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Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method
dc.creator | Stanciu, Irina | |
dc.creator | Predoana, Luminita | |
dc.creator | Cusu, Jeanina Pandele | |
dc.creator | Preda, Silviu | |
dc.creator | Anastasescu, Mihai | |
dc.creator | Vojisavljević, Katarina | |
dc.creator | Malic, Barbara | |
dc.creator | Zaharescu, Maria | |
dc.date.accessioned | 2022-04-05T15:07:41Z | |
dc.date.available | 2022-04-05T15:07:41Z | |
dc.date.issued | 2017 | |
dc.identifier.issn | 1388-6150 | |
dc.identifier.uri | http://rimsi.imsi.bg.ac.rs/handle/123456789/1040 | |
dc.description.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. | en |
dc.publisher | Springer, Dordrecht | |
dc.relation | research programme "Materials Science and Advanced Methods for Characterization" of "Ilie Murgulescu" Institute of Physical Chemistry - Roumanian Academy [PN-IIPT-PCCA-2013-4(0864)-(94/2014)] | |
dc.relation | EU (ERDF)European Commission | |
dc.relation | Roumanian Government [19/01.03.2009] | |
dc.relation | Slovenian Research AgencySlovenian Research Agency - Slovenia [P2-0105] | |
dc.rights | restrictedAccess | |
dc.source | Journal of Thermal Analysis and Calorimetry | |
dc.subject | TiO2-based gels | en |
dc.subject | Thermal behaviour | en |
dc.subject | Microwave-assisted sol-gel method | en |
dc.title | Thermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel method | en |
dc.type | article | |
dc.rights.license | ARR | |
dc.citation.epage | 651 | |
dc.citation.issue | 2 | |
dc.citation.other | 130(2): 639-651 | |
dc.citation.rank | M22 | |
dc.citation.spage | 639 | |
dc.citation.volume | 130 | |
dc.identifier.doi | 10.1007/s10973-017-6478-y | |
dc.identifier.scopus | 2-s2.0-85020306631 | |
dc.identifier.wos | 000413264100003 | |
dc.type.version | publishedVersion |