TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Đokić, Veljko
AU  - Blagojević, Vladimir A.
AU  - Pavlović, Vera P.
AU  - Ćirković, Jovana
AU  - Horváth, Endre
AU  - Forró, László
AU  - Karoui, Abdennaceur
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2023
UR  - https://dais.sanu.ac.rs/123456789/14229
AB  - In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.
PB  - MDPI
T2  - Catalysts
T1  - Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal
SP  - 352
VL  - 13
IS  - 2
DO  - 10.3390/catal13020352
UR  - https://hdl.handle.net/21.15107/rcub_dais_14229
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Đokić, Veljko and Blagojević, Vladimir A. and Pavlović, Vera P. and Ćirković, Jovana and Horváth, Endre and Forró, László and Karoui, Abdennaceur and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2023",
abstract = "In this study, we report the influence of vanadium oxide (VO), as a photosensitive component, on the photoactivity of TiO2 nanotubes (TNTs). A series of TNTs of varying tube diameter were synthesized by the anodization of titanium foils at different voltages, while vanadium oxide was deposited on TNTs by wet chemical deposition. An improvement in the optical properties of nanotubes was observed after the deposition of vanadium oxide. An improvement in the optical properties (redshift in UV-Vis spectra) of TNTs and TNT/VO was noted. The photocatalytic activity was improved with increasing tube diameter, while it was weakened after the deposition of VO. Furthermore, photoactivity was investigated in photodiodes based on TNTs or TNT/VO and single crystals of CH3NH3PbI3. The photoelectric measurement revealed that different TNT diameters did not influence the I-V characteristic of the photodiodes, while the deposition of VO improved the photocurrent for smaller TNTs.",
publisher = "MDPI",
journal = "Catalysts",
title = "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal",
pages = "352",
volume = "13",
number = "2",
doi = "10.3390/catal13020352",
url = "https://hdl.handle.net/21.15107/rcub_dais_14229"
}

Vujančević, J., Andričević, P., Đokić, V., Blagojević, V. A., Pavlović, V. P., Ćirković, J., Horváth, E., Forró, L., Karoui, A., Pavlović, V. B.,& Janaćković, Đ.. (2023). Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts
MDPI., 13(2), 352.
https://doi.org/10.3390/catal13020352
https://hdl.handle.net/21.15107/rcub_dais_14229

Vujančević J, Andričević P, Đokić V, Blagojević VA, Pavlović VP, Ćirković J, Horváth E, Forró L, Karoui A, Pavlović VB, Janaćković Đ. Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal. in Catalysts. 2023;13(2):352.
doi:10.3390/catal13020352
https://hdl.handle.net/21.15107/rcub_dais_14229 .

Vujančević, Jelena, Andričević, Pavao, Đokić, Veljko, Blagojević, Vladimir A., Pavlović, Vera P., Ćirković, Jovana, Horváth, Endre, Forró, László, Karoui, Abdennaceur, Pavlović, Vladimir B., Janaćković, Đorđe, "Effect of the Deposition of Vanadium-Oxide on the Photocatalytic Activity of TiO2 Nanotubes and Its Photodiode Performance Interfaced with CH3NH3PbI3 Single Crystal" in Catalysts, 13, no. 2 (2023):352,
https://doi.org/10.3390/catal13020352 .,
https://hdl.handle.net/21.15107/rcub_dais_14229 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Horváth, Endre
AU  - Forró, Laszlo
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13597
AB  - The negative consequences of the modern world are environmental pollution. To decrease it, a lot of research is focused on finding solution for its remediation. Photoactive materials have ability to utilize solar energy for the degradation of organic and inorganic pollutants. Among different photoactive material TiO2 has advantages due to its non-toxicity, chemical stability and corrosion resistance. The aim of this study was to investigate the synergetic effect of nitrogen incorporation into crystal structure of TiO2 and deposition of CdS onto amelioration of the photocatalytic degradation of methylen orange compared to the pristine TiO2. For that purpose TiO2 nanotubes were obtained by anodization of titanium foil in HF containing electrolyte. To achieve crystal structure and at the same time to introduce nitrogen in TiO2, the samples were annealed in ammonia atmosphere at 450 °C, for different time of annealing. The highest amount of nitrogen was achieved for the shortest time of annealing (30 min). Beside that, it was observed that the highest level of interstitial nitrogen was also achieved for the shortest time of annealing. Further, CdS quantum dots (QDs) were deposited on the nitrogen doped TiO2 nanotubes via an ex-situ method (using binding reagent). According to the FESEM micrographs, a partial agglomeration of CdS QDs on some domaines on top of the nanotubes was observed. By performing the DRS, the improvement of the optical response after nitrogen doping and deposition of CdS was demonstrated. The sample with the highest amount of total nitrogen and interstitial nitrogen in combination with deposition CdS QDs exhibited the highest photocatalytic efficiency.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
T1  - Photocatalytic activity of N-TiO2 nanotubes decorated with CdS QD
SP  - 140
EP  - 140
UR  - https://hdl.handle.net/21.15107/rcub_dais_13597
ER  - 

@conference{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Horváth, Endre and Forró, Laszlo and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2022",
abstract = "The negative consequences of the modern world are environmental pollution. To decrease it, a lot of research is focused on finding solution for its remediation. Photoactive materials have ability to utilize solar energy for the degradation of organic and inorganic pollutants. Among different photoactive material TiO2 has advantages due to its non-toxicity, chemical stability and corrosion resistance. The aim of this study was to investigate the synergetic effect of nitrogen incorporation into crystal structure of TiO2 and deposition of CdS onto amelioration of the photocatalytic degradation of methylen orange compared to the pristine TiO2. For that purpose TiO2 nanotubes were obtained by anodization of titanium foil in HF containing electrolyte. To achieve crystal structure and at the same time to introduce nitrogen in TiO2, the samples were annealed in ammonia atmosphere at 450 °C, for different time of annealing. The highest amount of nitrogen was achieved for the shortest time of annealing (30 min). Beside that, it was observed that the highest level of interstitial nitrogen was also achieved for the shortest time of annealing. Further, CdS quantum dots (QDs) were deposited on the nitrogen doped TiO2 nanotubes via an ex-situ method (using binding reagent). According to the FESEM micrographs, a partial agglomeration of CdS QDs on some domaines on top of the nanotubes was observed. By performing the DRS, the improvement of the optical response after nitrogen doping and deposition of CdS was demonstrated. The sample with the highest amount of total nitrogen and interstitial nitrogen in combination with deposition CdS QDs exhibited the highest photocatalytic efficiency.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022",
title = "Photocatalytic activity of N-TiO2 nanotubes decorated with CdS QD",
pages = "140-140",
url = "https://hdl.handle.net/21.15107/rcub_dais_13597"
}

Vujančević, J., Bjelajac, A., Horváth, E., Forró, L., Pavlović, V. B.,& Janaćković, Đ.. (2022). Photocatalytic activity of N-TiO2 nanotubes decorated with CdS QD. in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
Belgrade : Materials Research Society of Serbia., 140-140.
https://hdl.handle.net/21.15107/rcub_dais_13597

Vujančević J, Bjelajac A, Horváth E, Forró L, Pavlović VB, Janaćković Đ. Photocatalytic activity of N-TiO2 nanotubes decorated with CdS QD. in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022. 2022;:140-140.
https://hdl.handle.net/21.15107/rcub_dais_13597 .

Vujančević, Jelena, Bjelajac, Anđelika, Horváth, Endre, Forró, Laszlo, Pavlović, Vladimir B., Janaćković, Đorđe, "Photocatalytic activity of N-TiO2 nanotubes decorated with CdS QD" in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022 (2022):140-140,
https://hdl.handle.net/21.15107/rcub_dais_13597 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Blagojević, Vladimir A.
AU  - Andričević, Pavao
AU  - Pavlović, Vera P.
AU  - Horváth, Endre
AU  - Forró, László
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13627
AB  - The aim of this study was to investigate the influence of the deposition of vanadium oxide epitaxial layer on the photoresponse of TiO2/CH3NH3PbI3 heterojunction. TiO2 nanotube array was synthesized via anodization of titanium foil at three different voltages. After annealing at 450 °C, vanadium oxide was deposited by direct deposition from vanadyl(IV) sulfate solution. Microstructure analysis has been used for the investigation of the influence of different voltages of anodization on tube diameter. Spectroscopy measurements pointed out the red shift in diffusion reflectance spectra after deposition of vanadium oxide. The presence of V5+ oxidation state has been detected on the surface of nanotube arrays by chemical analysis. CH3NH3PbI3 monocrystal was dry pressed on top of the nanotubes in order to make a photodiode. The current-voltage characteristics of the photodiode were recorded and it was observed that the sample with the smallest wall thickness and higher amount of vanadium has the best photocurrent response.
PB  - Belgrade : Serbian Ceramic Society
C3  - Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
T1  - Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3
SP  - 90
EP  - 90
UR  - https://hdl.handle.net/21.15107/rcub_dais_13627
ER  - 

@conference{
author = "Vujančević, Jelena and Blagojević, Vladimir A. and Andričević, Pavao and Pavlović, Vera P. and Horváth, Endre and Forró, László and Vlahović, Branislav and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2022",
abstract = "The aim of this study was to investigate the influence of the deposition of vanadium oxide epitaxial layer on the photoresponse of TiO2/CH3NH3PbI3 heterojunction. TiO2 nanotube array was synthesized via anodization of titanium foil at three different voltages. After annealing at 450 °C, vanadium oxide was deposited by direct deposition from vanadyl(IV) sulfate solution. Microstructure analysis has been used for the investigation of the influence of different voltages of anodization on tube diameter. Spectroscopy measurements pointed out the red shift in diffusion reflectance spectra after deposition of vanadium oxide. The presence of V5+ oxidation state has been detected on the surface of nanotube arrays by chemical analysis. CH3NH3PbI3 monocrystal was dry pressed on top of the nanotubes in order to make a photodiode. The current-voltage characteristics of the photodiode were recorded and it was observed that the sample with the smallest wall thickness and higher amount of vanadium has the best photocurrent response.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.",
title = "Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3",
pages = "90-90",
url = "https://hdl.handle.net/21.15107/rcub_dais_13627"
}

Vujančević, J., Blagojević, V. A., Andričević, P., Pavlović, V. P., Horváth, E., Forró, L., Vlahović, B., Pavlović, V. B.,& Janaćković, Đ.. (2022). Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.
Belgrade : Serbian Ceramic Society., 90-90.
https://hdl.handle.net/21.15107/rcub_dais_13627

Vujančević J, Blagojević VA, Andričević P, Pavlović VP, Horváth E, Forró L, Vlahović B, Pavlović VB, Janaćković Đ. Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3. in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022.. 2022;:90-90.
https://hdl.handle.net/21.15107/rcub_dais_13627 .

