TY  - JOUR
AU  - Lazarević, Zorica
AU  - Milutinović, Aleksandra
AU  - Anđelković, Ljubica
AU  - Petrović, Milica
AU  - Hadžić, Branka
AU  - Romčević, Maja
AU  - Trajić, Jelena
AU  - Romčević, Nebojša
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7212
AB  - ingle phase cobalt ferrite (CoFe2O4) with nanoparticles of similar sizes (15.7-19 nm) was obtained by different synthesis methods: coprecipitation, ultrasonically assisted coprecipitation, coprecipitation followed by mechanochemical treatment, microemulsion and microwave assisted hydrothermal synthesis. The obtained CoFe2O4 samples have been studied using a variety of characterization techniques: X-ray diffraction (XRD), Raman spectroscopy, far infrared (FIR) reflectivity and attenuated total reflectance (ATR) in combination with Fourier-transform infrared (FTIR) spectroscopy in mid IR spectra. Different methods of synthesis produced nanoparticles with different lattice constants, internal stresses and different cation inversion values. This is confirmed in the subtle changes in the Raman and IR spectra of different CoFe2O4 nano-powders. The Raman spectra of CoFe2O4 were compared with the spectra of other ferrites and some cubic oxide spinels in an attempt to evaluate the contribution of tetrahedral and octahedral oscillations in certain Raman modes.
AB  - Монофазни кобалт ферит са наночестицама сличних величина (15,7-19  нанометара) добијен је различитим методама синтезе: копреципитацијом,  ултразвучно потпомогнутом копреципитацијом, копреципитацијом праћеном  механохемијском синтезом, микроемулзијом и микроталасном хидротермалном  синтезом. Добијени узорци кобалт ферита су проучавани коришћењем различитих  техника карактеризације: дифракцијом рендгенских зрака на праху, Раман спектроскопијом, рефлексијом у далекој инфра-црвеној области (ИЦ) и методом  апсорпције при вишеструкој тоталној рефлексији у комбинацији са инфра-црвеном  спектроскопијом (АТР-ИЦ) у средњој инфра црвеној области. Различитим методама  синтезе добијене су наночестице са различитим константама решетке, унутрашњим  напрезањима и различитим вредностима инверзије катјона. Ово је потврђено у  суптилним променама у Раман и ИЦ спектрима различитих нано-прахова кобалт  ферита. Раман спектри кобалт ферита упоређени су са спектрима других ферита и  неких кубних оксидних спинела у покушају да се процени утицај удела  тетраедарских и октаедарских осцилација у одређеним Раман модовима.
PB  - Association for ETRAN Society
T2  - Science of Sintering
T1  - Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels
T1  - Kарактеризација наночестица кобалт ферита добијених  различитим методама синтезе и поређење са Рамановим спектрима  других ферита и неких кубичних оксидних спинела
DO  - 10.2298/SOS230322035L
ER  - 

