branko and Butulija, Svetlana and Dohčević-Mitrović, Zorana and Minović-Arsić, Tamara and Luković, Jelena M. and Bošković, Snežana B. and Maletaškić, Jelena",
year = "2020",
abstract = "Nanosized Ag-doped ceria (Ce1-xAlxO2-δ)powders (0.1 ≤ x ≤ 0.04) were obtained by self-propagating room temperature reaction. The solid solubility of Ag into ceria lattice was the highest reported so far. X-ray diffraction analysis and field emission scanning microscopy results showed that the doped samples are single phase solid solutions with fluorite-type structure and all prepared powders were nanometric in size. The average size of Ce1-xAgxO2-▯ particles lies at about 4 nm. Raman spectra revealed an increase in the amount of oxygen vacancies with the increase of Ag concentration, such as is foreseen. The thermal stability of solid solution was followed by XRD. Microstructure development was studied by scanning electron microscopy. By controlling the processing variables, it was possible to obtain high density samples with homogeneous microstructure at low sintering temperature. © 2020 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Synthesis, densification and characterization of Ag doped ceria nanopowders",
volume = "40",
number = "5",
pages = "1983-1988",
doi = "10.1016/j.jeurceramsoc.2020.01.013"
}
Matović, B., Butulija, S., Dohčević-Mitrović, Z., Minović-Arsić, T., Luković, J. M., Bošković, S. B.,& Maletaškić, J.. (2020). Synthesis, densification and characterization of Ag doped ceria nanopowders. in Journal of the European Ceramic Society, 40(5), 1983-1988.
https://doi.org/10.1016/j.jeurceramsoc.2020.01.013
Matović B, Butulija S, Dohčević-Mitrović Z, Minović-Arsić T, Luković JM, Bošković SB, Maletaškić J. Synthesis, densification and characterization of Ag doped ceria nanopowders. in Journal of the European Ceramic Society. 2020;40(5):1983-1988.
doi:10.1016/j.jeurceramsoc.2020.01.013 .
Matović, Branko, Butulija, Svetlana, Dohčević-Mitrović, Zorana, Minović-Arsić, Tamara, Luković, Jelena M., Bošković, Snežana B., Maletaškić, Jelena, "Synthesis, densification and characterization of Ag doped ceria nanopowders" in Journal of the European Ceramic Society, 40, no. 5 (2020):1983-1988,
https://doi.org/10.1016/j.jeurceramsoc.2020.01.013 . .
4
4
4

Phase and microstructural study of urinary stones

Mirković, Miljana M.; Došen, Anja; Erić, Suzana; Vulić, Predrag; Matović, Branko; Rosić, Aleksandra

(2020)

TY  - JOUR
AU  - Mirković, Miljana M.
AU  - Došen, Anja
AU  - Erić, Suzana
AU  - Vulić, Predrag
AU  - Matović, Branko
AU  - Rosić, Aleksandra
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8663
AB  - In this paper we present the phase and morphological characteristics of urinary stones from Serbian patients. The study included for the first time the determination of the phase composition and a statistical analysis of the presence of different types of urinary stones in both men and women in Serbia. The main goal of study was representation of collected data for the first time. For past three years, more than 600 samples were collected from Serbian patients. The phase composition of all samples of urinary stones was investigated using XRD analysis. Morphology and chemical composition of phases in some characteristic samples was determinate by the SEM-EDS analysis. Results indicate that there are several different types of urinary stones that vary in mineral composition, chemistry and morphology. It was found that 312 (52%) of the 600 stones were composed of calcium oxalate minerals (CaOx): 17.3% of which were pure calcium oxalate monohydrate COM, 4% were pure calcium oxalate dihydrate COD; 200 (33.3%) were a mixture of CaOx and Hydroxyapatite HA, 19 (3.1%) were uric acid (uricite) UA and uric acid dihydrate UAD, 17 (2.8%) were a combination of UA and CaOx minerals, 41 (6.8%) were combination of CaP minerals and CaOx, 11 (1.9%) were cystine (Cy) stones. The obtained data shows the diversity of types of urinary stones. Morphological, chemical and XRPD analysis give us statistical data which shows that the most common urinary stones from Serbian patients are from CaOx group and in most of cases are associated with CaP. © 2019 Elsevier B.V.
T2  - Microchemical Journal
T1  - Phase and microstructural study of urinary stones
VL  - 152
SP  - 104429
DO  - 10.1016/j.microc.2019.104429
ER  - 
@article{
author = "Mirković, Miljana M. and Došen, Anja and Erić, Suzana and Vulić, Predrag and Matović, Branko and Rosić, Aleksandra",
year = "2020",
abstract = "In this paper we present the phase and morphological characteristics of urinary stones from Serbian patients. The study included for the first time the determination of the phase composition and a statistical analysis of the presence of different types of urinary stones in both men and women in Serbia. The main goal of study was representation of collected data for the first time. For past three years, more than 600 samples were collected from Serbian patients. The phase composition of all samples of urinary stones was investigated using XRD analysis. Morphology and chemical composition of phases in some characteristic samples was determinate by the SEM-EDS analysis. Results indicate that there are several different types of urinary stones that vary in mineral composition, chemistry and morphology. It was found that 312 (52%) of the 600 stones were composed of calcium oxalate minerals (CaOx): 17.3% of which were pure calcium oxalate monohydrate COM, 4% were pure calcium oxalate dihydrate COD; 200 (33.3%) were a mixture of CaOx and Hydroxyapatite HA, 19 (3.1%) were uric acid (uricite) UA and uric acid dihydrate UAD, 17 (2.8%) were a combination of UA and CaOx minerals, 41 (6.8%) were combination of CaP minerals and CaOx, 11 (1.9%) were cystine (Cy) stones. The obtained data shows the diversity of types of urinary stones. Morphological, chemical and XRPD analysis give us statistical data which shows that the most common urinary stones from Serbian patients are from CaOx group and in most of cases are associated with CaP. © 2019 Elsevier B.V.",
journal = "Microchemical Journal",
title = "Phase and microstructural study of urinary stones",
volume = "152",
pages = "104429",
doi = "10.1016/j.microc.2019.104429"
}
Mirković, M. M., Došen, A., Erić, S., Vulić, P., Matović, B.,& Rosić, A.. (2020). Phase and microstructural study of urinary stones. in Microchemical Journal, 152, 104429.
https://doi.org/10.1016/j.microc.2019.104429
Mirković MM, Došen A, Erić S, Vulić P, Matović B, Rosić A. Phase and microstructural study of urinary stones. in Microchemical Journal. 2020;152:104429.
doi:10.1016/j.microc.2019.104429 .
Mirković, Miljana M., Došen, Anja, Erić, Suzana, Vulić, Predrag, Matović, Branko, Rosić, Aleksandra, "Phase and microstructural study of urinary stones" in Microchemical Journal, 152 (2020):104429,
https://doi.org/10.1016/j.microc.2019.104429 . .
1
3
3
3

Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics

Matović, Branko; Maletaškić, Jelena; Zagorac, Jelena B.; Pavkov, Vladimir; Maki, Ryosuke S.S.; Yoshida, Katsumi; Yano, Toyohiko

(2020)