Vujančević, Jelena, Blagojević, Vladimir A., Andričević, Pavao, Pavlović, Vera P., Horváth, Endre, Forró, László, Vlahović, Branislav, Pavlović, Vladimir B., Janaćković, Đorđe, "Characteristic of photodiode based on vanadium oxide-TiO2 nanotubes/CH3NH3PbI3" in Program and the Book of abstracts / Serbian Ceramic Society Conference Advanced Ceramics and Application X New Frontiers in Multifunctional Material Science and Processing, Serbia, Belgrade, 26-27. September 2022. (2022):90-90,
https://hdl.handle.net/21.15107/rcub_dais_13627 .

TY  - JOUR
AU  - Stefanović, Milica P.
AU  - Vujančević, Jelena
AU  - Petrović, Rada P.
AU  - Stevanović, Marija S.
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/14853
AB  - Organsko-neorganski perovskiti su privukli veliku pažnju istraživača zbog visoke apsorpcije u vidljivomdelu spektra i jeftine proizvodnje. Apsorbovanjem svetlosti dolazi do stvaranja para elektron-šupljina.U cilju razdvajanja nosilaca naelektrisanja, perovskit se kombinuje sa TiO2 što ima za posledicuspontani prelazak elektrona sa perovskita na TiO2. Ovo istraživanje je imalo za cilj povećanje dodirnepovršine između nanocevi TiO2 i perovskita punjenjem nanocevi perovskitnim materijalom. Rastvormetilamonijum olovo(II)-bromidnog perovskita (CH3NH3PbBr3) u dimetilformamidu (DMF) jedeponovan na anodizacijom sintetisane TiO2 nanocevi pomoću sistema visokog vakuuma i inertnoggasa. Postupak je uključivao degazaciju uzorka u visokom vakuumu u trajanju od 3 h na 200 °C, hlađenjeuzorka, a zatim nanošenje rastvora CH3NH3PbBr3 u DMF-u, uz naknadni tretman inertnim gasom (N2)u cilju ostvarenja natpritiska, što je omogućilo punjenje nanocevi perovskitnim materijalom. Difuznorefleksiona spektroskopija pokazala je da taloženje CH3NH3PbBr3 poboljšava apsorpciona svojstvaTiO2 nanocevi. I-V karakteristike uzorka pokazale su fotodiodno ponašanje i histerezisnu krivu, koja jekarakteristična za perovskitni materijal. Vrednost struje uzorka snimljenim pod vidljivom svetlošćuiznosila je 46 μA bez primene prednapona, dok je nakon primene prednapona iznosila 76 μA. Rezultatirada ukazuju da je napravljena perovskitna fotodioda sa povećanim kontaktom između TiO2 i perovskita,koja predstavlja osnovu za buduću konstrukciju solarnih ćelija.
AB  - Organic-inorganic perovskites have attracted much attention from researchers due to their high absorption in the visible part of the spectrum and low-cost fabrication. After absorption of the light, electron-hole pairs are formed. To separate electron-hole pairs and reduce recombination, perovskite is combined with TiO2 which has as a consequence, a spontaneous transition of electrons from perovskite to TiO2. This research aims to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material. The solution of methylammonium lead bromide perovskite (CH3NH3PbBr3) in dimethylformamide (DMF) was deposited on anodically synthesized TiO2 nanotubes by the high vacuum system and inert gas. The procedure involved degassation of the sample under high vacuum for 3 h at 200 °C, cooling of the sample, and putting the solution of CH3NH3PbBr3 in DMF, after which it was treated with inert gas (N2), as an overpressure which enabled the filling of the nanotubes with perovskite material. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of CH3NH3PbBr3 improves the absorption properties of TiO2 nanotubes. The I-V characteristics of the sample showed photodiode behavior and characteristic hysteresis curve for perovskite material. The value of current under visible light for the sample without preconditioning was 46 mA, while after preconditioning value of current was 76 mA. The results indicate that a perovskite photodiode with increased contact between TiO2 and perovskite was made, which is the basis for future solar cell construction.
PB  - Savez inženjera i tehničara Srbije
T2  - Tehnika
T1  - Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora
T1  - Improvement of absorption properties of TiO2 nanotubes by using CH3NH3PbBr3 perovskite as photosensitizer
SP  - 15
EP  - 21
VL  - 31
IS  - 1
DO  - 10.5937/tehnika2201015S
UR  - https://hdl.handle.net/21.15107/rcub_dais_14853
ER  - 

@article{
author = "Stefanović, Milica P. and Vujančević, Jelena and Petrović, Rada P. and Stevanović, Marija S. and Janaćković, Đorđe",
year = "2022",
abstract = "Organsko-neorganski perovskiti su privukli veliku pažnju istraživača zbog visoke apsorpcije u vidljivomdelu spektra i jeftine proizvodnje. Apsorbovanjem svetlosti dolazi do stvaranja para elektron-šupljina.U cilju razdvajanja nosilaca naelektrisanja, perovskit se kombinuje sa TiO2 što ima za posledicuspontani prelazak elektrona sa perovskita na TiO2. Ovo istraživanje je imalo za cilj povećanje dodirnepovršine između nanocevi TiO2 i perovskita punjenjem nanocevi perovskitnim materijalom. Rastvormetilamonijum olovo(II)-bromidnog perovskita (CH3NH3PbBr3) u dimetilformamidu (DMF) jedeponovan na anodizacijom sintetisane TiO2 nanocevi pomoću sistema visokog vakuuma i inertnoggasa. Postupak je uključivao degazaciju uzorka u visokom vakuumu u trajanju od 3 h na 200 °C, hlađenjeuzorka, a zatim nanošenje rastvora CH3NH3PbBr3 u DMF-u, uz naknadni tretman inertnim gasom (N2)u cilju ostvarenja natpritiska, što je omogućilo punjenje nanocevi perovskitnim materijalom. Difuznorefleksiona spektroskopija pokazala je da taloženje CH3NH3PbBr3 poboljšava apsorpciona svojstvaTiO2 nanocevi. I-V karakteristike uzorka pokazale su fotodiodno ponašanje i histerezisnu krivu, koja jekarakteristična za perovskitni materijal. Vrednost struje uzorka snimljenim pod vidljivom svetlošćuiznosila je 46 μA bez primene prednapona, dok je nakon primene prednapona iznosila 76 μA. Rezultatirada ukazuju da je napravljena perovskitna fotodioda sa povećanim kontaktom između TiO2 i perovskita,koja predstavlja osnovu za buduću konstrukciju solarnih ćelija., Organic-inorganic perovskites have attracted much attention from researchers due to their high absorption in the visible part of the spectrum and low-cost fabrication. After absorption of the light, electron-hole pairs are formed. To separate electron-hole pairs and reduce recombination, perovskite is combined with TiO2 which has as a consequence, a spontaneous transition of electrons from perovskite to TiO2. This research aims to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material. The solution of methylammonium lead bromide perovskite (CH3NH3PbBr3) in dimethylformamide (DMF) was deposited on anodically synthesized TiO2 nanotubes by the high vacuum system and inert gas. The procedure involved degassation of the sample under high vacuum for 3 h at 200 °C, cooling of the sample, and putting the solution of CH3NH3PbBr3 in DMF, after which it was treated with inert gas (N2), as an overpressure which enabled the filling of the nanotubes with perovskite material. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of CH3NH3PbBr3 improves the absorption properties of TiO2 nanotubes. The I-V characteristics of the sample showed photodiode behavior and characteristic hysteresis curve for perovskite material. The value of current under visible light for the sample without preconditioning was 46 mA, while after preconditioning value of current was 76 mA. The results indicate that a perovskite photodiode with increased contact between TiO2 and perovskite was made, which is the basis for future solar cell construction.",
publisher = "Savez inženjera i tehničara Srbije",
journal = "Tehnika",
title = "Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora, Improvement of absorption properties of TiO2 nanotubes by using CH3NH3PbBr3 perovskite as photosensitizer",
pages = "15-21",
volume = "31",
number = "1",
doi = "10.5937/tehnika2201015S",
url = "https://hdl.handle.net/21.15107/rcub_dais_14853"
}

Stefanović, M. P., Vujančević, J., Petrović, R. P., Stevanović, M. S.,& Janaćković, Đ.. (2022). Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora. in Tehnika
Savez inženjera i tehničara Srbije., 31(1), 15-21.
https://doi.org/10.5937/tehnika2201015S
https://hdl.handle.net/21.15107/rcub_dais_14853

Stefanović MP, Vujančević J, Petrović RP, Stevanović MS, Janaćković Đ. Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora. in Tehnika. 2022;31(1):15-21.
doi:10.5937/tehnika2201015S
https://hdl.handle.net/21.15107/rcub_dais_14853 .

