TY  - JOUR
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Jovanović, Sonja
AU  - Rmuš, Jelena
AU  - Olejniczak, Andrzej
AU  - Mraković, Ana Đ.
AU  - Lazarević, Jasmina
AU  - Uskoković-Marković, Snežana
AU  - Lazarević, Nenad
AU  - Skuratov, Vladimir A.
AU  - Jovanović, Zoran
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10376
AB  - Ion beam irradiation is a versatile tool for structural modification andengineering of new materials. In this study, 12-tungstophosphoric acid (WPA)films of different thickness were spin-coated on platinized silicon substrate andirradiated with low energy hydrogen ions (10 keV) and swift heavy ions (Bi,Xe, and V) with energies up to 710 MeV. The different energy/fluence combi-nations allowed controllable structural changes that were investigated in detailusing Raman and Infrared spectroscopy. For 120-nm-thick WPA samples, theirradiation led to the decrease of intensity of the skeletal and W-Oc-W bands ofKeggin anion in order: Bi < V < Xe (for their applied energy/fluence combina-tion). Also, symmetry change of Keggin anion similar to the one observed inthe case of Keggin anions interacting with the supports was observed. For theselected ion beam irradiation parameters, xenon ion beam induced transforma-tion of WPA to polytungstate. For 20-μm-thick WPA samples, the irradiationwith hydrogen ion beam induced changes of skeletal vibrations and increasedindividualistic behavior of Keggin anions. As the fluence increased, theamount of the Keggin anions partially transformed to bronze also increased.Irradiation with vanadium also caused transformation to bronze-like structurebut with higher ratio of terminal W=Odbonds. The overall results show clearReceived: 9 February 2022Revised: 17 June 2022Accepted: 5 July 2022DOI: 10.1002/jrs.6423J Raman Spectrosc.2022;1–11.wileyonlinelibrary.com/journal/jrs© 2022 John Wiley & Sons Ltd.1correlation between degree of structural modification of WPA and thecalculated displacement per atom value. These results open possibilities forengineering new catalytically active structures of polyoxometalates with thehelp of ion beams.
T2  - Journal of Raman Spectroscopy
T1  - Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid
DO  - 10.1002/jrs.6423
ER  - 

@article{
author = "Mravik, Željko and Bajuk-Bogdanović, Danica V. and Jovanović, Sonja and Rmuš, Jelena and Olejniczak, Andrzej and Mraković, Ana Đ. and Lazarević, Jasmina and Uskoković-Marković, Snežana and Lazarević, Nenad and Skuratov, Vladimir A. and Jovanović, Zoran",
year = "2022",
abstract = "Ion beam irradiation is a versatile tool for structural modification andengineering of new materials. In this study, 12-tungstophosphoric acid (WPA)films of different thickness were spin-coated on platinized silicon substrate andirradiated with low energy hydrogen ions (10 keV) and swift heavy ions (Bi,Xe, and V) with energies up to 710 MeV. The different energy/fluence combi-nations allowed controllable structural changes that were investigated in detailusing Raman and Infrared spectroscopy. For 120-nm-thick WPA samples, theirradiation led to the decrease of intensity of the skeletal and W-Oc-W bands ofKeggin anion in order: Bi < V < Xe (for their applied energy/fluence combina-tion). Also, symmetry change of Keggin anion similar to the one observed inthe case of Keggin anions interacting with the supports was observed. For theselected ion beam irradiation parameters, xenon ion beam induced transforma-tion of WPA to polytungstate. For 20-μm-thick WPA samples, the irradiationwith hydrogen ion beam induced changes of skeletal vibrations and increasedindividualistic behavior of Keggin anions. As the fluence increased, theamount of the Keggin anions partially transformed to bronze also increased.Irradiation with vanadium also caused transformation to bronze-like structurebut with higher ratio of terminal W=Odbonds. The overall results show clearReceived: 9 February 2022Revised: 17 June 2022Accepted: 5 July 2022DOI: 10.1002/jrs.6423J Raman Spectrosc.2022;1–11.wileyonlinelibrary.com/journal/jrs© 2022 John Wiley & Sons Ltd.1correlation between degree of structural modification of WPA and thecalculated displacement per atom value. These results open possibilities forengineering new catalytically active structures of polyoxometalates with thehelp of ion beams.",
journal = "Journal of Raman Spectroscopy",
title = "Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid",
doi = "10.1002/jrs.6423"
}

