Dostanić, Jasmina

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orcid::0000-0002-3934-0569
  • Dostanić, Jasmina (7)
  • Dostanic, Jasmina (1)
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Author's Bibliography

Visible light absorption of surface-modified Al2O3 powders: A comparative DFT and experimental study

Đorđević, Vesna R.; Sredojević, Dušan; Dostanić, Jasmina; Lončarević, Davor; Ahrenkiel, Scott Phillip; Švrakić, Nenad M.; Brothers, Edward N.; Belić, Milivoj R.; Nedeljković, Jovan

(2019)

TY  - JOUR
AU  - Đorđević, Vesna R.
AU  - Sredojević, Dušan
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Švrakić, Nenad M.
AU  - Brothers, Edward N.
AU  - Belić, Milivoj R.
AU  - Nedeljković, Jovan
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S1387181118303639
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/7763
AB  - Surface modification of Al2O3 powders, prepared using reproducible sol-gel synthetic route with small colorless organic molecules, induces charge transfer complex formation and the appearance of absorption in the visible spectral region. Comprehensive microstructural characterization involving transmission electron microscopy, X-ray diffraction analysis, and nitrogen adsorption–desorption isotherms, revealed that γ-crystalline alumina powders consist of mesoporous particles in the size range from 0.1 to 0.3 μm, with specific surface area of 54.8 m2/g, and pore radius between 3 and 4 nm. The attachment of catecholate-type of ligands (catechol, caffeic acid, gallic acid, dopamine and 2,3-dihydroxy naphthalene), salicylate-type of ligands (salicylic acid and 5-amino salicylic acid), and ascorbic acid, to the surface such γ-Al2O3 particles leads to the formation of colored powders and activates their absorption in visible-light spectral region. To the best of our knowledge, similar transformation of an insulator (Al2O3), with the band gap energy of 8.7 eV, into a semiconductor-like hybrid material with tunable optical properties has not been reported in the literature before. The density functional theory (DFT) calculations with periodic boundary conditions were performed in order to estimate the energy gaps of various inorganic/organic hybrids. The calculated values compare well with the experimental data. The good agreement between the calculated and experimentally determined band gaps was found, thus demonstrating predictive ability of the theory when proper model is used.
T2  - Microporous and Mesoporous Materials
T1  - Visible light absorption of surface-modified Al2O3 powders: A comparative DFT and experimental study
VL  - 273
SP  - 41
EP  - 49
DO  - 10.1016/j.micromeso.2018.06.053
ER  - 
@article{
author = "Đorđević, Vesna R. and Sredojević, Dušan and Dostanić, Jasmina and Lončarević, Davor and Ahrenkiel, Scott Phillip and Švrakić, Nenad M. and Brothers, Edward N. and Belić, Milivoj R. and Nedeljković, Jovan",
year = "2019",
abstract = "Surface modification of Al2O3 powders, prepared using reproducible sol-gel synthetic route with small colorless organic molecules, induces charge transfer complex formation and the appearance of absorption in the visible spectral region. Comprehensive microstructural characterization involving transmission electron microscopy, X-ray diffraction analysis, and nitrogen adsorption–desorption isotherms, revealed that γ-crystalline alumina powders consist of mesoporous particles in the size range from 0.1 to 0.3 μm, with specific surface area of 54.8 m2/g, and pore radius between 3 and 4 nm. The attachment of catecholate-type of ligands (catechol, caffeic acid, gallic acid, dopamine and 2,3-dihydroxy naphthalene), salicylate-type of ligands (salicylic acid and 5-amino salicylic acid), and ascorbic acid, to the surface such γ-Al2O3 particles leads to the formation of colored powders and activates their absorption in visible-light spectral region. To the best of our knowledge, similar transformation of an insulator (Al2O3), with the band gap energy of 8.7 eV, into a semiconductor-like hybrid material with tunable optical properties has not been reported in the literature before. The density functional theory (DFT) calculations with periodic boundary conditions were performed in order to estimate the energy gaps of various inorganic/organic hybrids. The calculated values compare well with the experimental data. The good agreement between the calculated and experimentally determined band gaps was found, thus demonstrating predictive ability of the theory when proper model is used.",
journal = "Microporous and Mesoporous Materials",
title = "Visible light absorption of surface-modified Al2O3 powders: A comparative DFT and experimental study",
volume = "273",
pages = "41-49",
doi = "10.1016/j.micromeso.2018.06.053"
}
Đorđević, V. R., Sredojević, D., Dostanić, J., Lončarević, D., Ahrenkiel, S. P., Švrakić, N. M., Brothers, E. N., Belić, M. R.,& Nedeljković, J.. (2019). Visible light absorption of surface-modified Al2O3 powders: A comparative DFT and experimental study. in Microporous and Mesoporous Materials, 273, 41-49.
https://doi.org/10.1016/j.micromeso.2018.06.053
Đorđević VR, Sredojević D, Dostanić J, Lončarević D, Ahrenkiel SP, Švrakić NM, Brothers EN, Belić MR, Nedeljković J. Visible light absorption of surface-modified Al2O3 powders: A comparative DFT and experimental study. in Microporous and Mesoporous Materials. 2019;273:41-49.
doi:10.1016/j.micromeso.2018.06.053 .
Đorđević, Vesna R., Sredojević, Dušan, Dostanić, Jasmina, Lončarević, Davor, Ahrenkiel, Scott Phillip, Švrakić, Nenad M., Brothers, Edward N., Belić, Milivoj R., Nedeljković, Jovan, "Visible light absorption of surface-modified Al2O3 powders: A comparative DFT and experimental study" in Microporous and Mesoporous Materials, 273 (2019):41-49,
https://doi.org/10.1016/j.micromeso.2018.06.053 . .
9
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Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study

