Application of Fe-doped TiO2 specimens for the solar photocatalytic degradation of humic acid

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dc.authorid0000-0001-9343-3697
dc.authorscopusid56148105000
dc.authorscopusid55586242400
dc.authorscopusid55655212000
dc.authorscopusid54911752000
dc.authorscopusid54911900700
dc.authorscopusid6603153611
dc.authorscopusid15030861000
dc.contributor.authorBirben, Nazmiye Cemre
dc.contributor.authorUyguner-Demirel, Ceyda Senem
dc.contributor.authorSen Kavurmaci, Sibel
dc.contributor.authorGürkan, Yelda Yalçın
dc.contributor.authorTürkten, Nazlı
dc.contributor.authorÇınar, Zekiye
dc.contributor.authorBekbolet, Miray
dc.date.accessioned2022-05-11T14:30:56Z
dc.date.available2022-05-11T14:30:56Z
dc.date.issued2017
dc.departmentFakülteler, Fen Edebiyat Fakültesi, Kimya Bölümü
dc.description.abstractThis study aimed to assess solar photocatalytic activity of Fe-doped TiO2 specimens for the degradation of natural organic matter (NOM) represented by a model humic acid (HA). Fe-doped TiO2 specimens (P-25 and UV-100) were prepared by a wet impregnation method. Humic acid (molecular size < 100 kDa) was characterized by UV-vis and fluorescence spectroscopic parameters and dissolved organic carbon (DOC) content both prior to and following solar photocatalysis. Molecular size fractionation data revealed a shift to lower molecular size fractions i.e.: 30 kDa, 10 kDa and 3 kDa being more pronounced in case of Fe-doped UV-100 in comparison to Fe-doped P-25. Excitation-emission matrix (EEM) fluorescence features of indicated humic molecular size fractions did not illustrate any significant difference related to the formation of new fluorophoric regions but displayed the shift from humic-like fluorophores to fulvic-like fluorophores even in 3 kDa fraction indicating that humic acid followed a photocatalyst type independent pathway via solar photocatalysis. Slower DOC removal rates were attained for Fe-doped TiO2 specimens with respect to bare specimens indicating the importance of substrate properties rather than the inefficiency of visible light activation by metal doping of photocatalyst. (C) 2016 Elsevier B.V. All rights reserved.
dc.description.sponsorshipResearch Fund of Bogazici UniversityBogazici University [6729, 6750]
dc.description.sponsorshipThe financial support by Research Fund of Bogazici University (Projects No: 6729 and 6750) is gratefully acknowledged.
dc.identifier.doi10.1016/j.cattod.2016.06.020
dc.identifier.endpage84
dc.identifier.issn0920-5861
dc.identifier.issn1873-4308
dc.identifier.scopus2-s2.0-84997288056
dc.identifier.scopusqualityQ1
dc.identifier.startpage78
dc.identifier.urihttps://doi.org/10.1016/j.cattod.2016.06.020
dc.identifier.urihttps://hdl.handle.net/20.500.11776/7243
dc.identifier.volume281
dc.identifier.wosWOS:000390515800011
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.institutionauthorGürkan, Yelda Yalçın
dc.language.isoen
dc.publisherElsevier Science Bv
dc.relation.ispartofCatalysis Today
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectEEM
dc.subjectFe-doped TiO2
dc.subjectHumic acid
dc.subjectMolecular size distribution
dc.subjectSolar photocatalytic degradation
dc.subjectVisible-Light
dc.subjectTitanium-Dioxide
dc.subjectOrganic-Matter
dc.subjectSpectroscopy
dc.subjectAromaticity
dc.subjectMechanisms
dc.subjectOxidation
dc.subjectDynamics
dc.subjectSize
dc.titleApplication of Fe-doped TiO2 specimens for the solar photocatalytic degradation of humic acid
dc.typeArticle

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