Mravik, Ž., Bajuk-Bogdanović, D. V., Jovanović, S., Rmuš, J., Olejniczak, A., Mraković, A. Đ., Lazarević, J., Uskoković-Marković, S., Lazarević, N., Skuratov, V. A.,& Jovanović, Z.. (2022). Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid. in Journal of Raman Spectroscopy.
https://doi.org/10.1002/jrs.6423

Mravik Ž, Bajuk-Bogdanović DV, Jovanović S, Rmuš J, Olejniczak A, Mraković AĐ, Lazarević J, Uskoković-Marković S, Lazarević N, Skuratov VA, Jovanović Z. Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid. in Journal of Raman Spectroscopy. 2022;.
doi:10.1002/jrs.6423 .

Mravik, Željko, Bajuk-Bogdanović, Danica V., Jovanović, Sonja, Rmuš, Jelena, Olejniczak, Andrzej, Mraković, Ana Đ., Lazarević, Jasmina, Uskoković-Marković, Snežana, Lazarević, Nenad, Skuratov, Vladimir A., Jovanović, Zoran, "Modification of Keggin anion structure with ion beams—A new spectroscopic insights into the effects of keV- and MeV-ion beam irradiation on 12-tungstophosphoric acid" in Journal of Raman Spectroscopy (2022),
https://doi.org/10.1002/jrs.6423 . .

TY  - CONF
AU  - Mravik, Željko
AU  - Gloginjić, Marko
AU  - Bajuk-Bogdanović, Danica
AU  - Pejčić, Milica
AU  - Olejniczak, Andrzej
AU  - Skuratov, Vladimir
AU  - Jovanović, Zoran
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12526
AB  - Surface chemistry of graphene oxide (GO) plays an important role in possible applications of the material. Beside traditional approaches, like thermal treatment, ion beam irradiation has been recognized as a tool for modifying not only the surface chemistry, but also the structural properties of GO. In this study, the GO paper was irradiated with 15 keV proton beam with fluencies from 5×1016 to 2×1017 ions/cm2 . Surface chemistry of GO was monitored with Fourier-transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) while structural changes were investigated with Raman spectroscopy. XPS and ATR-FTIR methods showed partial reduction of GO, with preferential desorption of basal plane alkoxy and epoxy oxygen groups. In terms of structural changes, intensity ratio of D and G peaks decreased linearly with the increase of C/O ratio i.e. increase of fluence. The reduction of GO with hydrogen atom was also investigated dynamically by semi-empirical calculations. The calculations for the epoxy group have identified energy ranges at which reduction is a consequence of physical (>20 eV) or chemical (<1.5 eV) processes. The results are showing a potential of ion beam irradiation for controllable modification of structural and surface properties which can be used for tuning of the charge storage properties of graphene oxide.
PB  - Zagreb, Croatia : Ruđer Bošković Institute
C3  - SCIRES 2021 : The 3rd International Conference Solid-State Science & Research : Book of abstracts
T1  - Surface chemistry of ion beam irradiated graphene oxide papers
SP  - 38
EP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12526
ER  - 

@conference{
author = "Mravik, Željko and Gloginjić, Marko and Bajuk-Bogdanović, Danica and Pejčić, Milica and Olejniczak, Andrzej and Skuratov, Vladimir and Jovanović, Zoran",
year = "2021",
abstract = "Surface chemistry of graphene oxide (GO) plays an important role in possible applications of the material. Beside traditional approaches, like thermal treatment, ion beam irradiation has been recognized as a tool for modifying not only the surface chemistry, but also the structural properties of GO. In this study, the GO paper was irradiated with 15 keV proton beam with fluencies from 5×1016 to 2×1017 ions/cm2 . Surface chemistry of GO was monitored with Fourier-transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS) while structural changes were investigated with Raman spectroscopy. XPS and ATR-FTIR methods showed partial reduction of GO, with preferential desorption of basal plane alkoxy and epoxy oxygen groups. In terms of structural changes, intensity ratio of D and G peaks decreased linearly with the increase of C/O ratio i.e. increase of fluence. The reduction of GO with hydrogen atom was also investigated dynamically by semi-empirical calculations. The calculations for the epoxy group have identified energy ranges at which reduction is a consequence of physical (>20 eV) or chemical (<1.5 eV) processes. The results are showing a potential of ion beam irradiation for controllable modification of structural and surface properties which can be used for tuning of the charge storage properties of graphene oxide.",
publisher = "Zagreb, Croatia : Ruđer Bošković Institute",
journal = "SCIRES 2021 : The 3rd International Conference Solid-State Science & Research : Book of abstracts",
title = "Surface chemistry of ion beam irradiated graphene oxide papers",
pages = "38-38",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12526"
}