Prekajski-Đorđević, Marija D.; Vukoje, Ivana D.; Lazić, Vesna M.; Đorđević, Vesna R.; Sredojević, Dušan; Dostanić, Jasmina; Lončarević, Davor; Ahrenkiel, Scott Phillip; Belić, Milivoj R.; Nedeljković, Jovan

(2019)

TY  - JOUR
AU  - Prekajski-Đorđević, Marija D.
AU  - Vukoje, Ivana D.
AU  - Lazić, Vesna M.
AU  - Đorđević, Vesna R.
AU  - Sredojević, Dušan
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Ahrenkiel, Scott Phillip
AU  - Belić, Milivoj R.
AU  - Nedeljković, Jovan
PY  - 2019
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8387
AB  - Surface modification of CeO2 nano-powder, synthesized by a self-propagating room temperature method with salicylate-type ligands (salicylic acid and 5-aminosalicylic acid) as well as catecholate-type ligands (catechol, 3,4-dihydroxybenzoic acid, caffeic acid and 2,3-dihydroxy naphthalene), induces the appearance of absorption in the visible spectral region due to the interfacial charge transfer (ICT) complex formation. Thorough characterization involving transmission electron microscopy, XRD analysis, and nitrogen adsorption-desorption isotherms, revealed that loosely agglomerated CeO2 particles of the size ranging from 2 to 4 nm have cubic fluorite structure and specific surface area of 140 m2/g. The attachment of salicylate- and catecholate-type of ligands to the surface of CeO2 powders leads to the formation of colored powders with tunable absorption in the visible spectral region. The density functional theory calculations with properly design model systems were performed to estimate the alignment of energy levels of various inorganic/organic hybrids. A reasonably good agreement between calculated values and experimental data was found. © 2019
T2  - Materials Chemistry and Physics
T1  - Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study
VL  - 236
SP  - 121816
DO  - 10.1016/j.matchemphys.2019.121816
ER  - 
@article{
author = "Prekajski-Đorđević, Marija D. and Vukoje, Ivana D. and Lazić, Vesna M. and Đorđević, Vesna R. and Sredojević, Dušan and Dostanić, Jasmina and Lončarević, Davor and Ahrenkiel, Scott Phillip and Belić, Milivoj R. and Nedeljković, Jovan",
year = "2019",
abstract = "Surface modification of CeO2 nano-powder, synthesized by a self-propagating room temperature method with salicylate-type ligands (salicylic acid and 5-aminosalicylic acid) as well as catecholate-type ligands (catechol, 3,4-dihydroxybenzoic acid, caffeic acid and 2,3-dihydroxy naphthalene), induces the appearance of absorption in the visible spectral region due to the interfacial charge transfer (ICT) complex formation. Thorough characterization involving transmission electron microscopy, XRD analysis, and nitrogen adsorption-desorption isotherms, revealed that loosely agglomerated CeO2 particles of the size ranging from 2 to 4 nm have cubic fluorite structure and specific surface area of 140 m2/g. The attachment of salicylate- and catecholate-type of ligands to the surface of CeO2 powders leads to the formation of colored powders with tunable absorption in the visible spectral region. The density functional theory calculations with properly design model systems were performed to estimate the alignment of energy levels of various inorganic/organic hybrids. A reasonably good agreement between calculated values and experimental data was found. © 2019",
journal = "Materials Chemistry and Physics",
title = "Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study",
volume = "236",
pages = "121816",
doi = "10.1016/j.matchemphys.2019.121816"
}
Prekajski-Đorđević, M. D., Vukoje, I. D., Lazić, V. M., Đorđević, V. R., Sredojević, D., Dostanić, J., Lončarević, D., Ahrenkiel, S. P., Belić, M. R.,& Nedeljković, J.. (2019). Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study. in Materials Chemistry and Physics, 236, 121816.
https://doi.org/10.1016/j.matchemphys.2019.121816
Prekajski-Đorđević MD, Vukoje ID, Lazić VM, Đorđević VR, Sredojević D, Dostanić J, Lončarević D, Ahrenkiel SP, Belić MR, Nedeljković J. Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study. in Materials Chemistry and Physics. 2019;236:121816.
