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Cited 653 time in webofscience Cited 684 time in scopus
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dc.contributor.authorKim, J-
dc.contributor.authorLee, CW-
dc.contributor.authorChoi, W-
dc.date.accessioned2016-04-01T02:33:17Z-
dc.date.available2016-04-01T02:33:17Z-
dc.date.created2010-12-06-
dc.date.issued2010-09-01-
dc.identifier.issn0013-936X-
dc.identifier.other2010-OAK-0000022347-
dc.identifier.urihttps://oasis.postech.ac.kr/handle/2014.oak/25345-
dc.description.abstractThis study aims to understand the visible light photocatalytic activities of platinized WO3(Pt/WO3) on the degradation of aquatic pollutants and the role of main photooxidants. The presence of Pt on WO3 is known to facilitate the multielectron reduction of O-2, which enables O-2 to serve as an electron acceptor despite the insufficient reduction potential of the conduction band electrons (in WO3) for the one-electron reduction of O-2. The concurrent oxidative reactions occurring on WO3 were markedly enhanced in the presence of Pt and accompanied the production of OH radicals under visible light, which was confirmed by both a fluorescence method (using a chemical trap) and a spin trap method. The generation of OH radicals mainly comes from the reductive decomposition of H2O2 that is produced in situ from the reduction of O-2 on Pt/WO3. The rate of in situ production of H2O2 under visible light was significantly faster with Pt/WO3 than WO3. Six substrates that were tested for the visible light (lambda > 420 nm) induced degradation on Pt/WO3 included dichloroacetate (DCA), 4-chlorophenol (4-CP), tetramethylammonium (TMA), arsenite (As(111)), methylene blue (MB), and acid orange 7 (A07). The degradation (or conversion) of all six substrates was successfully achieved with Pt/WO3 and the role of OH radicals in Pt/WO3 photocatalysis seemed to be different depending on the kind of substrate. In the presence of tert-butyl alcohol (TBA: OH radical scavenger), the photocatalytic degradation was markedly reduced for 4-CP or completely inhibited for DCA and TMA whereas that of As(III), MB, and A07 was little affected. Pt/WO3 photocatalyst that oxidizes various substrates under visible light with a sufficient photostability can be applied for solar water treatment.-
dc.description.statementofresponsibilityX-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.relation.isPartOfENVIRONMENTAL SCIENCE & TECHNOLOGY-
dc.subjectTIO2 PHOTOCATALYSTS-
dc.subjectTUNGSTEN-OXIDE-
dc.subjectDRIVEN PHOTOCATALYSTS-
dc.subjectELECTRON-ACCEPTORS-
dc.subjectHYDROGEN-PEROXIDE-
dc.subjectORGANIC-COMPOUNDS-
dc.subjectOXIDATION-
dc.subjectDECOMPOSITION-
dc.subjectIRRADIATION-
dc.subjectSUPEROXIDE-
dc.titlePlatinized WO3 as an Environmental Photocatalyst that Generates OH Radicals under Visible Light-
dc.typeArticle-
dc.contributor.college환경공학부-
dc.identifier.doi10.1021/ES101981R-
dc.author.googleKim, J-
dc.author.googleLee, CW-
dc.author.googleChoi, W-
dc.relation.volume44-
dc.relation.issue17-
dc.relation.startpage6849-
dc.relation.lastpage6854-
dc.contributor.id10105056-
dc.relation.journalENVIRONMENTAL SCIENCE & TECHNOLOGY-
dc.relation.indexSCI급, SCOPUS 등재논문-
dc.relation.sciSCI-
dc.collections.nameJournal Papers-
dc.type.rimsART-
dc.identifier.bibliographicCitationENVIRONMENTAL SCIENCE & TECHNOLOGY, v.44, no.17, pp.6849 - 6854-
dc.identifier.wosid000281225800049-
dc.date.tcdate2019-02-01-
dc.citation.endPage6854-
dc.citation.number17-
dc.citation.startPage6849-
dc.citation.titleENVIRONMENTAL SCIENCE & TECHNOLOGY-
dc.citation.volume44-
dc.contributor.affiliatedAuthorChoi, W-
dc.identifier.scopusid2-s2.0-77956149941-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.wostc381-
dc.description.scptc346*
dc.date.scptcdate2018-05-121*
dc.type.docTypeArticle-
dc.subject.keywordPlusTIO2 PHOTOCATALYSTS-
dc.subject.keywordPlusTUNGSTEN-OXIDE-
dc.subject.keywordPlusDRIVEN PHOTOCATALYSTS-
dc.subject.keywordPlusELECTRON-ACCEPTORS-
dc.subject.keywordPlusHYDROGEN-PEROXIDE-
dc.subject.keywordPlusORGANIC-COMPOUNDS-
dc.subject.keywordPlusOXIDATION-
dc.subject.keywordPlusDECOMPOSITION-
dc.subject.keywordPlusIRRADIATION-
dc.subject.keywordPlusSUPEROXIDE-
dc.relation.journalWebOfScienceCategoryEngineering, Environmental-
dc.relation.journalWebOfScienceCategoryEnvironmental Sciences-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalResearchAreaEngineering-
dc.relation.journalResearchAreaEnvironmental Sciences & Ecology-

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최원용CHOI, WONYONG
Div of Environmental Science & Enginrg
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