TY  - JOUR
AU  - Stanciu, Irina
AU  - Predoana, Luminita
AU  - Cusu, Jeanina Pandele
AU  - Preda, Silviu
AU  - Anastasescu, Mihai
AU  - Vojisavljević, Katarina
AU  - Malic, Barbara
AU  - Zaharescu, Maria
PY  - 2017
UR  - http://rimsi.imsi.bg.ac.rs/handle/123456789/1040
AB  - In order to establish the influence of the preparation method on thermal behaviour of gels obtained by the sol-gel and microwave-assisted sol-gel methods, a comparative thermal analysis study was conducted by the thermogravimetric and differential thermal analysis (TG/DTG/DTA) and evolved gas analysis (EGA) on TiO2 and V2O5-doped TiO2 gels, where TiO2:V2O5 molar ratio was set to 99.95:0.05 and 98.0:2.0. In contrast to TiO2 gels, for which the thermal behaviour was not significantly influenced by the preparation method, the microwave-irradiated binary samples showed a more complex and prolonged decomposition compared to their non-irradiated counterparts. This observation was correlated with influence of microwaves in enhancing the reaction rate between the Ti and V reagents leading to formation of more complex compositions of gels. Based on TG/DTG/DTA results, the temperatures of 300 and 450 A degrees C were chosen for the processing of powders in air. All samples thermally treated at 300 and 450 A degrees C crystallized in a single anatase phase except the TiO2:V2O5 with a molar ratio 99.95:0.05, obtained by microwave-assisted sol-gel method that contains also small amount of rutile phase. At 550 A degrees C all samples contain mixture of anatase and rutile phases.
PB  - Springer, Dordrecht
T2  - Journal of Thermal Analysis and Calorimetry
T1  - Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method
EP  - 651
IS  - 2
SP  - 639
VL  - 130
DO  - 10.1007/s10973-017-6478-y
ER  - 

@article{
author = "Stanciu, Irina and Predoana, Luminita and Cusu, Jeanina Pandele and Preda, Silviu and Anastasescu, Mihai and Vojisavljević, Katarina and Malic, Barbara and Zaharescu, Maria",
year = "2017",
abstract = "In order to establish the influence of the preparation method on thermal behaviour of gels obtained by the sol-gel and microwave-assisted sol-gel methods, a comparative thermal analysis study was conducted by the thermogravimetric and differential thermal analysis (TG/DTG/DTA) and evolved gas analysis (EGA) on TiO2 and V2O5-doped TiO2 gels, where TiO2:V2O5 molar ratio was set to 99.95:0.05 and 98.0:2.0. In contrast to TiO2 gels, for which the thermal behaviour was not significantly influenced by the preparation method, the microwave-irradiated binary samples showed a more complex and prolonged decomposition compared to their non-irradiated counterparts. This observation was correlated with influence of microwaves in enhancing the reaction rate between the Ti and V reagents leading to formation of more complex compositions of gels. Based on TG/DTG/DTA results, the temperatures of 300 and 450 A degrees C were chosen for the processing of powders in air. All samples thermally treated at 300 and 450 A degrees C crystallized in a single anatase phase except the TiO2:V2O5 with a molar ratio 99.95:0.05, obtained by microwave-assisted sol-gel method that contains also small amount of rutile phase. At 550 A degrees C all samples contain mixture of anatase and rutile phases.",
publisher = "Springer, Dordrecht",
journal = "Journal of Thermal Analysis and Calorimetry",
title = "Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method",
pages = "651-639",
number = "2",
volume = "130",
doi = "10.1007/s10973-017-6478-y"
}

Stanciu, I., Predoana, L., Cusu, J. P., Preda, S., Anastasescu, M., Vojisavljević, K., Malic, B.,& Zaharescu, M.. (2017). Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method. in Journal of Thermal Analysis and Calorimetry
Springer, Dordrecht., 130(2), 639-651.
https://doi.org/10.1007/s10973-017-6478-y

Stanciu I, Predoana L, Cusu JP, Preda S, Anastasescu M, Vojisavljević K, Malic B, Zaharescu M. Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method. in Journal of Thermal Analysis and Calorimetry. 2017;130(2):639-651.
doi:10.1007/s10973-017-6478-y .

Stanciu, Irina, Predoana, Luminita, Cusu, Jeanina Pandele, Preda, Silviu, Anastasescu, Mihai, Vojisavljević, Katarina, Malic, Barbara, Zaharescu, Maria, "Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method" in Journal of Thermal Analysis and Calorimetry, 130, no. 2 (2017):639-651,
https://doi.org/10.1007/s10973-017-6478-y . .