Preparation of phthalocyanine/TiO2 nanocomposites for photocatalytic removal of toxic Cr(VI) ions

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dc.authoridKOC KESIR, Melek/0000-0001-8905-2664
dc.authoridTatlidil Altin, Ilknur/0000-0002-9859-3611
dc.authoridDegirmencioglu, Ismail/0000-0002-7964-0427
dc.authoridBayrak, Riza/0000-0002-0398-7694
dc.contributor.authorBayrak, Riza
dc.contributor.authorAlbay, Cansu
dc.contributor.authorKoc Kesir, Melek
dc.contributor.authorAltin, Ilknur
dc.contributor.authorDegirmencioglu, Ismail
dc.contributor.authorSokmen, Munevver
dc.date.accessioned2025-03-23T19:38:16Z
dc.date.available2025-03-23T19:38:16Z
dc.date.issued2016
dc.departmentSinop Üniversitesi
dc.description.abstractIn this study, a group of novel metal free azomethine-bridged phenolic phthalocyanines (H2Pc) was synthesized. These derivatives are completely new and first time reported. Four derivatives at peripheral or non-peripheral substitution on macro cyclic ring were synthesized and characterized employing various spectroscopic methods. H2Pc derivatives (defined as H2Pc-1, H2Pc-2, H2Pc-3, H2Pc-4) were immobilized on TiO2 nanoparticles to obtain photoactive nanocomposites (H2Pc/TiO2, 1% of the mass of TiO2). H2Pc derivatives were used as photosensitizer to improve the near visible-light photocatalytic efficiency of TiO2 catalyst in wastewater treatment. Photocatalytic abilities nanocomposites were tested for photocatalytic reduction of chromium (VI) ions (10 mg/L) and compared with neat TiO2. A near UV light source (365 nm) was used for illumination in a batch reactor and Cr(VI) concentration was monitored during 150 min treatment period. It is clear that H2Pc sensitized photocatalyst is effective for the reduction of chromium ions. Removal percentages were between 83.70 and 99.75% indicating almost total reduction of toxic Cr(VI) ions. Neat TiO2 was able to reduce only 55.43% of initial Cr(VI) ions. All phthalocyanine containing TiO2 composites are significantly more effective and reduce more Cr(VI) ions than TiO2 itself. Photocatalytic action of the catalysts is decreased in the following order H2Pc-4/TiO2 > H2Pc-2/TiO2 > H2Pc-1/TiO2 > H2Pc-3/TiO2. (C) 2016 The Institution of Chemical Engineers. Published by Elsevier B.V. All rights reserved.
dc.description.sponsorshipTurkish Scientific Research Council (TUBITAK) [113Z308]
dc.description.sponsorshipThe authors gratefully appreciate the financial support from Turkish Scientific Research Council (TUBITAK, Project No: 113Z308). The authors declare that there is no conflict of interest.
dc.identifier.doi10.1016/j.psep.2016.03.023
dc.identifier.endpage302
dc.identifier.issn0957-5820
dc.identifier.issn1744-3598
dc.identifier.scopus2-s2.0-84964317131
dc.identifier.scopusqualityQ1
dc.identifier.startpage294
dc.identifier.urihttps://doi.org/10.1016/j.psep.2016.03.023
dc.identifier.urihttps://hdl.handle.net/11486/6110
dc.identifier.volume102
dc.identifier.wosWOS:000381238300030
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofProcess Safety and Environmental Protection
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250323
dc.subjectPhotocatalysis
dc.subjectAzomethine-bridged phenolic phthalocyanine
dc.subjectPhthalocyanine/TiO2 composites
dc.subjectDye sensitization
dc.subjectCr(VI) reduction
dc.subjectPhotocatalytic removal
dc.titlePreparation of phthalocyanine/TiO2 nanocomposites for photocatalytic removal of toxic Cr(VI) ions
dc.typeArticle

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