TY  - JOUR
AU  - Košević, Milica
AU  - Šekularac, Gavrilo
AU  - Živković, Ljiljana
AU  - Panić, Vladimir
AU  - Nikolić, Branislav Ž.
PY  - 2017
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1836
AB  - TiO2 powder was synthesized by a forced hydrolysis process and used for the synthesis of Pt/TiO2 composite that is to be foreseen as an advanced electrode material. Pt was incorporated into the synthesized TiO2 from a Pt colloidal dispersion as a precursor prepared by a microwave- assisted polyol process. Physicochemical properties of TiO2 and TiO2- supported Pt were investigated by scanning electron microscopy, dynamic light scattering and X- ray spectroscopy and diffraction techniques. The properties of Pt/TiO2 composite are correlated to the basic voltammetric response of its thin-layer form. It was found that subsequent thermal treatment of synthesized TiO2, which caused crystallization into mainly rutile phase, is required for appropriate Pt incorporation. Although being appropriately loaded by Pt, and the voltammetric response is typical for Pt-based material, the voltammetry of Pt/TiO2 corresponded to much lower loadings.The possibility for Pt particles to be trapped inside TiO2 agglomerates is indicated. The catalyst usage from the synthesized Pt/TiO2 was found quite moderate due to this trapping.
T2  - Croatica Chemica Acta
T1  - TiO2 From Colloidal Dispersion as Support in Pt/TiO2 Nanocomposite for Electrochemical Applications
VL  - 90
IS  - 2
SP  - 251
EP  - 258
DO  - 10.5562/cca3175
ER  - 

@article{
author = "Košević, Milica and Šekularac, Gavrilo and Živković, Ljiljana and Panić, Vladimir and Nikolić, Branislav Ž.",
year = "2017",
abstract = "TiO2 powder was synthesized by a forced hydrolysis process and used for the synthesis of Pt/TiO2 composite that is to be foreseen as an advanced electrode material. Pt was incorporated into the synthesized TiO2 from a Pt colloidal dispersion as a precursor prepared by a microwave- assisted polyol process. Physicochemical properties of TiO2 and TiO2- supported Pt were investigated by scanning electron microscopy, dynamic light scattering and X- ray spectroscopy and diffraction techniques. The properties of Pt/TiO2 composite are correlated to the basic voltammetric response of its thin-layer form. It was found that subsequent thermal treatment of synthesized TiO2, which caused crystallization into mainly rutile phase, is required for appropriate Pt incorporation. Although being appropriately loaded by Pt, and the voltammetric response is typical for Pt-based material, the voltammetry of Pt/TiO2 corresponded to much lower loadings.The possibility for Pt particles to be trapped inside TiO2 agglomerates is indicated. The catalyst usage from the synthesized Pt/TiO2 was found quite moderate due to this trapping.",
journal = "Croatica Chemica Acta",
title = "TiO2 From Colloidal Dispersion as Support in Pt/TiO2 Nanocomposite for Electrochemical Applications",
volume = "90",
number = "2",
pages = "251-258",
doi = "10.5562/cca3175"
}

Košević, M., Šekularac, G., Živković, L., Panić, V.,& Nikolić, B. Ž.. (2017). TiO2 From Colloidal Dispersion as Support in Pt/TiO2 Nanocomposite for Electrochemical Applications. in Croatica Chemica Acta, 90(2), 251-258.
https://doi.org/10.5562/cca3175

Košević M, Šekularac G, Živković L, Panić V, Nikolić BŽ. TiO2 From Colloidal Dispersion as Support in Pt/TiO2 Nanocomposite for Electrochemical Applications. in Croatica Chemica Acta. 2017;90(2):251-258.
doi:10.5562/cca3175 .

Košević, Milica, Šekularac, Gavrilo, Živković, Ljiljana, Panić, Vladimir, Nikolić, Branislav Ž., "TiO2 From Colloidal Dispersion as Support in Pt/TiO2 Nanocomposite for Electrochemical Applications" in Croatica Chemica Acta, 90, no. 2 (2017):251-258,
https://doi.org/10.5562/cca3175 . .