@article{
author = "Lazarević, Zorica and Milutinović, Aleksandra and Anđelković, Ljubica and Petrović, Milica and Hadžić, Branka and Romčević, Maja and Trajić, Jelena and Romčević, Nebojša",
year = "2023",
abstract = "ingle phase cobalt ferrite (CoFe2O4) with nanoparticles of similar sizes (15.7-19 nm) was obtained by different synthesis methods: coprecipitation, ultrasonically assisted coprecipitation, coprecipitation followed by mechanochemical treatment, microemulsion and microwave assisted hydrothermal synthesis. The obtained CoFe2O4 samples have been studied using a variety of characterization techniques: X-ray diffraction (XRD), Raman spectroscopy, far infrared (FIR) reflectivity and attenuated total reflectance (ATR) in combination with Fourier-transform infrared (FTIR) spectroscopy in mid IR spectra. Different methods of synthesis produced nanoparticles with different lattice constants, internal stresses and different cation inversion values. This is confirmed in the subtle changes in the Raman and IR spectra of different CoFe2O4 nano-powders. The Raman spectra of CoFe2O4 were compared with the spectra of other ferrites and some cubic oxide spinels in an attempt to evaluate the contribution of tetrahedral and octahedral oscillations in certain Raman modes., Монофазни кобалт ферит са наночестицама сличних величина (15,7-19  нанометара) добијен је различитим методама синтезе: копреципитацијом,  ултразвучно потпомогнутом копреципитацијом, копреципитацијом праћеном  механохемијском синтезом, микроемулзијом и микроталасном хидротермалном  синтезом. Добијени узорци кобалт ферита су проучавани коришћењем различитих  техника карактеризације: дифракцијом рендгенских зрака на праху, Раман спектроскопијом, рефлексијом у далекој инфра-црвеној области (ИЦ) и методом  апсорпције при вишеструкој тоталној рефлексији у комбинацији са инфра-црвеном  спектроскопијом (АТР-ИЦ) у средњој инфра црвеној области. Различитим методама  синтезе добијене су наночестице са различитим константама решетке, унутрашњим  напрезањима и различитим вредностима инверзије катјона. Ово је потврђено у  суптилним променама у Раман и ИЦ спектрима различитих нано-прахова кобалт  ферита. Раман спектри кобалт ферита упоређени су са спектрима других ферита и  неких кубних оксидних спинела у покушају да се процени утицај удела  тетраедарских и октаедарских осцилација у одређеним Раман модовима.",
publisher = "Association for ETRAN Society",
journal = "Science of Sintering",
title = "Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels, Kарактеризација наночестица кобалт ферита добијених  различитим методама синтезе и поређење са Рамановим спектрима  других ферита и неких кубичних оксидних спинела",
doi = "10.2298/SOS230322035L"
}

Lazarević, Z., Milutinović, A., Anđelković, L., Petrović, M., Hadžić, B., Romčević, M., Trajić, J.,& Romčević, N.. (2023). Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels. in Science of Sintering
Association for ETRAN Society..
https://doi.org/10.2298/SOS230322035L

Lazarević Z, Milutinović A, Anđelković L, Petrović M, Hadžić B, Romčević M, Trajić J, Romčević N. Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels. in Science of Sintering. 2023;.
doi:10.2298/SOS230322035L .

Lazarević, Zorica, Milutinović, Aleksandra, Anđelković, Ljubica, Petrović, Milica, Hadžić, Branka, Romčević, Maja, Trajić, Jelena, Romčević, Nebojša, "Characterization of cobalt ferrite nanoparticles obtained by various synthesis methods and comparison with the Raman spectra of other ferrites and some cubic oxide spinels" in Science of Sintering (2023),
https://doi.org/10.2298/SOS230322035L . .

TY  - JOUR
AU  - Pagnacco, Maja
AU  - Simović-Pavlović, Marina
AU  - Grujić, Dušan
AU  - Vasiljević, Darko
AU  - Bokić, Bojana
AU  - Mouchet, Sébastien R.
AU  - Verbiest, Thierry
AU  - Caudano, Yves
AU  - Kolarić, Branko
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7186
AB  - This paper presents a holographic study of the phase transition that occurs in a nonequilibrium system. The chosen model is a unique Briggs–Rauscher oscillatory reaction that, first, follows a deterministic pattern (namely, an oscillatory behavior) and, later, exhibits a phase transition occurring randomly and without any known link with the previous deterministic state. The presented research opens up a new way to reveal complex chemical phenomena and dynamics in situ, without disturbing significantly the nonequilibrium system and its pathways. Simultaneously, it unfolds a new route for applications of interferometric methods in different areas of materials science. Under the applied conditions, we show that the holographic method is more sensitive to the phase transition dynamics than the commonly used potentiometric method.
PB  - American Chemical Society (ACS)
T2  - The Journal of Physical Chemistry C
T1  - Stochastic Phase Transition Dynamics in Nonequilibrium System: Holographic Study
VL  - 127
IS  - 22
SP  - 10821
EP  - 10825
DO  - 10.1021/acs.jpcc.3c01831
ER  - 

