Enhanced Photocatalytic Activity of Electrospun beta-Ga2O3 Nanofibers via In-Situ Si Doping Using Tetraethyl Orthosilicate

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dc.contributor.authorYoo, Tae Heeko
dc.contributor.authorRyou, Heejoongko
dc.contributor.authorLee, In Gyeko
dc.contributor.authorCho, Byung-Jinko
dc.contributor.authorHwang, Wan Sikko
dc.date.accessioned2019-12-13T07:21:33Z-
dc.date.available2019-12-13T07:21:33Z-
dc.date.created2019-12-02-
dc.date.created2019-12-02-
dc.date.created2019-12-02-
dc.date.created2019-12-02-
dc.date.issued2019-12-
dc.identifier.citationCATALYSTS, v.9, no.12-
dc.identifier.issn2073-4344-
dc.identifier.urihttp://hdl.handle.net/10203/268857-
dc.description.abstractβ-Ga2O3 has attracted considerable attention as an alternative photocatalyst to replace conventional TiO2 under ultraviolet-C irradiation due to its high reduction and oxidation potential. In this study, to enhance the photocatalytic activity of β-Ga2O3, nanofibers are formed via the electrospinning method, and Si atoms are subsequently doped. As the Si concentration in the β-Ga2O3 nanofiber increases, the optical bandgap of the β-Ga2O3 nanofibers continuously decreases from 4.5 eV (intrinsic) to 4.0 eV for the Si-doped (2.4 at. %) β-Ga2O3 nanofibers, and accordingly, the photocatalytic activity of the β-Ga2O3 nanofibers is enhanced. This higher photocatalytic performance with Si doping is attributed to the increased doping-induced carriers in the conduction band edges. This differs from the traditional mechanism in which the doping-induced defect sites in the bandgap enhance separation and inhibit the recombination of photon-generated carriers.-
dc.languageEnglish-
dc.publisherMDPI-
dc.titleEnhanced Photocatalytic Activity of Electrospun beta-Ga2O3 Nanofibers via In-Situ Si Doping Using Tetraethyl Orthosilicate-
dc.typeArticle-
dc.identifier.wosid000507336600034-
dc.identifier.scopusid2-s2.0-85075923050-
dc.type.rimsART-
dc.citation.volume9-
dc.citation.issue12-
dc.citation.publicationnameCATALYSTS-
dc.identifier.doi10.3390/catal9121005-
dc.contributor.localauthorCho, Byung-Jin-
dc.contributor.nonIdAuthorYoo, Tae Hee-
dc.contributor.nonIdAuthorRyou, Heejoong-
dc.contributor.nonIdAuthorLee, In Gye-
dc.contributor.nonIdAuthorHwang, Wan Sik-
dc.description.isOpenAccessY-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorgallium oxide-
dc.subject.keywordAuthorsilicon doping-
dc.subject.keywordAuthorphotocatalyst-
dc.subject.keywordAuthormethylene blue-
dc.subject.keywordPlusMETHYLENE-BLUE-
dc.subject.keywordPlusTIO2 NANOPARTICLES-
dc.subject.keywordPlusSURFACE-AREA-
dc.subject.keywordPlusTHIN-FILMS-
dc.subject.keywordPlusZNO-
dc.subject.keywordPlusPHOTODEGRADATION-
dc.subject.keywordPlusPERFORMANCE-
dc.subject.keywordPlusLUMINESCENCE-
dc.subject.keywordPlusPOLLUTANTS-
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