A comparative study for removal of different dyes over M/TiO2 (M = Cu, Ni, Co, Fe, Mn and Cr) photocatalysts under visible light irradiation

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dc.contributor.authorKerkez-Kuyumcu, Ozge
dc.contributor.authorKibar, Efgan
dc.contributor.authorDayioglu, Kubra
dc.contributor.authorGedik, Fadime
dc.contributor.authorAkin, Ayse NIlgun
dc.contributor.authorOzkara-Aydinoglu, Seyma
dc.date.accessioned2024-03-13T10:35:01Z
dc.date.available2024-03-13T10:35:01Z
dc.date.issued2015
dc.departmentİstanbul Beykent Üniversitesien_US
dc.description.abstractThe purpose of this work is to design and develop a series of stable and effective TiO2 photocatalysts prepared by a modified precipitation method. In order to improve the photo response of the TiO2 to the visible region, the effect of addition of six successive transition metal elements of fourth period, namely chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), and copper (Cu) was studied. Two different types of dyes, methyl orange (MO, azo dye) and methylene blue (MB, thiazine dye group), were used to investigate the influence of structure of dyes on the photocatalytic degradation rates. The results showed that loading titania with 0.3 wt.% of different transition metal elements was found to have significant influences on the crystallographic structure, physical properties and optical absorption properties of titania based catalysts, as well as catalytic activity during dye degradation reactions. The optical reflection edge was obviously shifted to the visible light range with the transition metal additives. The band gap energies of the doped TiO2 samples were considerably narrower than that of plain TiO2. The different activity levels of the catalysts for both dyes clearly show that the photocatalytic activity of samples strongly depended on the metal dopant used. Among all the catalysts, Cu/TiO2 sample exhibited the highest photocatalytic activity under visible light for both of the dyes owing to the low band gap energy and delayed electron-hole recombination. (C) 2015 Elsevier B.V. All rights reserved.en_US
dc.description.sponsorshipBeykent Universityen_US
dc.description.sponsorshipWe thank Beykent University providing the Laboratories and financial support for this study.en_US
dc.identifier.doi10.1016/j.jphotochem.2015.05.037
dc.identifier.endpage185en_US
dc.identifier.issn1010-6030
dc.identifier.scopus2-s2.0-84978026630en_US
dc.identifier.scopusqualityN/Aen_US
dc.identifier.startpage176en_US
dc.identifier.urihttps://doi.org/10.1016/j.jphotochem.2015.05.037
dc.identifier.urihttps://hdl.handle.net/20.500.12662/4210
dc.identifier.volume311en_US
dc.identifier.wosWOS:000361928500022en_US
dc.identifier.wosqualityQ2en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherElsevier Science Saen_US
dc.relation.ispartofJournal Of Photochemistry And Photobiology A-Chemistryen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.subjectTitania (TiO2)en_US
dc.subjectVisible-light-induceden_US
dc.subjectPhotodegradationen_US
dc.subjectCr/TiO2en_US
dc.subjectMn/TiO2en_US
dc.subjectFe/TiO2en_US
dc.subjectCo/TiO2en_US
dc.subjectNi/TiO2en_US
dc.subjectCu/TiO2en_US
dc.titleA comparative study for removal of different dyes over M/TiO2 (M = Cu, Ni, Co, Fe, Mn and Cr) photocatalysts under visible light irradiationen_US
dc.typeArticleen_US

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