TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Stan, George E.
AU  - Socol, Gabriel
AU  - Mihailescu, Andreea
AU  - Mihailescu, Ion N.
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketic, Zdravko
AU  - Provatas, George
AU  - Jaksic, Milko
AU  - Janaćković, Đorđe
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4996
AB  - Anodization was used to obtain a nanotubular TiO2 photoanode on F-SnO2 glass. Subsequent annealing in the CH4 atmosphere promoted the C-doping and improved the crystallinity of the TiO2 nanotubes. The pulsed laser deposition was applied to cover the nanotubes with Bi2O3, serving as a hole transport material. X-ray photoelectron spectroscopy analyses of the doped samples reveal a shift in the valence band's maximum position towards lower binding energy as compared to those observed for the undoped samples (annealed in the air). The doping positively affects the absorption by shifting the absorption edge to 567 nm. I-V measurements under illumination show that the C-doping of TiO2 increases the current density following the absorbance results. The highest open circuit voltage was reached for the samples with the 300 degrees C-deposited Bi2O3 layer, pointing to better quality of the p-n junction, hence of the contact between Bi2O3 and TiO2. This in situ annealing provided the formation of close contact between Bi2O3 and TiO2, which enabled a faster charge transport as compared to the contact obtained with no annealing or even with post annealing.
T2  - Ceramics International
T1  - C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application
EP  - 4657
IS  - 4
SP  - 4649
VL  - 48
DO  - 10.1016/j.ceramint.2021.10.251
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Stan, George E. and Socol, Gabriel and Mihailescu, Andreea and Mihailescu, Ion N. and Veltruska, Katerina and Matolin, Vladimir and Siketic, Zdravko and Provatas, George and Jaksic, Milko and Janaćković, Đorđe",
year = "2022",
abstract = "Anodization was used to obtain a nanotubular TiO2 photoanode on F-SnO2 glass. Subsequent annealing in the CH4 atmosphere promoted the C-doping and improved the crystallinity of the TiO2 nanotubes. The pulsed laser deposition was applied to cover the nanotubes with Bi2O3, serving as a hole transport material. X-ray photoelectron spectroscopy analyses of the doped samples reveal a shift in the valence band's maximum position towards lower binding energy as compared to those observed for the undoped samples (annealed in the air). The doping positively affects the absorption by shifting the absorption edge to 567 nm. I-V measurements under illumination show that the C-doping of TiO2 increases the current density following the absorbance results. The highest open circuit voltage was reached for the samples with the 300 degrees C-deposited Bi2O3 layer, pointing to better quality of the p-n junction, hence of the contact between Bi2O3 and TiO2. This in situ annealing provided the formation of close contact between Bi2O3 and TiO2, which enabled a faster charge transport as compared to the contact obtained with no annealing or even with post annealing.",
journal = "Ceramics International",
title = "C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application",
pages = "4657-4649",
number = "4",
volume = "48",
doi = "10.1016/j.ceramint.2021.10.251"
}

Bjelajac, A., Petrović, R., Stan, G. E., Socol, G., Mihailescu, A., Mihailescu, I. N., Veltruska, K., Matolin, V., Siketic, Z., Provatas, G., Jaksic, M.,& Janaćković, Đ.. (2022). C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application. in Ceramics International, 48(4), 4649-4657.
https://doi.org/10.1016/j.ceramint.2021.10.251

Bjelajac A, Petrović R, Stan GE, Socol G, Mihailescu A, Mihailescu IN, Veltruska K, Matolin V, Siketic Z, Provatas G, Jaksic M, Janaćković Đ. C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application. in Ceramics International. 2022;48(4):4649-4657.
doi:10.1016/j.ceramint.2021.10.251 .

Bjelajac, Anđelika, Petrović, Rada, Stan, George E., Socol, Gabriel, Mihailescu, Andreea, Mihailescu, Ion N., Veltruska, Katerina, Matolin, Vladimir, Siketic, Zdravko, Provatas, George, Jaksic, Milko, Janaćković, Đorđe, "C-doped TiO2 nanotubes with pulsed laser deposited Bi2O3 films for photovoltaic application" in Ceramics International, 48, no. 4 (2022):4649-4657,
https://doi.org/10.1016/j.ceramint.2021.10.251 . .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketić, Zdravko
AU  - Provatas, Georgios
AU  - Jakšić, Milko
AU  - Stan, George
AU  - Socol, Gabriel
AU  - Mihailescu, Ion
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2022
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5173
AB  - Pure Ti films deposited by radio-frequency magnetron sputtering on FTO glass were anodized to fabricate TiO2 nanotubes (NTs) arrays. The TiO2 NTs/FTO samples were sintered at 450, 550 and 630°C, in ambient air. The thermal treatment did not influence the crystal phase composition, preserving in all cases the anatase single phase. As expected, the crystalline anatase quality improved with the annealing temperature. Nevertheless, slight differences in nanotubular morphology, such as the appearance of grains inside the walls, were observed in the case of the sample sintered at 630°C. Chemical analysis by X-ray Photoelectron Spectroscopy of annealed samples revealed the presence of Sn inside TiO2 NTs, due to diffusion of Sn from the substrate to TiO2. For the substrate was used FTO glass whose top layer consists of SnO2 doped with F. Rutherford Backscattering Spectrometry and Time-of-Flight Elastic Recoil Detection Analysis were carried out to study the elemental depth profile of the films. It was found that the temperature of sintering controls the Sn diffusion inside TiO2 film. Sn atoms diffuse towards the TiO2 NTs surface for the samples annealed at 450 and 550°C. The diffusion is however hindered in the case of the heat treatment at 630°C. Besides, the Ti diffusion into the SnO2 underlayer was observed, together with the formation of TiO2/SnO2 interfaces. One then expected but not a great difference in absorption between samples, since all contained anatase phase, as confirmed by Diffuse Reflectance Spectroscopy. A higher amount of Sn was however detected for the sample annealed at 550°C, which accounts for a slight red absorption shift. The importance of controlling the annealing parameters of the anodized TiO2/FTO structures was highlighted through the formation of TiO2-SnO2 interfaces and the Sn insertion from FTO, which can play an essential role in increasing the photoperformances of TiO2 NTs/FTO based structures of photovoltaic cells.
PB  - ETRAN
T2  - Science of Sintering
T1  - TiO2 nanotubes film/FTO glass interface: Thermal treatment effects
EP  - 248
IS  - 2
SP  - 235
VL  - 54
DO  - 10.2298/SOS2202235V
UR  - https://hdl.handle.net/21.15107/rcub_dais_13160
ER  - 

@article{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Veltruska, Katerina and Matolin, Vladimir and Siketić, Zdravko and Provatas, Georgios and Jakšić, Milko and Stan, George and Socol, Gabriel and Mihailescu, Ion and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2022",
abstract = "Pure Ti films deposited by radio-frequency magnetron sputtering on FTO glass were anodized to fabricate TiO2 nanotubes (NTs) arrays. The TiO2 NTs/FTO samples were sintered at 450, 550 and 630°C, in ambient air. The thermal treatment did not influence the crystal phase composition, preserving in all cases the anatase single phase. As expected, the crystalline anatase quality improved with the annealing temperature. Nevertheless, slight differences in nanotubular morphology, such as the appearance of grains inside the walls, were observed in the case of the sample sintered at 630°C. Chemical analysis by X-ray Photoelectron Spectroscopy of annealed samples revealed the presence of Sn inside TiO2 NTs, due to diffusion of Sn from the substrate to TiO2. For the substrate was used FTO glass whose top layer consists of SnO2 doped with F. Rutherford Backscattering Spectrometry and Time-of-Flight Elastic Recoil Detection Analysis were carried out to study the elemental depth profile of the films. It was found that the temperature of sintering controls the Sn diffusion inside TiO2 film. Sn atoms diffuse towards the TiO2 NTs surface for the samples annealed at 450 and 550°C. The diffusion is however hindered in the case of the heat treatment at 630°C. Besides, the Ti diffusion into the SnO2 underlayer was observed, together with the formation of TiO2/SnO2 interfaces. One then expected but not a great difference in absorption between samples, since all contained anatase phase, as confirmed by Diffuse Reflectance Spectroscopy. A higher amount of Sn was however detected for the sample annealed at 550°C, which accounts for a slight red absorption shift. The importance of controlling the annealing parameters of the anodized TiO2/FTO structures was highlighted through the formation of TiO2-SnO2 interfaces and the Sn insertion from FTO, which can play an essential role in increasing the photoperformances of TiO2 NTs/FTO based structures of photovoltaic cells.",
publisher = "ETRAN",
journal = "Science of Sintering",
title = "TiO2 nanotubes film/FTO glass interface: Thermal treatment effects",
pages = "248-235",
number = "2",
volume = "54",
doi = "10.2298/SOS2202235V",
url = "https://hdl.handle.net/21.15107/rcub_dais_13160"
}

Vujančević, J., Bjelajac, A., Veltruska, K., Matolin, V., Siketić, Z., Provatas, G., Jakšić, M., Stan, G., Socol, G., Mihailescu, I., Pavlović, V. B.,& Janaćković, Đ.. (2022). TiO2 nanotubes film/FTO glass interface: Thermal treatment effects. in Science of Sintering
ETRAN., 54(2), 235-248.
https://doi.org/10.2298/SOS2202235V
https://hdl.handle.net/21.15107/rcub_dais_13160

Vujančević J, Bjelajac A, Veltruska K, Matolin V, Siketić Z, Provatas G, Jakšić M, Stan G, Socol G, Mihailescu I, Pavlović VB, Janaćković Đ. TiO2 nanotubes film/FTO glass interface: Thermal treatment effects. in Science of Sintering. 2022;54(2):235-248.
doi:10.2298/SOS2202235V
https://hdl.handle.net/21.15107/rcub_dais_13160 .

Vujančević, Jelena, Bjelajac, Anđelika, Veltruska, Katerina, Matolin, Vladimir, Siketić, Zdravko, Provatas, Georgios, Jakšić, Milko, Stan, George, Socol, Gabriel, Mihailescu, Ion, Pavlović, Vladimir B., Janaćković, Đorđe, "TiO2 nanotubes film/FTO glass interface: Thermal treatment effects" in Science of Sintering, 54, no. 2 (2022):235-248,
https://doi.org/10.2298/SOS2202235V .,
https://hdl.handle.net/21.15107/rcub_dais_13160 .

TY  - JOUR
AU  - Ćurčić, Milica
AU  - Hadžić, Branka
AU  - Gilić, Martina
AU  - Radojević, Vesna
AU  - Bjelajac, Anđelika
AU  - Radović, Ivana
AU  - Timotijević, Dejan
AU  - Romčević, Maja J.
AU  - Trajić, Jelena
AU  - Romčević, Nebojša Ž.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4459
AB  - The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite.
PB  - Elsevier, Amsterdam
T2  - Physica E-Low-Dimensional Systems & Nanostructures
T1  - Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites
VL  - 115
DO  - 10.1016/j.physe.2019.113708
ER  - 

@article{
author = "Ćurčić, Milica and Hadžić, Branka and Gilić, Martina and Radojević, Vesna and Bjelajac, Anđelika and Radović, Ivana and Timotijević, Dejan and Romčević, Maja J. and Trajić, Jelena and Romčević, Nebojša Ž.",
year = "2020",
abstract = "The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite.",
publisher = "Elsevier, Amsterdam",
journal = "Physica E-Low-Dimensional Systems & Nanostructures",
title = "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites",
volume = "115",
doi = "10.1016/j.physe.2019.113708"
}

Ćurčić, M., Hadžić, B., Gilić, M., Radojević, V., Bjelajac, A., Radović, I., Timotijević, D., Romčević, M. J., Trajić, J.,& Romčević, N. Ž.. (2020). Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E-Low-Dimensional Systems & Nanostructures
Elsevier, Amsterdam., 115.
https://doi.org/10.1016/j.physe.2019.113708

Ćurčić M, Hadžić B, Gilić M, Radojević V, Bjelajac A, Radović I, Timotijević D, Romčević MJ, Trajić J, Romčević NŽ. Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E-Low-Dimensional Systems & Nanostructures. 2020;115.
doi:10.1016/j.physe.2019.113708 .