TY  - JOUR
AU  - Pavelkić, Vesna M.
AU  - Brdarić, Tanja
AU  - Petrović, Marija P.
AU  - Šekularac, Gavrilo M.
AU  - Košević, Milica G.
AU  - Pezo, Lato
AU  - Ilić Marija A. 
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/944
AB  - The applicability of Peleg model was investigated for predicting mass transfer kinetics during the osmotic dehydration (OD) process of pears, at different concentrations (40, 60 and 70%, w/w) and temperatures (20, 35 and 50 degrees C) of sucrose solution. Increase in sucrose solution concentration resulted in higher water loss (WL) and solid gain (SG) values through the osmotic treatment period. After 360 min of osmotic treatment of pears, WL ranged from 23.71 to 31.68% at 20 degrees C, from 24.80 to 40.38% at 35 degrees C and from 33.30 to 52.07% at 50 degrees C of initial weight of pears. The increase of dry mass of the samples, SG, after 360 min of osmotic treatment ranged from 3.02 to 6.68% at 20 degrees C, from 4.15 to 7.71% at 35 degrees C and from 5.00 to 8.92% at 50 degrees C. Pelegs rate constants, k(1)(WL) and k(1)(SG), decreased with increasing temperature, as well as decreased with increasing concentration of osmotic solution at constant temperature. Both capacity constants k(2)(WL) and k(2)(SG) also exhibited the inverse relationship between capacity constant and temperature, as well as concentration of the osmotic solution. Pelegs rate constants for WL and SG at all temperatures followed an Arrhenius type relationship. The predicted equilibrium values were very close to experimental ones, which was confirmed with high coefficients of determination and by the residual analysis.
T2  - Chemical Industry and Chemical Engineering Quarterly / CICEQ
T1  - Application of Peleg Model on Mass Transfer Kinetics During Osmotic Dehydratation of Pear Cubes in Sucrose Solution
VL  - 21
IS  - 4
SP  - 485
EP  - 492
DO  - 10.2298/CICEQ141014004P
ER  - 

@article{
author = "Pavelkić, Vesna M. and Brdarić, Tanja and Petrović, Marija P. and Šekularac, Gavrilo M. and Košević, Milica G. and Pezo, Lato and Ilić Marija A. ",
year = "2015",
abstract = "The applicability of Peleg model was investigated for predicting mass transfer kinetics during the osmotic dehydration (OD) process of pears, at different concentrations (40, 60 and 70%, w/w) and temperatures (20, 35 and 50 degrees C) of sucrose solution. Increase in sucrose solution concentration resulted in higher water loss (WL) and solid gain (SG) values through the osmotic treatment period. After 360 min of osmotic treatment of pears, WL ranged from 23.71 to 31.68% at 20 degrees C, from 24.80 to 40.38% at 35 degrees C and from 33.30 to 52.07% at 50 degrees C of initial weight of pears. The increase of dry mass of the samples, SG, after 360 min of osmotic treatment ranged from 3.02 to 6.68% at 20 degrees C, from 4.15 to 7.71% at 35 degrees C and from 5.00 to 8.92% at 50 degrees C. Pelegs rate constants, k(1)(WL) and k(1)(SG), decreased with increasing temperature, as well as decreased with increasing concentration of osmotic solution at constant temperature. Both capacity constants k(2)(WL) and k(2)(SG) also exhibited the inverse relationship between capacity constant and temperature, as well as concentration of the osmotic solution. Pelegs rate constants for WL and SG at all temperatures followed an Arrhenius type relationship. The predicted equilibrium values were very close to experimental ones, which was confirmed with high coefficients of determination and by the residual analysis.",
journal = "Chemical Industry and Chemical Engineering Quarterly / CICEQ",
title = "Application of Peleg Model on Mass Transfer Kinetics During Osmotic Dehydratation of Pear Cubes in Sucrose Solution",
volume = "21",
number = "4",
pages = "485-492",
doi = "10.2298/CICEQ141014004P"
}

Pavelkić, V. M., Brdarić, T., Petrović, M. P., Šekularac, G. M., Košević, M. G., Pezo, L.,& Ilić Marija A. . (2015). Application of Peleg Model on Mass Transfer Kinetics During Osmotic Dehydratation of Pear Cubes in Sucrose Solution. in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 21(4), 485-492.
https://doi.org/10.2298/CICEQ141014004P

Pavelkić VM, Brdarić T, Petrović MP, Šekularac GM, Košević MG, Pezo L, Ilić Marija A. . Application of Peleg Model on Mass Transfer Kinetics During Osmotic Dehydratation of Pear Cubes in Sucrose Solution. in Chemical Industry and Chemical Engineering Quarterly / CICEQ. 2015;21(4):485-492.
doi:10.2298/CICEQ141014004P .

Pavelkić, Vesna M., Brdarić, Tanja, Petrović, Marija P., Šekularac, Gavrilo M., Košević, Milica G., Pezo, Lato, Ilić Marija A. , "Application of Peleg Model on Mass Transfer Kinetics During Osmotic Dehydratation of Pear Cubes in Sucrose Solution" in Chemical Industry and Chemical Engineering Quarterly / CICEQ, 21, no. 4 (2015):485-492,
https://doi.org/10.2298/CICEQ141014004P . .