doi:10.1016/j.matchemphys.2019.121816 .
Prekajski-Đorđević, Marija D., Vukoje, Ivana D., Lazić, Vesna M., Đorđević, Vesna R., Sredojević, Dušan, Dostanić, Jasmina, Lončarević, Davor, Ahrenkiel, Scott Phillip, Belić, Milivoj R., Nedeljković, Jovan, "Electronic structure of surface complexes between CeO2 and benzene derivatives: A comparative experimental and DFT study" in Materials Chemistry and Physics, 236 (2019):121816,
https://doi.org/10.1016/j.matchemphys.2019.121816 . .
3
1
3

Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel

Dostanić, Jasmina; Lončarević, Davor; Pavlović, Vladimir B.; Papan, Jelena; Nedeljković, Jovan

(2019)

TY  - JOUR
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Pavlović, Vladimir B.
AU  - Papan, Jelena
AU  - Nedeljković, Jovan
PY  - 2019
UR  - https://linkinghub.elsevier.com/retrieve/pii/S0272884219317018
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/8354
AB  - Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a function of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l.
T2  - Ceramics International
T1  - Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel
VL  - 45
IS  - 15
SP  - 19447
EP  - 19455
DO  - 10.1016/j.ceramint.2019.06.200
ER  - 
@article{
author = "Dostanić, Jasmina and Lončarević, Davor and Pavlović, Vladimir B. and Papan, Jelena and Nedeljković, Jovan",
year = "2019",
abstract = "Nickel-modified titanate/TiO2 catalysts were prepared by deposition of nickel ions onto hydrothermally prepared titanate supports, followed by hydrogen temperature-programmed reduction. Two different nickel precursors (hydroxide and carbonate) were used to tune reducibility and to vary the crystal phase structure of the final catalysts. The precursor reducibility and functional properties of the final catalysts were investigated systematically using various characterisation techniques. The results revealed a more facile reduction of the hydroxide precursor compared to its carbonate counterpart. Moreover, it was found that the formation of the anatase phase was favoured by the use of the hydroxide precipitation agent. The photocatalytic activity towards hydrogen production of the prepared catalysts was evaluated in the presence of 2-propanol under simulated solar light irradiation. A thorough study of the photocatalytic performance of the synthesised catalysts was conducted as a function of the precipitation agent used and the reduction temperature applied. The catalyst with dominant anatase crystal phase displayed the highest photocatalytic activity with a maximum H2 production rate of 1040 μmol h−1 g−1, this being more than four times higher than that of its carbonate counterpart. The catalysts with titanate structure showed similar activity, independent of the precipitation method used. The nanotubular structure was found to be the dominant factor in the stability of photocatalysts under long-run working conditions. © 2019 Elsevier Ltd and Techna Group S.r.l.",
journal = "Ceramics International",
title = "Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel",
volume = "45",
number = "15",
pages = "19447-19455",
doi = "10.1016/j.ceramint.2019.06.200"
}
Dostanić, J., Lončarević, D., Pavlović, V. B., Papan, J.,& Nedeljković, J.. (2019). Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel. in Ceramics International, 45(15), 19447-19455.
https://doi.org/10.1016/j.ceramint.2019.06.200
Dostanić J, Lončarević D, Pavlović VB, Papan J, Nedeljković J. Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel. in Ceramics International. 2019;45(15):19447-19455.
doi:10.1016/j.ceramint.2019.06.200 .
Dostanić, Jasmina, Lončarević, Davor, Pavlović, Vladimir B., Papan, Jelena, Nedeljković, Jovan, "Efficient photocatalytic hydrogen production over titanate/titania nanostructures modified with nickel" in Ceramics International, 45, no. 15 (2019):19447-19455,
https://doi.org/10.1016/j.ceramint.2019.06.200 . .
3
3
3