Ćurčić, Milica, Hadžić, Branka, Gilić, Martina, Radojević, Vesna, Bjelajac, Anđelika, Radović, Ivana, Timotijević, Dejan, Romčević, Maja J., Trajić, Jelena, Romčević, Nebojša Ž., "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites" in Physica E-Low-Dimensional Systems & Nanostructures, 115 (2020),
https://doi.org/10.1016/j.physe.2019.113708 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Vujančević, Jelena
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketić, Zdravko
AU  - Provatas, George
AU  - Jakšić, Milko
AU  - Stan, George E.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4723
AB  - We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye
VL  - 147
DO  - 10.1016/j.jpcs.2020.109609
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Vujančević, Jelena and Veltruska, Katerina and Matolin, Vladimir and Siketić, Zdravko and Provatas, George and Jakšić, Milko and Stan, George E. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2020",
abstract = "We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye",
volume = "147",
doi = "10.1016/j.jpcs.2020.109609"
}

Bjelajac, A., Petrović, R., Vujančević, J., Veltruska, K., Matolin, V., Siketić, Z., Provatas, G., Jakšić, M., Stan, G. E., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2020). Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 147.
https://doi.org/10.1016/j.jpcs.2020.109609

Bjelajac A, Petrović R, Vujančević J, Veltruska K, Matolin V, Siketić Z, Provatas G, Jakšić M, Stan GE, Socol G, Mihailescu IN, Janaćković Đ. Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids. 2020;147.
doi:10.1016/j.jpcs.2020.109609 .

Bjelajac, Anđelika, Petrović, Rada, Vujančević, Jelena, Veltruska, Katerina, Matolin, Vladimir, Siketić, Zdravko, Provatas, George, Jakšić, Milko, Stan, George E., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye" in Journal of Physics and Chemistry of Solids, 147 (2020),
https://doi.org/10.1016/j.jpcs.2020.109609 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Vujančević, Jelena
AU  - Veltruska, Katerina
AU  - Matolin, Vladimir
AU  - Siketić, Zdravko
AU  - Provatas, George
AU  - Jakšić, Milko
AU  - Stan, George E.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4396
AB  - We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Journal of Physics and Chemistry of Solids
T1  - Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye
SP  - 109609
VL  - 147
DO  - 10.1016/j.jpcs.2020.109609
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Vujančević, Jelena and Veltruska, Katerina and Matolin, Vladimir and Siketić, Zdravko and Provatas, George and Jakšić, Milko and Stan, George E. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2020",
abstract = "We fabricated Sn-doped TiO2 nanotubular film via annealing of anodized TiO2 nanotubes grown on F-SnO2 (FTO) glass. Annealing was carried out at 500 degrees C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO(2 )nanotubes. The X-ray photoelectron spectroscopy analysis revealed Sn on the surface of TiO2 film, following the thermal treatment, probably caused by the diffusion from FTO glass. Depth profile examination of the film chemical composition was conducted by elastic recoil detection analysis, which showed that in addition to the diffusion of Sn from FTO, diffusion of Ti to FTO concurrently occurred. Thus, a higher concentration of Sn was found at the bottom of the tubes, while a lower concentration was present on the tubes' surface top. This explains the improved optical response revealed by a diffuse reflectance spectroscopy. The absorption enhancement demonstrated that Sn-doped TiO2 film was efficient in the degradation of methyl orange dye under visible light.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Journal of Physics and Chemistry of Solids",
title = "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye",
pages = "109609",
volume = "147",
doi = "10.1016/j.jpcs.2020.109609"
}

Bjelajac, A., Petrović, R., Vujančević, J., Veltruska, K., Matolin, V., Siketić, Z., Provatas, G., Jakšić, M., Stan, G. E., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2020). Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids
Pergamon-Elsevier Science Ltd, Oxford., 147, 109609.
https://doi.org/10.1016/j.jpcs.2020.109609

Bjelajac A, Petrović R, Vujančević J, Veltruska K, Matolin V, Siketić Z, Provatas G, Jakšić M, Stan GE, Socol G, Mihailescu IN, Janaćković Đ. Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye. in Journal of Physics and Chemistry of Solids. 2020;147:109609.
doi:10.1016/j.jpcs.2020.109609 .

Bjelajac, Anđelika, Petrović, Rada, Vujančević, Jelena, Veltruska, Katerina, Matolin, Vladimir, Siketić, Zdravko, Provatas, George, Jakšić, Milko, Stan, George E., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Sn-doped TiO2 nanotubular thin film for photocatalytic degradation of methyl orange dye" in Journal of Physics and Chemistry of Solids, 147 (2020):109609,
https://doi.org/10.1016/j.jpcs.2020.109609 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Kopac, Drejc
AU  - Fecant, Antoine
AU  - Tavernier, Eugenie
AU  - Petrović, Rada
AU  - Likozar, Blaž
AU  - Janaćković, Đorđe
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4466
AB  - CO2 photoreduction is studied using in-house synthesized undoped and N-doped TiO2 nanoparticle photocatalysts. Comparison with the commercial P25 TiO2 powder shows that the synthesized samples are more effective. P25 produced a negligible amount of CH4, unlike the synthesized samples. N-doping of TiO2 powder caused a higher productivity rate of all products, and provided the best performance for CO2 reduction. The average production rate of CH4 was 0.191 mu mol h(-1) g(-1), whereas that of CO was 0.111 mu mol h(-1) g(-1). The experimental data are used to fit the micro-kinetic modelling parameters. The kinetic constant of H2O dissociation is the lowest for all tested samples, revealing that this is the rate-determining step. The kinetic constants for the H-2, CO, and CH4 formation were of the same order for all catalyst samples, showing that the rates of these reactions are independent of the catalyst type.
PB  - Royal Soc Chemistry, Cambridge
T2  - Catalysis Science & Technology
T1  - Micro-kinetic modelling of photocatalytic CO2 reduction over undoped and N-doped TiO2
EP  - 1698
IS  - 6
SP  - 1688
VL  - 10
DO  - 10.1039/c9cy02443c
ER  - 

@article{
author = "Bjelajac, Anđelika and Kopac, Drejc and Fecant, Antoine and Tavernier, Eugenie and Petrović, Rada and Likozar, Blaž and Janaćković, Đorđe",
year = "2020",
abstract = "CO2 photoreduction is studied using in-house synthesized undoped and N-doped TiO2 nanoparticle photocatalysts. Comparison with the commercial P25 TiO2 powder shows that the synthesized samples are more effective. P25 produced a negligible amount of CH4, unlike the synthesized samples. N-doping of TiO2 powder caused a higher productivity rate of all products, and provided the best performance for CO2 reduction. The average production rate of CH4 was 0.191 mu mol h(-1) g(-1), whereas that of CO was 0.111 mu mol h(-1) g(-1). The experimental data are used to fit the micro-kinetic modelling parameters. The kinetic constant of H2O dissociation is the lowest for all tested samples, revealing that this is the rate-determining step. The kinetic constants for the H-2, CO, and CH4 formation were of the same order for all catalyst samples, showing that the rates of these reactions are independent of the catalyst type.",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "Catalysis Science & Technology",
title = "Micro-kinetic modelling of photocatalytic CO2 reduction over undoped and N-doped TiO2",
pages = "1698-1688",
number = "6",
volume = "10",
doi = "10.1039/c9cy02443c"
}

Bjelajac, A., Kopac, D., Fecant, A., Tavernier, E., Petrović, R., Likozar, B.,& Janaćković, Đ.. (2020). Micro-kinetic modelling of photocatalytic CO2 reduction over undoped and N-doped TiO2. in Catalysis Science & Technology
Royal Soc Chemistry, Cambridge., 10(6), 1688-1698.
https://doi.org/10.1039/c9cy02443c

Bjelajac A, Kopac D, Fecant A, Tavernier E, Petrović R, Likozar B, Janaćković Đ. Micro-kinetic modelling of photocatalytic CO2 reduction over undoped and N-doped TiO2. in Catalysis Science & Technology. 2020;10(6):1688-1698.
doi:10.1039/c9cy02443c .

Bjelajac, Anđelika, Kopac, Drejc, Fecant, Antoine, Tavernier, Eugenie, Petrović, Rada, Likozar, Blaž, Janaćković, Đorđe, "Micro-kinetic modelling of photocatalytic CO2 reduction over undoped and N-doped TiO2" in Catalysis Science & Technology, 10, no. 6 (2020):1688-1698,
https://doi.org/10.1039/c9cy02443c . .

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  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4515
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 m(2) g(-1) with a maximum pore radius (d(p)) 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 (S-BET = 278 m(2) g(-1); d(p) = 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 mu m), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 mu m. 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.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Structural and morphological characterization of iron-doped sol-gel derived mullite powders
EP  - 13113
IS  - 9
SP  - 13107
VL  - 46
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 m(2) g(-1) with a maximum pore radius (d(p)) 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 (S-BET = 278 m(2) g(-1); d(p) = 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 mu m), and then decreased and for the sample with 12 wt% Fe2O3, it was equal to 96.6 mu m. 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.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Structural and morphological characterization of iron-doped sol-gel derived mullite powders",
pages = "13113-13107",
number = "9",
volume = "46",
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
Elsevier Sci Ltd, Oxford., 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 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/5027
AB  - The ∼60 nm wide and ∼2 μm long TiO2 nanotubes were obtained by anodization of Ti films sputtered on F-doped tin oxide glass. For N-doping the samples were annealed in ammonia atmosphere. The effect of pre- and post-annealing in air on the nature and amount of incorporated N was studied by X-ray photoelectron spectroscopy. By measuring the absorption spectra of the obtained samples and interpreting the corresponding Tauc plots it was shown that the sample annealed just in ammonia showed the highest visible light absorption even after sputtering cleaning and a decrease of N amount from 3.8% to 1%. Pre and/or post annealing in air led to smaller amount of incorporated N, that caused less pronounced absorption enhancement and smaller band gap narrowing compared to the sample annealed only in ammonia. By fitting of N 1 s line, the contribution that was assigned to substitutional N was detected only in the samples that did not sustained post-annealing. The study showed that post-annealing in air might lead to partial conversion of N atoms in TiO2 to oxidized nitrogen species that are easily removed with sputtering. It is also possible that substitutional nitrogen was suppressed by oxygen from air to move to interstitial site. Weakly bonded NOx surface species, which are cleaned away by sputtering, can be removed by post-annealing in air. Those surface species could act as sensitizers and when their amounts are reduced, the core absorption properties, as a result of interstitial incorporation of N in TiO2 structure, were revealed. Much lower visible light sensitization was achieved in the case of pre-annealed sample in comparison to sample without pre-annealing, regardless the same quantity and type of incorporated nitrogen.
PB  - Elsevier Ltd
T2  - Thin Solid Films
T1  - Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air
SP  - 137598
VL  - 692
DO  - 10.1016/j.tsf.2019.137598
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Popović, Maja and Rakočević, Zlatko Lj. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2019",
abstract = "The ∼60 nm wide and ∼2 μm long TiO2 nanotubes were obtained by anodization of Ti films sputtered on F-doped tin oxide glass. For N-doping the samples were annealed in ammonia atmosphere. The effect of pre- and post-annealing in air on the nature and amount of incorporated N was studied by X-ray photoelectron spectroscopy. By measuring the absorption spectra of the obtained samples and interpreting the corresponding Tauc plots it was shown that the sample annealed just in ammonia showed the highest visible light absorption even after sputtering cleaning and a decrease of N amount from 3.8% to 1%. Pre and/or post annealing in air led to smaller amount of incorporated N, that caused less pronounced absorption enhancement and smaller band gap narrowing compared to the sample annealed only in ammonia. By fitting of N 1 s line, the contribution that was assigned to substitutional N was detected only in the samples that did not sustained post-annealing. The study showed that post-annealing in air might lead to partial conversion of N atoms in TiO2 to oxidized nitrogen species that are easily removed with sputtering. It is also possible that substitutional nitrogen was suppressed by oxygen from air to move to interstitial site. Weakly bonded NOx surface species, which are cleaned away by sputtering, can be removed by post-annealing in air. Those surface species could act as sensitizers and when their amounts are reduced, the core absorption properties, as a result of interstitial incorporation of N in TiO2 structure, were revealed. Much lower visible light sensitization was achieved in the case of pre-annealed sample in comparison to sample without pre-annealing, regardless the same quantity and type of incorporated nitrogen.",
publisher = "Elsevier Ltd",
journal = "Thin Solid Films",
title = "Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air",
pages = "137598",
volume = "692",
doi = "10.1016/j.tsf.2019.137598"
}

Bjelajac, A., Petrović, R., Popović, M., Rakočević, Z. Lj., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2019). Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air. in Thin Solid Films
Elsevier Ltd., 692, 137598.
https://doi.org/10.1016/j.tsf.2019.137598

Bjelajac A, Petrović R, Popović M, Rakočević ZL, Socol G, Mihailescu IN, Janaćković Đ. Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air. in Thin Solid Films. 2019;692:137598.
doi:10.1016/j.tsf.2019.137598 .