@article{
author = "Pagnacco, Maja and Simović-Pavlović, Marina and Grujić, Dušan and Vasiljević, Darko and Bokić, Bojana and Mouchet, Sébastien R. and Verbiest, Thierry and Caudano, Yves and Kolarić, Branko",
year = "2023",
abstract = "This paper presents a holographic study of the phase transition that occurs in a nonequilibrium system. The chosen model is a unique Briggs–Rauscher oscillatory reaction that, first, follows a deterministic pattern (namely, an oscillatory behavior) and, later, exhibits a phase transition occurring randomly and without any known link with the previous deterministic state. The presented research opens up a new way to reveal complex chemical phenomena and dynamics in situ, without disturbing significantly the nonequilibrium system and its pathways. Simultaneously, it unfolds a new route for applications of interferometric methods in different areas of materials science. Under the applied conditions, we show that the holographic method is more sensitive to the phase transition dynamics than the commonly used potentiometric method.",
publisher = "American Chemical Society (ACS)",
journal = "The Journal of Physical Chemistry C",
title = "Stochastic Phase Transition Dynamics in Nonequilibrium System: Holographic Study",
volume = "127",
number = "22",
pages = "10821-10825",
doi = "10.1021/acs.jpcc.3c01831"
}

Pagnacco, M., Simović-Pavlović, M., Grujić, D., Vasiljević, D., Bokić, B., Mouchet, S. R., Verbiest, T., Caudano, Y.,& Kolarić, B.. (2023). Stochastic Phase Transition Dynamics in Nonequilibrium System: Holographic Study. in The Journal of Physical Chemistry C
American Chemical Society (ACS)., 127(22), 10821-10825.
https://doi.org/10.1021/acs.jpcc.3c01831

Pagnacco M, Simović-Pavlović M, Grujić D, Vasiljević D, Bokić B, Mouchet SR, Verbiest T, Caudano Y, Kolarić B. Stochastic Phase Transition Dynamics in Nonequilibrium System: Holographic Study. in The Journal of Physical Chemistry C. 2023;127(22):10821-10825.
doi:10.1021/acs.jpcc.3c01831 .

Pagnacco, Maja, Simović-Pavlović, Marina, Grujić, Dušan, Vasiljević, Darko, Bokić, Bojana, Mouchet, Sébastien R., Verbiest, Thierry, Caudano, Yves, Kolarić, Branko, "Stochastic Phase Transition Dynamics in Nonequilibrium System: Holographic Study" in The Journal of Physical Chemistry C, 127, no. 22 (2023):10821-10825,
https://doi.org/10.1021/acs.jpcc.3c01831 . .

TY  - JOUR
AU  - Tomašević-Ilić, Tijana
AU  - Škoro, Nikola
AU  - Jovanović, Đorđe
AU  - Puač, Nevena
AU  - Spasenović, Marko
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7210
AB  - Graphene films prepared from solution and deposited by Langmuir–Blodgett self-assembly technique (LBSA) were treated with radio-frequency (13.56 MHz) nitrogen plasma in order to investigate the influence of the time of nitrogen plasma exposure on the work function, sheet resistance, and surface morphology of LBSA graphene films. Kelvin probe force microscopy and sheet resistance measurements confirm nitrogen functionalization of our films, with the Fermi level shifting in a direction that indicates binding to a pyridinic and/or pyrrolic site. Upon 1 min of nitrogen plasma exposure, the sheet resistance decreases and there is no obvious difference in film morphology. However, plasma exposure longer than 5 min leads to the removal of graphene flakes and degradation of graphene films, in turn, affecting the flake connectivity and increasing film resistance. We show that by changing the exposure time, we can control the work function and decrease sheet resistance, without affecting surface morphology. Controllability of the plasma technique has an advantage for graphene functionalization over conventional doping techniques such as chemical drop-casting. It allows for the controllable tuning of the work function, surface morphology, and sheet resistance of LBSA graphene films, which is substantial for applications in various optoelectronic devices.
PB  - MDPI
T2  - Condensed Matter
T1  - Plasma-Assisted Nitrogen Doping of Langmuir–Blodgett Self-Assembled Graphene Films
VL  - 8
IS  - 2
SP  - 34
DO  - 10.3390/condmat8020034
ER  - 