TY  - JOUR
AU  - Matović, Branko
AU  - Maletaškić, Jelena
AU  - Zagorac, Jelena B.
AU  - Pavkov, Vladimir
AU  - Maki, Ryosuke S.S.
AU  - Yoshida, Katsumi
AU  - Yano, Toyohiko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8668
AB  - Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd
T2  - Journal of the European Ceramic Society
T1  - Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics
VL  - 40
IS  - 7
SP  - 2652
EP  - 2657
DO  - 10.1016/j.jeurceramsoc.2019.11.012
ER  - 
@article{
author = "Matović, Branko and Maletaškić, Jelena and Zagorac, Jelena B. and Pavkov, Vladimir and Maki, Ryosuke S.S. and Yoshida, Katsumi and Yano, Toyohiko",
year = "2020",
abstract = "Three different lanthanide zirconate powders: Pr2Zr2O7, Sm2Zr2O7 and PrSmZr2O7 were prepared by combustion synthesis. The synthesis initially yielded amorphous powders, which crystallized after subsequent thermal treatment. Well-crystallized compounds were formed after calcination at temperature as low as 950 °C. Effect of the thermal treatment on the phase evolution was studied by X-ray powder diffraction (XRD). The powders calcined at the highest temperature (1550 °C) showed that all compositions possess the pyrochlore structure with the space group No. 227. The obtained powders were compacted and pressureless sintered without additive at 1600 °C for 4 h in the air. Microstructure development was examined by field emission scanning electron microscopy, as well as by transmission electron microscopy. It was found that the lowest value for thermal conductivity, 1.2 W/m K, was obtained for mixed lanthanide composition with pyrochlore structure (PrSmZr2O7). The effect of chemical composition on micro-hardness and thermal conductivity of the obtained zirconates was studied. © 2019 Elsevier Ltd",
journal = "Journal of the European Ceramic Society",
title = "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics",
volume = "40",
number = "7",
pages = "2652-2657",
doi = "10.1016/j.jeurceramsoc.2019.11.012"
}
Matović, B., Maletaškić, J., Zagorac, J. B., Pavkov, V., Maki, R. S.S., Yoshida, K.,& Yano, T.. (2020). Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society, 40(7), 2652-2657.
https://doi.org/10.1016/j.jeurceramsoc.2019.11.012
Matović B, Maletaškić J, Zagorac JB, Pavkov V, Maki RS, Yoshida K, Yano T. Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics. in Journal of the European Ceramic Society. 2020;40(7):2652-2657.
doi:10.1016/j.jeurceramsoc.2019.11.012 .
Matović, Branko, Maletaškić, Jelena, Zagorac, Jelena B., Pavkov, Vladimir, Maki, Ryosuke S.S., Yoshida, Katsumi, Yano, Toyohiko, "Synthesis and characterization of pyrochlore lanthanide (Pr, Sm) zirconate ceramics" in Journal of the European Ceramic Society, 40, no. 7 (2020):2652-2657,
https://doi.org/10.1016/j.jeurceramsoc.2019.11.012 . .
4
1
1

Structural and morphological characterization of iron-doped sol-gel derived mullite powders

Ilić, Svetlana M.; Babić, Biljana M.; Bjelajac, Anđelika; Stoimenov, Nikolay; Kljajević, Ljiljana M.; Pošarac-Marković, Milica B.; Matović, Branko

(2020)

TY  - JOUR
AU  - Ilić, Svetlana M.
AU  - Babić, Biljana M.
AU  - Bjelajac, Anđelika
AU  - Stoimenov, Nikolay
AU  - Kljajević, Ljiljana M.
AU  - Pošarac-Marković, Milica B.
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8823
AB  - The structural and morphological properties of iron-doped mullite powders are the subject of the present study. The powders of undoped and iron-doped mullite in the composition range of 3–15 wt% Fe2O3 were synthesized by a combination of sol-gel and combustion methods. The excess of water and urea were introduced in reaction solutions to enhance the copolymerization of aluminum and silicon species. The results of structural characterization revealed that the synthesized mullite powders were amorphous of a hybrid type. The specific surface area of the undoped mullite powder was 262 m2 g-1 with a maximum pore radius (dp) of 2 nm classifying it into mesoporous materials. The addition of iron has reduced the specific surface area, while the pore size value remained the same except for the sample with 3 wt% Fe2O3 (SBET = 278 m2 g-1; dp = 3 nm). The presence of iron caused lowering the temperature of liquid phase formation, while present urea combusted providing the increase of the temperature locally that caused the sintering and formation of agglomerates of smaller particles. However, the results of the particle size analysis are not straightforward. The values of mean volume diameter (D[3,4]) indicated that the particle size increased to 6 wt% Fe2O3 (123.6 μm), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 μm. Thus, the added iron contributed to the more uniform particle size distribution. The SEM analysis has also shown the coarse powder particles consisted of the coalesced smaller particles. © 2020 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Structural and morphological characterization of iron-doped sol-gel derived mullite powders
VL  - 46
IS  - 9
SP  - 13107
EP  - 13113
DO  - 10.1016/j.ceramint.2020.02.083
ER  - 
@article{
author = "Ilić, Svetlana M. and Babić, Biljana M. and Bjelajac, Anđelika and Stoimenov, Nikolay and Kljajević, Ljiljana M. and Pošarac-Marković, Milica B. and Matović, Branko",
year = "2020",
abstract = "The structural and morphological properties of iron-doped mullite powders are the subject of the present study. The powders of undoped and iron-doped mullite in the composition range of 3–15 wt% Fe2O3 were synthesized by a combination of sol-gel and combustion methods. The excess of water and urea were introduced in reaction solutions to enhance the copolymerization of aluminum and silicon species. The results of structural characterization revealed that the synthesized mullite powders were amorphous of a hybrid type. The specific surface area of the undoped mullite powder was 262 m2 g-1 with a maximum pore radius (dp) of 2 nm classifying it into mesoporous materials. The addition of iron has reduced the specific surface area, while the pore size value remained the same except for the sample with 3 wt% Fe2O3 (SBET = 278 m2 g-1; dp = 3 nm). The presence of iron caused lowering the temperature of liquid phase formation, while present urea combusted providing the increase of the temperature locally that caused the sintering and formation of agglomerates of smaller particles. However, the results of the particle size analysis are not straightforward. The values of mean volume diameter (D[3,4]) indicated that the particle size increased to 6 wt% Fe2O3 (123.6 μm), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 μm. Thus, the added iron contributed to the more uniform particle size distribution. The SEM analysis has also shown the coarse powder particles consisted of the coalesced smaller particles. © 2020 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Structural and morphological characterization of iron-doped sol-gel derived mullite powders",
volume = "46",
number = "9",
pages = "13107-13113",
doi = "10.1016/j.ceramint.2020.02.083"
}
Ilić, S. M., Babić, B. M., Bjelajac, A., Stoimenov, N., Kljajević, L. M., Pošarac-Marković, M. B.,& Matović, B.. (2020). Structural and morphological characterization of iron-doped sol-gel derived mullite powders. in Ceramics International, 46(9), 13107-13113.
https://doi.org/10.1016/j.ceramint.2020.02.083
Ilić SM, Babić BM, Bjelajac A, Stoimenov N, Kljajević LM, Pošarac-Marković MB, Matović B. Structural and morphological characterization of iron-doped sol-gel derived mullite powders. in Ceramics International. 2020;46(9):13107-13113.
doi:10.1016/j.ceramint.2020.02.083 .
Ilić, Svetlana M., Babić, Biljana M., Bjelajac, Anđelika, Stoimenov, Nikolay, Kljajević, Ljiljana M., Pošarac-Marković, Milica B., Matović, Branko, "Structural and morphological characterization of iron-doped sol-gel derived mullite powders" in Ceramics International, 46, no. 9 (2020):13107-13113,
https://doi.org/10.1016/j.ceramint.2020.02.083 . .
5
3
3