Bjelajac, Anđelika, Petrović, Rada, Popović, Maja, Rakočević, Zlatko Lj., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air" in Thin Solid Films, 692 (2019):137598,
https://doi.org/10.1016/j.tsf.2019.137598 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4092
AB  - The similar to 60 nm wide and similar to 2 mu m long TiO2 nanotubes were obtained by anodization of Ti films sputtered on F-doped tin oxide glass. For N-doping the samples were annealed in ammonia atmosphere. The effect of pre- and post-annealing in air on the nature and amount of incorporated N was studied by X-ray photoelectron spectroscopy. By measuring the absorption spectra of the obtained samples and interpreting the corresponding Tauc plots it was shown that the sample annealed just in ammonia showed the highest visible light absorption even after sputtering cleaning and a decrease of N amount from 3.8% to 1%. Pre and/or post annealing in air led to smaller amount of incorporated N, that caused less pronounced absorption enhancement and smaller band gap narrowing compared to the sample annealed only in ammonia. By fitting of N 1 s line, the contribution that was assigned to substitutional N was detected only in the samples that did not sustained post-annealing. The study showed that post-annealing in air might lead to partial conversion of N atoms in TiO2 to oxidized nitrogen species that are easily removed with sputtering. It is also possible that substitutional nitrogen was suppressed by oxygen from air to move to interstitial site. Weakly bonded NOx surface species, which are cleaned away by sputtering, can be removed by post-annealing in air. Those surface species could act as sensitizers and when their amounts are reduced, the core absorption properties, as a result of interstitial incorporation of N in TiO2 structure, were revealed. Much lower visible light sensitization was achieved in the case of pre-annealed sample in comparison to sample without pre-annealing, regardless the same quantity and type of incorporated nitrogen.
PB  - Elsevier Science Sa, Lausanne
T2  - Thin Solid Films
T1  - Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air
SP  - 137598
VL  - 692
DO  - 10.1016/j.tsf.2019.137598
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Popović, Maja and Rakočević, Zlatko Lj. and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2019",
abstract = "The similar to 60 nm wide and similar to 2 mu m long TiO2 nanotubes were obtained by anodization of Ti films sputtered on F-doped tin oxide glass. For N-doping the samples were annealed in ammonia atmosphere. The effect of pre- and post-annealing in air on the nature and amount of incorporated N was studied by X-ray photoelectron spectroscopy. By measuring the absorption spectra of the obtained samples and interpreting the corresponding Tauc plots it was shown that the sample annealed just in ammonia showed the highest visible light absorption even after sputtering cleaning and a decrease of N amount from 3.8% to 1%. Pre and/or post annealing in air led to smaller amount of incorporated N, that caused less pronounced absorption enhancement and smaller band gap narrowing compared to the sample annealed only in ammonia. By fitting of N 1 s line, the contribution that was assigned to substitutional N was detected only in the samples that did not sustained post-annealing. The study showed that post-annealing in air might lead to partial conversion of N atoms in TiO2 to oxidized nitrogen species that are easily removed with sputtering. It is also possible that substitutional nitrogen was suppressed by oxygen from air to move to interstitial site. Weakly bonded NOx surface species, which are cleaned away by sputtering, can be removed by post-annealing in air. Those surface species could act as sensitizers and when their amounts are reduced, the core absorption properties, as a result of interstitial incorporation of N in TiO2 structure, were revealed. Much lower visible light sensitization was achieved in the case of pre-annealed sample in comparison to sample without pre-annealing, regardless the same quantity and type of incorporated nitrogen.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Thin Solid Films",
title = "Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air",
pages = "137598",
volume = "692",
doi = "10.1016/j.tsf.2019.137598"
}

Bjelajac, A., Petrović, R., Popović, M., Rakočević, Z. Lj., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2019). Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air. in Thin Solid Films
Elsevier Science Sa, Lausanne., 692, 137598.
https://doi.org/10.1016/j.tsf.2019.137598

Bjelajac A, Petrović R, Popović M, Rakočević ZL, Socol G, Mihailescu IN, Janaćković Đ. Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air. in Thin Solid Films. 2019;692:137598.
doi:10.1016/j.tsf.2019.137598 .

Bjelajac, Anđelika, Petrović, Rada, Popović, Maja, Rakočević, Zlatko Lj., Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Doping of TiO2 nanotubes with nitrogen by annealing in ammonia for visible light activation: Influence of pre- and post-annealing in air" in Thin Solid Films, 692 (2019):137598,
https://doi.org/10.1016/j.tsf.2019.137598 . .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Horvath, Endre
AU  - Kollar, Marton
AU  - Nafradi, Balint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forro, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4251
AB  - Highly ordered, anodically grown TiO2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping ( lt = 2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 +/- 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO2/CH3NH3PbI3 single crystals. The N-TiO2/perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
EP  - 10020
IS  - 8
SP  - 10013
VL  - 45
DO  - 10.1016/j.ceramint.2019.02.045
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko Lj. and Horvath, Endre and Kollar, Marton and Nafradi, Balint and Schiller, Andreas and Domanski, Konrad and Forro, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping ( lt = 2 at.%) in the titanium oxide lattice. FESEM micrographs revealed nanotubes with an average outer diameter of 101.5 +/- 1.5 nm and an average wall thickness of about 13 nm. Anatase crystals were formed inside the tubes after annealing in ammonia atmosphere for 30 min. With further annealing, rutile peaks appeared due to the thermal oxidation of the foil and rise as the duration of heat treatment was increased. The concentration and chemical nature of nitrogen in the nanotube arrays can be correlated to the optical response of dry-pressed heterojunctions of doped TiO2/CH3NH3PbI3 single crystals. The N-TiO2/perovskite heterojunction with the highest amount of interstitial nitrogen exhibited an improved photocurrent, indicating the importance of the semiconductor doping-based heterojunction optimization strategies to deliver competitive levels of halide perovskite-based optoelectronic devices to be envisioned for urban infrastructures.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10020-10013",
number = "8",
volume = "45",
doi = "10.1016/j.ceramint.2019.02.045"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z. Lj., Horvath, E., Kollar, M., Nafradi, B., Schiller, A., Domanski, K., Forro, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier Sci Ltd, Oxford., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakočević ZL, Horvath E, Kollar M, Nafradi B, Schiller A, Domanski K, Forro L, Pavlović VP, Janaćković Đ. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International. 2019;45(8):10013-10020.
doi:10.1016/j.ceramint.2019.02.045 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko Lj., Horvath, Endre, Kollar, Marton, Nafradi, Balint, Schiller, Andreas, Domanski, Konrad, Forro, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping" in Ceramics International, 45, no. 8 (2019):10013-10020,
https://doi.org/10.1016/j.ceramint.2019.02.045 . .

TY  - DATA
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko Lj.
AU  - Horváth, Endre
AU  - Kollar, Marton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4163
AB  - Table S1. Reported methods for nitrogen doping of anodized TiO2 nanotube arrays; Figure S1. SEM images and statistical distributions of outer diameters obtained by analyzing SEM micrographs of 100 nanotubes; Table S2. Average morphology parameters for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S3. Average crystals size for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S2. Deconvoluted XPS spectra of N 1s core level of Ti foil (black line-experimental, grey line-background, magenta line-envelope); Table S4. Peak positions and atomic percentages of N1s core levels for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S5. Positions and atomic percentages of Ti 2p3/2 and O1s core peaks for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S3. The time evolution of the current during the preconditioning of the TiO2/perovskite sample at a bias voltage of 100 V for 75 sec. Dashed line is the logarithmic fit of the base line of the current time evolution; Figure S4. Ideality factor for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples
T2  - Ceramics International
T1  - Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045
UR  - https://hdl.handle.net/21.15107/rcub_dais_5969
ER  - 

@misc{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko Lj. and Horváth, Endre and Kollar, Marton and Náfrádi, Bálint and Schiller, Andreas and Domanski, Konrad and Forró, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Table S1. Reported methods for nitrogen doping of anodized TiO2 nanotube arrays; Figure S1. SEM images and statistical distributions of outer diameters obtained by analyzing SEM micrographs of 100 nanotubes; Table S2. Average morphology parameters for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S3. Average crystals size for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S2. Deconvoluted XPS spectra of N 1s core level of Ti foil (black line-experimental, grey line-background, magenta line-envelope); Table S4. Peak positions and atomic percentages of N1s core levels for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Table S5. Positions and atomic percentages of Ti 2p3/2 and O1s core peaks for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples; Figure S3. The time evolution of the current during the preconditioning of the TiO2/perovskite sample at a bias voltage of 100 V for 75 sec. Dashed line is the logarithmic fit of the base line of the current time evolution; Figure S4. Ideality factor for TiO2-undoped, TiO2-N30, TiO2-N60 and TiO2-N90 samples",
journal = "Ceramics International",
title = "Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045",
url = "https://hdl.handle.net/21.15107/rcub_dais_5969"
}

Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z. Lj., Horváth, E., Kollar, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V. P.,& Janaćković, Đ.. (2019). Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045. in Ceramics International.
https://hdl.handle.net/21.15107/rcub_dais_5969

Vujančević J, Andričević P, Bjelajac A, Đokić V, Popović M, Rakočević ZL, Horváth E, Kollar M, Náfrádi B, Schiller A, Domanski K, Forró L, Pavlović VP, Janaćković Đ. Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045. in Ceramics International. 2019;.
https://hdl.handle.net/21.15107/rcub_dais_5969 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko Lj., Horváth, Endre, Kollar, Marton, Náfrádi, Bálint, Schiller, Andreas, Domanski, Konrad, Forró, Laszlo, Pavlović, Vera P., Janaćković, Đorđe, "Supporting information for the article: Vujančević, J., Andričević, P., Bjelajac, A., Đokić, V., Popović, M., Rakočević, Z., Horváth, E., Kollár, M., Náfrádi, B., Schiller, A., Domanski, K., Forró, L., Pavlović, V., Janaćković, Đ., 2019. Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. Ceramics International 45, 10013–10020. https://doi.org/10.1016/j.ceramint.2019.02.045" in Ceramics International (2019),
https://hdl.handle.net/21.15107/rcub_dais_5969 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Provatas, Georgios
AU  - Siketić, Zdravko
AU  - Jakšić, Milko
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4170
AB  - Different semiconductors have been studied as photoanode material for solar cells. Among them, TiO2 has been shown to be the best material due to its chemical stability and good charge transport capability. It is usually deposited onto FTO glass (F-SnO2), and then heated at high temperature in order to obtain inter-crystalline electric contact for improving electron conductivity. The focus of this research was chemical analysis of the TiO2 nanotubes (NTs) obtained by anodization of titanium film on FTO glass using NH4F in ethylene glycol electrolyte. There are only few studies suggesting that the electrolyte is a source of N dopant in TiO2, but also Sn diffusion from FTO support was reported. This study aims to show the chemical distribution of elements of interest along the nanotubes depth. For that purpose the time-of-flight elastic recoil detection analysis (ToF-ERDA) and Rutherford backscattering (RBS) methods were used as complementary techniques for chemical analysis of both light, such is N, and heavy elements, such is Sn. The TiO2 NTs films were annealed at different temperatures (450– 630 °C) and the impact of the heating temperature on the chemical distribution was followed.
PB  - Novi Sad : Faculty of Technology
C3  - Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), Octo
T1  - ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass
EP  - 132
SP  - 132
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4170
ER  - 