@article{
author = "Tomašević-Ilić, Tijana and Škoro, Nikola and Jovanović, Đorđe and Puač, Nevena and Spasenović, Marko",
year = "2023",
abstract = "Graphene films prepared from solution and deposited by Langmuir–Blodgett self-assembly technique (LBSA) were treated with radio-frequency (13.56 MHz) nitrogen plasma in order to investigate the influence of the time of nitrogen plasma exposure on the work function, sheet resistance, and surface morphology of LBSA graphene films. Kelvin probe force microscopy and sheet resistance measurements confirm nitrogen functionalization of our films, with the Fermi level shifting in a direction that indicates binding to a pyridinic and/or pyrrolic site. Upon 1 min of nitrogen plasma exposure, the sheet resistance decreases and there is no obvious difference in film morphology. However, plasma exposure longer than 5 min leads to the removal of graphene flakes and degradation of graphene films, in turn, affecting the flake connectivity and increasing film resistance. We show that by changing the exposure time, we can control the work function and decrease sheet resistance, without affecting surface morphology. Controllability of the plasma technique has an advantage for graphene functionalization over conventional doping techniques such as chemical drop-casting. It allows for the controllable tuning of the work function, surface morphology, and sheet resistance of LBSA graphene films, which is substantial for applications in various optoelectronic devices.",
publisher = "MDPI",
journal = "Condensed Matter",
title = "Plasma-Assisted Nitrogen Doping of Langmuir–Blodgett Self-Assembled Graphene Films",
volume = "8",
number = "2",
pages = "34",
doi = "10.3390/condmat8020034"
}

Tomašević-Ilić, T., Škoro, N., Jovanović, Đ., Puač, N.,& Spasenović, M.. (2023). Plasma-Assisted Nitrogen Doping of Langmuir–Blodgett Self-Assembled Graphene Films. in Condensed Matter
MDPI., 8(2), 34.
https://doi.org/10.3390/condmat8020034

Tomašević-Ilić T, Škoro N, Jovanović Đ, Puač N, Spasenović M. Plasma-Assisted Nitrogen Doping of Langmuir–Blodgett Self-Assembled Graphene Films. in Condensed Matter. 2023;8(2):34.
doi:10.3390/condmat8020034 .

Tomašević-Ilić, Tijana, Škoro, Nikola, Jovanović, Đorđe, Puač, Nevena, Spasenović, Marko, "Plasma-Assisted Nitrogen Doping of Langmuir–Blodgett Self-Assembled Graphene Films" in Condensed Matter, 8, no. 2 (2023):34,
https://doi.org/10.3390/condmat8020034 . .

TY  - JOUR
AU  - Jovanović, Djordje
AU  - Petrović, Miloš
AU  - Tomašević-Ilić, Tijana
AU  - Matković, Aleksandar
AU  - Bokalič, Matevž
AU  - Spasenović, Marko
AU  - Rogdakis, Konstantinos
AU  - Kymakis, Emmannuel
AU  - Knežević, Dragan
AU  - Cina, Lucio
AU  - Gajić, Radoš
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6491
AB  - A long operational lifetime is required for the use of solar cells in real-life photovoltaic applications. The optimization of operational lifetimes is achieved through understanding the inherent degradation phenomena in solar cells. In this study, graphene/Si Schottky-junction solar cells were produced, utilizing liquid-phase-exfoliated graphene as an active surface. The operational and interface stability of these solar cells over a period of 5 years in ambient conditions (following ISOS-D protocols: dark storage/shelf life) was examined, and the origin of their degradation was reported. It was found that the dominant degradation mechanism could be attributed to the degradation of silver contacts. This was indicated by a decrease in shunt resistance, an increase in the ideality factor (due to a higher carrier recombination), and a constant defect density in graphene films for up to 4 years. Measurements across the solar cell's active area during the 5-year period revealed neither significant spatial inhomogeneity, nor shunt channel defects.
PB  - Elsevier
T2  - Solar Energy Materials and Solar Cells
T1  - Long-term stability of graphene/c-Si Schottky-junction solar cells
VL  - 258
SP  - 112414
DO  - 10.1016/j.solmat.2023.112414
ER  - 