Stefanović, Milica P., Vujančević, Jelena, Petrović, Rada P., Stevanović, Marija S., Janaćković, Đorđe, "Poboljšanje apsorpcionih svojstava TiO2 nanocevi pomoću CH3NH3PbBr3 perovskita kao fotosenzitivizatora" in Tehnika, 31, no. 1 (2022):15-21,
https://doi.org/10.5937/tehnika2201015S .,
https://hdl.handle.net/21.15107/rcub_dais_14853 .

TY  - CONF
AU  - Stefanović, Milica
AU  - Lukić, Ivana
AU  - Vujančević, Jelena
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13636
AB  - The organo-inorganic perovskites are extraordinary materials that have recently revolutionized the field of photovoltaics due to their low-cost fabrication and high optical absorption. In a short period, they reached great efficiency. Many parameters which affect the quality of perovskite films can be optimized, so the efficiency of these devices can be further improved. In perovskite solar cells, the perovskite layer is an active layer that absorbs the visible part of the spectrum, resulting in the formation of the electron-hole pair. To decrease the recombination of charge carriers, the construction of solar cells requires the existence of two additional layers in order to separate the holes and electrons. TiO2 could be used as an electron transport layer because its conduction band (CB) lies under the CB of perovskite. In that way, electrons diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure provides a one-dimensional transmission channel for the charge carriers, which resulting in faster carrier transport. Perovskite methylammonium lead bromide (MAPbBr3) was coupled with TiO2 nanotube arrays which were synthesized by anodization of Ti foil and annealed at 450 °C. The most used methods for deposition of perovskite materials on mesoporous and planar TiO2 are: one-step deposition, two-step sequential deposition, and vapor-assisted solution processing. Disadvantage of these methods is a small contact area between TiO2 and perovskite. The aim of this research was to increase the contact surface of the perovskite and TiO2 nanotubes by filling the nanotubes with the perovskite material in order to improve electron transport.
PB  - Belgrade : Serbian Academy of Sciences and Arts
C3  - Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022
T1  - Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells
SP  - 188
EP  - 189
UR  - https://hdl.handle.net/21.15107/rcub_dais_13636
ER  - 

@conference{
author = "Stefanović, Milica and Lukić, Ivana and Vujančević, Jelena and Petrović, Rada and Janaćković, Đorđe",
year = "2022",
abstract = "The organo-inorganic perovskites are extraordinary materials that have recently revolutionized the field of photovoltaics due to their low-cost fabrication and high optical absorption. In a short period, they reached great efficiency. Many parameters which affect the quality of perovskite films can be optimized, so the efficiency of these devices can be further improved. In perovskite solar cells, the perovskite layer is an active layer that absorbs the visible part of the spectrum, resulting in the formation of the electron-hole pair. To decrease the recombination of charge carriers, the construction of solar cells requires the existence of two additional layers in order to separate the holes and electrons. TiO2 could be used as an electron transport layer because its conduction band (CB) lies under the CB of perovskite. In that way, electrons diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure provides a one-dimensional transmission channel for the charge carriers, which resulting in faster carrier transport. Perovskite methylammonium lead bromide (MAPbBr3) was coupled with TiO2 nanotube arrays which were synthesized by anodization of Ti foil and annealed at 450 °C. The most used methods for deposition of perovskite materials on mesoporous and planar TiO2 are: one-step deposition, two-step sequential deposition, and vapor-assisted solution processing. Disadvantage of these methods is a small contact area between TiO2 and perovskite. The aim of this research was to increase the contact surface of the perovskite and TiO2 nanotubes by filling the nanotubes with the perovskite material in order to improve electron transport.",
publisher = "Belgrade : Serbian Academy of Sciences and Arts",
journal = "Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022",
title = "Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells",
pages = "188-189",
url = "https://hdl.handle.net/21.15107/rcub_dais_13636"
}

Stefanović, M., Lukić, I., Vujančević, J., Petrović, R.,& Janaćković, Đ.. (2022). Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells. in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022
Belgrade : Serbian Academy of Sciences and Arts., 188-189.
https://hdl.handle.net/21.15107/rcub_dais_13636

Stefanović M, Lukić I, Vujančević J, Petrović R, Janaćković Đ. Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells. in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022. 2022;:188-189.
https://hdl.handle.net/21.15107/rcub_dais_13636 .

Stefanović, Milica, Lukić, Ivana, Vujančević, Jelena, Petrović, Rada, Janaćković, Đorđe, "Improving the contact surface between TiO2 nanotubes and MAPbBr3 to make perovskite solar cells" in Program & Book of Abstracts / Second International Conference ELMINA 2022, Belgrade, Serbia, August 22nd-26th, 2022 (2022):188-189,
https://hdl.handle.net/21.15107/rcub_dais_13636 .

TY  - CONF
AU  - Stefanović, Milica
AU  - Lukić, Ivana
AU  - Vujančević, Jelena
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2022
UR  - https://dais.sanu.ac.rs/123456789/13591
AB  - Supercritical carbon dioxide (sCO2) is an ideal low-temperature cosolvent for perovskite deposition due to its relatively low critical point (31.2 °C, 73.8 bar), no surface tension, liquid-like density, gas-like viscosity, and diffusivity. It enables faster mass transfer which allows penetration of crystals in nanoporous structure. The study investigates the influence of time of deposition of perovskite assisted with supercritical carbon dioxide on the filling of nanotubes. Perovskite solar cell technology has been developed so fast due to several factors including a tunable band gap, high absorption coefficient, and low-cost fabrication. The quality of the perovskite film is important for the high efficiency of perovskite solar cells. Perovskite precursors are usually deposited from the solution onto a substrate using spin-coating followed by post-deposition treatments, but often it results in low-quality films that cannot provide good photovoltaic performances. Deposition of perovskite in the presence of sCO2 is a promising method for the formation of high-quality perovskite layers. In this work, methylammonium lead bromide perovskite (MAPbBr3) was deposited on TiO2 nanotubes from the solution in dimethylformamide (DMF) by application of sCO2 at 35 °C and 200 bar for 1 h, and 3 h. FESEM results show that TiO2 nanotubes were filled with perovskite material in both cases. The diffuse reflectance spectroscopy measurement of samples proved that the absorption edge of prepared TiO2 nanotubes/MAPbBr3 was extended to the visible range. Measurement of I-V characteristics showed that the sample made for 3 h had a higher value of current than the sample prepared for 1 h. The application of sCO2 during the deposition of perovskite has enabled the preparation of a photodiode with a better contact between TiO2 nanotubes and perovskite which is important for the future development of solar cells.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
T1  - Supercritical CO2 assisted deposition of MAPbBr3 perovskite onto TiO2 nanotubes
SP  - 73
EP  - 73
UR  - https://hdl.handle.net/21.15107/rcub_dais_13591
ER  - 

@conference{
author = "Stefanović, Milica and Lukić, Ivana and Vujančević, Jelena and Petrović, Rada and Janaćković, Đorđe",
year = "2022",
abstract = "Supercritical carbon dioxide (sCO2) is an ideal low-temperature cosolvent for perovskite deposition due to its relatively low critical point (31.2 °C, 73.8 bar), no surface tension, liquid-like density, gas-like viscosity, and diffusivity. It enables faster mass transfer which allows penetration of crystals in nanoporous structure. The study investigates the influence of time of deposition of perovskite assisted with supercritical carbon dioxide on the filling of nanotubes. Perovskite solar cell technology has been developed so fast due to several factors including a tunable band gap, high absorption coefficient, and low-cost fabrication. The quality of the perovskite film is important for the high efficiency of perovskite solar cells. Perovskite precursors are usually deposited from the solution onto a substrate using spin-coating followed by post-deposition treatments, but often it results in low-quality films that cannot provide good photovoltaic performances. Deposition of perovskite in the presence of sCO2 is a promising method for the formation of high-quality perovskite layers. In this work, methylammonium lead bromide perovskite (MAPbBr3) was deposited on TiO2 nanotubes from the solution in dimethylformamide (DMF) by application of sCO2 at 35 °C and 200 bar for 1 h, and 3 h. FESEM results show that TiO2 nanotubes were filled with perovskite material in both cases. The diffuse reflectance spectroscopy measurement of samples proved that the absorption edge of prepared TiO2 nanotubes/MAPbBr3 was extended to the visible range. Measurement of I-V characteristics showed that the sample made for 3 h had a higher value of current than the sample prepared for 1 h. The application of sCO2 during the deposition of perovskite has enabled the preparation of a photodiode with a better contact between TiO2 nanotubes and perovskite which is important for the future development of solar cells.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022",
title = "Supercritical CO2 assisted deposition of MAPbBr3 perovskite onto TiO2 nanotubes",
pages = "73-73",
url = "https://hdl.handle.net/21.15107/rcub_dais_13591"
}

Stefanović, M., Lukić, I., Vujančević, J., Petrović, R.,& Janaćković, Đ.. (2022). Supercritical CO2 assisted deposition of MAPbBr3 perovskite onto TiO2 nanotubes. in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022
Belgrade : Materials Research Society of Serbia., 73-73.
https://hdl.handle.net/21.15107/rcub_dais_13591

Stefanović M, Lukić I, Vujančević J, Petrović R, Janaćković Đ. Supercritical CO2 assisted deposition of MAPbBr3 perovskite onto TiO2 nanotubes. in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022. 2022;:73-73.
https://hdl.handle.net/21.15107/rcub_dais_13591 .