@conference{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Provatas, Georgios and Siketić, Zdravko and Jakšić, Milko and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2019",
abstract = "Different semiconductors have been studied as photoanode material for solar cells. Among them, TiO2 has been shown to be the best material due to its chemical stability and good charge transport capability. It is usually deposited onto FTO glass (F-SnO2), and then heated at high temperature in order to obtain inter-crystalline electric contact for improving electron conductivity. The focus of this research was chemical analysis of the TiO2 nanotubes (NTs) obtained by anodization of titanium film on FTO glass using NH4F in ethylene glycol electrolyte. There are only few studies suggesting that the electrolyte is a source of N dopant in TiO2, but also Sn diffusion from FTO support was reported. This study aims to show the chemical distribution of elements of interest along the nanotubes depth. For that purpose the time-of-flight elastic recoil detection analysis (ToF-ERDA) and Rutherford backscattering (RBS) methods were used as complementary techniques for chemical analysis of both light, such is N, and heavy elements, such is Sn. The TiO2 NTs films were annealed at different temperatures (450– 630 °C) and the impact of the heating temperature on the chemical distribution was followed.",
publisher = "Novi Sad : Faculty of Technology",
journal = "Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), Octo",
title = "ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass",
pages = "132-132",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4170"
}

Vujančević, J., Bjelajac, A., Provatas, G., Siketić, Z., Jakšić, M., Pavlović, V. B.,& Janaćković, Đ.. (2019). ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass. in Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), Octo
Novi Sad : Faculty of Technology., 132-132.
https://hdl.handle.net/21.15107/rcub_technorep_4170

Vujančević J, Bjelajac A, Provatas G, Siketić Z, Jakšić M, Pavlović VB, Janaćković Đ. ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass. in Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), Octo. 2019;:132-132.
https://hdl.handle.net/21.15107/rcub_technorep_4170 .

Vujančević, Jelena, Bjelajac, Anđelika, Provatas, Georgios, Siketić, Zdravko, Jakšić, Milko, Pavlović, Vladimir B., Janaćković, Đorđe, "ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass" in Programme and book of abstracts / 13th Conference for Young Scientists in Ceramics (CYSC-2017), Octo (2019):132-132,
https://hdl.handle.net/21.15107/rcub_technorep_4170 .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Đokić, Veljko
AU  - Matolin, Vladimir
AU  - Vondracek, Martin
AU  - Dembele, Kassioge
AU  - Moldovan, Simona
AU  - Ersen, Ovidiu
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Janaćković, Đorđe
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3933
AB  - Anodization of titanium film sputtered on fluorine doped tin oxide (FTO) glass was performed to obtain highly ordered approximate to 2 m long and approximate to 60 nm wide TiO2 nanotubes. The titania films were annealed in ammonia atmosphere to enable the doping with N. The annealing did not affect the nanotubular morphology and the porosity remained open which is a very important requirement for further deposition of CdS quantum dots. The analysis done by transmission electron microscopy (TEM) has shown that the N-doped nanotubes have a smaller interplanar distance as compared to the undoped ones, whose interplanar distance corresponded to anatase phase. This difference was attributed to the N doping and the Sn migration from the substrate, as demonstrated by energy dispersive spectroscopy (EDS) combined with electron energy loss spectroscopy (EELS). The near edge X-ray absorption fine structure (NEXAFS) analysis clearly demonstrated that also the doped TiO2 film has anatase phase. Regarding the chemical composition of the studied samples, the X-ray photoelectron spectroscopy (XPS) and synchrotron radiation photoelectron spectroscopy (SRPES) analyses have shown that N is incorporated both interstitially and substitutionally in the TiO2 lattice, with a decreased contribution of the interstitial after ionic sputtering. The shift of the valence band maximum (VBM) position for the doped TiO(2)vs. the undoped TiO2 proved the narrowing of the band gap. The CdS/TiO2 films show bigger VBM shifting that can be attributed to CdS deposit. Comparing the absorption spectra of the bare undoped and doped TiO2 samples, it was noticed that the doping causes a red shift from 397 to 465 nm. Furthermore, the CdS deposition additionally enhances the absorption in the visible range (575 nm for undoped TiO2/CdS and 560 nm for doped TiO2/CdS films).
PB  - Royal Soc Chemistry, Cambridge
T2  - RSC Advances
T1  - Enhanced absorption of TiO2 nanotubes by N-doping and CdS quantum dots sensitization: insight into the structure
EP  - 35082
IS  - 61
SP  - 35073
VL  - 8
DO  - 10.1039/c8ra06341a
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Đokić, Veljko and Matolin, Vladimir and Vondracek, Martin and Dembele, Kassioge and Moldovan, Simona and Ersen, Ovidiu and Socol, Gabriel and Mihailescu, Ion N. and Janaćković, Đorđe",
year = "2018",
abstract = "Anodization of titanium film sputtered on fluorine doped tin oxide (FTO) glass was performed to obtain highly ordered approximate to 2 m long and approximate to 60 nm wide TiO2 nanotubes. The titania films were annealed in ammonia atmosphere to enable the doping with N. The annealing did not affect the nanotubular morphology and the porosity remained open which is a very important requirement for further deposition of CdS quantum dots. The analysis done by transmission electron microscopy (TEM) has shown that the N-doped nanotubes have a smaller interplanar distance as compared to the undoped ones, whose interplanar distance corresponded to anatase phase. This difference was attributed to the N doping and the Sn migration from the substrate, as demonstrated by energy dispersive spectroscopy (EDS) combined with electron energy loss spectroscopy (EELS). The near edge X-ray absorption fine structure (NEXAFS) analysis clearly demonstrated that also the doped TiO2 film has anatase phase. Regarding the chemical composition of the studied samples, the X-ray photoelectron spectroscopy (XPS) and synchrotron radiation photoelectron spectroscopy (SRPES) analyses have shown that N is incorporated both interstitially and substitutionally in the TiO2 lattice, with a decreased contribution of the interstitial after ionic sputtering. The shift of the valence band maximum (VBM) position for the doped TiO(2)vs. the undoped TiO2 proved the narrowing of the band gap. The CdS/TiO2 films show bigger VBM shifting that can be attributed to CdS deposit. Comparing the absorption spectra of the bare undoped and doped TiO2 samples, it was noticed that the doping causes a red shift from 397 to 465 nm. Furthermore, the CdS deposition additionally enhances the absorption in the visible range (575 nm for undoped TiO2/CdS and 560 nm for doped TiO2/CdS films).",
publisher = "Royal Soc Chemistry, Cambridge",
journal = "RSC Advances",
title = "Enhanced absorption of TiO2 nanotubes by N-doping and CdS quantum dots sensitization: insight into the structure",
pages = "35082-35073",
number = "61",
volume = "8",
doi = "10.1039/c8ra06341a"
}

Bjelajac, A., Petrović, R., Đokić, V., Matolin, V., Vondracek, M., Dembele, K., Moldovan, S., Ersen, O., Socol, G., Mihailescu, I. N.,& Janaćković, Đ.. (2018). Enhanced absorption of TiO2 nanotubes by N-doping and CdS quantum dots sensitization: insight into the structure. in RSC Advances
Royal Soc Chemistry, Cambridge., 8(61), 35073-35082.
https://doi.org/10.1039/c8ra06341a

Bjelajac A, Petrović R, Đokić V, Matolin V, Vondracek M, Dembele K, Moldovan S, Ersen O, Socol G, Mihailescu IN, Janaćković Đ. Enhanced absorption of TiO2 nanotubes by N-doping and CdS quantum dots sensitization: insight into the structure. in RSC Advances. 2018;8(61):35073-35082.
doi:10.1039/c8ra06341a .

Bjelajac, Anđelika, Petrović, Rada, Đokić, Veljko, Matolin, Vladimir, Vondracek, Martin, Dembele, Kassioge, Moldovan, Simona, Ersen, Ovidiu, Socol, Gabriel, Mihailescu, Ion N., Janaćković, Đorđe, "Enhanced absorption of TiO2 nanotubes by N-doping and CdS quantum dots sensitization: insight into the structure" in RSC Advances, 8, no. 61 (2018):35073-35082,
https://doi.org/10.1039/c8ra06341a . .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Ćirković, Jovana
AU  - Pavlović, Vera P.
AU  - Horváth, Endre
AU  - Forró, László
AU  - Janaćković, Đorđe
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3767
AB  - Semiconductor TiO2 photocatalysis is a heterogeneous catalysis, where the photons of the sun or artificial light source are activating the catalyst that enters in reactions. The targeted real-world applications are in environmental protection and remediation such as wastewater treatment, air purification and decomposition of harmful organic pollutants. In this talk, I present the synthesis of nanotubular, thin TiO2 coatings with altered morphology and crystallinity made by anodization technique. The influence of the anodization parameters and post-synthesis annealing conditions on the photocatalytic methyl orange dye decomposition was assessed. Different morphology, crystallinity and introducing a dopant into lattice increase electron transport and electron lifetime which further improve photocatalytic activity.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and
T1  - Customizing nanotubular titania for photocatalytic activity
EP  - 77
SP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3767
ER  - 

@conference{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Ćirković, Jovana and Pavlović, Vera P. and Horváth, Endre and Forró, László and Janaćković, Đorđe and Pavlović, Vladimir B.",
year = "2018",
abstract = "Semiconductor TiO2 photocatalysis is a heterogeneous catalysis, where the photons of the sun or artificial light source are activating the catalyst that enters in reactions. The targeted real-world applications are in environmental protection and remediation such as wastewater treatment, air purification and decomposition of harmful organic pollutants. In this talk, I present the synthesis of nanotubular, thin TiO2 coatings with altered morphology and crystallinity made by anodization technique. The influence of the anodization parameters and post-synthesis annealing conditions on the photocatalytic methyl orange dye decomposition was assessed. Different morphology, crystallinity and introducing a dopant into lattice increase electron transport and electron lifetime which further improve photocatalytic activity.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and",
title = "Customizing nanotubular titania for photocatalytic activity",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3767"
}

Vujančević, J., Bjelajac, A., Ćirković, J., Pavlović, V. P., Horváth, E., Forró, L., Janaćković, Đ.,& Pavlović, V. B.. (2018). Customizing nanotubular titania for photocatalytic activity. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and
Belgrade : Institute of Technical Sciences of SASA., 77-77.
https://hdl.handle.net/21.15107/rcub_technorep_3767

Vujančević J, Bjelajac A, Ćirković J, Pavlović VP, Horváth E, Forró L, Janaćković Đ, Pavlović VB. Customizing nanotubular titania for photocatalytic activity. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and. 2018;:77-77.
https://hdl.handle.net/21.15107/rcub_technorep_3767 .

