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Effect of heating rate on structure, morphology and photocatalytic properties of TiO2 particles: thermal kinetic and thermodynamic studies

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dc.contributor.authorKIRAN YILDIRIM, BERÇEM
dc.contributor.authorsDikici, Tuncay; Demirci, Selim; Tuncay, Mehmet Masum; Yildirim, Bercem Kiran; Kaya, Nusret
dc.date.accessioned2022-03-12T22:57:25Z
dc.date.available2022-03-12T22:57:25Z
dc.date.issued2021
dc.description.abstractIn this study, TiO2 powders were produced via sol-gel route at 500 degrees C for 2 h with distinct heating rates. TGA-DTA, XRD, SEM, Raman spectroscopy, XPS, UV-vis spectroscopy and photoluminescence characterization techniques were carried out for TiO2 powders. Photocatalytic efficiency of TiO2 powders on degradation of methylene blue (MB) solution was examined in terms of different heating rates. Thermodynamic and non-isothermal kinetic study of TiO2 powders were estimated. TiO2 powders showed anatase phase based on XRD results. Surface morphology of TiO2 powders did not change with different heating rates. It can be concluded that heating rate played important role on band gap and photocatalytic activity. The band gap of the TiO2 particles decreased from 3.25 to 2.95 with increasing heating rate. The photocatalytic activity results exhibit that T1 powders have the highest photocatalytic performances. The kinetic constant and photocatalytic degradation rate were 0.00678 min(-1) and 83.48%, respectively. This could be attributed to high crystalline structure and low bulk vacancies or defects. Furthermore, TiO2 powders showed good stability. This study exhibited a new way to enhance the photocatalytic performances of pure TiO2 powders. [GRAPHICS]
dc.identifier.doi10.1007/s10971-020-05466-x
dc.identifier.eissn1573-4846
dc.identifier.issn0928-0707
dc.identifier.urihttps://hdl.handle.net/11424/237038
dc.identifier.wosWOS:000614679000004
dc.language.isoeng
dc.publisherSPRINGER
dc.relation.ispartofJOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectSol-gel
dc.subjectHeating rate
dc.subjectNon-isothermal kinetic
dc.subjectThermodynamic properties
dc.subjectPhotocatalytic activity
dc.titleEffect of heating rate on structure, morphology and photocatalytic properties of TiO2 particles: thermal kinetic and thermodynamic studies
dc.typearticle
dspace.entity.typePublication
local.avesis.id8d9e841d-e7be-4601-9139-5f92ac7ca334
local.import.packageSS17
local.indexed.atWOS
local.indexed.atSCOPUS
local.journal.numberofpages16
oaire.citation.endPage637
oaire.citation.issue3
oaire.citation.startPage622
oaire.citation.titleJOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
oaire.citation.volume97
relation.isAuthorOfPublicationca46686c-07b4-4382-8b25-ced916e506ac
relation.isAuthorOfPublication.latestForDiscoveryca46686c-07b4-4382-8b25-ced916e506ac

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