Stefanović, Milica, Lukić, Ivana, Vujančević, Jelena, Petrović, Rada, Janaćković, Đorđe, "Supercritical CO2 assisted deposition of MAPbBr3 perovskite onto TiO2 nanotubes" in Program and The Book of abstracts / Twenty-third Annual Conference YUCOMAT 2022 & Twelfth World Round Table Conference on Sintering XII WRTCS 2022, Herceg Novi, Montenegro, August 29 - September 2, 2022 (2022):73-73,
https://hdl.handle.net/21.15107/rcub_dais_13591 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Ćirković, Jovana
AU  - Horváth, Endre
AU  - Forró, László
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12347
AB  - TiO2 under UV light generates charge carriers (electrons and holes) that take part in the process of decomposition of pollutants, which is a well-known fact for the past few decades. For this reason, TiO2 is used for photocatalytic purification water and air. Photoactivity of TiO2 depends on the amount of generated charge carriers, and one part of those carriers are lost through the process of recombination. In order to improve photoactivity, it is necessary to speed up transport of electrons and holes. For better and faster charge carrier transport a unidirectional path is desired, which can be obtained by synthesizing 1D morphology. Anodization of titanium foil is a good way to obtain perpendicular nanotubular morphology onto a substrate. Nanotubular morphology can be optimized via operative conditions of anodization: applied voltage, anodization time and type of electrolyte. In this work, TiO2 nanotube arrays were synthesized by anodization of titanium foil at different voltages: 10 V, 15 V, 20 V and 25 V. Based on FESEM (Field Emission Scanning Electron Microscopy) micrographs, the microstructure of nanotubes was analysed and data concerning wall thickness, outer diameter of nanotubes and active surface were considered. Also, the influence of nanotube morphology on optical properties was determined. Results of our research show that the increasement in anodization voltage influenced on the appearance of redshift in the absorption spectrum. The sample synthesized at 20 V showed the highest photocatalytic activity due to the optimal nanotube length and nanotube diameter.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
T1  - Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes
SP  - 23
EP  - 23
UR  - https://hdl.handle.net/21.15107/rcub_dais_12347
ER  - 

@conference{
author = "Vujančević, Jelena and Ćirković, Jovana and Horváth, Endre and Forró, László and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2021",
abstract = "TiO2 under UV light generates charge carriers (electrons and holes) that take part in the process of decomposition of pollutants, which is a well-known fact for the past few decades. For this reason, TiO2 is used for photocatalytic purification water and air. Photoactivity of TiO2 depends on the amount of generated charge carriers, and one part of those carriers are lost through the process of recombination. In order to improve photoactivity, it is necessary to speed up transport of electrons and holes. For better and faster charge carrier transport a unidirectional path is desired, which can be obtained by synthesizing 1D morphology. Anodization of titanium foil is a good way to obtain perpendicular nanotubular morphology onto a substrate. Nanotubular morphology can be optimized via operative conditions of anodization: applied voltage, anodization time and type of electrolyte. In this work, TiO2 nanotube arrays were synthesized by anodization of titanium foil at different voltages: 10 V, 15 V, 20 V and 25 V. Based on FESEM (Field Emission Scanning Electron Microscopy) micrographs, the microstructure of nanotubes was analysed and data concerning wall thickness, outer diameter of nanotubes and active surface were considered. Also, the influence of nanotube morphology on optical properties was determined. Results of our research show that the increasement in anodization voltage influenced on the appearance of redshift in the absorption spectrum. The sample synthesized at 20 V showed the highest photocatalytic activity due to the optimal nanotube length and nanotube diameter.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia",
title = "Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes",
pages = "23-23",
url = "https://hdl.handle.net/21.15107/rcub_dais_12347"
}

Vujančević, J., Ćirković, J., Horváth, E., Forró, L., Pavlović, V. B.,& Janaćković, Đ.. (2021). Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 23-23.
https://hdl.handle.net/21.15107/rcub_dais_12347

Vujančević J, Ćirković J, Horváth E, Forró L, Pavlović VB, Janaćković Đ. Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes. in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia. 2021;:23-23.
https://hdl.handle.net/21.15107/rcub_dais_12347 .

Vujančević, Jelena, Ćirković, Jovana, Horváth, Endre, Forró, László, Pavlović, Vladimir B., Janaćković, Đorđe, "Influence of anodization voltage on photocatalztic activity of TiO2 nanotubes" in Programme and The Book of Abstracts / International Conference of Experimental and Numerical Investigations and New Technologies - CNN TECH 2021,29 June - 02 July 2021, Zlatibor, Serbia (2021):23-23,
https://hdl.handle.net/21.15107/rcub_dais_12347 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Blagojević, Vladimir
AU  - Andričević, Pavao
AU  - Pavlović, Vera P.
AU  - Horváth, Endre
AU  - Forró, László
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12398
AB  - The aim of this study was to investigate the influence of vanadium oxide photosensitive surface layer on the photoactivity of TiO2 nanotubes. Nanotube arrays were synthesized by anodization of titanium foil at different voltages, and vanadium-oxide was deposited by wet chemical deposition. Deposition of the vanadium-oxide layer was confirmed by XPS analysis, which provided the chemical composition of the sample surface. Photovoltaic characteristics and photocatalytic performance for photodegradation of methyl orange dye of modified TiO2 nanotubes were correlated with the nanotube morphology (and anodization voltage). Optimal anodization voltage was determined, in conjunction with the deposition of the surface vanadium oxide layer, in order to achieve maximum performance of the modified TiO2 electrodes. This has been correlated with changes in the optical properties of the TiO2 electrodes, the nanotube length and diameter, as they occur with the change in the anodization voltage, as well as the changes in the vanadium-oxide content in the samples, where the vanadium-oxide content was found to be determined by the nanotube morphology. The photovoltaic performance of the optimized modified TiO2 electrode with the surface vanadium-oxide layer was found to be significantly better than both the performance of the corresponding TiO2 electrode, and the performance of all the other TiO2 electrodes included in the study.
PB  - Novi Sad : Faculty of Technology
C3  - Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad
T1  - Photoactivity of vanadium oxide TiO2 nanotubes
SP  - 92
EP  - 92
UR  - https://hdl.handle.net/21.15107/rcub_dais_12398
ER  - 

@conference{
author = "Vujančević, Jelena and Blagojević, Vladimir and Andričević, Pavao and Pavlović, Vera P. and Horváth, Endre and Forró, László and Vlahović, Branislav and Pavlović, Vladimir B. and Janaćković, Đorđe",
year = "2021",
abstract = "The aim of this study was to investigate the influence of vanadium oxide photosensitive surface layer on the photoactivity of TiO2 nanotubes. Nanotube arrays were synthesized by anodization of titanium foil at different voltages, and vanadium-oxide was deposited by wet chemical deposition. Deposition of the vanadium-oxide layer was confirmed by XPS analysis, which provided the chemical composition of the sample surface. Photovoltaic characteristics and photocatalytic performance for photodegradation of methyl orange dye of modified TiO2 nanotubes were correlated with the nanotube morphology (and anodization voltage). Optimal anodization voltage was determined, in conjunction with the deposition of the surface vanadium oxide layer, in order to achieve maximum performance of the modified TiO2 electrodes. This has been correlated with changes in the optical properties of the TiO2 electrodes, the nanotube length and diameter, as they occur with the change in the anodization voltage, as well as the changes in the vanadium-oxide content in the samples, where the vanadium-oxide content was found to be determined by the nanotube morphology. The photovoltaic performance of the optimized modified TiO2 electrode with the surface vanadium-oxide layer was found to be significantly better than both the performance of the corresponding TiO2 electrode, and the performance of all the other TiO2 electrodes included in the study.",
publisher = "Novi Sad : Faculty of Technology",
journal = "Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad",
title = "Photoactivity of vanadium oxide TiO2 nanotubes",
pages = "92-92",
url = "https://hdl.handle.net/21.15107/rcub_dais_12398"
}

Vujančević, J., Blagojević, V., Andričević, P., Pavlović, V. P., Horváth, E., Forró, L., Vlahović, B., Pavlović, V. B.,& Janaćković, Đ.. (2021). Photoactivity of vanadium oxide TiO2 nanotubes. in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad
Novi Sad : Faculty of Technology., 92-92.
https://hdl.handle.net/21.15107/rcub_dais_12398

Vujančević J, Blagojević V, Andričević P, Pavlović VP, Horváth E, Forró L, Vlahović B, Pavlović VB, Janaćković Đ. Photoactivity of vanadium oxide TiO2 nanotubes. in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad. 2021;:92-92.
https://hdl.handle.net/21.15107/rcub_dais_12398 .

Vujančević, Jelena, Blagojević, Vladimir, Andričević, Pavao, Pavlović, Vera P., Horváth, Endre, Forró, László, Vlahović, Branislav, Pavlović, Vladimir B., Janaćković, Đorđe, "Photoactivity of vanadium oxide TiO2 nanotubes" in Programme and book of abstracts / 14th ECerS Conference for Young Scientists in Ceramics (CYSC-2021), October 20-23, 2021, Novi Sad (2021):92-92,
https://hdl.handle.net/21.15107/rcub_dais_12398 .