Mravik, Ž., Gloginjić, M., Bajuk-Bogdanović, D., Pejčić, M., Olejniczak, A., Skuratov, V.,& Jovanović, Z.. (2021). Surface chemistry of ion beam irradiated graphene oxide papers. in SCIRES 2021 : The 3rd International Conference Solid-State Science & Research : Book of abstracts
Zagreb, Croatia : Ruđer Bošković Institute., 38-38.
https://hdl.handle.net/21.15107/rcub_vinar_12526

Mravik Ž, Gloginjić M, Bajuk-Bogdanović D, Pejčić M, Olejniczak A, Skuratov V, Jovanović Z. Surface chemistry of ion beam irradiated graphene oxide papers. in SCIRES 2021 : The 3rd International Conference Solid-State Science & Research : Book of abstracts. 2021;:38-38.
https://hdl.handle.net/21.15107/rcub_vinar_12526 .

Mravik, Željko, Gloginjić, Marko, Bajuk-Bogdanović, Danica, Pejčić, Milica, Olejniczak, Andrzej, Skuratov, Vladimir, Jovanović, Zoran, "Surface chemistry of ion beam irradiated graphene oxide papers" in SCIRES 2021 : The 3rd International Conference Solid-State Science & Research : Book of abstracts (2021):38-38,
https://hdl.handle.net/21.15107/rcub_vinar_12526 .

TY  - CONF
AU  - Gloginjić, Marko
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica V.
AU  - Olejniczak, Andrzej
AU  - Skuratov, Vladimir A.
AU  - Jovanović, Zoran M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10833
AB  - Graphene oxide (GO) is a promising material for the futuregraphene-based electronics where the surface chemistry and structural properties of GO may play an important role. One of the unique methods with great potentialfor controllable modification of materials’ properties is the ion beam irradiation. In the present study, GO paper was irradiated with 15 keV proton- beam to a fluences from 5×10 16 to 2×1017 ionscm-2 , while Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray photoelectronspectroscopy (XPS) and Raman spectroscopy (RS)were used for the examination of surface chemistry and structural properties of the irradiated material. It was shown that proton beam irradiation leads to a partial reduction of GOwith the preferential removal of the alkoxy and epoxy groups. With the increasing fluence, the oxygen content from the XPS method and the intensity ratioof D and G Raman bandsboth showed decreasing trends. When oxygen content was compared to relative areas of specific functional groups and parameters of Raman peaks an interesting correlation was found that suggest optimal fluences for tuning the surface chemistry and structural properties of GO. The observed effects on surface chemistry and structural propertiescan be ascribed to physical and chemical effectsof ion beam irradiation. The interaction of functional groups with H-atom was investigated using DFT andsemi-empirical (SE) approach. SE calculations revealed that the reduction of the epoxy group appears at H-atom energies below 1.5 eV. This work identifies ion beam irradiation as a preferable technique for selective removal of surface oxygen groups and structural modification of GO where the applied fluence can be used for tuning the degree of change.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
T1  - Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper
SP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_vinar_10833
ER  - 

