Characterization of $TiO_2$ synthesized in alcohol by a sol-gel process: The effects of annealing temperature and acid catalyst

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dc.contributor.authorSayılkan, Funda
dc.contributor.authorAsiltürk, Meltem
dc.contributor.authorSayılkan, Hikmet
dc.contributor.authorÖnal, Yunus
dc.contributor.authorAkarsu, Murat
dc.contributor.authorArpaç, Ertuğrul
dc.date.accessioned2024-08-04T19:54:38Z
dc.date.available2024-08-04T19:54:38Z
dc.date.issued2005
dc.departmentİnönü Üniversitesien_US
dc.description.abstractThe effects of annealing temperature and hydrolysis catalyst on the crystalline form and crystallite size of $TiO_2$ prepared by a sol-gel process were investigated. Three types of $TiO_2$ were synthesized by hydrolysis of titanium(IV)-iso-propoxide with water in n-propanol without catalyst (Type-A) and with HCl as catalyst, where the $H^+/Ti^{4+}$ mol ratio was 0.54 for Type-B and 0.2 for Type-C. Hydrolysis products were thermally treated at 100, 200, 300, 400 and 500 °C for 1 h after drying at room temperature. Characterization of the particles was carried out using XRD, BET, TG/DTA and SEM analysis. The pore size distributions were computed by the DFT plus method. The results showed that the acid catalyst and catalyst/alkoxide ratio have a large effect on the formation of anatase $TiO_2$. In particular, it was found that anatase phase $TiO_2$ particles occur at 400 and 500 °C for Type-A $TiO_2$, while they do so at nearly 200 °C for Type-B and Type-C $TiO_2$. The crystallite size of Type-A, Type-B and Type-C increased from 17.96 to 19.24 nm, from 12.38 to 15.12 nm and from 10.60 to 12.20 nm, respectively, when the thermal treatment temperature was raised from 400 to 500 °C.en_US
dc.identifier.endpage706en_US
dc.identifier.issn1300-0527
dc.identifier.issn1303-6130
dc.identifier.issue6en_US
dc.identifier.startpage697en_US
dc.identifier.trdizinid50478en_US
dc.identifier.urihttps://search.trdizin.gov.tr/yayin/detay/50478
dc.identifier.urihttps://hdl.handle.net/11616/89973
dc.identifier.volume29en_US
dc.indekslendigikaynakTR-Dizinen_US
dc.language.isoenen_US
dc.relation.ispartofTurkish Journal of Chemistryen_US
dc.relation.publicationcategoryMakale - Ulusal Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.titleCharacterization of $TiO_2$ synthesized in alcohol by a sol-gel process: The effects of annealing temperature and acid catalysten_US
dc.typeArticleen_US

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