Vujančević, Jelena, Bjelajac, Anđelika, Ćirković, Jovana, Pavlović, Vera P., Horváth, Endre, Forró, László, Janaćković, Đorđe, Pavlović, Vladimir B., "Customizing nanotubular titania for photocatalytic activity" in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and (2018):77-77,
https://hdl.handle.net/21.15107/rcub_technorep_3767 .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Ćirković, Jovana
AU  - Pavlović, Vera P.
AU  - Horvath, Endre
AU  - Forro, Laszlo
AU  - Vlahović, Branislav
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4032
AB  - One-dimensional (1D) TiO2 nanotubes perpendicular to the substrate were obtained by electrochemical oxidation of titanium foil in an acid electrolyte. In order to alter the crystallinity and the morphology of films the as-anodized amorphous TiO2 nanotube films were sintered at elevated temperatures. The evolution of the morphology was visualized via scanning electron microscopy (SEM), while the crystalline structure was investigated by Xray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by Xray photoelectron spectroscopy (XPS). The effects of crystallinity and morphology of TiO2 nanotube (NTs) films on photocatalytic degradation of methyl orange (MO) in an aqueous solution under UV light irradiation were also investigated. The TiO2 nanotubes sintered at 650 degrees C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - Structure and photocatalytic properties of sintered TiO2 nanotube arrays
EP  - 50
IS  - 1
SP  - 39
VL  - 50
DO  - 10.2298/SOS1801039V
ER  - 

@article{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Ćirković, Jovana and Pavlović, Vera P. and Horvath, Endre and Forro, Laszlo and Vlahović, Branislav and Mitrić, Miodrag and Janaćković, Đorđe and Pavlović, Vladimir B.",
year = "2018",
abstract = "One-dimensional (1D) TiO2 nanotubes perpendicular to the substrate were obtained by electrochemical oxidation of titanium foil in an acid electrolyte. In order to alter the crystallinity and the morphology of films the as-anodized amorphous TiO2 nanotube films were sintered at elevated temperatures. The evolution of the morphology was visualized via scanning electron microscopy (SEM), while the crystalline structure was investigated by Xray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by Xray photoelectron spectroscopy (XPS). The effects of crystallinity and morphology of TiO2 nanotube (NTs) films on photocatalytic degradation of methyl orange (MO) in an aqueous solution under UV light irradiation were also investigated. The TiO2 nanotubes sintered at 650 degrees C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "Structure and photocatalytic properties of sintered TiO2 nanotube arrays",
pages = "50-39",
number = "1",
volume = "50",
doi = "10.2298/SOS1801039V"
}

Vujančević, J., Bjelajac, A., Ćirković, J., Pavlović, V. P., Horvath, E., Forro, L., Vlahović, B., Mitrić, M., Janaćković, Đ.,& Pavlović, V. B.. (2018). Structure and photocatalytic properties of sintered TiO2 nanotube arrays. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 50(1), 39-50.
https://doi.org/10.2298/SOS1801039V

Vujančević J, Bjelajac A, Ćirković J, Pavlović VP, Horvath E, Forro L, Vlahović B, Mitrić M, Janaćković Đ, Pavlović VB. Structure and photocatalytic properties of sintered TiO2 nanotube arrays. in Science of Sintering. 2018;50(1):39-50.
doi:10.2298/SOS1801039V .

Vujančević, Jelena, Bjelajac, Anđelika, Ćirković, Jovana, Pavlović, Vera P., Horvath, Endre, Forro, Laszlo, Vlahović, Branislav, Mitrić, Miodrag, Janaćković, Đorđe, Pavlović, Vladimir B., "Structure and photocatalytic properties of sintered TiO2 nanotube arrays" in Science of Sintering, 50, no. 1 (2018):39-50,
https://doi.org/10.2298/SOS1801039V . .

Janković-Častvan, I., Lazarević, S., Radovanović, Ž., Đokić, V., Popovic, D., Bjelajac, A., Živković, P., Petrović, R.,& Janaćković, Đ.. (2017). Surface Properties of HAP Particles obtained by Hydrothermal Decomposition of Urea and Calcium-EDTA Chelates. in Matični naučni odbor za materijale i hemijske tehnologije.
https://hdl.handle.net/21.15107/rcub_technorep_6034

Janković-Častvan I, Lazarević S, Radovanović Ž, Đokić V, Popovic D, Bjelajac A, Živković P, Petrović R, Janaćković Đ. Surface Properties of HAP Particles obtained by Hydrothermal Decomposition of Urea and Calcium-EDTA Chelates. in Matični naučni odbor za materijale i hemijske tehnologije. 2017;.
https://hdl.handle.net/21.15107/rcub_technorep_6034 .

Janković-Častvan, Ivona, Lazarević, Slavica, Radovanović, Željko, Đokić, Veljko, Popovic, Daniela, Bjelajac, Anđelika, Živković, Predrag, Petrović, Rada, Janaćković, Đorđe, "Surface Properties of HAP Particles obtained by Hydrothermal Decomposition of Urea and Calcium-EDTA Chelates" in Matični naučni odbor za materijale i hemijske tehnologije (2017),
https://hdl.handle.net/21.15107/rcub_technorep_6034 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Pavlović, Vera P.
AU  - Vlahović, Branislav
AU  - Janaćković, Đorđe
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3479
AB  - Nanomaterials development is a rapidly emerging field of research with enormous potential for societal and economic benefits. In agro and food industries dimension-dependent properties or phenomena of nanomaterials may be used for various functional effects such as increased bioavailability or decreased toxicity of products, better detection of pathogens, improved food packaging materials, or improved delivery of nutrients. Since these effects may derive from altered or unique characteristics of materials in the nanoscale range that are not normally observed or expected in larger-scale materials with the same chemical composition, such changes raise questions about the safety, effectiveness, performance, quality or public health impact of nanotechnology products. In this article, we have reviewed the fabrication, properties, and selected applications of nanostructured TiO2 based materials. Special attention has been paid to TiO2 nanoparticles and nanotubes fabrication perspectives and applications in agriculture. We have shown that high photocatalytic disinfection and photobiological effects of nanostructured TiO2 coupled with its low price, nontoxicity, and stable performance especially provide new approaches for solving environmental pollution and pesticide residue problems in agriculture.
PB  - Belgrade : Faculty of Agriculture, Department for Agricultural Engineering
C3  - Book of Abstracts / The Third International Symposium on Agricultural Engineering, ISAE-2017, 20th-2
T1  - Fabrication and applications of multifunctional nanostructured TiO2
EP  - 44
SP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3479
ER  - 

@conference{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Pavlović, Vera P. and Vlahović, Branislav and Janaćković, Đorđe and Pavlović, Vladimir B.",
year = "2017",
abstract = "Nanomaterials development is a rapidly emerging field of research with enormous potential for societal and economic benefits. In agro and food industries dimension-dependent properties or phenomena of nanomaterials may be used for various functional effects such as increased bioavailability or decreased toxicity of products, better detection of pathogens, improved food packaging materials, or improved delivery of nutrients. Since these effects may derive from altered or unique characteristics of materials in the nanoscale range that are not normally observed or expected in larger-scale materials with the same chemical composition, such changes raise questions about the safety, effectiveness, performance, quality or public health impact of nanotechnology products. In this article, we have reviewed the fabrication, properties, and selected applications of nanostructured TiO2 based materials. Special attention has been paid to TiO2 nanoparticles and nanotubes fabrication perspectives and applications in agriculture. We have shown that high photocatalytic disinfection and photobiological effects of nanostructured TiO2 coupled with its low price, nontoxicity, and stable performance especially provide new approaches for solving environmental pollution and pesticide residue problems in agriculture.",
publisher = "Belgrade : Faculty of Agriculture, Department for Agricultural Engineering",
journal = "Book of Abstracts / The Third International Symposium on Agricultural Engineering, ISAE-2017, 20th-2",
title = "Fabrication and applications of multifunctional nanostructured TiO2",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3479"
}

Vujančević, J., Bjelajac, A., Pavlović, V. P., Vlahović, B., Janaćković, Đ.,& Pavlović, V. B.. (2017). Fabrication and applications of multifunctional nanostructured TiO2. in Book of Abstracts / The Third International Symposium on Agricultural Engineering, ISAE-2017, 20th-2
Belgrade : Faculty of Agriculture, Department for Agricultural Engineering., 44-44.
https://hdl.handle.net/21.15107/rcub_technorep_3479

Vujančević J, Bjelajac A, Pavlović VP, Vlahović B, Janaćković Đ, Pavlović VB. Fabrication and applications of multifunctional nanostructured TiO2. in Book of Abstracts / The Third International Symposium on Agricultural Engineering, ISAE-2017, 20th-2. 2017;:44-44.
https://hdl.handle.net/21.15107/rcub_technorep_3479 .

Vujančević, Jelena, Bjelajac, Anđelika, Pavlović, Vera P., Vlahović, Branislav, Janaćković, Đorđe, Pavlović, Vladimir B., "Fabrication and applications of multifunctional nanostructured TiO2" in Book of Abstracts / The Third International Symposium on Agricultural Engineering, ISAE-2017, 20th-2 (2017):44-44,
https://hdl.handle.net/21.15107/rcub_technorep_3479 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Pavlović, Vera P.
AU  - Vlahović, Branislav
AU  - Janaćković, Đorđe
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3487
AB  - Nanomaterials development is a rapidly emerging field of research with enormous potential for societal and economic benefits. In agro and food industries dimension-dependent properties or phenomena of nanomaterials may be used for various functional effects such as increased bioavailability or decreased toxicity of products, better detection of pathogens, improved food packaging materials, or improved delivery of nutrients. Since these effects may derive from altered or unique characteristics of materials in the nanoscale range that are not normally observed or expected in larger-scale materials with the same chemical composition, such changes raise questions about the safety, effectiveness, performance, quality or public health impact of nanotechnology products. In this article, we have reviewed the fabrication, properties, and selected applications of nanostructured TiO2 based materials. Special attention has been paid to TiO2 nanoparticles and nanotubes fabrication perspectives and applications in agriculture. We have shown that high photocatalytic disinfection and photobiological effects of nanostructured TiO2 coupled with its low price, nontoxicity, and stable performance especially provide new approaches for solving environmental pollution and pesticide residue problems in agriculture.
PB  - Belgrade : Faculty of Agriculture, Department for Agricultural Engineering
C3  - Proceedings / The Third International Symposium on Agricultural Engineering, ISAE-2017, October, 20t
T1  - Fabrication and applications of multifunctional nanostructured TiO2
EP  - VII - 18
SP  - VII - 10
UR  - https://hdl.handle.net/21.15107/rcub_technorep_3487
ER  - 

@conference{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Pavlović, Vera P. and Vlahović, Branislav and Janaćković, Đorđe and Pavlović, Vladimir B.",
year = "2017",
abstract = "Nanomaterials development is a rapidly emerging field of research with enormous potential for societal and economic benefits. In agro and food industries dimension-dependent properties or phenomena of nanomaterials may be used for various functional effects such as increased bioavailability or decreased toxicity of products, better detection of pathogens, improved food packaging materials, or improved delivery of nutrients. Since these effects may derive from altered or unique characteristics of materials in the nanoscale range that are not normally observed or expected in larger-scale materials with the same chemical composition, such changes raise questions about the safety, effectiveness, performance, quality or public health impact of nanotechnology products. In this article, we have reviewed the fabrication, properties, and selected applications of nanostructured TiO2 based materials. Special attention has been paid to TiO2 nanoparticles and nanotubes fabrication perspectives and applications in agriculture. We have shown that high photocatalytic disinfection and photobiological effects of nanostructured TiO2 coupled with its low price, nontoxicity, and stable performance especially provide new approaches for solving environmental pollution and pesticide residue problems in agriculture.",
publisher = "Belgrade : Faculty of Agriculture, Department for Agricultural Engineering",
journal = "Proceedings / The Third International Symposium on Agricultural Engineering, ISAE-2017, October, 20t",
title = "Fabrication and applications of multifunctional nanostructured TiO2",
pages = "VII - 18-VII - 10",
url = "https://hdl.handle.net/21.15107/rcub_technorep_3487"
}

Vujančević, J., Bjelajac, A., Pavlović, V. P., Vlahović, B., Janaćković, Đ.,& Pavlović, V. B.. (2017). Fabrication and applications of multifunctional nanostructured TiO2. in Proceedings / The Third International Symposium on Agricultural Engineering, ISAE-2017, October, 20t
Belgrade : Faculty of Agriculture, Department for Agricultural Engineering., VII - 10-VII - 18.
https://hdl.handle.net/21.15107/rcub_technorep_3487

Vujančević J, Bjelajac A, Pavlović VP, Vlahović B, Janaćković Đ, Pavlović VB. Fabrication and applications of multifunctional nanostructured TiO2. in Proceedings / The Third International Symposium on Agricultural Engineering, ISAE-2017, October, 20t. 2017;:VII - 10-VII - 18.
https://hdl.handle.net/21.15107/rcub_technorep_3487 .