TY  - CONF
AU  - Stefanović, Milica
AU  - Vujančević, Jelena
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12075
AB  - The organo-inorganic perovskites are materials that have recently revolutionized the field of
photovoltaics due to their low-cost fabrication and high optical absorption. The hybrid organoinorganic perovskite absorbs the visible part of the spectrum resulting in the creation of electron-hole pair. To decrease the recombination of charge carriers, the construction of solar cells requires the existence of separate layers for holes and for electrons. TiO2 is usually used as an electron transport layer because its conduction band (CB) lies under the CB of perovskite. In that way, electrons diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure was used as an electron transport layer due to its advantages compared to nanoparticular TiO2. TiO2 nanotubes can provide a one-dimensional transmission channel for the charge carriers, so it will reduce the recombination rate of the carriers and provide a channel for fast carrier transport. However, there is a problem with the contact surface between perovskite and TiO2 nanotubes. The aim of this study is to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material in order to improve electron transport. Methylammonium lead bromide perovskite (MAPbBr3) was deposited on anodically synthesized TiO2 nanotubes which were annealed at 450 °C for 1 h. After degassation of the sample under high vacuum for 3 h at 200 °C, the cooled sample was put in a solution of MAPbBr3 in dimethylformamide (DMF) and it was treated with inert gas (N2), which enabled the filling of the nanotubes with perovskite material to some extent. FESEM and XRD analyses were used for morphological and chemical characterization of the sample. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of MAPbBr3 improves the absorption properties of TiO2 nanotubes. By measuring the I-V characteristics of the sample in the dark and under visible light, a hysteresis curve was obtained.
PB  - Belgrade : Materials Research Society of Serbia
C3  - Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021
T1  - Synthesis and deposition of MAPbBr3 perovskite on titania nanotube arrays
SP  - 111
EP  - 111
UR  - https://hdl.handle.net/21.15107/rcub_dais_12075
ER  - 

@conference{
author = "Stefanović, Milica and Vujančević, Jelena and Petrović, Rada and Janaćković, Đorđe",
year = "2021",
abstract = "The organo-inorganic perovskites are materials that have recently revolutionized the field of
photovoltaics due to their low-cost fabrication and high optical absorption. The hybrid organoinorganic perovskite absorbs the visible part of the spectrum resulting in the creation of electron-hole pair. To decrease the recombination of charge carriers, the construction of solar cells requires the existence of separate layers for holes and for electrons. TiO2 is usually used as an electron transport layer because its conduction band (CB) lies under the CB of perovskite. In that way, electrons diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure was used as an electron transport layer due to its advantages compared to nanoparticular TiO2. TiO2 nanotubes can provide a one-dimensional transmission channel for the charge carriers, so it will reduce the recombination rate of the carriers and provide a channel for fast carrier transport. However, there is a problem with the contact surface between perovskite and TiO2 nanotubes. The aim of this study is to increase the contact surface of perovskite and TiO2 nanotubes by filling the nanotubes with perovskite material in order to improve electron transport. Methylammonium lead bromide perovskite (MAPbBr3) was deposited on anodically synthesized TiO2 nanotubes which were annealed at 450 °C for 1 h. After degassation of the sample under high vacuum for 3 h at 200 °C, the cooled sample was put in a solution of MAPbBr3 in dimethylformamide (DMF) and it was treated with inert gas (N2), which enabled the filling of the nanotubes with perovskite material to some extent. FESEM and XRD analyses were used for morphological and chemical characterization of the sample. The diffuse reflectance spectroscopy measurement of the sample proved that deposition of MAPbBr3 improves the absorption properties of TiO2 nanotubes. By measuring the I-V characteristics of the sample in the dark and under visible light, a hysteresis curve was obtained.",
publisher = "Belgrade : Materials Research Society of Serbia",
journal = "Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021",
title = "Synthesis and deposition of MAPbBr3 perovskite on titania nanotube arrays",
pages = "111-111",
url = "https://hdl.handle.net/21.15107/rcub_dais_12075"
}

Stefanović, M., Vujančević, J., Petrović, R.,& Janaćković, Đ.. (2021). Synthesis and deposition of MAPbBr3 perovskite on titania nanotube arrays. in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021
Belgrade : Materials Research Society of Serbia., 111-111.
https://hdl.handle.net/21.15107/rcub_dais_12075

Stefanović M, Vujančević J, Petrović R, Janaćković Đ. Synthesis and deposition of MAPbBr3 perovskite on titania nanotube arrays. in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021. 2021;:111-111.
https://hdl.handle.net/21.15107/rcub_dais_12075 .

Stefanović, Milica, Vujančević, Jelena, Petrović, Rada, Janaćković, Đorđe, "Synthesis and deposition of MAPbBr3 perovskite on titania nanotube arrays" in Programme and the Book of abstracts / Twenty-second Annual Conference YUCOMAT 2021 Herceg Novi, Montenegro, August 30 - September 3, 2021 (2021):111-111,
https://hdl.handle.net/21.15107/rcub_dais_12075 .

TY  - CONF
AU  - Stefanović, Milica
AU  - Petrović, Rada
AU  - Lukić, Ivana
AU  - Vujančević, Jelena
AU  - Janaćković, Đorđe
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12273
AB  - Perovskite solar cells reached high efficiency in a short period. When perovskite was applied for the first time as photovoltaics, power conversion efficiency (PCE) was less than 3 %. Up to now, PCE is over 29 %. In perovskite solar cells, the perovskite layer is an active layer that absorbs the visible part of the spectrum. To reduce the recombination of charge carriers, the construction of solar cells requires the existence of layers for holes and electrons. TiO2 is usually used as an inorganic electron transport layer because its conduction band (CB) lies under the CB of perovskite, so electrons could diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure was used due to its advantages compared to nanoparticular TiO2. TiO2 nanotubes provide a one-dimensional transmission channel for the charge carriers which will reduce the recombination of the carriers and provide a fast carrier transport. The TiO2 nanotubes were synthesized by anodization of Ti foil after which they were annealed at 450 °C for 1 h. Their inner diameter was ~ 103 ± 17 nm while the length was ~ 350 nm. Methylammonium lead bromide perovskite (MAPbBr3) was deposited on TiO2 nanotubes from the solution in dimethylformamide (DMF) by application of supercritical carbon dioxide at 35 °C and different pressures (100, 200, and 300 bar). It has been observed that supercritical CO2 improves the filling of nanotubes by the perovskite due to its stronger solubilizing power at higher pressures. A perovskite photodiode with an improved contact surface between TiO2 and perovskite was made, which is the basis for future solar cell construction. I-V characteristics show that the highest value of photocurrent under visible light reached 400 μA for the sample which was obtained at 35 ° C and 300 bar for 1 h. The absorption edge of prepared TiO2 nanotubes/MAPbBr3, determined by diffuse reflectance spectroscopy, was extended to the visible range. FESEM and XRD analyses also were done.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of abstracts / Nineteenth Young Researchers' Conference Materials Science and Engineering, December 1-3, 2021, Belgrade, Serbia
T1  - Application of supercritical carbon dioxide for making perovskite photodiode
SP  - 70
EP  - 70
UR  - https://hdl.handle.net/21.15107/rcub_dais_12273
ER  - 

@conference{
author = "Stefanović, Milica and Petrović, Rada and Lukić, Ivana and Vujančević, Jelena and Janaćković, Đorđe",
year = "2021",
abstract = "Perovskite solar cells reached high efficiency in a short period. When perovskite was applied for the first time as photovoltaics, power conversion efficiency (PCE) was less than 3 %. Up to now, PCE is over 29 %. In perovskite solar cells, the perovskite layer is an active layer that absorbs the visible part of the spectrum. To reduce the recombination of charge carriers, the construction of solar cells requires the existence of layers for holes and electrons. TiO2 is usually used as an inorganic electron transport layer because its conduction band (CB) lies under the CB of perovskite, so electrons could diffuse from CB of perovskite to CB of TiO2. For these experiments, TiO2 nanotubular structure was used due to its advantages compared to nanoparticular TiO2. TiO2 nanotubes provide a one-dimensional transmission channel for the charge carriers which will reduce the recombination of the carriers and provide a fast carrier transport. The TiO2 nanotubes were synthesized by anodization of Ti foil after which they were annealed at 450 °C for 1 h. Their inner diameter was ~ 103 ± 17 nm while the length was ~ 350 nm. Methylammonium lead bromide perovskite (MAPbBr3) was deposited on TiO2 nanotubes from the solution in dimethylformamide (DMF) by application of supercritical carbon dioxide at 35 °C and different pressures (100, 200, and 300 bar). It has been observed that supercritical CO2 improves the filling of nanotubes by the perovskite due to its stronger solubilizing power at higher pressures. A perovskite photodiode with an improved contact surface between TiO2 and perovskite was made, which is the basis for future solar cell construction. I-V characteristics show that the highest value of photocurrent under visible light reached 400 μA for the sample which was obtained at 35 ° C and 300 bar for 1 h. The absorption edge of prepared TiO2 nanotubes/MAPbBr3, determined by diffuse reflectance spectroscopy, was extended to the visible range. FESEM and XRD analyses also were done.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of abstracts / Nineteenth Young Researchers' Conference Materials Science and Engineering, December 1-3, 2021, Belgrade, Serbia",
title = "Application of supercritical carbon dioxide for making perovskite photodiode",
pages = "70-70",
url = "https://hdl.handle.net/21.15107/rcub_dais_12273"
}

Stefanović, M., Petrović, R., Lukić, I., Vujančević, J.,& Janaćković, Đ.. (2021). Application of supercritical carbon dioxide for making perovskite photodiode. in Program and the Book of abstracts / Nineteenth Young Researchers' Conference Materials Science and Engineering, December 1-3, 2021, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 70-70.
https://hdl.handle.net/21.15107/rcub_dais_12273

Stefanović M, Petrović R, Lukić I, Vujančević J, Janaćković Đ. Application of supercritical carbon dioxide for making perovskite photodiode. in Program and the Book of abstracts / Nineteenth Young Researchers' Conference Materials Science and Engineering, December 1-3, 2021, Belgrade, Serbia. 2021;:70-70.
https://hdl.handle.net/21.15107/rcub_dais_12273 .

Stefanović, Milica, Petrović, Rada, Lukić, Ivana, Vujančević, Jelena, Janaćković, Đorđe, "Application of supercritical carbon dioxide for making perovskite photodiode" in Program and the Book of abstracts / Nineteenth Young Researchers' Conference Materials Science and Engineering, December 1-3, 2021, Belgrade, Serbia (2021):70-70,
https://hdl.handle.net/21.15107/rcub_dais_12273 .