Structure prediction, high pressure effect and properties investigation of superhard B6O

Zagorac, Jelena B.; Jovanović, Dušica; Volkov-Husović, Tatjana; Matović, Branko; Zagorac, Dejan

(2020)

TY  - JOUR
AU  - Zagorac, Jelena B.
AU  - Jovanović, Dušica
AU  - Volkov-Husović, Tatjana
AU  - Matović, Branko
AU  - Zagorac, Dejan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8932
AB  - Ab initio data mining approach has been used in order to investigate B6O system and discover new possible modifications, besides experimentally known R-3m (α-B6O) structure and theoretically predicted Cmcm (β-B6O) structure. DFT calculations were performed by two different functionals, LDA and PBE. In this work, we focus on the structure, mechanical, and electronic properties of the experimentally known α-B6O structure and newly predicted modifications with the B6O stoichiometry. Moreover, mechanical properties including elastic constants, bulk, shear and elastic moduli, Poisson's ratio, Pugh's criterion, and hardness are given for the investigated modifications of B6O. In particular, we have investigated the influence of the high pressure on the electronic and mechanical properties. Results of our study provide more insight in the B6O superhard material and open new possibilities for various device applications.
T2  - Modelling and Simulation in Materials Science and Engineering
T1  - Structure prediction, high pressure effect and properties investigation of superhard B6O
VL  - 28
IS  - 3
DO  - 10.1088/1361-651X/ab6ec8
ER  - 
@article{
author = "Zagorac, Jelena B. and Jovanović, Dušica and Volkov-Husović, Tatjana and Matović, Branko and Zagorac, Dejan",
year = "2020",
abstract = "Ab initio data mining approach has been used in order to investigate B6O system and discover new possible modifications, besides experimentally known R-3m (α-B6O) structure and theoretically predicted Cmcm (β-B6O) structure. DFT calculations were performed by two different functionals, LDA and PBE. In this work, we focus on the structure, mechanical, and electronic properties of the experimentally known α-B6O structure and newly predicted modifications with the B6O stoichiometry. Moreover, mechanical properties including elastic constants, bulk, shear and elastic moduli, Poisson's ratio, Pugh's criterion, and hardness are given for the investigated modifications of B6O. In particular, we have investigated the influence of the high pressure on the electronic and mechanical properties. Results of our study provide more insight in the B6O superhard material and open new possibilities for various device applications.",
journal = "Modelling and Simulation in Materials Science and Engineering",
title = "Structure prediction, high pressure effect and properties investigation of superhard B6O",
volume = "28",
number = "3",
doi = "10.1088/1361-651X/ab6ec8"
}
Zagorac, J. B., Jovanović, D., Volkov-Husović, T., Matović, B.,& Zagorac, D.. (2020). Structure prediction, high pressure effect and properties investigation of superhard B6O. in Modelling and Simulation in Materials Science and Engineering, 28(3).
https://doi.org/10.1088/1361-651X/ab6ec8
Zagorac JB, Jovanović D, Volkov-Husović T, Matović B, Zagorac D. Structure prediction, high pressure effect and properties investigation of superhard B6O. in Modelling and Simulation in Materials Science and Engineering. 2020;28(3).
doi:10.1088/1361-651X/ab6ec8 .
Zagorac, Jelena B., Jovanović, Dušica, Volkov-Husović, Tatjana, Matović, Branko, Zagorac, Dejan, "Structure prediction, high pressure effect and properties investigation of superhard B6O" in Modelling and Simulation in Materials Science and Engineering, 28, no. 3 (2020),
https://doi.org/10.1088/1361-651X/ab6ec8 . .
2
3
4

Structural, microstructural and mechanical properties of sintered iron-doped mullite

Ilić, Svetlana M.; Ivanovski, Valentin N.; Radovanović, Željko; Egelja, Adela; Kokunešoski, Maja; Šaponjić, Aleksandra; Matović, Branko

(2020)

TY  - JOUR
AU  - Ilić, Svetlana M.
AU  - Ivanovski, Valentin N.
AU  - Radovanović, Željko
AU  - Egelja, Adela
AU  - Kokunešoski, Maja
AU  - Šaponjić, Aleksandra
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8942
AB  - The study of an effect of iron doping on the structural, microstructural and mechanical properties of sintered iron-doped mullite is presented. The results of phase composition, performed in detail by Mössbauer spectroscopy and XRD analysis, revealed that all added iron was inside the mullite lattice forming the single phase up to 12% by weight of Fe2O3 and 1300 °C. Samples, which were processed at 1550 °C, contained secondary phases, hematite or magnetite, regardless of the amount of added iron. Furthermore, the addition of iron decreases the values of relative linear shrinkage comparing to the values of undoped one (~18%) while the densities of the sintered samples rise as well as their values of microhardness. Even though the density values were not too high (90 TD%), the obtained values of microhardness were excellent, 1634 HV0.1 for maximum iron content due to the characteristic mullite microstructure.
T2  - Materials Science and Engineering: B
T1  - Structural, microstructural and mechanical properties of sintered iron-doped mullite
VL  - 256
SP  - 114543
DO  - 10.1016/j.mseb.2020.114543
ER  - 
@article{
author = "Ilić, Svetlana M. and Ivanovski, Valentin N. and Radovanović, Željko and Egelja, Adela and Kokunešoski, Maja and Šaponjić, Aleksandra and Matović, Branko",
year = "2020",
abstract = "The study of an effect of iron doping on the structural, microstructural and mechanical properties of sintered iron-doped mullite is presented. The results of phase composition, performed in detail by Mössbauer spectroscopy and XRD analysis, revealed that all added iron was inside the mullite lattice forming the single phase up to 12% by weight of Fe2O3 and 1300 °C. Samples, which were processed at 1550 °C, contained secondary phases, hematite or magnetite, regardless of the amount of added iron. Furthermore, the addition of iron decreases the values of relative linear shrinkage comparing to the values of undoped one (~18%) while the densities of the sintered samples rise as well as their values of microhardness. Even though the density values were not too high (90 TD%), the obtained values of microhardness were excellent, 1634 HV0.1 for maximum iron content due to the characteristic mullite microstructure.",
journal = "Materials Science and Engineering: B",
title = "Structural, microstructural and mechanical properties of sintered iron-doped mullite",
volume = "256",
pages = "114543",
doi = "10.1016/j.mseb.2020.114543"
}
Ilić, S. M., Ivanovski, V. N., Radovanović, Ž., Egelja, A., Kokunešoski, M., Šaponjić, A.,& Matović, B.. (2020). Structural, microstructural and mechanical properties of sintered iron-doped mullite. in Materials Science and Engineering: B, 256, 114543.
https://doi.org/10.1016/j.mseb.2020.114543
Ilić SM, Ivanovski VN, Radovanović Ž, Egelja A, Kokunešoski M, Šaponjić A, Matović B. Structural, microstructural and mechanical properties of sintered iron-doped mullite. in Materials Science and Engineering: B. 2020;256:114543.
doi:10.1016/j.mseb.2020.114543 .
Ilić, Svetlana M., Ivanovski, Valentin N., Radovanović, Željko, Egelja, Adela, Kokunešoski, Maja, Šaponjić, Aleksandra, Matović, Branko, "Structural, microstructural and mechanical properties of sintered iron-doped mullite" in Materials Science and Engineering: B, 256 (2020):114543,
https://doi.org/10.1016/j.mseb.2020.114543 . .
1
1
1

Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics

Maletaškić, Jelena; Todorović, Bratislav; Gilić, Martina; Marinović-Cincović, Milena; Yoshida, Katsumi; Gubarevich, Anna; Matović, Branko

(2020)

TY  - JOUR
AU  - Maletaškić, Jelena
AU  - Todorović, Bratislav
AU  - Gilić, Martina
AU  - Marinović-Cincović, Milena
AU  - Yoshida, Katsumi
AU  - Gubarevich, Anna
AU  - Matović, Branko
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8983
AB  - Sphene based glass-ceramics (CaTiSiO5), an excellent candidate for a host lattice of ceramic materials and for nuclear waste immobilization, has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization. Starting powders were melted at 1400?C for 2 h, cooled to room temperature, grounded again, then crystallized by thermal treatment yielding a sphene glass-ceramic. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD), FT-IR, Raman and thermal analyses (TG-DTA). Pure synthetic single phase sphene was formed at 800?C for 4 h, even it is very hard to obtain monophase powder at such low temperature. Powder morphology was analyzed by scanning electron microscopy (SEM).
T2  - Science of Sintering
T1  - Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics
VL  - 52
IS  - 1
SP  - 41
EP  - 52
DO  - 10.2298/SOS2001041M
ER  - 
@article{
author = "Maletaškić, Jelena and Todorović, Bratislav and Gilić, Martina and Marinović-Cincović, Milena and Yoshida, Katsumi and Gubarevich, Anna and Matović, Branko",
year = "2020",
abstract = "Sphene based glass-ceramics (CaTiSiO5), an excellent candidate for a host lattice of ceramic materials and for nuclear waste immobilization, has been prepared from a powder mixture of CaCO3, TiO2 and SiO2 using vibro-milling for homogenization. Starting powders were melted at 1400?C for 2 h, cooled to room temperature, grounded again, then crystallized by thermal treatment yielding a sphene glass-ceramic. The evolution of the phase composition during thermal treatment was investigated by X-ray powder diffraction (XRPD), FT-IR, Raman and thermal analyses (TG-DTA). Pure synthetic single phase sphene was formed at 800?C for 4 h, even it is very hard to obtain monophase powder at such low temperature. Powder morphology was analyzed by scanning electron microscopy (SEM).",
journal = "Science of Sintering",
title = "Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics",
volume = "52",
number = "1",
pages = "41-52",
doi = "10.2298/SOS2001041M"
}
Maletaškić, J., Todorović, B., Gilić, M., Marinović-Cincović, M., Yoshida, K., Gubarevich, A.,& Matović, B.. (2020). Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics. in Science of Sintering, 52(1), 41-52.
https://doi.org/10.2298/SOS2001041M
Maletaškić J, Todorović B, Gilić M, Marinović-Cincović M, Yoshida K, Gubarevich A, Matović B. Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics. in Science of Sintering. 2020;52(1):41-52.
doi:10.2298/SOS2001041M .
Maletaškić, Jelena, Todorović, Bratislav, Gilić, Martina, Marinović-Cincović, Milena, Yoshida, Katsumi, Gubarevich, Anna, Matović, Branko, "Synthesis and characterization of monophase CaO-TiO2-SiO2 (sphene) based glass-ceramics" in Science of Sintering, 52, no. 1 (2020):41-52,
https://doi.org/10.2298/SOS2001041M . .
2

Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC

Gulicovski, Jelena J.; Nenadović, Snežana S.; Kljajević, Ljiljana M.; Mirković, Miljana M.; Nišavić, Marija; Kragović, Milan M.; Stojmenović, Marija

(2020)

TY  - JOUR
AU  - Gulicovski, Jelena J.
AU  - Nenadović, Snežana S.
AU  - Kljajević, Ljiljana M.
AU  - Mirković, Miljana M.
AU  - Nišavić, Marija
AU  - Kragović, Milan M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8480
AB  - As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C.
T2  - Polymers
T1  - Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC
VL  - 12
IS  - 1
SP  - 248
DO  - 10.3390/polym12010248
ER  - 
@article{
author = "Gulicovski, Jelena J. and Nenadović, Snežana S. and Kljajević, Ljiljana M. and Mirković, Miljana M. and Nišavić, Marija and Kragović, Milan M. and Stojmenović, Marija",
year = "2020",
abstract = "As a material for application in the life sciences, a new composite material, geopolymer/CeO2 (GP_CeO2), was synthesized as a potential low-cost solid electrolyte for application in solid oxide fuel cells operating in intermediate temperature (IT-SOFC). The new materials were obtained from alkali-activated metakaolin (calcined clay) in the presence of CeO2 powders (x = 10%). Besides the commercial CeO2 powder, as a source of ceria, two differently synthesized CeO2 powders also were used: CeO2 synthesized by modified glycine nitrate procedure (MGNP) and self-propagating reaction at room temperature (SPRT). The structural, morphological, and electrical properties of pure and GP_CeO2-type samples were investigated by X-ray powder diffraction (XRPD), Fourier transform infrared (FTIR), BET, differential thermal and thermogravimetric analysis (DTA/TGA), scanning electron microscopy (FE-SEM), energy dispersive spectrometer (EDS), and method complex impedance (EIS). XRPD and matrix-assisted laser desorption and ionization time-of-flight (MALDI-TOF) analysis confirmed the formation of solid phase CeO2. The BET, DTA/TGA, FE-SEM, and EDS results indicated that particles of CeO2 were stabile interconnected and form a continuous conductive path, which was confirmed by the EIS method. The highest conductivity of 1.86 × 10−2 Ω−1 cm−1 was obtained for the sample GP_CeO2_MGNP at 700 °C. The corresponding value of activation energy for conductivity was 0.26 eV in the temperature range 500–700 °C.",
journal = "Polymers",
title = "Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC",
volume = "12",
number = "1",
pages = "248",
doi = "10.3390/polym12010248"
}
Gulicovski, J. J., Nenadović, S. S., Kljajević, L. M., Mirković, M. M., Nišavić, M., Kragović, M. M.,& Stojmenović, M.. (2020). Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC. in Polymers, 12(1), 248.
https://doi.org/10.3390/polym12010248
Gulicovski JJ, Nenadović SS, Kljajević LM, Mirković MM, Nišavić M, Kragović MM, Stojmenović M. Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC. in Polymers. 2020;12(1):248.
doi:10.3390/polym12010248 .
Gulicovski, Jelena J., Nenadović, Snežana S., Kljajević, Ljiljana M., Mirković, Miljana M., Nišavić, Marija, Kragović, Milan M., Stojmenović, Marija, "Geopolymer/CeO2 as Solid Electrolyte for IT-SOFC" in Polymers, 12, no. 1 (2020):248,
https://doi.org/10.3390/polym12010248 . .
9
6
9

Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application

Dodevski, Vladimir; Janković, Bojan Ž.; Mirković, Miljana M.; Kragović, Milan M.; Radović, Ivana; Veljković, Filip M.; Stojmenović, Marija

(2020)

TY  - JOUR
AU  - Dodevski, Vladimir
AU  - Janković, Bojan Ž.
AU  - Mirković, Miljana M.
AU  - Kragović, Milan M.
AU  - Radović, Ivana
AU  - Veljković, Filip M.
AU  - Stojmenović, Marija
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8922
AB  - Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.
T2  - Thermal Science
T1  - Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application
VL  - 24
IS  - 6 (Part A)
SP  - 3807
EP  - 3821
DO  - 10.2298/TSCI190913064D
ER  - 
@article{
author = "Dodevski, Vladimir and Janković, Bojan Ž. and Mirković, Miljana M. and Kragović, Milan M. and Radović, Ivana and Veljković, Filip M. and Stojmenović, Marija",
year = "2020",
abstract = "Goal of this work is to establish technical feasibility and fundamentals of producing activated carbon from plane tree seeds biomass for porous materials derivation. Bio-chars produced via carbonization from plane tree seeds precursor were activated in CO2 at 750 and 850?C, during various residence times. Their surface area and porosity were characterized by N2 adsorption at 77 K. Surface areas of activated carbons can be correlated with kinetics mechanism and activation energy magnitudes of oxidation reaction by CO2, which are closely related to applied activation temperature. Result showed that high temperature activated carbon had higher gas adsorption as compared to activated carbon obtained from lower temperature during two-hour residence time. Breakthrough behavior was detected at 850?C where surface reactions dominate, and it is characterized by autocatalytic kinetic model under designed conditions. Both, temperature and CO2 concentration in vicinity of solid surface effect on breakthrough time of adsorbent. Derived bio-chars are converted into high quality activated carbons, with surface area of 776.55 m2/g, where micro-pores with pore diameters less than 2 nm prevail. Produced activated carbons have properties comparable with commercially available activated carbons, which can be successfully used for removal of harmful gaseous pollutants toward air purification.",
journal = "Thermal Science",
title = "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application",
volume = "24",
number = "6 (Part A)",
pages = "3807-3821",
doi = "10.2298/TSCI190913064D"
}
Dodevski, V., Janković, B. Ž., Mirković, M. M., Kragović, M. M., Radović, I., Veljković, F. M.,& Stojmenović, M.. (2020). Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science, 24(6 (Part A)), 3807-3821.
https://doi.org/10.2298/TSCI190913064D
Dodevski V, Janković BŽ, Mirković MM, Kragović MM, Radović I, Veljković FM, Stojmenović M. Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application. in Thermal Science. 2020;24(6 (Part A)):3807-3821.
doi:10.2298/TSCI190913064D .
Dodevski, Vladimir, Janković, Bojan Ž., Mirković, Miljana M., Kragović, Milan M., Radović, Ivana, Veljković, Filip M., Stojmenović, Marija, "Carbon dioxide activation of the plane tree seeds derived bio-char: Kinetic properties and application" in Thermal Science, 24, no. 6 (Part A) (2020):3807-3821,
https://doi.org/10.2298/TSCI190913064D . .

The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water

Mladenović, Nataša; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Ivanović, Marija D.; Čalija, Bojan; Gulicovski, Jelena J.; Trivunac, Katarina V.

(2020)

TY  - JOUR
AU  - Mladenović, Nataša
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Ivanović, Marija D.
AU  - Čalija, Bojan
AU  - Gulicovski, Jelena J.
AU  - Trivunac, Katarina V.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8561
AB  - Fundamental research of inorganic polymers prepared from available aluminosilicate precursors represent an innovative class of materials characterized by low energy consumption for production. This is just one of the reasons why their use is focused in protecting the environment for removing of heavy metals from aqueous solutions. The concentration of hydroxide as activator solution plays an important role in the geopolymerization process. The present study examined the use of geopolymer materials, obtained in reaction of geopolymerizations of metakaolin as precursor activated with NaOH concentration 2.0, 4.0, 6.0 and 8.0 mol/dm3 for removal of cadmium ions from aqueous solutions. The structure and properties of the obtained geopolymer samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection infrared spectroscopy (DRIFTS). To investigate the surface charge of geopolymers the zeta potential measurements were performed. Batch adsorption experiments conducted at room temperature (23 ± 1 °C) showed that the adsorption pattern followed the Freundlich isotherm model. The maximum removal of cadmium obtained from batch studies was 84.1% for GP6M at pH ≈ 6.7. The results generally showed that geopolymer samples could be considered as a potential adsorbent for cadmium removal from aqueous solutions. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.
T2  - Journal of Inorganic and Organometallic Polymers and Materials
T1  - The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water
VL  - 30
IS  - 2
SP  - 554
EP  - 563
DO  - 10.1007/s10904-019-01215-y
ER  - 
@article{
author = "Mladenović, Nataša and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Ivanović, Marija D. and Čalija, Bojan and Gulicovski, Jelena J. and Trivunac, Katarina V.",
year = "2020",
abstract = "Fundamental research of inorganic polymers prepared from available aluminosilicate precursors represent an innovative class of materials characterized by low energy consumption for production. This is just one of the reasons why their use is focused in protecting the environment for removing of heavy metals from aqueous solutions. The concentration of hydroxide as activator solution plays an important role in the geopolymerization process. The present study examined the use of geopolymer materials, obtained in reaction of geopolymerizations of metakaolin as precursor activated with NaOH concentration 2.0, 4.0, 6.0 and 8.0 mol/dm3 for removal of cadmium ions from aqueous solutions. The structure and properties of the obtained geopolymer samples were studied by X-ray diffraction (XRD), scanning electron microscopy (SEM) and diffuse reflection infrared spectroscopy (DRIFTS). To investigate the surface charge of geopolymers the zeta potential measurements were performed. Batch adsorption experiments conducted at room temperature (23 ± 1 °C) showed that the adsorption pattern followed the Freundlich isotherm model. The maximum removal of cadmium obtained from batch studies was 84.1% for GP6M at pH ≈ 6.7. The results generally showed that geopolymer samples could be considered as a potential adsorbent for cadmium removal from aqueous solutions. © 2019, Springer Science+Business Media, LLC, part of Springer Nature.",
journal = "Journal of Inorganic and Organometallic Polymers and Materials",
title = "The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water",
volume = "30",
number = "2",
pages = "554-563",
doi = "10.1007/s10904-019-01215-y"
}
Mladenović, N., Kljajević, L. M., Nenadović, S. S., Ivanović, M. D., Čalija, B., Gulicovski, J. J.,& Trivunac, K. V.. (2020). The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water. in Journal of Inorganic and Organometallic Polymers and Materials, 30(2), 554-563.
https://doi.org/10.1007/s10904-019-01215-y
Mladenović N, Kljajević LM, Nenadović SS, Ivanović MD, Čalija B, Gulicovski JJ, Trivunac KV. The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water. in Journal of Inorganic and Organometallic Polymers and Materials. 2020;30(2):554-563.
doi:10.1007/s10904-019-01215-y .
Mladenović, Nataša, Kljajević, Ljiljana M., Nenadović, Snežana S., Ivanović, Marija D., Čalija, Bojan, Gulicovski, Jelena J., Trivunac, Katarina V., "The Applications of New Inorganic Polymer for Adsorption Cadmium from Waste Water" in Journal of Inorganic and Organometallic Polymers and Materials, 30, no. 2 (2020):554-563,
https://doi.org/10.1007/s10904-019-01215-y . .
7
6
7

Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite

Bučevac, Dušan; Omerašević, Mia; Egelja, Adela; Radovanović, Željko; Kljajević, Ljiljana M.; Nenadović, Snežana S.; Krstić, Vladimir

(2020)

TY  - JOUR
AU  - Bučevac, Dušan
AU  - Omerašević, Mia
AU  - Egelja, Adela
AU  - Radovanović, Željko
AU  - Kljajević, Ljiljana M.
AU  - Nenadović, Snežana S.
AU  - Krstić, Vladimir
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8888
AB  - Comprehensive study on effect of YAG amount on densification, creep resistance and room-temperature mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 degrees C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good room-temperature mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis starting from aluminum nitrate and yttrium nitrate. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite with up to 30 vol% YAG. The presence of YAG was found to be very effective in improving creep resistance of Al2O3-YAG composite. Large Y3+ ions blocked diffusion along Al2O3 grain boundaries, reduced diffusivity and therefore enhanced creep resistance of Al2O3-YAG composite which continuously increased as the YAG amount increased. The presence of YAG was also found to improve mechanical properties such as hardness and elastic modulus. The improvement of these properties was ascribed to increased density of Al(2)O(3)YAG composites owing to high sintering activity of YAG powder. While fracture strength of the composite can be as high as that of monolithic Al2O3, fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness.
T2  - Ceramics International
T1  - Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite
VL  - 46
IS  - 10
SP  - 15998
EP  - 16007
DO  - 10.1016/j.ceramint.2020.03.150
ER  - 
@article{
author = "Bučevac, Dušan and Omerašević, Mia and Egelja, Adela and Radovanović, Željko and Kljajević, Ljiljana M. and Nenadović, Snežana S. and Krstić, Vladimir",
year = "2020",
abstract = "Comprehensive study on effect of YAG amount on densification, creep resistance and room-temperature mechanical properties of Al2O3-YAG composite pressureless sintered at 1600 degrees C was conducted. The main goal was to optimize the amount of YAG in order to fabricate a composite with improved creep resistance and sufficiently good room-temperature mechanical properties. The composite was made by mixing a commercially available Al2O3 powder with fine YAG powder obtained by glycine-nitrate combustion synthesis starting from aluminum nitrate and yttrium nitrate. Increased driving force for sintering of fine YAG powder allowed fabrication of dense Al2O3-YAG composite with up to 30 vol% YAG. The presence of YAG was found to be very effective in improving creep resistance of Al2O3-YAG composite. Large Y3+ ions blocked diffusion along Al2O3 grain boundaries, reduced diffusivity and therefore enhanced creep resistance of Al2O3-YAG composite which continuously increased as the YAG amount increased. The presence of YAG was also found to improve mechanical properties such as hardness and elastic modulus. The improvement of these properties was ascribed to increased density of Al(2)O(3)YAG composites owing to high sintering activity of YAG powder. While fracture strength of the composite can be as high as that of monolithic Al2O3, fracture toughness of composite decreased continuously as the YAG content increased. The decrease was ascribed to transgranular fracture of both YAG and Al2O3 grains in samples containing larger amounts of YAG. The proper balance between fracture toughness and creep resistance was found in composite containing 18 vol% YAG which had considerably improved creep resistance accompanied by a relatively small decrease in fracture toughness.",
journal = "Ceramics International",
title = "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite",
volume = "46",
number = "10",
pages = "15998-16007",
doi = "10.1016/j.ceramint.2020.03.150"
}
Bučevac, D., Omerašević, M., Egelja, A., Radovanović, Ž., Kljajević, L. M., Nenadović, S. S.,& Krstić, V.. (2020). Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite. in Ceramics International, 46(10), 15998-16007.
https://doi.org/10.1016/j.ceramint.2020.03.150
Bučevac D, Omerašević M, Egelja A, Radovanović Ž, Kljajević LM, Nenadović SS, Krstić V. Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite. in Ceramics International. 2020;46(10):15998-16007.
doi:10.1016/j.ceramint.2020.03.150 .
Bučevac, Dušan, Omerašević, Mia, Egelja, Adela, Radovanović, Željko, Kljajević, Ljiljana M., Nenadović, Snežana S., Krstić, Vladimir, "Effect of YAG content on creep resistance and mechanical properties of Al2O3-YAG composite" in Ceramics International, 46, no. 10 (2020):15998-16007,
https://doi.org/10.1016/j.ceramint.2020.03.150 . .
4
2
2

Macroporous monoliths based оn natural mineral sources, clay аnd diatomite

Kokunešoski, Maja; Stanković, Miroslav; Vuković, Marina; Majstorović, Jelena; Šaponjić, Đorđe; Ilić, Svetlana; Šaponjić, Aleksandra

(2020)