Simultaneous photodegradation of two textile dyes using TiO2 as a catalyst

Lončarević, Davor; Dostanić, Jasmina; Radonjić, Vojkan D.; Živković, Ljiljana; Jovanović, Dušan M.

(Springer, 2016)

TY  - JOUR
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Radonjić, Vojkan D.
AU  - Živković, Ljiljana
AU  - Jovanović, Dušan M.
PY  - 2016
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/1079
AB  - The simultaneous photocatalytic degradation of two dyes: methylene blue (MB), a cationic dye, and arylazo pyridone dye (SD), an anionic dye was investigated using sol-gel prepared TiO2 particles. The paper shows the main difference in degradation kinetics between single dye solution and binary dye solutions. The effects of competitive adsorption and the concentration of the dyes on degradation rate were analyzed. The preferential adsorption capacity of TiO2 toward MB was attributed to electrostatic interactions between the cationic dye and negatively charged TiO2 surface, while repulsion between the negatively charged surface of the catalyst and SD dye results in its lower adsorption capacity. The TiO2 surface charge and accordingly adsorption affinity of investigated dyes were found to be the main factors affecting degradation rate of the dyes. In the single dye system, the catalyst showed considerably higher degradation activity toward MB than to SD. In binary dye systems, the presence of SD did not affect the degradation of MB. On the other hand, the degradation efficiency of SD was found to be highly influenced by initial MB concentration and absorption ability of MB. In addition, higher MB concentration induces the production of a higher amount of reaction products, which also determine the SD degradation rate. Three kinetic regimes for the photodegradation of SD in binary mixtures were observed, used as a starting point to elucidate most influencing parameters for SD reaction kinetics.
PB  - Springer
T2  - Reaction Kinetics, Mechanisms and Catalysis
T1  - Simultaneous photodegradation of two textile dyes using TiO2 as a catalyst
VL  - 118
IS  - 1
SP  - 153
EP  - 164
DO  - 10.1007/s11144-016-0990-0
ER  - 
@article{
author = "Lončarević, Davor and Dostanić, Jasmina and Radonjić, Vojkan D. and Živković, Ljiljana and Jovanović, Dušan M.",
year = "2016",
abstract = "The simultaneous photocatalytic degradation of two dyes: methylene blue (MB), a cationic dye, and arylazo pyridone dye (SD), an anionic dye was investigated using sol-gel prepared TiO2 particles. The paper shows the main difference in degradation kinetics between single dye solution and binary dye solutions. The effects of competitive adsorption and the concentration of the dyes on degradation rate were analyzed. The preferential adsorption capacity of TiO2 toward MB was attributed to electrostatic interactions between the cationic dye and negatively charged TiO2 surface, while repulsion between the negatively charged surface of the catalyst and SD dye results in its lower adsorption capacity. The TiO2 surface charge and accordingly adsorption affinity of investigated dyes were found to be the main factors affecting degradation rate of the dyes. In the single dye system, the catalyst showed considerably higher degradation activity toward MB than to SD. In binary dye systems, the presence of SD did not affect the degradation of MB. On the other hand, the degradation efficiency of SD was found to be highly influenced by initial MB concentration and absorption ability of MB. In addition, higher MB concentration induces the production of a higher amount of reaction products, which also determine the SD degradation rate. Three kinetic regimes for the photodegradation of SD in binary mixtures were observed, used as a starting point to elucidate most influencing parameters for SD reaction kinetics.",
publisher = "Springer",
journal = "Reaction Kinetics, Mechanisms and Catalysis",
title = "Simultaneous photodegradation of two textile dyes using TiO2 as a catalyst",
volume = "118",
number = "1",
pages = "153-164",
doi = "10.1007/s11144-016-0990-0"
}
Lončarević, D., Dostanić, J., Radonjić, V. D., Živković, L.,& Jovanović, D. M.. (2016). Simultaneous photodegradation of two textile dyes using TiO2 as a catalyst. in Reaction Kinetics, Mechanisms and Catalysis
Springer., 118(1), 153-164.
https://doi.org/10.1007/s11144-016-0990-0
Lončarević D, Dostanić J, Radonjić VD, Živković L, Jovanović DM. Simultaneous photodegradation of two textile dyes using TiO2 as a catalyst. in Reaction Kinetics, Mechanisms and Catalysis. 2016;118(1):153-164.
doi:10.1007/s11144-016-0990-0 .
Lončarević, Davor, Dostanić, Jasmina, Radonjić, Vojkan D., Živković, Ljiljana, Jovanović, Dušan M., "Simultaneous photodegradation of two textile dyes using TiO2 as a catalyst" in Reaction Kinetics, Mechanisms and Catalysis, 118, no. 1 (2016):153-164,
https://doi.org/10.1007/s11144-016-0990-0 . .
17
14
15