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://www.sciencedirect.com/science/article/pii/S0022369719328525
UR  - https://dais.sanu.ac.rs/123456789/9541
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 °C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO2 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  - Elsevier
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
UR  - https://hdl.handle.net/21.15107/rcub_dais_9541
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 °C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO2 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 = "Elsevier",
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",
url = "https://hdl.handle.net/21.15107/rcub_dais_9541"
}

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
Elsevier., 147, 109609.
https://doi.org/10.1016/j.jpcs.2020.109609
https://hdl.handle.net/21.15107/rcub_dais_9541

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
https://hdl.handle.net/21.15107/rcub_dais_9541 .

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 .,
https://hdl.handle.net/21.15107/rcub_dais_9541 .

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://www.sciencedirect.com/science/article/pii/S0022369719328525
UR  - https://dais.sanu.ac.rs/123456789/9540
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 °C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO2 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  - Elsevier
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
UR  - https://hdl.handle.net/21.15107/rcub_dais_9540
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 °C in ambient air. Anatase crystal structure was achieved with no change in nanotubular morphology in respect to as-anodized amorphous TiO2 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 = "Elsevier",
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",
url = "https://hdl.handle.net/21.15107/rcub_dais_9540"
}

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
Elsevier., 147, 109609.
https://doi.org/10.1016/j.jpcs.2020.109609
https://hdl.handle.net/21.15107/rcub_dais_9540

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
https://hdl.handle.net/21.15107/rcub_dais_9540 .

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 .,
https://hdl.handle.net/21.15107/rcub_dais_9540 .

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  - https://dais.sanu.ac.rs/123456789/6985
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), October 16-19, 2019, Novi Sad
T1  - ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass
SP  - 132
EP  - 132
UR  - https://hdl.handle.net/21.15107/rcub_dais_6985
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), October 16-19, 2019, Novi Sad",
title = "ToF-ERDA/RBS analysis of annealed TiO2 nanotubes grown onto FTO glass",
pages = "132-132",
url = "https://hdl.handle.net/21.15107/rcub_dais_6985"
}

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), October 16-19, 2019, Novi Sad
Novi Sad : Faculty of Technology., 132-132.
https://hdl.handle.net/21.15107/rcub_dais_6985

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), October 16-19, 2019, Novi Sad. 2019;:132-132.
https://hdl.handle.net/21.15107/rcub_dais_6985 .

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), October 16-19, 2019, Novi Sad (2019):132-132,
https://hdl.handle.net/21.15107/rcub_dais_6985 .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horváth, Endre
AU  - Kollár, Márton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5084
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤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 TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /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. © 2019
PB  - Elsevier
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
SP  - 10013
EP  - 10020
VL  - 45
IS  - 8
DO  - 10.1016/j.ceramint.2019.02.045
UR  - https://hdl.handle.net/21.15107/rcub_dais_5084
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko and Horváth, Endre and Kollár, Márton and Náfrádi, Bálint and Schiller, Andreas and Domanski, Konrad and Forró, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤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 TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /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. © 2019",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10013-10020",
volume = "45",
number = "8",
doi = "10.1016/j.ceramint.2019.02.045",
url = "https://hdl.handle.net/21.15107/rcub_dais_5084"
}

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. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
https://hdl.handle.net/21.15107/rcub_dais_5084

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 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
https://hdl.handle.net/21.15107/rcub_dais_5084 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko, Horváth, Endre, Kollár, Márton, Náfrádi, Bálint, Schiller, Andreas, Domanski, Konrad, Forró, 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 .,
https://hdl.handle.net/21.15107/rcub_dais_5084 .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horváth, Endre
AU  - Kollár, Márton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5765
AB  - Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤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 TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /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. © 2019
PB  - Elsevier
T2  - Ceramics International
T1  - Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping
SP  - 10013
EP  - 10020
VL  - 45
IS  - 8
DO  - 10.1016/j.ceramint.2019.02.045
UR  - https://hdl.handle.net/21.15107/rcub_dais_5765
ER  - 

@article{
author = "Vujančević, Jelena and Andričević, Pavao and Bjelajac, Anđelika and Đokić, Veljko and Popović, Maja and Rakočević, Zlatko and Horváth, Endre and Kollár, Márton and Náfrádi, Bálint and Schiller, Andreas and Domanski, Konrad and Forró, Laszlo and Pavlović, Vera P. and Janaćković, Đorđe",
year = "2019",
abstract = "Highly ordered, anodically grown TiO 2 nanotubes on titanium supports were annealed in ammonia atmosphere in order to incorporate nitrogen doping (≤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 TiO 2 /CH 3 NH 3 PbI 3 single crystals. The N-TiO 2 /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. © 2019",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping",
pages = "10013-10020",
volume = "45",
number = "8",
doi = "10.1016/j.ceramint.2019.02.045",
url = "https://hdl.handle.net/21.15107/rcub_dais_5765"
}

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. P.,& Janaćković, Đ.. (2019). Dry-pressed anodized titania nanotube/CH3NH3PbI3 single crystal heterojunctions: The beneficial role of N doping. in Ceramics International
Elsevier., 45(8), 10013-10020.
https://doi.org/10.1016/j.ceramint.2019.02.045
https://hdl.handle.net/21.15107/rcub_dais_5765

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 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
https://hdl.handle.net/21.15107/rcub_dais_5765 .

Vujančević, Jelena, Andričević, Pavao, Bjelajac, Anđelika, Đokić, Veljko, Popović, Maja, Rakočević, Zlatko, Horváth, Endre, Kollár, Márton, Náfrádi, Bálint, Schiller, Andreas, Domanski, Konrad, Forró, 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 .,
https://hdl.handle.net/21.15107/rcub_dais_5765 .

TY  - DATA
AU  - Vujančević, Jelena
AU  - Andričević, Pavao
AU  - Bjelajac, Anđelika
AU  - Đokić, Veljko
AU  - Popović, Maja
AU  - Rakočević, Zlatko
AU  - Horváth, Endre
AU  - Kollár, Márton
AU  - Náfrádi, Bálint
AU  - Schiller, Andreas
AU  - Domanski, Konrad
AU  - Forró, Laszlo
AU  - Pavlović, Vera P.
AU  - Janaćković, Đorđe
PY  - 2019
UR  - https://dais.sanu.ac.rs/123456789/5969
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 and Horváth, Endre and Kollár, Márton 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., Horváth, E., Kollár, 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 Z, Horváth E, Kollár 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, Horváth, Endre, Kollár, Márton, 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  - JOUR
AU  - Veljović, Đorđe
AU  - Matić, Tamara
AU  - Stamenić, Tanja
AU  - Kojić, Vesna
AU  - Dimitrijević Branković, Suzana
AU  - Lukić, Miodrag J.
AU  - Jevtić, Sanja
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0272884219320413
UR  - https://dais.sanu.ac.rs/123456789/6948
AB  - The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.
PB  - Elsevier
T2  - Ceramics International
T1  - Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity
SP  - 22029
SP  - 22039
VL  - 45
IS  - 17, Part A
DO  - 10.1016/j.ceramint.2019.07.219
UR  - https://hdl.handle.net/21.15107/rcub_dais_6948
ER  - 

@article{
author = "Veljović, Đorđe and Matić, Tamara and Stamenić, Tanja and Kojić, Vesna and Dimitrijević Branković, Suzana and Lukić, Miodrag J. and Jevtić, Sanja and Radovanović, Željko and Petrović, Rada and Janaćković, Đorđe",
year = "2019",
abstract = "The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity",
pages = "22029-22039",
volume = "45",
number = "17, Part A",
doi = "10.1016/j.ceramint.2019.07.219",
url = "https://hdl.handle.net/21.15107/rcub_dais_6948"
}

Veljović, Đ., Matić, T., Stamenić, T., Kojić, V., Dimitrijević Branković, S., Lukić, M. J., Jevtić, S., Radovanović, Ž., Petrović, R.,& Janaćković, Đ.. (2019). Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International
Elsevier., 45(17, Part A), 22029.
https://doi.org/10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6948

Veljović Đ, Matić T, Stamenić T, Kojić V, Dimitrijević Branković S, Lukić MJ, Jevtić S, Radovanović Ž, Petrović R, Janaćković Đ. Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International. 2019;45(17, Part A):22029.
doi:10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6948 .

Veljović, Đorđe, Matić, Tamara, Stamenić, Tanja, Kojić, Vesna, Dimitrijević Branković, Suzana, Lukić, Miodrag J., Jevtić, Sanja, Radovanović, Željko, Petrović, Rada, Janaćković, Đorđe, "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity" in Ceramics International, 45, no. 17, Part A (2019):22029,
https://doi.org/10.1016/j.ceramint.2019.07.219 .,
https://hdl.handle.net/21.15107/rcub_dais_6948 .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Matić, Tamara
AU  - Stamenić, Tanja
AU  - Kojić, Vesna
AU  - Dimitrijević Branković, Suzana
AU  - Lukić, Miodrag J.
AU  - Jevtić, Sanja
AU  - Radovanović, Željko
AU  - Petrović, Rada
AU  - Janaćković, Đorđe
PY  - 2019
UR  - http://www.sciencedirect.com/science/article/pii/S0272884219320413
UR  - https://dais.sanu.ac.rs/123456789/6504
AB  - The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.
PB  - Elsevier
T2  - Ceramics International
T1  - Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity
SP  - 22029
SP  - 22039
VL  - 45
IS  - 17, Part A
DO  - 10.1016/j.ceramint.2019.07.219
UR  - https://hdl.handle.net/21.15107/rcub_dais_6504
ER  - 