TY  - JOUR
AU  - Kokunešoski, Maja
AU  - Stanković, Miroslav
AU  - Vuković, Marina
AU  - Majstorović, Jelena
AU  - Šaponjić, Đorđe
AU  - Ilić, Svetlana
AU  - Šaponjić, Aleksandra
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9790
AB  - Macroporous silica ceramic was obtained using clay and diatomite. Boric acid as a low-cost additive in the amount of 1 wt% was used. These porous materials were obtained at low forming pressure (40-80 MPa) and lower sintering temperature (850-1300 ºC) for 4h in air. The influence of boric acid, forming pressure, and sintering temperature on the microstructure, porosity parameters, and mechanical properties of obtained porous monoliths were investigated. As-received and the modified samples were characterized by X-ray diffraction, FTIR, SEM, and mercury porosimetry measurements. As for modified clay and diatomite, they were pressed at 60 MPa and then sintered at 1150 ºC, obtaining porosities of about 10 % and 60 %, respectively. Both of the analyzed samples had the pore diameter in the range of macroporous materials. The pore diameters of clay samples are ranging from 0.1-10 μm, whereas the pore diameter of diatomite samples was slightly lower with values ranging from 0.05-5 μm. Modified diatomite samples have a lower Young modulus in comparison to modified clay samples.
T2  - Science of Sintering
T1  - Macroporous monoliths based оn natural mineral sources, clay аnd diatomite
VL  - 52
IS  - 3
SP  - 339
EP  - 348
DO  - 10.2298/SOS2003339K
ER  - 
@article{
author = "Kokunešoski, Maja and Stanković, Miroslav and Vuković, Marina and Majstorović, Jelena and Šaponjić, Đorđe and Ilić, Svetlana and Šaponjić, Aleksandra",
year = "2020",
abstract = "Macroporous silica ceramic was obtained using clay and diatomite. Boric acid as a low-cost additive in the amount of 1 wt% was used. These porous materials were obtained at low forming pressure (40-80 MPa) and lower sintering temperature (850-1300 ºC) for 4h in air. The influence of boric acid, forming pressure, and sintering temperature on the microstructure, porosity parameters, and mechanical properties of obtained porous monoliths were investigated. As-received and the modified samples were characterized by X-ray diffraction, FTIR, SEM, and mercury porosimetry measurements. As for modified clay and diatomite, they were pressed at 60 MPa and then sintered at 1150 ºC, obtaining porosities of about 10 % and 60 %, respectively. Both of the analyzed samples had the pore diameter in the range of macroporous materials. The pore diameters of clay samples are ranging from 0.1-10 μm, whereas the pore diameter of diatomite samples was slightly lower with values ranging from 0.05-5 μm. Modified diatomite samples have a lower Young modulus in comparison to modified clay samples.",
journal = "Science of Sintering",
title = "Macroporous monoliths based оn natural mineral sources, clay аnd diatomite",
volume = "52",
number = "3",
pages = "339-348",
doi = "10.2298/SOS2003339K"
}
Kokunešoski, M., Stanković, M., Vuković, M., Majstorović, J., Šaponjić, Đ., Ilić, S.,& Šaponjić, A.. (2020). Macroporous monoliths based оn natural mineral sources, clay аnd diatomite. in Science of Sintering, 52(3), 339-348.
https://doi.org/10.2298/SOS2003339K
Kokunešoski M, Stanković M, Vuković M, Majstorović J, Šaponjić Đ, Ilić S, Šaponjić A. Macroporous monoliths based оn natural mineral sources, clay аnd diatomite. in Science of Sintering. 2020;52(3):339-348.
doi:10.2298/SOS2003339K .
Kokunešoski, Maja, Stanković, Miroslav, Vuković, Marina, Majstorović, Jelena, Šaponjić, Đorđe, Ilić, Svetlana, Šaponjić, Aleksandra, "Macroporous monoliths based оn natural mineral sources, clay аnd diatomite" in Science of Sintering, 52, no. 3 (2020):339-348,
https://doi.org/10.2298/SOS2003339K . .
1
1

Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient

Omerašević, Mia; Lukić, Miodrag; Savić-Biserčić, Marjetka; Savić, Andrija B.; Matović, Ljiljana; Baščarević, Zvezdana D.; Bučevac, Dušan

(2020)

TY  - JOUR
AU  - Omerašević, Mia
AU  - Lukić, Miodrag
AU  - Savić-Biserčić, Marjetka
AU  - Savić, Andrija B.
AU  - Matović, Ljiljana
AU  - Baščarević, Zvezdana D.
AU  - Bučevac, Dušan
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8563
AB  - A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019
T2  - Nuclear Engineering and Technology
T1  - Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient
VL  - 52
IS  - 1
SP  - 115
EP  - 122
DO  - 10.1016/j.net.2019.07.001
ER  - 
@article{
author = "Omerašević, Mia and Lukić, Miodrag and Savić-Biserčić, Marjetka and Savić, Andrija B. and Matović, Ljiljana and Baščarević, Zvezdana D. and Bučevac, Dušan",
year = "2020",
abstract = "A promising method for removal of Cs ions from water and their incorporation into stable crystal structure ready for safe and permanent disposal was described. Cs-exchanged X zeolite was hot-pressed at temperature ranging from 800 to 950 °C to fabricate dense pollucite ceramics. It was found that the application of external pressure reduced the pollucite formation temperature. The effect of sintering temperature on density, phase composition and mechanical properties was investigated. The highest density of 92.5 %TD and the highest compressive strength of 79 MPa were measured in pollucite hot-pressed at 950 °C for 3 h. Heterogeneity of samples obtained at 950 °C was determined using scanning electron microscopy. The pollucite hot-pressed at 950 °C had low linear thermal expansion coefficient of ∼4.67 × 10−6 K−1 in the temperature range from 100 to 1000 °C. © 2019",
journal = "Nuclear Engineering and Technology",
title = "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient",
volume = "52",
number = "1",
pages = "115-122",
doi = "10.1016/j.net.2019.07.001"
}
Omerašević, M., Lukić, M., Savić-Biserčić, M., Savić, A. B., Matović, L., Baščarević, Z. D.,& Bučevac, D.. (2020). Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology, 52(1), 115-122.
https://doi.org/10.1016/j.net.2019.07.001
Omerašević M, Lukić M, Savić-Biserčić M, Savić AB, Matović L, Baščarević ZD, Bučevac D. Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient. in Nuclear Engineering and Technology. 2020;52(1):115-122.
doi:10.1016/j.net.2019.07.001 .
Omerašević, Mia, Lukić, Miodrag, Savić-Biserčić, Marjetka, Savić, Andrija B., Matović, Ljiljana, Baščarević, Zvezdana D., Bučevac, Dušan, "Permanent disposal of Cs ions in the form of dense pollucite ceramics having low thermal expansion coefficient" in Nuclear Engineering and Technology, 52, no. 1 (2020):115-122,
https://doi.org/10.1016/j.net.2019.07.001 . .
3
2
2

XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited

Medić-Ilić, Mirjana; Bundaleski, Nenad; Ivanović, Nenad; Teodoro, Orlando M. N. D.; Rakočević, Zlatko Lj.; Minić, Dragica M.; Romčević, Nebojša Ž.; Radisavljević, Ivana

(2020)