Vujančević, Jelena, Bjelajac, Anđelika, Pavlović, Vera P., Vlahović, Branislav, Janaćković, Đorđe, Pavlović, Vladimir B., "Fabrication and applications of multifunctional nanostructured TiO2" in Proceedings / The Third International Symposium on Agricultural Engineering, ISAE-2017, October, 20t (2017):VII - 10-VII - 18,
https://hdl.handle.net/21.15107/rcub_technorep_3487 .

TY  - JOUR
AU  - Lončarević, Davor
AU  - Vukoje, Ivana D.
AU  - Dostanić, Jasmina
AU  - Bjelajac, Anđelika
AU  - Đorđević, Vesna R.
AU  - Dimitrijević, Suzana
AU  - Nedeljković, Jovan
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3742
AB  - The rod-like Ag2CO3 particles (2-4 3 0.3-0.6 mm, length 3 diameter) were synthesized in water by the precipitation reaction between AgNO3 and NaHCO3 in the presence of polyvinylpyrrolidone. The X-ray diffraction analysis revealed the co-existence of monoclinic and hexagonal phases of Ag2CO3, without presence of impurities. The band gap energy of Ag-2 CO3 was found to be 1.4 eV from the diffuse reflectance spectra. Photocatalytic ability of Ag2CO3 was tested using degradation reaction of the organic dye methylene blue over the wide range of concentrations, as well as under long run working conditions in repeated cycles. The photocatalytic mechanism was discussed in terms of the relative energetics of valence and conduction band. Antimicrobial efficiency of Ag-2 CO3 in dark was tested against Gram-negative bacteria E. coli. The Ag2CO3 dispersions in the concentration range 0.1-1.0 mg/mL ensured 100% reduction of bacteria cells. Time-dependent measurements revealed that reduction rates of bacteria cells vary in ascending order with the content of Ag2CO3. On the other hand, the observed reduction rates of bacteria cells do not depend on the concentration of coexisting free Ag+ ions (from 2 to 25 mg/L) present in Ag2CO3 dispersion.
PB  - Wiley-VCH Verlag Gmbh, Weinheim
T2  - Chemistryselect
T1  - Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods
EP  - 2938
IS  - 10
SP  - 2931
VL  - 2
DO  - 10.1002/slct.201700003
ER  - 

@article{
author = "Lončarević, Davor and Vukoje, Ivana D. and Dostanić, Jasmina and Bjelajac, Anđelika and Đorđević, Vesna R. and Dimitrijević, Suzana and Nedeljković, Jovan",
year = "2017",
abstract = "The rod-like Ag2CO3 particles (2-4 3 0.3-0.6 mm, length 3 diameter) were synthesized in water by the precipitation reaction between AgNO3 and NaHCO3 in the presence of polyvinylpyrrolidone. The X-ray diffraction analysis revealed the co-existence of monoclinic and hexagonal phases of Ag2CO3, without presence of impurities. The band gap energy of Ag-2 CO3 was found to be 1.4 eV from the diffuse reflectance spectra. Photocatalytic ability of Ag2CO3 was tested using degradation reaction of the organic dye methylene blue over the wide range of concentrations, as well as under long run working conditions in repeated cycles. The photocatalytic mechanism was discussed in terms of the relative energetics of valence and conduction band. Antimicrobial efficiency of Ag-2 CO3 in dark was tested against Gram-negative bacteria E. coli. The Ag2CO3 dispersions in the concentration range 0.1-1.0 mg/mL ensured 100% reduction of bacteria cells. Time-dependent measurements revealed that reduction rates of bacteria cells vary in ascending order with the content of Ag2CO3. On the other hand, the observed reduction rates of bacteria cells do not depend on the concentration of coexisting free Ag+ ions (from 2 to 25 mg/L) present in Ag2CO3 dispersion.",
publisher = "Wiley-VCH Verlag Gmbh, Weinheim",
journal = "Chemistryselect",
title = "Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods",
pages = "2938-2931",
number = "10",
volume = "2",
doi = "10.1002/slct.201700003"
}

Lončarević, D., Vukoje, I. D., Dostanić, J., Bjelajac, A., Đorđević, V. R., Dimitrijević, S.,& Nedeljković, J.. (2017). Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods. in Chemistryselect
Wiley-VCH Verlag Gmbh, Weinheim., 2(10), 2931-2938.
https://doi.org/10.1002/slct.201700003

Lončarević D, Vukoje ID, Dostanić J, Bjelajac A, Đorđević VR, Dimitrijević S, Nedeljković J. Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods. in Chemistryselect. 2017;2(10):2931-2938.
doi:10.1002/slct.201700003 .

Lončarević, Davor, Vukoje, Ivana D., Dostanić, Jasmina, Bjelajac, Anđelika, Đorđević, Vesna R., Dimitrijević, Suzana, Nedeljković, Jovan, "Antimicrobial and Photocatalytic Abilities of Ag2CO3 Nano-Rods" in Chemistryselect, 2, no. 10 (2017):2931-2938,
https://doi.org/10.1002/slct.201700003 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Petrović, Rada
AU  - Bundaleski, Nenad
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Rakočević, Zlatko Lj.
AU  - Janaćković, Đorđe
PY  - 2017
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3631
AB  - A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots
EP  - 15046
IS  - 17
SP  - 15040
VL  - 43
DO  - 10.1016/j.ceramint.2017.08.029
ER  - 

@article{
author = "Bjelajac, Anđelika and Đokić, Veljko and Petrović, Rada and Bundaleski, Nenad and Socol, Gabriel and Mihailescu, Ion N. and Rakočević, Zlatko Lj. and Janaćković, Đorđe",
year = "2017",
abstract = "A process of obtaining N-doped TiO2 nanotubes sensitized by CdS nanoparticles is presented, including detailed characterizations performed along the synthesis. Transparent TiO2 films consisting of nanotubes, 2.5 mu m long and of similar to 60 nm inner diameter, were obtained after anodization of a titanium film deposited onto FTO glass substrate. N-doping was achieved by annealing of TiO2 film in ammonia. X-ray Photoelectron Spectroscopy measurements showed that nitrogen was substitutionally incorporated in the TiO2 matrix, with the N:Ti concentration ratio of 1:100. The doping changed the optical properties of the material in such a way that the absorption edge was shifted from 380 nm to 507 nm, as observed from diffuse reflectance spectra. The influence of the microwave (MW) irradiation on the synthesized CdS quantum dots and their optical properties was investigated. It was shown that the diameter of CdS nanoparticles was increased due to releasing of S-2-ions from dimethyl sulfoxide (DMSO) as a consequence of the MW treatment. The (N)TiO2 films were then used as substrates for matrix assisted pulsed laser deposition of the CdS quantum dots with DMSO as a matrix. The laser parameters for the deposition were optimized in order to preserve the nanotubular structure open, the latter being an important feature of this type of photoanode. The structure obtained under optimized conditions has an additional absorption edge shift, reaching 603 nm.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots",
pages = "15046-15040",
number = "17",
volume = "43",
doi = "10.1016/j.ceramint.2017.08.029"
}

Bjelajac, A., Đokić, V., Petrović, R., Bundaleski, N., Socol, G., Mihailescu, I. N., Rakočević, Z. Lj.,& Janaćković, Đ.. (2017). Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. in Ceramics International
Elsevier Sci Ltd, Oxford., 43(17), 15040-15046.
https://doi.org/10.1016/j.ceramint.2017.08.029

Bjelajac A, Đokić V, Petrović R, Bundaleski N, Socol G, Mihailescu IN, Rakočević ZL, Janaćković Đ. Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots. in Ceramics International. 2017;43(17):15040-15046.
doi:10.1016/j.ceramint.2017.08.029 .

Bjelajac, Anđelika, Đokić, Veljko, Petrović, Rada, Bundaleski, Nenad, Socol, Gabriel, Mihailescu, Ion N., Rakočević, Zlatko Lj., Janaćković, Đorđe, "Absorption boost of TiO2 nanotubes by doping with N and sensitization with CdS quantum dots" in Ceramics International, 43, no. 17 (2017):15040-15046,
https://doi.org/10.1016/j.ceramint.2017.08.029 . .

TY  - JOUR
AU  - Deljanin, Isidora
AU  - Antanasijević, Davor
AU  - Bjelajac, Anđelika
AU  - Aničić-Urošević, Mira
AU  - Nikolić, Miroslav
AU  - Perić-Grujić, Aleksandra
AU  - Ristić, Mirjana
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3385
AB  - The concentrations of 15 elements were measured in the leaf samples of Aesculus hippocastanum, Tilia spp., Betula pendula and Acer platanoides collected in May and September of 2014 from four different locations in Belgrade, Serbia. The objective was to assess the chemical characterization of leaf surface and in-wax fractions, as well as the leaf tissue element content, by analyzing untreated, washed with water and washed with chloroform leaf samples, respectively. The combined approach of self-organizing networks (SON) and Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE) aided by Geometrical Analysis for Interactive Aid (GAIA) was used in the interpretation of multiple element loads on/in the tree leaves. The morphological characteristics of the leaf surfaces and the elemental composition of particulate matter (PM) deposited on tree leaves were studied by using scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) detector. The results showed that the amounts of retained and accumulated element concentrations depend on several parameters, such as chemical properties of the element and morphological properties of the leaves. Among the studied species, Tilia spp. was found to be the most effective in the accumulation of elements in leaf tissue (70% of the total element concentration), while A. hippocastanum had the lowest accumulation (54%). After water and chloroform washing, the highest percentages of removal were observed for Al, V, Cr, Cu, Zn, As, Cd and Sb ( gt 40%). The PROMETHEE/SONranking/classifying results were in accordance with the results obtained from the GAIA clustering techniques. The combination of the techniques enabled extraction of additional information from datasets. Therefore, the use of both the ranking and clustering methods could be a useful tool to be applied in biomonitoring studies of trace elements.
PB  - Elsevier, Amsterdam
T2  - Science of the Total Environment
T1  - Chemometrics in biomonitoring: Distribution and correlation of trace elements in tree leaves
EP  - 371
SP  - 361
VL  - 545
DO  - 10.1016/j.scitotenv.2015.12.018
ER  - 

@article{
author = "Deljanin, Isidora and Antanasijević, Davor and Bjelajac, Anđelika and Aničić-Urošević, Mira and Nikolić, Miroslav and Perić-Grujić, Aleksandra and Ristić, Mirjana",
year = "2016",
abstract = "The concentrations of 15 elements were measured in the leaf samples of Aesculus hippocastanum, Tilia spp., Betula pendula and Acer platanoides collected in May and September of 2014 from four different locations in Belgrade, Serbia. The objective was to assess the chemical characterization of leaf surface and in-wax fractions, as well as the leaf tissue element content, by analyzing untreated, washed with water and washed with chloroform leaf samples, respectively. The combined approach of self-organizing networks (SON) and Preference Ranking Organization Method for Enrichment Evaluation (PROMETHEE) aided by Geometrical Analysis for Interactive Aid (GAIA) was used in the interpretation of multiple element loads on/in the tree leaves. The morphological characteristics of the leaf surfaces and the elemental composition of particulate matter (PM) deposited on tree leaves were studied by using scanning electron microscopy (SEM) with energy dispersive spectroscopy (EDS) detector. The results showed that the amounts of retained and accumulated element concentrations depend on several parameters, such as chemical properties of the element and morphological properties of the leaves. Among the studied species, Tilia spp. was found to be the most effective in the accumulation of elements in leaf tissue (70% of the total element concentration), while A. hippocastanum had the lowest accumulation (54%). After water and chloroform washing, the highest percentages of removal were observed for Al, V, Cr, Cu, Zn, As, Cd and Sb ( gt 40%). The PROMETHEE/SONranking/classifying results were in accordance with the results obtained from the GAIA clustering techniques. The combination of the techniques enabled extraction of additional information from datasets. Therefore, the use of both the ranking and clustering methods could be a useful tool to be applied in biomonitoring studies of trace elements.",
publisher = "Elsevier, Amsterdam",
journal = "Science of the Total Environment",
title = "Chemometrics in biomonitoring: Distribution and correlation of trace elements in tree leaves",
pages = "371-361",
volume = "545",
doi = "10.1016/j.scitotenv.2015.12.018"
}

Deljanin, I., Antanasijević, D., Bjelajac, A., Aničić-Urošević, M., Nikolić, M., Perić-Grujić, A.,& Ristić, M.. (2016). Chemometrics in biomonitoring: Distribution and correlation of trace elements in tree leaves. in Science of the Total Environment
Elsevier, Amsterdam., 545, 361-371.
https://doi.org/10.1016/j.scitotenv.2015.12.018

Deljanin I, Antanasijević D, Bjelajac A, Aničić-Urošević M, Nikolić M, Perić-Grujić A, Ristić M. Chemometrics in biomonitoring: Distribution and correlation of trace elements in tree leaves. in Science of the Total Environment. 2016;545:361-371.
doi:10.1016/j.scitotenv.2015.12.018 .