@article{
author = "Veljović, Đorđe and Matić, Tamara and Stamenić, Tanja and Kojić, Vesna and Dimitrijević Branković, Suzana and Lukić, Miodrag J. and Jevtić, Sanja and Radovanović, Željko and Petrović, Rada and Janaćković, Đorđe",
year = "2019",
abstract = "The aim of this study was to improve the mechanical properties and to optimize antimicrobial activity of hydroxyapatite (HAP) by simultaneous doping with Mg and Cu ions in order to obtain material that would be able to assist in the bone/tooth healing process, prevent post-implementation infections and provide satisfying values of hardness and fracture toughness for biomedical application. Ion doping was done during the hydrothermal synthesis of HAP powders, whereby the content of Mg ions in the starting solution was varied between 1-20 mol. % with regard to Ca ions, while the amount of Cu ions was kept constant at 0.4 mol. %. The green compacts were sintered for 2 h at temperatures ranging 750–1200 °C depending on the Mg content, chosen in agreement with dilatometry results. Presence of Mg ions was found to favour transition from HAP to β−tricalcium phosphate phase (β−TCP), which enabled formation of biphasic HAP/β−TCP and pure β−TCP phase at 160 °C during hydrothermal synthesis. In vitro investigation of antimicrobial activity against Escherichia coli, Staphylococcus aureus and Enterococcus faecalis showed satisfactory antimicrobial activity. MTT assay performed on MRC-5 and L929 cell lines showed excellent cytocompatibility and cell proliferation. Maximum hardness by Vickers and fracture toughness values, 4.96 GPa and 1.75 MPa m1/2 respectively, were obtained upon addition of 5 mol. % Mg, as a consequence of the lowest grain size and porosity, as well as the highest densification rate. This is, to the best of our knowledge, the highest fracture toughness for HAP or β-TCP ceramics reported thus far.",
publisher = "Elsevier",
journal = "Ceramics International",
title = "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity",
pages = "22029-22039",
volume = "45",
number = "17, Part A",
doi = "10.1016/j.ceramint.2019.07.219",
url = "https://hdl.handle.net/21.15107/rcub_dais_6504"
}

Veljović, Đ., Matić, T., Stamenić, T., Kojić, V., Dimitrijević Branković, S., Lukić, M. J., Jevtić, S., Radovanović, Ž., Petrović, R.,& Janaćković, Đ.. (2019). Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International
Elsevier., 45(17, Part A), 22029.
https://doi.org/10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6504

Veljović Đ, Matić T, Stamenić T, Kojić V, Dimitrijević Branković S, Lukić MJ, Jevtić S, Radovanović Ž, Petrović R, Janaćković Đ. Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity. in Ceramics International. 2019;45(17, Part A):22029.
doi:10.1016/j.ceramint.2019.07.219
https://hdl.handle.net/21.15107/rcub_dais_6504 .

Veljović, Đorđe, Matić, Tamara, Stamenić, Tanja, Kojić, Vesna, Dimitrijević Branković, Suzana, Lukić, Miodrag J., Jevtić, Sanja, Radovanović, Željko, Petrović, Rada, Janaćković, Đorđe, "Mg/Cu co-substituted hydroxyapatite – Biocompatibility, mechanical properties and antimicrobial activity" in Ceramics International, 45, no. 17, Part A (2019):22029,
https://doi.org/10.1016/j.ceramint.2019.07.219 .,
https://hdl.handle.net/21.15107/rcub_dais_6504 .

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  - https://dais.sanu.ac.rs/123456789/4722
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 Engineering, December 5-7, 2018, Belgrade, Serbia
T1  - Customizing nanotubular titania for photocatalytic activity
SP  - 77
EP  - 77
UR  - https://hdl.handle.net/21.15107/rcub_dais_4722
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 Engineering, December 5-7, 2018, Belgrade, Serbia",
title = "Customizing nanotubular titania for photocatalytic activity",
pages = "77-77",
url = "https://hdl.handle.net/21.15107/rcub_dais_4722"
}

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 Engineering, December 5-7, 2018, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 77-77.
https://hdl.handle.net/21.15107/rcub_dais_4722

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 Engineering, December 5-7, 2018, Belgrade, Serbia. 2018;:77-77.
https://hdl.handle.net/21.15107/rcub_dais_4722 .

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 Engineering, December 5-7, 2018, Belgrade, Serbia (2018):77-77,
https://hdl.handle.net/21.15107/rcub_dais_4722 .

TY  - JOUR
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Ćirković, Jovana
AU  - Pavlović, Vera P.
AU  - Horváth, Endre
AU  - Forró, László
AU  - Vlahović, Branislav
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe
AU  - Pavlović, Vladimir B.
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4528
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 X-ray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by X-ray 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°C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. OI 172057 and Grant no. III 45019]
PB  - Belgrade : ETRAN
T2  - Science of Sintering
T2  - Science of Sintering
T1  - Structure and photocatalytic properties of sintered TiO2 nanotube arrays
SP  - 39
EP  - 50
VL  - 50
IS  - 1
DO  - 10.2298/SOS1801039V
UR  - https://hdl.handle.net/21.15107/rcub_dais_4528
ER  - 

@article{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Ćirković, Jovana and Pavlović, Vera P. and Horváth, Endre and Forró, László 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 X-ray diffraction (XRD) and Raman spectroscopy. The chemical composition was studied by X-ray 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°C for 30 min had the highest degree of crystallinity and exhibited the best photocatalytic activity among the studied TiO2 nanotube films. [Project of the Serbian Ministry of Education, Science and Technological Development, Grant no. OI 172057 and Grant no. III 45019]",
publisher = "Belgrade : ETRAN",
journal = "Science of Sintering, Science of Sintering",
title = "Structure and photocatalytic properties of sintered TiO2 nanotube arrays",
pages = "39-50",
volume = "50",
number = "1",
doi = "10.2298/SOS1801039V",
url = "https://hdl.handle.net/21.15107/rcub_dais_4528"
}

Vujančević, J., Bjelajac, A., Ćirković, J., Pavlović, V. P., Horváth, E., Forró, L., Vlahović, B., Mitrić, M., Janaćković, Đ.,& Pavlović, V. B.. (2018). Structure and photocatalytic properties of sintered TiO2 nanotube arrays. in Science of Sintering
Belgrade : ETRAN., 50(1), 39-50.
https://doi.org/10.2298/SOS1801039V
https://hdl.handle.net/21.15107/rcub_dais_4528

Vujančević J, Bjelajac A, Ćirković J, Pavlović VP, Horváth E, Forró 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
https://hdl.handle.net/21.15107/rcub_dais_4528 .

Vujančević, Jelena, Bjelajac, Anđelika, Ćirković, Jovana, Pavlović, Vera P., Horváth, Endre, Forró, László, 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 .,
https://hdl.handle.net/21.15107/rcub_dais_4528 .

TY  - CONF
AU  - Veljović, Đorđe
AU  - Radovanović, Željko
AU  - Rogan, Jelena
AU  - Dapčević, Aleksandra
AU  - Dimitrijević, Suzana
AU  - Dimitrijević Branković, Suzana
AU  - Kojić, Vesna
AU  - Janaćković, Đorđe
PY  - 2018
UR  - https://dais.sanu.ac.rs/123456789/4718
AB  - Bioactive glasses have been used for over three decades in biomedical applications owing to high bioactivity, biocompatibility, as well as the possibility to stimulate regeneration of the bone. The aim of this work was to synthesized bioactive glasses, which contain lithium and strontium, by commercial method melting-quenching, as well as determining the properties, affected by mentioned ions. Differential thermal/thermogravimetric analysis, particle size distribution, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectrometry, evaluation of the antimicrobial activity, in vitro bioactivity and biocompatibility test and scanning electron microscopy were used for characterization. The results showed that glass transition and crystallization temperatures are decreasing with addition of lithium and strontium ions. Furthermore, the samples showed high inhibition rate of Escherichia coli growth, as well as high bioactivity and biocompatibility. The crystal apatite layer, formed on the surface of synthesized glasses after seven days in simulated body fluid, differs in shape, size and interconnection of the glass particles, which depends on concentration of lithium and strontium ions.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
T1  - Synthesis and characterization of bioactive glass doped with lithium and strontium ions
SP  - 20
EP  - 20
UR  - https://hdl.handle.net/21.15107/rcub_dais_4718
ER  - 

@conference{
author = "Veljović, Đorđe and Radovanović, Željko and Rogan, Jelena and Dapčević, Aleksandra and Dimitrijević, Suzana and Dimitrijević Branković, Suzana and Kojić, Vesna and Janaćković, Đorđe",
year = "2018",
abstract = "Bioactive glasses have been used for over three decades in biomedical applications owing to high bioactivity, biocompatibility, as well as the possibility to stimulate regeneration of the bone. The aim of this work was to synthesized bioactive glasses, which contain lithium and strontium, by commercial method melting-quenching, as well as determining the properties, affected by mentioned ions. Differential thermal/thermogravimetric analysis, particle size distribution, energy-dispersive X-ray spectroscopy, inductively coupled plasma optical emission spectrometry, evaluation of the antimicrobial activity, in vitro bioactivity and biocompatibility test and scanning electron microscopy were used for characterization. The results showed that glass transition and crystallization temperatures are decreasing with addition of lithium and strontium ions. Furthermore, the samples showed high inhibition rate of Escherichia coli growth, as well as high bioactivity and biocompatibility. The crystal apatite layer, formed on the surface of synthesized glasses after seven days in simulated body fluid, differs in shape, size and interconnection of the glass particles, which depends on concentration of lithium and strontium ions.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia",
title = "Synthesis and characterization of bioactive glass doped with lithium and strontium ions",
pages = "20-20",
url = "https://hdl.handle.net/21.15107/rcub_dais_4718"
}

Veljović, Đ., Radovanović, Ž., Rogan, J., Dapčević, A., Dimitrijević, S., Dimitrijević Branković, S., Kojić, V.,& Janaćković, Đ.. (2018). Synthesis and characterization of bioactive glass doped with lithium and strontium ions. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 20-20.
https://hdl.handle.net/21.15107/rcub_dais_4718

Veljović Đ, Radovanović Ž, Rogan J, Dapčević A, Dimitrijević S, Dimitrijević Branković S, Kojić V, Janaćković Đ. Synthesis and characterization of bioactive glass doped with lithium and strontium ions. in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia. 2018;:20-20.
https://hdl.handle.net/21.15107/rcub_dais_4718 .