TY  - JOUR
AU  - Medić-Ilić, Mirjana
AU  - Bundaleski, Nenad
AU  - Ivanović, Nenad
AU  - Teodoro, Orlando M. N. D.
AU  - Rakočević, Zlatko Lj.
AU  - Minić, Dragica M.
AU  - Romčević, Nebojša Ž.
AU  - Radisavljević, Ivana
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8910
AB  - Recently introduced model for quantitative analysis of in-depth non-uniform surfaces is applied to reexamine the X-ray Photoelectron Spectroscopy (XPS) data of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 crystalline samples. Special attention is paid to the precise identification of phases which form the bulk-like near-surface region and the surface overlayers (the oxide layer and the layer of organic impurities), as well as the influence of surface morphology on the measurements. The obtained results fully support earlier qualitative estimations, but also provide new quantitative insight into the composition of the three investigated regions. The near-surface region of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 samples is slightly electropositive, with cation/anion ratio 52:48 and 53:47, respectively. Model surface structures, which are fully compatible with the experimental results, comprise 0.76 nm thick CdTeO3 layer at the surface of Cd0.99Fe0.01Te0.97Se0.03 and 0.33 nm thick mixed ZnO/TeO2 oxide layer on Zn0.98Fe0.02Te0.91Se0.09. In both samples the oxide layer is only a few atomic layers thick, implying that it suppresses further rapid migration of oxygen into the bulk.
T2  - Vacuum
T1  - XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited
VL  - 176
SP  - 109340
DO  - 10.1016/j.vacuum.2020.109340
ER  - 
@article{
author = "Medić-Ilić, Mirjana and Bundaleski, Nenad and Ivanović, Nenad and Teodoro, Orlando M. N. D. and Rakočević, Zlatko Lj. and Minić, Dragica M. and Romčević, Nebojša Ž. and Radisavljević, Ivana",
year = "2020",
abstract = "Recently introduced model for quantitative analysis of in-depth non-uniform surfaces is applied to reexamine the X-ray Photoelectron Spectroscopy (XPS) data of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 crystalline samples. Special attention is paid to the precise identification of phases which form the bulk-like near-surface region and the surface overlayers (the oxide layer and the layer of organic impurities), as well as the influence of surface morphology on the measurements. The obtained results fully support earlier qualitative estimations, but also provide new quantitative insight into the composition of the three investigated regions. The near-surface region of Cd0.99Fe0.01Te0.97Se0.03 and Zn0.98Fe0.02Te0.91Se0.09 samples is slightly electropositive, with cation/anion ratio 52:48 and 53:47, respectively. Model surface structures, which are fully compatible with the experimental results, comprise 0.76 nm thick CdTeO3 layer at the surface of Cd0.99Fe0.01Te0.97Se0.03 and 0.33 nm thick mixed ZnO/TeO2 oxide layer on Zn0.98Fe0.02Te0.91Se0.09. In both samples the oxide layer is only a few atomic layers thick, implying that it suppresses further rapid migration of oxygen into the bulk.",
journal = "Vacuum",
title = "XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited",
volume = "176",
pages = "109340",
doi = "10.1016/j.vacuum.2020.109340"
}
Medić-Ilić, M., Bundaleski, N., Ivanović, N., Teodoro, O. M. N. D., Rakočević, Z. Lj., Minić, D. M., Romčević, N. Ž.,& Radisavljević, I.. (2020). XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited. in Vacuum, 176, 109340.
https://doi.org/10.1016/j.vacuum.2020.109340
Medić-Ilić M, Bundaleski N, Ivanović N, Teodoro OMND, Rakočević ZL, Minić DM, Romčević NŽ, Radisavljević I. XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited. in Vacuum. 2020;176:109340.
doi:10.1016/j.vacuum.2020.109340 .
Medić-Ilić, Mirjana, Bundaleski, Nenad, Ivanović, Nenad, Teodoro, Orlando M. N. D., Rakočević, Zlatko Lj., Minić, Dragica M., Romčević, Nebojša Ž., Radisavljević, Ivana, "XPS measurements of air-exposed Cd(Zn)1xFexTe1ySey surfaces revisited" in Vacuum, 176 (2020):109340,
https://doi.org/10.1016/j.vacuum.2020.109340 . .

Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders

Maksimović, Vesna; Kusigerski, Vladan; Stoiljković, Milovan; Maletaškić, Jelena; Nikolić, Nebojša D.

(2020)

TY  - JOUR
AU  - Maksimović, Vesna
AU  - Kusigerski, Vladan
AU  - Stoiljković, Milovan
AU  - Maletaškić, Jelena
AU  - Nikolić, Nebojša D.
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/8950
AB  - Nickel−cobalt (Ni−Co) alloy powders were produced galvanostatically by using sulphate electrolytes withvarious ratios of Ni2+/Co2+ (mole ratios). The morphology, phase structure, chemical composition and magneticproperties were examined by scanning electron microscope (SEM), X-ray diffractometer (XRD), atomic emissionspectrometer (AES), and SQUID-based magnetometer, respectively. Morphology of the particles changed fromcauliflower-like and dendritic to coral-like and spongy-like ones with increasing Ni2+/Co2+ ratio from 0.25 to 4.0. XRDanalysis of the Ni−Co powders revealed that the decrease of Ni2+/Co2+ ratios (the increase of Co content) caused achange of structure from face centered cubic (FCC) obtained for the ratios of 4.0, 1.5 and 0.67 to a mixture of FCC andhexagonal closed-packed (HCP) phases for the ratio of 0.25. The increasing content of nickel led to change ofmechanism of electrolysis from irregular (up to ~40 wt.% Ni in the electrolytes) to close to equilibrium (between~40 and 60 wt.% Ni in the electrolytes) and anomalous co-deposition (over 60 wt.% Ni in the electrolytes) type. All ofthe obtained Ni−Co alloy samples behaved as soft magnetic materials while their magnetic parameters showedimmediate composition dependence since both coercivity and saturation magnetization almost linearly increased withincrease of the Co content.
T2  - Transactions of Nonferrows Metals Society of China
T1  - Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders
VL  - 30
IS  - 4
SP  - 1046
EP  - 1057
DO  - 10.1016/S1003-6326(20)65276-1
ER  - 
@article{
author = "Maksimović, Vesna and Kusigerski, Vladan and Stoiljković, Milovan and Maletaškić, Jelena and Nikolić, Nebojša D.",
year = "2020",
abstract = "Nickel−cobalt (Ni−Co) alloy powders were produced galvanostatically by using sulphate electrolytes withvarious ratios of Ni2+/Co2+ (mole ratios). The morphology, phase structure, chemical composition and magneticproperties were examined by scanning electron microscope (SEM), X-ray diffractometer (XRD), atomic emissionspectrometer (AES), and SQUID-based magnetometer, respectively. Morphology of the particles changed fromcauliflower-like and dendritic to coral-like and spongy-like ones with increasing Ni2+/Co2+ ratio from 0.25 to 4.0. XRDanalysis of the Ni−Co powders revealed that the decrease of Ni2+/Co2+ ratios (the increase of Co content) caused achange of structure from face centered cubic (FCC) obtained for the ratios of 4.0, 1.5 and 0.67 to a mixture of FCC andhexagonal closed-packed (HCP) phases for the ratio of 0.25. The increasing content of nickel led to change ofmechanism of electrolysis from irregular (up to ~40 wt.% Ni in the electrolytes) to close to equilibrium (between~40 and 60 wt.% Ni in the electrolytes) and anomalous co-deposition (over 60 wt.% Ni in the electrolytes) type. All ofthe obtained Ni−Co alloy samples behaved as soft magnetic materials while their magnetic parameters showedimmediate composition dependence since both coercivity and saturation magnetization almost linearly increased withincrease of the Co content.",
journal = "Transactions of Nonferrows Metals Society of China",
title = "Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders",
volume = "30",
number = "4",
pages = "1046-1057",
doi = "10.1016/S1003-6326(20)65276-1"
}
Maksimović, V., Kusigerski, V., Stoiljković, M., Maletaškić, J.,& Nikolić, N. D.. (2020). Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders. in Transactions of Nonferrows Metals Society of China, 30(4), 1046-1057.
https://doi.org/10.1016/S1003-6326(20)65276-1
Maksimović V, Kusigerski V, Stoiljković M, Maletaškić J, Nikolić ND. Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders. in Transactions of Nonferrows Metals Society of China. 2020;30(4):1046-1057.
doi:10.1016/S1003-6326(20)65276-1 .
Maksimović, Vesna, Kusigerski, Vladan, Stoiljković, Milovan, Maletaškić, Jelena, Nikolić, Nebojša D., "Influence of Ni2+/Co2+ ratio in electrolyte on morphology, structure and magnetic properties of electrolytically produced Ni−Co alloy powders" in Transactions of Nonferrows Metals Society of China, 30, no. 4 (2020):1046-1057,
https://doi.org/10.1016/S1003-6326(20)65276-1 . .