@article{
author = "Jovanović, Djordje and Petrović, Miloš and Tomašević-Ilić, Tijana and Matković, Aleksandar and Bokalič, Matevž and Spasenović, Marko and Rogdakis, Konstantinos and Kymakis, Emmannuel and Knežević, Dragan and Cina, Lucio and Gajić, Radoš",
year = "2023",
abstract = "A long operational lifetime is required for the use of solar cells in real-life photovoltaic applications. The optimization of operational lifetimes is achieved through understanding the inherent degradation phenomena in solar cells. In this study, graphene/Si Schottky-junction solar cells were produced, utilizing liquid-phase-exfoliated graphene as an active surface. The operational and interface stability of these solar cells over a period of 5 years in ambient conditions (following ISOS-D protocols: dark storage/shelf life) was examined, and the origin of their degradation was reported. It was found that the dominant degradation mechanism could be attributed to the degradation of silver contacts. This was indicated by a decrease in shunt resistance, an increase in the ideality factor (due to a higher carrier recombination), and a constant defect density in graphene films for up to 4 years. Measurements across the solar cell's active area during the 5-year period revealed neither significant spatial inhomogeneity, nor shunt channel defects.",
publisher = "Elsevier",
journal = "Solar Energy Materials and Solar Cells",
title = "Long-term stability of graphene/c-Si Schottky-junction solar cells",
volume = "258",
pages = "112414",
doi = "10.1016/j.solmat.2023.112414"
}

Jovanović, D., Petrović, M., Tomašević-Ilić, T., Matković, A., Bokalič, M., Spasenović, M., Rogdakis, K., Kymakis, E., Knežević, D., Cina, L.,& Gajić, R.. (2023). Long-term stability of graphene/c-Si Schottky-junction solar cells. in Solar Energy Materials and Solar Cells
Elsevier., 258, 112414.
https://doi.org/10.1016/j.solmat.2023.112414

Jovanović D, Petrović M, Tomašević-Ilić T, Matković A, Bokalič M, Spasenović M, Rogdakis K, Kymakis E, Knežević D, Cina L, Gajić R. Long-term stability of graphene/c-Si Schottky-junction solar cells. in Solar Energy Materials and Solar Cells. 2023;258:112414.
doi:10.1016/j.solmat.2023.112414 .

Jovanović, Djordje, Petrović, Miloš, Tomašević-Ilić, Tijana, Matković, Aleksandar, Bokalič, Matevž, Spasenović, Marko, Rogdakis, Konstantinos, Kymakis, Emmannuel, Knežević, Dragan, Cina, Lucio, Gajić, Radoš, "Long-term stability of graphene/c-Si Schottky-junction solar cells" in Solar Energy Materials and Solar Cells, 258 (2023):112414,
https://doi.org/10.1016/j.solmat.2023.112414 . .

TY  - JOUR
AU  - Jovanović, Djordje
AU  - Petrović, Miloš
AU  - Tomašević-Ilić, Tijana
AU  - Matković, Aleksandar
AU  - Bokalič, Matevž
AU  - Spasenović, Marko
AU  - Rogdakis, Konstantinos
AU  - Kymakis, Emmannuel
AU  - Knežević, Dragan
AU  - Cina, Lucio
AU  - Gajić, Radoš
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6490
AB  - A long operational lifetime is required for the use of solar cells in real-life photovoltaic applications. The optimization of operational lifetimes is achieved through understanding the inherent degradation phenomena in solar cells. In this study, graphene/Si Schottky-junction solar cells were produced, utilizing liquid-phase-exfoliated graphene as an active surface. The operational and interface stability of these solar cells over a period of 5 years in ambient conditions (following ISOS-D protocols: dark storage/shelf life) was examined, and the origin of their degradation was reported. It was found that the dominant degradation mechanism could be attributed to the degradation of silver contacts. This was indicated by a decrease in shunt resistance, an increase in the ideality factor (due to a higher carrier recombination), and a constant defect density in graphene films for up to 4 years. Measurements across the solar cell's active area during the 5-year period revealed neither significant spatial inhomogeneity, nor shunt channel defects.
PB  - Elsevier
T2  - Solar Energy Materials and Solar Cells
T1  - Long-term stability of graphene/c-Si Schottky-junction solar cells
VL  - 258
SP  - 112414
DO  - 10.1016/j.solmat.2023.112414
ER  - 