Modification of dense TiO2 particles using polyethylene glycol template: Synthesis, characterization, and photocatalytic activity

Dostanić, Jasmina; Lončarević, Davor; Radosavljević-Mihajlović, Ana S.; Jovanović, Dušan M.

(Springer Nature, 2015)

TY  - JOUR
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Jovanović, Dušan M.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/814
AB  - In this study, an effort has been made to prepare TiO2 materials by sol-gel technique using polyethylene glycol (PEG) as pore directing agent. Different PEG amounts were used during samples preparation in order to investigate the change in intrinsic material properties. The photocatalytic activity of prepared catalysts was estimated by measuring the decomposition of arylazo pyridone dye. The optimum template amount was determined, resulting in catalyst with enhanced textural properties, optimal anatase/rutile ratio and hence improved photocatalytic properties. Specific surface area and anatase/rutile ratio were found to be the main contributing factors to the catalyst activity. A synergistic effect between anatase and rutile TiO2 has been observed, since the presence of relatively inactive rutile phase enhanced the photoactivity of mixed TiO2.
PB  - Springer Nature
T2  - Russian Journal of Physical Chemistry A
T1  - Modification of dense TiO2 particles using polyethylene glycol template: Synthesis, characterization, and photocatalytic activity
VL  - 89
IS  - 13
SP  - 2492
EP  - 2496
DO  - 10.1134/S0036024415130130
ER  - 
@article{
author = "Dostanić, Jasmina and Lončarević, Davor and Radosavljević-Mihajlović, Ana S. and Jovanović, Dušan M.",
year = "2015",
abstract = "In this study, an effort has been made to prepare TiO2 materials by sol-gel technique using polyethylene glycol (PEG) as pore directing agent. Different PEG amounts were used during samples preparation in order to investigate the change in intrinsic material properties. The photocatalytic activity of prepared catalysts was estimated by measuring the decomposition of arylazo pyridone dye. The optimum template amount was determined, resulting in catalyst with enhanced textural properties, optimal anatase/rutile ratio and hence improved photocatalytic properties. Specific surface area and anatase/rutile ratio were found to be the main contributing factors to the catalyst activity. A synergistic effect between anatase and rutile TiO2 has been observed, since the presence of relatively inactive rutile phase enhanced the photoactivity of mixed TiO2.",
publisher = "Springer Nature",
journal = "Russian Journal of Physical Chemistry A",
title = "Modification of dense TiO2 particles using polyethylene glycol template: Synthesis, characterization, and photocatalytic activity",
volume = "89",
number = "13",
pages = "2492-2496",
doi = "10.1134/S0036024415130130"
}
Dostanić, J., Lončarević, D., Radosavljević-Mihajlović, A. S.,& Jovanović, D. M.. (2015). Modification of dense TiO2 particles using polyethylene glycol template: Synthesis, characterization, and photocatalytic activity. in Russian Journal of Physical Chemistry A
Springer Nature., 89(13), 2492-2496.
https://doi.org/10.1134/S0036024415130130
Dostanić J, Lončarević D, Radosavljević-Mihajlović AS, Jovanović DM. Modification of dense TiO2 particles using polyethylene glycol template: Synthesis, characterization, and photocatalytic activity. in Russian Journal of Physical Chemistry A. 2015;89(13):2492-2496.
doi:10.1134/S0036024415130130 .
Dostanić, Jasmina, Lončarević, Davor, Radosavljević-Mihajlović, Ana S., Jovanović, Dušan M., "Modification of dense TiO2 particles using polyethylene glycol template: Synthesis, characterization, and photocatalytic activity" in Russian Journal of Physical Chemistry A, 89, no. 13 (2015):2492-2496,
https://doi.org/10.1134/S0036024415130130 . .

Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants

Lončarević, Davor; Dostanić, Jasmina; Radonjić, Vojkan D.; Radosavljević-Mihajlović, Ana S.; Jovanović, Dušan M.

(2015)

TY  - JOUR
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Radonjić, Vojkan D.
AU  - Radosavljević-Mihajlović, Ana S.
AU  - Jovanović, Dušan M.
PY  - 2015
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/693
AB  - This study aims to gain insights in structure-activity relationship of TiO2 photocatalysts. For this purpose photocatalysts were synthesized via classical sol-gel method using titanium isopropoxide as a precursor and polyethylene glycols (PEGs) of different molecular mass (M-n = 200, 600, 2000, 10,000) as a template agents. Incorporating PEG into TiO2 network enhanced not only catalyst porous structure, but also increased the fraction of anatase phase. The use of low-molecular-weight PEGs resulted in catalysts with increased anatase content and enlarged specific surface area. The catalyst photoactivity was estimated through degradation of organic pollutants: Reactive Black 5, arylazo pyridone dye and phenol. The results revealed that the photoactivity was following the same order independently of target pollutant: TiO2/P600 GT TiO2/P200 GT TiO2/P2000 GT TiO2/P10000 GT TiO2. BET surface area and anatase fraction, rather than pore diameter or pore volume, were found to be predominant catalyst property determining the activity for particular reaction system. The existence of synergistic effect between anatase and rutile phases was confirmed for the most active catalysts TiO2/P200 and TiO2/P600. These catalysts showed similar activity in dye degradation, while TiO2/P200 displayed significantly lower activity in phenol degradation, which was attributed to its lower sorption capacity and lower UV light utilization. The difference in the reactivity between investigated pollutants was discussed in relationship with their size, structure and sorption ability. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.
T2  - Advanced Powder Technology
T1  - Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants
VL  - 26
IS  - 4
SP  - 1162
EP  - 1170
DO  - 10.1016/j.apt.2015.05.012
ER  - 
@article{
author = "Lončarević, Davor and Dostanić, Jasmina and Radonjić, Vojkan D. and Radosavljević-Mihajlović, Ana S. and Jovanović, Dušan M.",
year = "2015",
abstract = "This study aims to gain insights in structure-activity relationship of TiO2 photocatalysts. For this purpose photocatalysts were synthesized via classical sol-gel method using titanium isopropoxide as a precursor and polyethylene glycols (PEGs) of different molecular mass (M-n = 200, 600, 2000, 10,000) as a template agents. Incorporating PEG into TiO2 network enhanced not only catalyst porous structure, but also increased the fraction of anatase phase. The use of low-molecular-weight PEGs resulted in catalysts with increased anatase content and enlarged specific surface area. The catalyst photoactivity was estimated through degradation of organic pollutants: Reactive Black 5, arylazo pyridone dye and phenol. The results revealed that the photoactivity was following the same order independently of target pollutant: TiO2/P600 GT TiO2/P200 GT TiO2/P2000 GT TiO2/P10000 GT TiO2. BET surface area and anatase fraction, rather than pore diameter or pore volume, were found to be predominant catalyst property determining the activity for particular reaction system. The existence of synergistic effect between anatase and rutile phases was confirmed for the most active catalysts TiO2/P200 and TiO2/P600. These catalysts showed similar activity in dye degradation, while TiO2/P200 displayed significantly lower activity in phenol degradation, which was attributed to its lower sorption capacity and lower UV light utilization. The difference in the reactivity between investigated pollutants was discussed in relationship with their size, structure and sorption ability. (C) 2015 The Society of Powder Technology Japan. Published by Elsevier B.V. and The Society of Powder Technology Japan. All rights reserved.",
