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박영빈

Park, Young-Bin
Functional Intelligent Materials Lab.
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dc.citation.number 2 -
dc.citation.startPage 112344 -
dc.citation.title JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING -
dc.citation.volume 12 -
dc.contributor.author Saikia, Sayanika -
dc.contributor.author Saikia, Lakshi -
dc.contributor.author Lee, Seonghwan -
dc.contributor.author Park, Young -Bin -
dc.contributor.author Saha, Rafikul Ali -
dc.contributor.author Khanam, Salma A. -
dc.contributor.author Zaki, Magdi E. A. -
dc.contributor.author Bania, Kusum K. -
dc.date.accessioned 2024-05-28T16:05:09Z -
dc.date.available 2024-05-28T16:05:09Z -
dc.date.created 2024-05-27 -
dc.date.issued 2024-04 -
dc.description.abstract A redox switchable photocatalyst consisting of mixed valent copper (Cu I/II ) sulfide (Cu x S) and cobalt (Co II/III ) oxide (Co y O z ) designated as Cu x S-Co y O z (x=1,2, y=1,3 and z=1,4) was synthesized to execute the Z -scheme photocatalysis process for photoreduction of chromium(VI), and photodegradation of Methyl Violet (MV) dye. The synthesized photocatalyst with a band gap of 3.3 eV was found to be highly effective to reduce 99.62% Cr (VI) and 99.32% of MV dye under UV -light irradiation. The possibility of switching the oxidation state in Cu and Co centre favored the band edge electron transfer on light irradiation and supported the Z -scheme electron transport chain. The photocatalytic reduction and degradation process was dependent on various reaction conditions like catalyst amount, pH of the reaction mixture, irradiation time. The reduction of Cr(VI) occurred with high efficacy at pH=2 while the MV dye degradation proceeded at high pH=10. The catalyst could reduce maximum concentration of Cr(VI) upto 250 ppm and MV dye upto 10 -3 M. The mechanism of the photocatalytic processes were well studied by different spectroscopic and electrochemical analysis. The photocatalytic activity of synthesized Cu x S-Co y O z catalyst was compared with five other transition metal sulfides M -S (MnS, FeS, Co a S b , NiS and ZnS, where a=3, 4; b=3, 4) combined with cobalt oxide and it was found that Cu x S-Co y O z exhibited the highest activity in both the photocatalytic process. -
dc.identifier.bibliographicCitation JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, v.12, no.2, pp.112344 -
dc.identifier.doi 10.1016/j.jece.2024.112344 -
dc.identifier.issn 2213-2929 -
dc.identifier.scopusid 2-s2.0-85187207838 -
dc.identifier.uri https://scholarworks.unist.ac.kr/handle/201301/82799 -
dc.identifier.wosid 001223977200001 -
dc.language 영어 -
dc.publisher ELSEVIER SCI LTD -
dc.title Cu (I/II)-Co (II/III) photocatalyst with intrinsic electron transport centre for photoreduction of chromium(VI) and photodegradation of methyl violet -
dc.type Article -
dc.description.isOpenAccess FALSE -
dc.relation.journalWebOfScienceCategory Engineering, Environmental; Engineering, Chemical -
dc.relation.journalResearchArea Engineering -
dc.type.docType Article -
dc.description.journalRegisteredClass scie -
dc.description.journalRegisteredClass scopus -
dc.subject.keywordAuthor Copper sulfide -
dc.subject.keywordAuthor Cobalt oxide -
dc.subject.keywordAuthor Chromium -
dc.subject.keywordAuthor Methyl violet -
dc.subject.keywordAuthor Z -scheme photocatalysis -
dc.subject.keywordPlus DYE DEGRADATION -
dc.subject.keywordPlus CR(VI) -
dc.subject.keywordPlus WATER -
dc.subject.keywordPlus NANOPARTICLES -
dc.subject.keywordPlus REDUCTION -
dc.subject.keywordPlus REMOVAL -
dc.subject.keywordPlus NANOCOMPOSITES -
dc.subject.keywordPlus PERFORMANCE -
dc.subject.keywordPlus COPPER SULFIDE -
dc.subject.keywordPlus ORGANIC POLLUTANTS -

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