Deljanin, Isidora, Antanasijević, Davor, Bjelajac, Anđelika, Aničić-Urošević, Mira, Nikolić, Miroslav, Perić-Grujić, Aleksandra, Ristić, Mirjana, "Chemometrics in biomonitoring: Distribution and correlation of trace elements in tree leaves" in Science of the Total Environment, 545 (2016):361-371,
https://doi.org/10.1016/j.scitotenv.2015.12.018 . .

TY  - JOUR
AU  - Perišić, Srđan
AU  - Petrović, Miloš
AU  - Bjelajac, Anđelika
AU  - Marinković, Aleksandar
AU  - Stojanović, Dušica
AU  - Trifunović, Dejan
AU  - Radojević, Vesna
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3217
AB  - In this paper, the impact of wood fiber surface modification on mechanical properties of poly-(methyl methacrylate)(PMMA)-wood composite was examined. FTIR analysis has shown that the wood fiber surface modification was accomplished and that the matrix-fiber bond was established. The SEM image of the breakage surface has affirmed the improved adhesion between the fibers and the polymer in the specimen with modified wood fibers. The bond improvement between the wood fibers and the matrix results in increased hardness and a better distribution of strain within the composite. High speed impact testing results have shown that the specimen with the bonding agent can increase the absorbed energy six times when compared to the pure PMMA specimen.
AB  - U ovom radu izvršeno je ispitivanje uticaja modifikacije površine drvenih vlakana na mehanička svojstva kompozita poli-(metil metakrilat)(PMMA)- drvo. FTIR analiza je pokazala da je postignuta modifikacija površine drvenih vlakana, kao i da je ostvarena veza matrica-vlakno. SEM snimak površine loma uzorka takođe potvrđuje bolju adheziju vlakana i polimera u uzorku sa modifikovanim vlaknima drveta. Poboljšanje veze između drvenih vlakana i matrice omogućava veću čvrstoću i bolji prenos opterećenja unutar kompozita. Rezultati ispitivanja udarom kontrolisane energije pokazali su da uzorak sa vezujućim agensom može da poveća apsorbovanu energiju i do šest puta u odnosu na čist PMMA.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - The impact of wood fiber surface modification on physical properties of wood-polymer composites
T1  - Uticaj modifikacije površine vlakana drveta na mehanička svojstva kompozita polimer-drvo
EP  - 662
IS  - 5
SP  - 659
VL  - 71
DO  - 10.5937/tehnika1605659P
ER  - 

@article{
author = "Perišić, Srđan and Petrović, Miloš and Bjelajac, Anđelika and Marinković, Aleksandar and Stojanović, Dušica and Trifunović, Dejan and Radojević, Vesna",
year = "2016",
abstract = "In this paper, the impact of wood fiber surface modification on mechanical properties of poly-(methyl methacrylate)(PMMA)-wood composite was examined. FTIR analysis has shown that the wood fiber surface modification was accomplished and that the matrix-fiber bond was established. The SEM image of the breakage surface has affirmed the improved adhesion between the fibers and the polymer in the specimen with modified wood fibers. The bond improvement between the wood fibers and the matrix results in increased hardness and a better distribution of strain within the composite. High speed impact testing results have shown that the specimen with the bonding agent can increase the absorbed energy six times when compared to the pure PMMA specimen., U ovom radu izvršeno je ispitivanje uticaja modifikacije površine drvenih vlakana na mehanička svojstva kompozita poli-(metil metakrilat)(PMMA)- drvo. FTIR analiza je pokazala da je postignuta modifikacija površine drvenih vlakana, kao i da je ostvarena veza matrica-vlakno. SEM snimak površine loma uzorka takođe potvrđuje bolju adheziju vlakana i polimera u uzorku sa modifikovanim vlaknima drveta. Poboljšanje veze između drvenih vlakana i matrice omogućava veću čvrstoću i bolji prenos opterećenja unutar kompozita. Rezultati ispitivanja udarom kontrolisane energije pokazali su da uzorak sa vezujućim agensom može da poveća apsorbovanu energiju i do šest puta u odnosu na čist PMMA.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "The impact of wood fiber surface modification on physical properties of wood-polymer composites, Uticaj modifikacije površine vlakana drveta na mehanička svojstva kompozita polimer-drvo",
pages = "662-659",
number = "5",
volume = "71",
doi = "10.5937/tehnika1605659P"
}

Perišić, S., Petrović, M., Bjelajac, A., Marinković, A., Stojanović, D., Trifunović, D.,& Radojević, V.. (2016). The impact of wood fiber surface modification on physical properties of wood-polymer composites. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 71(5), 659-662.
https://doi.org/10.5937/tehnika1605659P

Perišić S, Petrović M, Bjelajac A, Marinković A, Stojanović D, Trifunović D, Radojević V. The impact of wood fiber surface modification on physical properties of wood-polymer composites. in Tehnika. 2016;71(5):659-662.
doi:10.5937/tehnika1605659P .

Perišić, Srđan, Petrović, Miloš, Bjelajac, Anđelika, Marinković, Aleksandar, Stojanović, Dušica, Trifunović, Dejan, Radojević, Vesna, "The impact of wood fiber surface modification on physical properties of wood-polymer composites" in Tehnika, 71, no. 5 (2016):659-662,
https://doi.org/10.5937/tehnika1605659P . .

TY  - THES
AU  - Bjelajac, Anđelika
PY  - 2016
UR  - http://eteze.bg.ac.rs/application/showtheses?thesesId=3670
UR  - https://fedorabg.bg.ac.rs/fedora/get/o:12474/bdef:Content/download
UR  - http://vbs.rs/scripts/cobiss?command=DISPLAY&base=70036&RID=48098063
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4635
AB  - In recent decades, many scientific studies have been focused on alternative energy sources due to the growing energy needs of the world's population. Solar energy can cover the entire energy consumption of the world population and meet the future energy needs. Although commercial solar cells based on silicon have the efficiency over 20%, the production costs of this type of solar cells are very high. Therefore, in recent years the great efforts of researchers have been focused on the development of a new and cheaper type of solar cells. Among the studied structures there are solar cells sensitized with quantum dots, whose role is to improve the absorption properties of TiO2 photoanode. Compared to organic dyes as sensitizers, quantum dots are cheaper, more stable and show the multiple exciton generation effect. These cells consist of nanoporous TiO2, whose absorption onset is shifted to longer wavelengths by depositing of nanoparticles of selenium and tellurium compounds on the surface of TiO2. Cadmium sulfide (CdS) has a conduction band edge 0.5 eV lower than the conduction band edge of TiO2, which allows the transfer of the excited electrons from CdS to TiO2, preventing the recombination of electrons with photogenerated holes. Since for the effective electron transfer, the direct contact between the TiO2 and sensitizersis essential, thus it is necessary to provide a large specific surface available for sensitization. Among the investigated TiO2nanostructures, that meet the required criteria, it has been shown that nanotubes allow better performance of the final solar cell compared to TiO2 nanoparticle. Onedimensional nanotubes allow rapid transport of excited electrons and reduce the electron energy loss that happens at nanoparticles interfaces...
AB  - Poslednjih decenija mnoga naučna istraživanja su fokusirana na alternativne izvore energije usled sve većih potreba svetske populacije za energijom. Solarna energija može pokriti celokupnu energetsku potrošnju svetske populacije i zadovoljiti buduće energetske potrebe. Iako komercijalne solarne ćelije na bazi silicijuma imaju efikasnost i preko 20 %, troškovi proizvodnje ovog tipa solarne ćelije su veoma visoki. Zbog toga su veliki napori naučnika poslednjih godina usmereni na razvoj novog i jeftinijeg tipa solarne ćelije. Među izučavanim strukturama su solarne ćelije sa kvantnim tačkama kao senzivatorima, čija je uloga poboljšanje apsorpcionih svojstava fotoanode na bazi TiO2. U poređenju sa organskim bojama kao senzivatorima, kvantne tačke su jeftinije, stabilnije i pokazuju efekat višestrukog pobuđivanja elektrona. Ove ćelije se sastoje od nanoporoznog TiO2, čija je apsorpciona granica pomerena ka većim talasnim dužinama deponovanjem nanočestica jedinjenja halkogenih elemenata na površini TiO2. Kadmijum-sulfid (CdS) ima granicu provodne zone nižu za 0,5 eV od granice provodne zone TiO2, što omogućava transfer pobuđenih elektrona iz CdS u TiO2, sprečavajući rekombinaciju elektrona sa fotogenerisanim šupljinama. S obzirom na to da je za transfer elektrona bitan direktan kontakt između senzivatora i TiO2 neophodno je da se obezbedi velika specifična površina TiO2 dostupna za depoziciju senzivatora. Od izučavanih nanostruktura TiO2, koji zadovoljavaju traženi kriterijum, dokazano je da nanocevi omogućavaju bolje performanse konačne solarne ćelije u odnosu na nanočestični TiO2. Jednodimenzionalnost nanocevi omogućava ubrzan transport...
PB  - Univerzitet u Beogradu, Tehnološko-metalurški fakultet
T1  - Absorption properties enhancement of the photoanode with titanium dioxide nanotubes by deposition of cadmium sulfide via different techniques
T1  - Poboljšanje apsorpcionih svojstava fotoanode na bazi nanocevi titan(IV)-oksida deponovanjem kadmijum-sulfida različitim tehnikama
UR  - https://hdl.handle.net/21.15107/rcub_technorep_4635
ER  - 