@article{
author = "Jovanović, Djordje and Petrović, Miloš and Tomašević-Ilić, Tijana and Matković, Aleksandar and Bokalič, Matevž and Spasenović, Marko and Rogdakis, Konstantinos and Kymakis, Emmannuel and Knežević, Dragan and Cina, Lucio and Gajić, Radoš",
year = "2023",
abstract = "A long operational lifetime is required for the use of solar cells in real-life photovoltaic applications. The optimization of operational lifetimes is achieved through understanding the inherent degradation phenomena in solar cells. In this study, graphene/Si Schottky-junction solar cells were produced, utilizing liquid-phase-exfoliated graphene as an active surface. The operational and interface stability of these solar cells over a period of 5 years in ambient conditions (following ISOS-D protocols: dark storage/shelf life) was examined, and the origin of their degradation was reported. It was found that the dominant degradation mechanism could be attributed to the degradation of silver contacts. This was indicated by a decrease in shunt resistance, an increase in the ideality factor (due to a higher carrier recombination), and a constant defect density in graphene films for up to 4 years. Measurements across the solar cell's active area during the 5-year period revealed neither significant spatial inhomogeneity, nor shunt channel defects.",
publisher = "Elsevier",
journal = "Solar Energy Materials and Solar Cells",
title = "Long-term stability of graphene/c-Si Schottky-junction solar cells",
volume = "258",
pages = "112414",
doi = "10.1016/j.solmat.2023.112414"
}

Jovanović, D., Petrović, M., Tomašević-Ilić, T., Matković, A., Bokalič, M., Spasenović, M., Rogdakis, K., Kymakis, E., Knežević, D., Cina, L.,& Gajić, R.. (2023). Long-term stability of graphene/c-Si Schottky-junction solar cells. in Solar Energy Materials and Solar Cells
Elsevier., 258, 112414.
https://doi.org/10.1016/j.solmat.2023.112414

Jovanović D, Petrović M, Tomašević-Ilić T, Matković A, Bokalič M, Spasenović M, Rogdakis K, Kymakis E, Knežević D, Cina L, Gajić R. Long-term stability of graphene/c-Si Schottky-junction solar cells. in Solar Energy Materials and Solar Cells. 2023;258:112414.
doi:10.1016/j.solmat.2023.112414 .

Jovanović, Djordje, Petrović, Miloš, Tomašević-Ilić, Tijana, Matković, Aleksandar, Bokalič, Matevž, Spasenović, Marko, Rogdakis, Konstantinos, Kymakis, Emmannuel, Knežević, Dragan, Cina, Lucio, Gajić, Radoš, "Long-term stability of graphene/c-Si Schottky-junction solar cells" in Solar Energy Materials and Solar Cells, 258 (2023):112414,
https://doi.org/10.1016/j.solmat.2023.112414 . .