@conference{
author = "Gloginjić, Marko and Mravik, Željko and Bajuk-Bogdanović, Danica V. and Olejniczak, Andrzej and Skuratov, Vladimir A. and Jovanović, Zoran M.",
year = "2021",
abstract = "Graphene oxide (GO) is a promising material for the futuregraphene-based electronics where the surface chemistry and structural properties of GO may play an important role. One of the unique methods with great potentialfor controllable modification of materials’ properties is the ion beam irradiation. In the present study, GO paper was irradiated with 15 keV proton- beam to a fluences from 5×10 16 to 2×1017 ionscm-2 , while Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray photoelectronspectroscopy (XPS) and Raman spectroscopy (RS)were used for the examination of surface chemistry and structural properties of the irradiated material. It was shown that proton beam irradiation leads to a partial reduction of GOwith the preferential removal of the alkoxy and epoxy groups. With the increasing fluence, the oxygen content from the XPS method and the intensity ratioof D and G Raman bandsboth showed decreasing trends. When oxygen content was compared to relative areas of specific functional groups and parameters of Raman peaks an interesting correlation was found that suggest optimal fluences for tuning the surface chemistry and structural properties of GO. The observed effects on surface chemistry and structural propertiescan be ascribed to physical and chemical effectsof ion beam irradiation. The interaction of functional groups with H-atom was investigated using DFT andsemi-empirical (SE) approach. SE calculations revealed that the reduction of the epoxy group appears at H-atom energies below 1.5 eV. This work identifies ion beam irradiation as a preferable technique for selective removal of surface oxygen groups and structural modification of GO where the applied fluence can be used for tuning the degree of change.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade",
title = "Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper",
pages = "73",
url = "https://hdl.handle.net/21.15107/rcub_vinar_10833"
}

Gloginjić, M., Mravik, Ž., Bajuk-Bogdanović, D. V., Olejniczak, A., Skuratov, V. A.,& Jovanović, Z. M.. (2021). Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade
Belgrade : Serbian Ceramic Society., 73.
https://hdl.handle.net/21.15107/rcub_vinar_10833

Gloginjić M, Mravik Ž, Bajuk-Bogdanović DV, Olejniczak A, Skuratov VA, Jovanović ZM. Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper. in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade. 2021;:73.
https://hdl.handle.net/21.15107/rcub_vinar_10833 .

Gloginjić, Marko, Mravik, Željko, Bajuk-Bogdanović, Danica V., Olejniczak, Andrzej, Skuratov, Vladimir A., Jovanović, Zoran M., "Surface chemistry and structural properties of proton-beam irradiated graphene oxide paper" in Advanced Ceramics and Application : 9th Serbian Ceramic Society Conference : program and the book of abstracts; September 20-21, 2021; Belgrade (2021):73,
https://hdl.handle.net/21.15107/rcub_vinar_10833 .

TY  - CONF
AU  - Gloginjić, Marko
AU  - Mravik, Željko
AU  - Bajuk-Bogdanović, Danica
AU  - Olejniczak, Andrzej
AU  - Skuratov, Vladimir A.
AU  - Pašti, Igor
AU  - Jovanović, Zoran
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12439
AB  - Surface oxygen groups may have a significant impact on the electrochemical charge storage properties of graphene oxide (GO). The presence of these groups on GO should be properly balanced so that electronic conductivity is optimized, while only the groups that are beneficial to capacitance are preserved. Ion beam irradiation can be identified as a technique where a controllable change of surface chemistry and structure of GO is possible through varying the energy and the fluence of an ion beam. In the present study, the influence of proton-beam irradiation on the surface chemistry and structural properties of GO paper was investigated. GO paper was irradiated with 15 keV proton-beam to fluences from 5×1016 to 2×1017 ions cm-2, while Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy (RS) were used for the analysis of the surface chemistry and structural properties. Results indicate increasing reduction of surface oxygen groups and the preferential removal of the alkoxy and epoxy groups as fluence increased. Desorption of these basal plane groups was outlined in our previous work as important for charge storage capacity, probably due to conductivity increase [1]. When oxygen content was compared to: 1) relative areas of specific functional groups from FTIR and XPS and 2) parameters of Raman peaks, an interesting correlation was found that suggest optimal fluences for tuning the surface chemistry and structural properties of GO. Modification of surface chemistry originates from the physical and chemical effects of ion beam irradiation which were also investigated theoretically. The interaction of functional groups with H-atom was investigated using DFT and semi-empirical (SE) approach. SE calculations revealed that the chemical reduction of the epoxy group appears at H-atom energies below 1.5 eV. Results indicate that ion-beam irradiation can be used for controllable modification of surface chemistry of GO where the applied fluence can be used for tuning the degree of change, which may have implications to electrochemical charge storage properties.
PB  - Belgrade : Faculty of Physical Chemistry
C3  - 4IMMSERA : The 4th International Conference on Materials Science for Energy Related Applications : Book of abstracts
T1  - Modification of surface oxygen groups of graphene oxide by ion beam irradiation for supercapacitor applications
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12439
ER  - 

