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dc.creatorStanciu, Irina
dc.creatorPredoana, Luminita
dc.creatorCusu, Jeanina Pandele
dc.creatorPreda, Silviu
dc.creatorAnastasescu, Mihai
dc.creatorVojisavljević, Katarina
dc.creatorMalic, Barbara
dc.creatorZaharescu, Maria
dc.date.accessioned2022-04-05T15:07:41Z
dc.date.available2022-04-05T15:07:41Z
dc.date.issued2017
dc.identifier.issn1388-6150
dc.identifier.urihttp://rimsi.imsi.bg.ac.rs/handle/123456789/1040
dc.description.abstractIn 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.publisherSpringer, Dordrecht
dc.relationresearch 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.relationEU (ERDF)European Commission
dc.relationRoumanian Government [19/01.03.2009]
dc.relationSlovenian Research AgencySlovenian Research Agency - Slovenia [P2-0105]
dc.rightsrestrictedAccess
dc.sourceJournal of Thermal Analysis and Calorimetry
dc.subjectTiO2-based gelsen
dc.subjectThermal behaviouren
dc.subjectMicrowave-assisted sol-gel methoden
dc.titleThermal behaviour of the TiO2-based gels obtained by microwave-assisted sol-gel methoden
dc.typearticle
dc.rights.licenseARR
dc.citation.epage651
dc.citation.issue2
dc.citation.other130(2): 639-651
dc.citation.rankM22
dc.citation.spage639
dc.citation.volume130
dc.identifier.doi10.1007/s10973-017-6478-y
dc.identifier.scopus2-s2.0-85020306631
dc.identifier.wos000413264100003
dc.type.versionpublishedVersion


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