@phdthesis{
author = "Bjelajac, Anđelika",
year = "2016",
abstract = "In recent decades, many scientific studies have been focused on alternative energy sources due to the growing energy needs of the world's population. Solar energy can cover the entire energy consumption of the world population and meet the future energy needs. Although commercial solar cells based on silicon have the efficiency over 20%, the production costs of this type of solar cells are very high. Therefore, in recent years the great efforts of researchers have been focused on the development of a new and cheaper type of solar cells. Among the studied structures there are solar cells sensitized with quantum dots, whose role is to improve the absorption properties of TiO2 photoanode. Compared to organic dyes as sensitizers, quantum dots are cheaper, more stable and show the multiple exciton generation effect. These cells consist of nanoporous TiO2, whose absorption onset is shifted to longer wavelengths by depositing of nanoparticles of selenium and tellurium compounds on the surface of TiO2. Cadmium sulfide (CdS) has a conduction band edge 0.5 eV lower than the conduction band edge of TiO2, which allows the transfer of the excited electrons from CdS to TiO2, preventing the recombination of electrons with photogenerated holes. Since for the effective electron transfer, the direct contact between the TiO2 and sensitizersis essential, thus it is necessary to provide a large specific surface available for sensitization. Among the investigated TiO2nanostructures, that meet the required criteria, it has been shown that nanotubes allow better performance of the final solar cell compared to TiO2 nanoparticle. Onedimensional nanotubes allow rapid transport of excited electrons and reduce the electron energy loss that happens at nanoparticles interfaces..., Poslednjih decenija mnoga naučna istraživanja su fokusirana na alternativne izvore energije usled sve većih potreba svetske populacije za energijom. Solarna energija može pokriti celokupnu energetsku potrošnju svetske populacije i zadovoljiti buduće energetske potrebe. Iako komercijalne solarne ćelije na bazi silicijuma imaju efikasnost i preko 20 %, troškovi proizvodnje ovog tipa solarne ćelije su veoma visoki. Zbog toga su veliki napori naučnika poslednjih godina usmereni na razvoj novog i jeftinijeg tipa solarne ćelije. Među izučavanim strukturama su solarne ćelije sa kvantnim tačkama kao senzivatorima, čija je uloga poboljšanje apsorpcionih svojstava fotoanode na bazi TiO2. U poređenju sa organskim bojama kao senzivatorima, kvantne tačke su jeftinije, stabilnije i pokazuju efekat višestrukog pobuđivanja elektrona. Ove ćelije se sastoje od nanoporoznog TiO2, čija je apsorpciona granica pomerena ka većim talasnim dužinama deponovanjem nanočestica jedinjenja halkogenih elemenata na površini TiO2. Kadmijum-sulfid (CdS) ima granicu provodne zone nižu za 0,5 eV od granice provodne zone TiO2, što omogućava transfer pobuđenih elektrona iz CdS u TiO2, sprečavajući rekombinaciju elektrona sa fotogenerisanim šupljinama. S obzirom na to da je za transfer elektrona bitan direktan kontakt između senzivatora i TiO2 neophodno je da se obezbedi velika specifična površina TiO2 dostupna za depoziciju senzivatora. Od izučavanih nanostruktura TiO2, koji zadovoljavaju traženi kriterijum, dokazano je da nanocevi omogućavaju bolje performanse konačne solarne ćelije u odnosu na nanočestični TiO2. Jednodimenzionalnost nanocevi omogućava ubrzan transport...",
publisher = "Univerzitet u Beogradu, Tehnološko-metalurški fakultet",
title = "Absorption properties enhancement of the photoanode with titanium dioxide nanotubes by deposition of cadmium sulfide via different techniques, Poboljšanje apsorpcionih svojstava fotoanode na bazi nanocevi titan(IV)-oksida deponovanjem kadmijum-sulfida različitim tehnikama",
url = "https://hdl.handle.net/21.15107/rcub_technorep_4635"
}

Bjelajac, A.. (2016). Absorption properties enhancement of the photoanode with titanium dioxide nanotubes by deposition of cadmium sulfide via different techniques. 
Univerzitet u Beogradu, Tehnološko-metalurški fakultet..
https://hdl.handle.net/21.15107/rcub_technorep_4635

Bjelajac A. Absorption properties enhancement of the photoanode with titanium dioxide nanotubes by deposition of cadmium sulfide via different techniques. 2016;.
https://hdl.handle.net/21.15107/rcub_technorep_4635 .

Bjelajac, Anđelika, "Absorption properties enhancement of the photoanode with titanium dioxide nanotubes by deposition of cadmium sulfide via different techniques" (2016),
https://hdl.handle.net/21.15107/rcub_technorep_4635 .

TY  - JOUR
AU  - Albrbar, Asma Juma
AU  - Đokić, Veljko
AU  - Bjelajac, Anđelika
AU  - Kovač, Janez
AU  - Ćirković, Jovana
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe
AU  - Petrović, Rada
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3330
AB  - Visible-light active mesoporous N,S-doped and co-doped anatase TiO2 powders were synthesized by non-hydrolytic sol-gel route, starting from TiCl4 and Ti((OPr)-Pr-i)(4) dissolved in cyclohexane or dimethyl sulfoxide, later used as a S-doping agent. After drying in an inert atmosphere, the gels were annealed at 500 degrees C for 3 h, in air or ammonia flow, later used for N-doping. The undoped titania powder, obtained by annealing in air of the cyclohexane-based gel, was also annealed in ammonia to deduce which method is more efficient for N-doping: gel or powder annealing. The post-annealing in air after annealing in ammonia was optimized to attain the best photocatalytic activity for dye degradation under simulated visible light. The size of anatase nanocrystals decreased by doping and the specific surface area of the powders increased. The XPS analysis confirmed a successful substitution of Ti4+ by S(4+) and/or S(6+), which caused a very small band-gap narrowing. The gel annealing in ammonia was much more efficient for interstitial nitrogen incorporation in TiO2 lattice than the powder annealing. The annealing in ammonia of the gel synthesized with dimethyl sulfoxide provided the highest visible-light activity owing to high specific surface area, appropriate mesoporosity and high photoabsorption due to efficient N,S co-doping.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route
EP  - 16728
IS  - 15
SP  - 16718
VL  - 42
DO  - 10.1016/j.ceramint.2016.07.144
ER  - 

@article{
author = "Albrbar, Asma Juma and Đokić, Veljko and Bjelajac, Anđelika and Kovač, Janez and Ćirković, Jovana and Mitrić, Miodrag and Janaćković, Đorđe and Petrović, Rada",
year = "2016",
abstract = "Visible-light active mesoporous N,S-doped and co-doped anatase TiO2 powders were synthesized by non-hydrolytic sol-gel route, starting from TiCl4 and Ti((OPr)-Pr-i)(4) dissolved in cyclohexane or dimethyl sulfoxide, later used as a S-doping agent. After drying in an inert atmosphere, the gels were annealed at 500 degrees C for 3 h, in air or ammonia flow, later used for N-doping. The undoped titania powder, obtained by annealing in air of the cyclohexane-based gel, was also annealed in ammonia to deduce which method is more efficient for N-doping: gel or powder annealing. The post-annealing in air after annealing in ammonia was optimized to attain the best photocatalytic activity for dye degradation under simulated visible light. The size of anatase nanocrystals decreased by doping and the specific surface area of the powders increased. The XPS analysis confirmed a successful substitution of Ti4+ by S(4+) and/or S(6+), which caused a very small band-gap narrowing. The gel annealing in ammonia was much more efficient for interstitial nitrogen incorporation in TiO2 lattice than the powder annealing. The annealing in ammonia of the gel synthesized with dimethyl sulfoxide provided the highest visible-light activity owing to high specific surface area, appropriate mesoporosity and high photoabsorption due to efficient N,S co-doping.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route",
pages = "16728-16718",
number = "15",
volume = "42",
doi = "10.1016/j.ceramint.2016.07.144"
}

Albrbar, A. J., Đokić, V., Bjelajac, A., Kovač, J., Ćirković, J., Mitrić, M., Janaćković, Đ.,& Petrović, R.. (2016). Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route. in Ceramics International
Elsevier Sci Ltd, Oxford., 42(15), 16718-16728.
https://doi.org/10.1016/j.ceramint.2016.07.144

Albrbar AJ, Đokić V, Bjelajac A, Kovač J, Ćirković J, Mitrić M, Janaćković Đ, Petrović R. Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route. in Ceramics International. 2016;42(15):16718-16728.
doi:10.1016/j.ceramint.2016.07.144 .

Albrbar, Asma Juma, Đokić, Veljko, Bjelajac, Anđelika, Kovač, Janez, Ćirković, Jovana, Mitrić, Miodrag, Janaćković, Đorđe, Petrović, Rada, "Visible-light active mesoporous, nanocrystalline N,S-doped and co-doped titania photocatalysts synthesized by non-hydrolytic sol-gel route" in Ceramics International, 42, no. 15 (2016):16718-16728,
https://doi.org/10.1016/j.ceramint.2016.07.144 . .

TY  - JOUR
AU  - Bjelajac, Anđelika
AU  - Petrović, Rada
AU  - Socol, Gabriel
AU  - Mihailescu, Ion N.
AU  - Enculescu, Monica
AU  - Grurriezescu, Valentina
AU  - Pavlović, Vladimir
AU  - Janaćković, Đorđe
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3430
AB  - Within this study a matrix assisted pulsed laser evaporation technique was employed for deposition of CdS quantum dots onto TiO2 nanotubes. The number of laser pulses and laser fluence were varied to control the amount of CdS deposit. TiO2 nanotubes were obtained via anodization technique of sputtered Ti film on FTO glass. For CdS synthesis, dimethyl sulfoxide (DMSO) was used as a matrix of the target which absorbs radiation of KrF* laser (lambda=248 nm), then evaporates enabling the deposition of CdS quantum dots dispersed into DMSO. This study showed that the size of the CdS nanoparticles synthetized in DMSO can be controlled with microwave treatment that causes the release of S2- ions from DMSO for creation of CdS nuclei and/or their further growth. The optimization of CdS synthesis is achieved by varying the duration of the microwave treatment and the microwave power. The obtained TiO2 photo anodes with different amounts of CdS were assembled with PbS cathodes and the polysulfide electrolyte was injected between. The influence of amount of CdS deposit and the microwave treatment of CdS on photovoltaic performance of the fabricated solar cells were analyzed under AM1.5. The results showed that microwave treatment produced a Cd(S)-DMSO complex onto CdS nanoparticles which led to a higher current density of the solar cells obtained using microwave treated CdS target. Also, the increase of CdS content by increasing the number of laser pulses provided the enhance of I-V characteristics of the solar cells.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method
EP  - 9017
IS  - 7
SP  - 9011
VL  - 42
DO  - 10.1016/j.ceramint.2016.02.159
ER  - 

@article{
author = "Bjelajac, Anđelika and Petrović, Rada and Socol, Gabriel and Mihailescu, Ion N. and Enculescu, Monica and Grurriezescu, Valentina and Pavlović, Vladimir and Janaćković, Đorđe",
year = "2016",
abstract = "Within this study a matrix assisted pulsed laser evaporation technique was employed for deposition of CdS quantum dots onto TiO2 nanotubes. The number of laser pulses and laser fluence were varied to control the amount of CdS deposit. TiO2 nanotubes were obtained via anodization technique of sputtered Ti film on FTO glass. For CdS synthesis, dimethyl sulfoxide (DMSO) was used as a matrix of the target which absorbs radiation of KrF* laser (lambda=248 nm), then evaporates enabling the deposition of CdS quantum dots dispersed into DMSO. This study showed that the size of the CdS nanoparticles synthetized in DMSO can be controlled with microwave treatment that causes the release of S2- ions from DMSO for creation of CdS nuclei and/or their further growth. The optimization of CdS synthesis is achieved by varying the duration of the microwave treatment and the microwave power. The obtained TiO2 photo anodes with different amounts of CdS were assembled with PbS cathodes and the polysulfide electrolyte was injected between. The influence of amount of CdS deposit and the microwave treatment of CdS on photovoltaic performance of the fabricated solar cells were analyzed under AM1.5. The results showed that microwave treatment produced a Cd(S)-DMSO complex onto CdS nanoparticles which led to a higher current density of the solar cells obtained using microwave treated CdS target. Also, the increase of CdS content by increasing the number of laser pulses provided the enhance of I-V characteristics of the solar cells.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method",
pages = "9017-9011",
number = "7",
volume = "42",
doi = "10.1016/j.ceramint.2016.02.159"
}

Bjelajac, A., Petrović, R., Socol, G., Mihailescu, I. N., Enculescu, M., Grurriezescu, V., Pavlović, V.,& Janaćković, Đ.. (2016). CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method. in Ceramics International
Elsevier Sci Ltd, Oxford., 42(7), 9011-9017.
https://doi.org/10.1016/j.ceramint.2016.02.159

Bjelajac A, Petrović R, Socol G, Mihailescu IN, Enculescu M, Grurriezescu V, Pavlović V, Janaćković Đ. CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method. in Ceramics International. 2016;42(7):9011-9017.
doi:10.1016/j.ceramint.2016.02.159 .

Bjelajac, Anđelika, Petrović, Rada, Socol, Gabriel, Mihailescu, Ion N., Enculescu, Monica, Grurriezescu, Valentina, Pavlović, Vladimir, Janaćković, Đorđe, "CdS quantum dots sensitized TiO2 nanotubes by matrix assisted pulsed laser evaporation method" in Ceramics International, 42, no. 7 (2016):9011-9017,
https://doi.org/10.1016/j.ceramint.2016.02.159 . .