@conference{
author = "Gloginjić, Marko and Mravik, Željko and Bajuk-Bogdanović, Danica and Olejniczak, Andrzej and Skuratov, Vladimir A. and Pašti, Igor and Jovanović, Zoran",
year = "2021",
abstract = "Surface oxygen groups may have a significant impact on the electrochemical charge storage properties of graphene oxide (GO). The presence of these groups on GO should be properly balanced so that electronic conductivity is optimized, while only the groups that are beneficial to capacitance are preserved. Ion beam irradiation can be identified as a technique where a controllable change of surface chemistry and structure of GO is possible through varying the energy and the fluence of an ion beam. In the present study, the influence of proton-beam irradiation on the surface chemistry and structural properties of GO paper was investigated. GO paper was irradiated with 15 keV proton-beam to fluences from 5×1016 to 2×1017 ions cm-2, while Fourier-transform infrared spectroscopy (ATR-FTIR), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy (RS) were used for the analysis of the surface chemistry and structural properties. Results indicate increasing reduction of surface oxygen groups and the preferential removal of the alkoxy and epoxy groups as fluence increased. Desorption of these basal plane groups was outlined in our previous work as important for charge storage capacity, probably due to conductivity increase [1]. When oxygen content was compared to: 1) relative areas of specific functional groups from FTIR and XPS and 2) parameters of Raman peaks, an interesting correlation was found that suggest optimal fluences for tuning the surface chemistry and structural properties of GO. Modification of surface chemistry originates from the physical and chemical effects of ion beam irradiation which were also investigated theoretically. The interaction of functional groups with H-atom was investigated using DFT and semi-empirical (SE) approach. SE calculations revealed that the chemical reduction of the epoxy group appears at H-atom energies below 1.5 eV. Results indicate that ion-beam irradiation can be used for controllable modification of surface chemistry of GO where the applied fluence can be used for tuning the degree of change, which may have implications to electrochemical charge storage properties.",
publisher = "Belgrade : Faculty of Physical Chemistry",
journal = "4IMMSERA : The 4th International Conference on Materials Science for Energy Related Applications : Book of abstracts",
title = "Modification of surface oxygen groups of graphene oxide by ion beam irradiation for supercapacitor applications",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12439"
}

Gloginjić, M., Mravik, Ž., Bajuk-Bogdanović, D., Olejniczak, A., Skuratov, V. A., Pašti, I.,& Jovanović, Z.. (2021). Modification of surface oxygen groups of graphene oxide by ion beam irradiation for supercapacitor applications. in 4IMMSERA : The 4th International Conference on Materials Science for Energy Related Applications : Book of abstracts
Belgrade : Faculty of Physical Chemistry..
https://hdl.handle.net/21.15107/rcub_vinar_12439

Gloginjić M, Mravik Ž, Bajuk-Bogdanović D, Olejniczak A, Skuratov VA, Pašti I, Jovanović Z. Modification of surface oxygen groups of graphene oxide by ion beam irradiation for supercapacitor applications. in 4IMMSERA : The 4th International Conference on Materials Science for Energy Related Applications : Book of abstracts. 2021;.
https://hdl.handle.net/21.15107/rcub_vinar_12439 .

Gloginjić, Marko, Mravik, Željko, Bajuk-Bogdanović, Danica, Olejniczak, Andrzej, Skuratov, Vladimir A., Pašti, Igor, Jovanović, Zoran, "Modification of surface oxygen groups of graphene oxide by ion beam irradiation for supercapacitor applications" in 4IMMSERA : The 4th International Conference on Materials Science for Energy Related Applications : Book of abstracts (2021),
https://hdl.handle.net/21.15107/rcub_vinar_12439 .