Veljović, Đorđe, Radovanović, Željko, Rogan, Jelena, Dapčević, Aleksandra, Dimitrijević, Suzana, Dimitrijević Branković, Suzana, Kojić, Vesna, Janaćković, Đorđe, "Synthesis and characterization of bioactive glass doped with lithium and strontium ions" in Program and the Book of Abstracts / Seventeenth Young Researchers' Conference Materials Sciences and Engineering, December 5-7, 2018, Belgrade, Serbia (2018):20-20,
https://hdl.handle.net/21.15107/rcub_dais_4718 .

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  - https://dais.sanu.ac.rs/123456789/5121
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, 20th-21st 2017, Belgrade
T1  - Fabrication and applications of multifunctional nanostructured TiO2
SP  - VII - 10
EP  - VII - 18
UR  - https://hdl.handle.net/21.15107/rcub_dais_5121
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, 20th-21st 2017, Belgrade",
title = "Fabrication and applications of multifunctional nanostructured TiO2",
pages = "VII - 10-VII - 18",
url = "https://hdl.handle.net/21.15107/rcub_dais_5121"
}

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, 20th-21st 2017, Belgrade
Belgrade : Faculty of Agriculture, Department for Agricultural Engineering., VII - 10-VII - 18.
https://hdl.handle.net/21.15107/rcub_dais_5121

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, 20th-21st 2017, Belgrade. 2017;:VII - 10-VII - 18.
https://hdl.handle.net/21.15107/rcub_dais_5121 .

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, 20th-21st 2017, Belgrade (2017):VII - 10-VII - 18,
https://hdl.handle.net/21.15107/rcub_dais_5121 .

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  - https://dais.sanu.ac.rs/123456789/5141
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-21st October 2017, Belgrade - Zemun, Serbia
T1  - Fabrication and applications of multifunctional nanostructured TiO2
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_dais_5141
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-21st October 2017, Belgrade - Zemun, Serbia",
title = "Fabrication and applications of multifunctional nanostructured TiO2",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_dais_5141"
}

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-21st October 2017, Belgrade - Zemun, Serbia
Belgrade : Faculty of Agriculture, Department for Agricultural Engineering., 44-44.
https://hdl.handle.net/21.15107/rcub_dais_5141

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-21st October 2017, Belgrade - Zemun, Serbia. 2017;:44-44.
https://hdl.handle.net/21.15107/rcub_dais_5141 .

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-21st October 2017, Belgrade - Zemun, Serbia (2017):44-44,
https://hdl.handle.net/21.15107/rcub_dais_5141 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Đokić, Veljko
AU  - Bjelajac, Anđelika
AU  - Pavlović, Vera P.
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/841
AB  - Having in mind that anodic oxidation method can be used for tailoring desired structure and morphology of TiO2, herein the synthesis of self-ordered TiO2 nanotubes via electrochemical anodization of high purity Ti foil is reported. The influence of synthesis parameters such as oxidative voltage, different electrolyte, annealing temperature and annealing atmosphere were explored and correlate with obtained TiO2 nanotube arrays. The results show that applied potential is the main factor that controls the diameter of the nanotubes, while annealing temperature influence on crystal type and morphology is related to different contents of electrolyte. Investigated method gives opportunity to enhanced performance of TiO2 nanotubes, providing many applications in different field.
PB  - Belgrade : Institute of Technical Sciences of SASA
C3  - Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
T1  - Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization
SP  - 18
EP  - 18
UR  - https://hdl.handle.net/21.15107/rcub_dais_841
ER  - 

@conference{
author = "Vujančević, Jelena and Đokić, Veljko and Bjelajac, Anđelika and Pavlović, Vera P. and Mitrić, Miodrag and Janaćković, Đorđe and Pavlović, Vladimir B.",
year = "2015",
abstract = "Having in mind that anodic oxidation method can be used for tailoring desired structure and morphology of TiO2, herein the synthesis of self-ordered TiO2 nanotubes via electrochemical anodization of high purity Ti foil is reported. The influence of synthesis parameters such as oxidative voltage, different electrolyte, annealing temperature and annealing atmosphere were explored and correlate with obtained TiO2 nanotube arrays. The results show that applied potential is the main factor that controls the diameter of the nanotubes, while annealing temperature influence on crystal type and morphology is related to different contents of electrolyte. Investigated method gives opportunity to enhanced performance of TiO2 nanotubes, providing many applications in different field.",
publisher = "Belgrade : Institute of Technical Sciences of SASA",
journal = "Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia",
title = "Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization",
pages = "18-18",
url = "https://hdl.handle.net/21.15107/rcub_dais_841"
}

Vujančević, J., Đokić, V., Bjelajac, A., Pavlović, V. P., Mitrić, M., Janaćković, Đ.,& Pavlović, V. B.. (2015). Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization. in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia
Belgrade : Institute of Technical Sciences of SASA., 18-18.
https://hdl.handle.net/21.15107/rcub_dais_841

Vujančević J, Đokić V, Bjelajac A, Pavlović VP, Mitrić M, Janaćković Đ, Pavlović VB. Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization. in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia. 2015;:18-18.
https://hdl.handle.net/21.15107/rcub_dais_841 .

Vujančević, Jelena, Đokić, Veljko, Bjelajac, Anđelika, Pavlović, Vera P., Mitrić, Miodrag, Janaćković, Đorđe, Pavlović, Vladimir B., "Tailoring self-ordering TiO2 nanotube arrays by oxidative anodization" in Program and the Book of Abstracts / Fourteenth Young Researchers' Conference Materials Sciences and Engineering, December 9-11, 2015, Belgrade, Serbia (2015):18-18,
https://hdl.handle.net/21.15107/rcub_dais_841 .

TY  - CONF
AU  - Vujančević, Jelena
AU  - Bjelajac, Anđelika
AU  - Obradović, Nina
AU  - Pavlović, Vera P.
AU  - Mitrić, Miodrag
AU  - Janaćković, Đorđe
AU  - Rašić, Goran
AU  - Vlahović, Branislav
AU  - Pavlović, Vladimir B.
PY  - 2015
UR  - https://dais.sanu.ac.rs/123456789/764
AB  - The influence of electrochemical conditions and the heat treatment on the crystal structure and the microstructure evolution of TiO2 based nanotubes synthesized by the self-ordering anodization process is investigated in this work. The electrochemical anodization was performed at room temperature, for 30 minutes under 15, 20 and 25 V, with stirring. The as-anodized Ti foils were annealed in air at 450, 600, 650 and 700 °C for 30 minutes. The structure and the lattice dynamics of the samples has been studied by using XRD and Raman spectroscopy methods. The microstructure development of the 1-D TiO2 nanostructures has been analyzed by FESEM.
PB  - Belgrade : Serbian Ceramic Society
C3  - Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015
T1  - Influence of Synthesis Parameters on Structure of 1-D TiO2 nanostructures
SP  - 81
EP  - 81
UR  - https://hdl.handle.net/21.15107/rcub_dais_764
ER  - 

@conference{
author = "Vujančević, Jelena and Bjelajac, Anđelika and Obradović, Nina and Pavlović, Vera P. and Mitrić, Miodrag and Janaćković, Đorđe and Rašić, Goran and Vlahović, Branislav and Pavlović, Vladimir B.",
year = "2015",
abstract = "The influence of electrochemical conditions and the heat treatment on the crystal structure and the microstructure evolution of TiO2 based nanotubes synthesized by the self-ordering anodization process is investigated in this work. The electrochemical anodization was performed at room temperature, for 30 minutes under 15, 20 and 25 V, with stirring. The as-anodized Ti foils were annealed in air at 450, 600, 650 and 700 °C for 30 minutes. The structure and the lattice dynamics of the samples has been studied by using XRD and Raman spectroscopy methods. The microstructure development of the 1-D TiO2 nanostructures has been analyzed by FESEM.",
publisher = "Belgrade : Serbian Ceramic Society",
journal = "Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015",
title = "Influence of Synthesis Parameters on Structure of 1-D TiO2 nanostructures",
pages = "81-81",
url = "https://hdl.handle.net/21.15107/rcub_dais_764"
}

Vujančević, J., Bjelajac, A., Obradović, N., Pavlović, V. P., Mitrić, M., Janaćković, Đ., Rašić, G., Vlahović, B.,& Pavlović, V. B.. (2015). Influence of Synthesis Parameters on Structure of 1-D TiO2 nanostructures. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015
Belgrade : Serbian Ceramic Society., 81-81.
https://hdl.handle.net/21.15107/rcub_dais_764

Vujančević J, Bjelajac A, Obradović N, Pavlović VP, Mitrić M, Janaćković Đ, Rašić G, Vlahović B, Pavlović VB. Influence of Synthesis Parameters on Structure of 1-D TiO2 nanostructures. in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015. 2015;:81-81.
https://hdl.handle.net/21.15107/rcub_dais_764 .

Vujančević, Jelena, Bjelajac, Anđelika, Obradović, Nina, Pavlović, Vera P., Mitrić, Miodrag, Janaćković, Đorđe, Rašić, Goran, Vlahović, Branislav, Pavlović, Vladimir B., "Influence of Synthesis Parameters on Structure of 1-D TiO2 nanostructures" in Advanced Ceramics and Application : new frontiers in multifunctional material science and processing : program and the book of abstracts / IV Serbian Ceramic Society Conference, Belgrade, 21-23. September 2015 (2015):81-81,
https://hdl.handle.net/21.15107/rcub_dais_764 .