TY  - JOUR
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Radonjić, Vojkan
AU  - Radosavljevic-Mihajlovic, A
AU  - Jovanović, Dušan M.
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1700
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 > TiO2/P200 > TiO2/P2000 > TiO2/P10000 > 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.
PB  - Elsevier
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 and Radosavljevic-Mihajlovic, A 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 > TiO2/P200 > TiO2/P2000 > TiO2/P10000 > 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.",
publisher = "Elsevier",
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., Radosavljevic-Mihajlovic, A.,& Jovanović, D. M.. (2015). Structure-activity relationship of nanosized porous PEG-modified TiO2 powders in degradation of organic pollutants. in Advanced Powder Technology
Elsevier., 26(4), 1162-1170.
https://doi.org/10.1016/j.apt.2015.05.012

Lončarević D, Dostanić J, Radonjić V, Radosavljevic-Mihajlovic A, 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, Radosavljevic-Mihajlovic, A, 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 . .

TY  - JOUR
AU  - Dostanić, Jasmina
AU  - Lončarević, Davor
AU  - Radosavljevic-Mihajlovic, A
AU  - Jovanović, Dušan M.
PY  - 2015
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1824
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  - Maik Nauka/Interperiodica/Springer, New York
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 Radosavljevic-Mihajlovic, A 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 = "Maik Nauka/Interperiodica/Springer, New York",
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., Radosavljevic-Mihajlovic, A.,& 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
Maik Nauka/Interperiodica/Springer, New York., 89(13), 2492-2496.
https://doi.org/10.1134/S0036024415130130

Dostanić J, Lončarević D, Radosavljevic-Mihajlovic A, 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, Radosavljevic-Mihajlovic, A, 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 . .

TY  - CONF
AU  - Lončarević, Davor
AU  - Dostanić, Jasmina
AU  - Radosavljević-Mihajlović, Ana S.
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7454
AB  - This work is focused on the influence of polyethylene glycol (PEG) onstructural, textural and photocatalytic properties of titanium dioxide (TiO2)catalyst. Catalysts were synthesized by sol-gel method using PEG withdifferent molecular weight (600 and 10000) as pore generating agent. Theresults showed that PEG enhances not only porous structure but also changeanatase to rutile ratio. The photocatalytic activity of the synthesized catalystwas measured by decomposition of phenol. The order of catalystphotoactivity was: TiO2/P600>TiO2/P10000>TiO2.The difference in catalystphotoactivity is attributed to their surface area and anatase fraction, ratherthen 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
UR  - https://hdl.handle.net/21.15107/rcub_cer_7454
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) onstructural, textural and photocatalytic properties of titanium dioxide (TiO2)catalyst. Catalysts were synthesized by sol-gel method using PEG withdifferent molecular weight (600 and 10000) as pore generating agent. Theresults showed that PEG enhances not only porous structure but also changeanatase to rutile ratio. The photocatalytic activity of the synthesized catalystwas measured by decomposition of phenol. The order of catalystphotoactivity was: TiO2/P600>TiO2/P10000>TiO2.The difference in catalystphotoactivity is attributed to their surface area and anatase fraction, ratherthen 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",
url = "https://hdl.handle.net/21.15107/rcub_cer_7454"
}

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.
https://hdl.handle.net/21.15107/rcub_cer_7454

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.
https://hdl.handle.net/21.15107/rcub_cer_7454 .

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),
https://hdl.handle.net/21.15107/rcub_cer_7454 .