TY  - CONF
AU  - Mravik, Željko
AU  - Gloginjić, Marko
AU  - Bajuk-Bogdanović, Danica
AU  - Nikolić, Maria Vesna
AU  - Olejniczak, Andrzej
AU  - Gavrilov, Nemanja
AU  - Jovanović, Zoran
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12489
AB  - Graphene oxide (GO) has emerged as a promising material for electrochemical charge storage due to its high capacitance originating from all-surface morphology and different oxygen groups that participate in redox reactions. Ion beam irradiation can be identified as a technique where a controllable change of surface chemistry and structure of GO is possible through varying the energy and the fluence of an ion beam. In the present study, the influence of keV-energy ion-beam irradiation on the surface chemistry, structural and electrical properties of GO paper were investigated. The results of X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy showed an increasing reduction of GO and the preferential removal of the alkoxy and epoxy groups with increasing fluence. Raman analysis showed that there is clear correlation between oxygen content and structural parameters of the irradiated GO. Electric properties of ion beam irradiated GO papers were investigated using the solid-state electrochemical impedance spectroscopy (EIS) and compared to the effects of thermal treatment. With irradiation, lower resistivity of GO papers was observed with fluencies up to 1 × 10 16 ions/cm 2 proving that desorption of basal plane oxygen groups is beneficial for improvement of electric characteristics of material. At higher fluence, a higher defect concentration resulted in an increase of resistivity of the irradiated samples. Additionally, EIS results outlined a different behavior of ion beam irradiated and thermally treated samples (capacitor vs. resistor, respectively), originating from the different extent of modification (ion beam irradiation – modification of few hundred nm and thermal treatment – bulk modification).
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts
T1  - Surface, structural and electric properties of ion beam irradiated graphene oxide papers
SP  - 38
EP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_vinar_12489
ER  - 

@conference{
author = "Mravik, Željko and Gloginjić, Marko and Bajuk-Bogdanović, Danica and Nikolić, Maria Vesna and Olejniczak, Andrzej and Gavrilov, Nemanja and Jovanović, Zoran",
year = "2021",
abstract = "Graphene oxide (GO) has emerged as a promising material for electrochemical charge storage due to its high capacitance originating from all-surface morphology and different oxygen groups that participate in redox reactions. Ion beam irradiation can be identified as a technique where a controllable change of surface chemistry and structure of GO is possible through varying the energy and the fluence of an ion beam. In the present study, the influence of keV-energy ion-beam irradiation on the surface chemistry, structural and electrical properties of GO paper were investigated. The results of X-ray photoelectron spectroscopy and Fourier-transform infrared spectroscopy showed an increasing reduction of GO and the preferential removal of the alkoxy and epoxy groups with increasing fluence. Raman analysis showed that there is clear correlation between oxygen content and structural parameters of the irradiated GO. Electric properties of ion beam irradiated GO papers were investigated using the solid-state electrochemical impedance spectroscopy (EIS) and compared to the effects of thermal treatment. With irradiation, lower resistivity of GO papers was observed with fluencies up to 1 × 10 16 ions/cm 2 proving that desorption of basal plane oxygen groups is beneficial for improvement of electric characteristics of material. At higher fluence, a higher defect concentration resulted in an increase of resistivity of the irradiated samples. Additionally, EIS results outlined a different behavior of ion beam irradiated and thermally treated samples (capacitor vs. resistor, respectively), originating from the different extent of modification (ion beam irradiation – modification of few hundred nm and thermal treatment – bulk modification).",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts",
title = "Surface, structural and electric properties of ion beam irradiated graphene oxide papers",
pages = "38-38",
url = "https://hdl.handle.net/21.15107/rcub_vinar_12489"
}

Mravik, Ž., Gloginjić, M., Bajuk-Bogdanović, D., Nikolić, M. V., Olejniczak, A., Gavrilov, N.,& Jovanović, Z.. (2021). Surface, structural and electric properties of ion beam irradiated graphene oxide papers. in 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts
Belgrade : Institute of Technical Sciences of SASA., 38-38.
https://hdl.handle.net/21.15107/rcub_vinar_12489

Mravik Ž, Gloginjić M, Bajuk-Bogdanović D, Nikolić MV, Olejniczak A, Gavrilov N, Jovanović Z. Surface, structural and electric properties of ion beam irradiated graphene oxide papers. in 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts. 2021;:38-38.
https://hdl.handle.net/21.15107/rcub_vinar_12489 .

Mravik, Željko, Gloginjić, Marko, Bajuk-Bogdanović, Danica, Nikolić, Maria Vesna, Olejniczak, Andrzej, Gavrilov, Nemanja, Jovanović, Zoran, "Surface, structural and electric properties of ion beam irradiated graphene oxide papers" in 19th Young Researchers’ Conference - Materials Science and Engineering : Program and the Book of Abstracts (2021):38-38,
https://hdl.handle.net/21.15107/rcub_vinar_12489 .