journal = "Advanced Powder Technology",
title = "Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants",
volume = "26",
number = "4",
pages = "1162-1170",
doi = "10.1016/j.apt.2015.05.012"
}
Lončarević, D., Dostanić, J., Radonjić, V. D., Radosavljević-Mihajlović, A. S.,& Jovanović, D. M.. (2015). Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants. in Advanced Powder Technology, 26(4), 1162-1170.
https://doi.org/10.1016/j.apt.2015.05.012
Lončarević D, Dostanić J, Radonjić VD, Radosavljević-Mihajlović AS, Jovanović DM. Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants. in Advanced Powder Technology. 2015;26(4):1162-1170.
doi:10.1016/j.apt.2015.05.012 .
Lončarević, Davor, Dostanić, Jasmina, Radonjić, Vojkan D., Radosavljević-Mihajlović, Ana S., Jovanović, Dušan M., "Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants" in Advanced Powder Technology, 26, no. 4 (2015):1162-1170,
https://doi.org/10.1016/j.apt.2015.05.012 . .
6
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Photocatalytic activity of peg-modified catalysts

Lončarević, Davor; Dostanić, Jasmina; Radosavljević-Mihajlović, Ana S.

(Society of Physical Chemists of Serbia, 2014)

TY  - CONF
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Radosavljević-Mihajlović, Ana S.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9186
AB  - This work is focused on the influence of polyethylene glycol (PEG) on
structural, textural and photocatalytic properties of titanium dioxide (TiO2)
catalyst. Catalysts were synthesized by sol-gel method using PEG with
different molecular weight (600 and 10000) as pore generating agent. The
results showed that PEG enhances not only porous structure but also change
anatase to rutile ratio. The photocatalytic activity of the synthesized catalyst
was measured by decomposition of phenol. The order of catalyst
photoactivity was: TiO2/P600>TiO2/P10000>TiO2.The difference in catalyst
photoactivity is attributed to their surface area and anatase fraction, rather
then pore size.
PB  - Society of Physical Chemists of Serbia
C3  - PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Photocatalytic activity of peg-modified catalysts
VL  - C-06-P
ER  - 
@conference{
author = "Lončarević, Davor and Dostanić, Jasmina and Radosavljević-Mihajlović, Ana S.",
year = "2014",
abstract = "This work is focused on the influence of polyethylene glycol (PEG) on
structural, textural and photocatalytic properties of titanium dioxide (TiO2)
catalyst. Catalysts were synthesized by sol-gel method using PEG with
different molecular weight (600 and 10000) as pore generating agent. The
results showed that PEG enhances not only porous structure but also change
anatase to rutile ratio. The photocatalytic activity of the synthesized catalyst
was measured by decomposition of phenol. The order of catalyst
photoactivity was: TiO2/P600>TiO2/P10000>TiO2.The difference in catalyst
photoactivity is attributed to their surface area and anatase fraction, rather
then pore size.",
publisher = "Society of Physical Chemists of Serbia",
journal = "PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Photocatalytic activity of peg-modified catalysts",
volume = "C-06-P"
}
Lončarević, D., Dostanić, J.,& Radosavljević-Mihajlović, A. S.. (2014). Photocatalytic activity of peg-modified catalysts. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., C-06-P.
Lončarević D, Dostanić J, Radosavljević-Mihajlović AS. Photocatalytic activity of peg-modified catalysts. in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;C-06-P..
Lončarević, Davor, Dostanić, Jasmina, Radosavljević-Mihajlović, Ana S., "Photocatalytic activity of peg-modified catalysts" in PHYSICAL CHEMISTRY 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, C-06-P (2014).

Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method

Dostanic, Jasmina; Grbic, Bosko; Radić, Nenad; Stefanov, Plamen; Šaponjić, Zoran; Buha, Jelena; Mijin, Dušan Ž.

(2012)

TY  - JOUR
AU  - Dostanic, Jasmina
AU  - Grbic, Bosko
AU  - Radić, Nenad
AU  - Stefanov, Plamen
AU  - Šaponjić, Zoran
AU  - Buha, Jelena
AU  - Mijin, Dušan Ž.
PY  - 2012
UR  - http://vinar.vin.bg.ac.rs/handle/123456789/4701
AB  - In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 degrees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Chemical Engineering Journal
T1  - Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method
VL  - 180
SP  - 57
EP  - 65
DO  - 10.1016/j.cej.2011.10.100
ER  - 
@article{
author = "Dostanic, Jasmina and Grbic, Bosko and Radić, Nenad and Stefanov, Plamen and Šaponjić, Zoran and Buha, Jelena and Mijin, Dušan Ž.",
year = "2012",
abstract = "In this study, the feasibility of preparing porous TiO2 films on a stainless steel substrate from a hydrothermally prepared colloidal TiO2 solution by the spray pyrolysis technique is presented. The prepared samples were annealed at different temperatures and characterized by the XPS, XRD and SEM techniques, porosimetry and specific surface area measurements. The photocatalytic activities of the resulting films were evaluated by measuring the degradation of an azo pyridone dye, used as model pollutant, under simulated sunlight conditions. The relationships between the structural and morphological characteristics of the TiO2 films and their photoactivity were observed. It was found that the photoactivity was markedly dependent on the annealing temperature. On increasing the calcination temperature from 500 degrees C to 700 degrees C, the crystallite size and the rutile content increased, whereas the specific surface area and the rate of photodegradation decreased. Calcination at 700 degrees C resulted in a completely loss of photoactivity, due to the partial transformation of anatase to rutile phase, the increased crystallite size and decreased specific surface area. Specific activity (per unit of mass and per unit of surface area) was lowered within thicker films, pointing out significance of transport phenomena through porous films (the transport of dye and the transmittance of light as immaterial reagent). Based on the obtained results, the spray pyrolysis method appears to be a good choice for the preparation of photocatalytically active TiO2 films for the removal of dye pollutants. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Chemical Engineering Journal",
title = "Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method",
volume = "180",
pages = "57-65",
doi = "10.1016/j.cej.2011.10.100"
}
Dostanic, J., Grbic, B., Radić, N., Stefanov, P., Šaponjić, Z., Buha, J.,& Mijin, D. Ž.. (2012). Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method. in Chemical Engineering Journal, 180, 57-65.
https://doi.org/10.1016/j.cej.2011.10.100
Dostanic J, Grbic B, Radić N, Stefanov P, Šaponjić Z, Buha J, Mijin DŽ. Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method. in Chemical Engineering Journal. 2012;180:57-65.
doi:10.1016/j.cej.2011.10.100 .
Dostanic, Jasmina, Grbic, Bosko, Radić, Nenad, Stefanov, Plamen, Šaponjić, Zoran, Buha, Jelena, Mijin, Dušan Ž., "Photodegradation of an azo pyridone dye using TiO2 films prepared by the spray pyrolysis method" in Chemical Engineering Journal, 180 (2012):57-65,
https://doi.org/10.1016/j.cej.2011.10.100 . .
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