TY  - JOUR
AU  - Kremenović, Aleksandar
AU  - Grujić-Brojčin, Mirjana
AU  - Tomić, Nataša
AU  - Lazović, Vladimir
AU  - Bajuk-Bogdanović, Danica
AU  - Krstić, Jugoslav
AU  - Šćepanović, Maja
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5424
AB  - A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results for both anatase and brookite. The experimental Raman spectra of all the samples in the region 100-200 cm-1are dominated by a strong feature primarily composed of the most intense modes of anatase (Eg ) and brookite (A 1g ). The anatase crystallite sizes of 14-17 nm, estimated by XRPD, suggest the application of the phonon confinement model (PCM) for the analysis of the anatase Eg mode, whereas the relatively large brookite crystallite size (27-29 nm) does not imply the use of the PCM for the brookite A 1g mode. Superposition of the anatase Eg mode profile, calculated by the PCM, and the Lorentzian shape of the brookite A 1g mode provide an appropriate simulation of the change in the dominant Raman feature in the spectra of TiO2-based nanocomposites with carbon. Raman spectra measured in the high-frequency range (1000-2000 cm-1) provide information on carbon in the investigated nanocomposite materials. The results from field-emission scanning electron microscope (SEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy and nitrogen physisorption measurements support the XRPD and Raman results.
PB  - UK : International Union of Crystallography
T2  - Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
T1  - Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis
VL  - 78
SP  - 214
EP  - 222
DO  - 10.1107/S2052520622001731
ER  - 

@article{
author = "Kremenović, Aleksandar and Grujić-Brojčin, Mirjana and Tomić, Nataša and Lazović, Vladimir and Bajuk-Bogdanović, Danica and Krstić, Jugoslav and Šćepanović, Maja",
year = "2022",
abstract = "A size-strain line-broadening analysis of the XRPD patterns and Raman spectra for two anatase/brookite (TiO2)-based nanocomposites with carbon (C) was carried out and the results compared with those of a similar sample free of carbon. The crystal structures and microstructures of anatase and brookite, as well as their relative abundance ratio, have been refined from XRPD data by the Rietveld method (the low amount of carbon is neglected). The XRPD size-strain analysis resulted in reliable structure and microstructure results for both anatase and brookite. The experimental Raman spectra of all the samples in the region 100-200 cm-1are dominated by a strong feature primarily composed of the most intense modes of anatase (Eg ) and brookite (A 1g ). The anatase crystallite sizes of 14-17 nm, estimated by XRPD, suggest the application of the phonon confinement model (PCM) for the analysis of the anatase Eg mode, whereas the relatively large brookite crystallite size (27-29 nm) does not imply the use of the PCM for the brookite A 1g mode. Superposition of the anatase Eg mode profile, calculated by the PCM, and the Lorentzian shape of the brookite A 1g mode provide an appropriate simulation of the change in the dominant Raman feature in the spectra of TiO2-based nanocomposites with carbon. Raman spectra measured in the high-frequency range (1000-2000 cm-1) provide information on carbon in the investigated nanocomposite materials. The results from field-emission scanning electron microscope (SEM), thermogravimetric analysis (TGA), Fourier transform infrared (FTIR) spectroscopy and nitrogen physisorption measurements support the XRPD and Raman results.",
publisher = "UK : International Union of Crystallography",
journal = "Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials",
title = "Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis",
volume = "78",
pages = "214-222",
doi = "10.1107/S2052520622001731"
}

Kremenović, A., Grujić-Brojčin, M., Tomić, N., Lazović, V., Bajuk-Bogdanović, D., Krstić, J.,& Šćepanović, M.. (2022). Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis. in Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials
UK : International Union of Crystallography., 78, 214-222.
https://doi.org/10.1107/S2052520622001731

Kremenović A, Grujić-Brojčin M, Tomić N, Lazović V, Bajuk-Bogdanović D, Krstić J, Šćepanović M. Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis. in Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials. 2022;78:214-222.
doi:10.1107/S2052520622001731 .

Kremenović, Aleksandar, Grujić-Brojčin, Mirjana, Tomić, Nataša, Lazović, Vladimir, Bajuk-Bogdanović, Danica, Krstić, Jugoslav, Šćepanović, Maja, "Size-strain line-broadening analysis of anatase/brookite (TiO2)-based nanocomposites with carbon (C): XRPD and Raman spectroscopic analysis" in Acta Crystallographica Section B: Structural Science, Crystal Engineering and Materials, 78 (2022):214-222,
https://doi.org/10.1107/S2052520622001731 . .