DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kong, Hyung Jun | ko |
dc.contributor.author | Kim, Keon-Han | ko |
dc.contributor.author | Kim, Sang Jun | ko |
dc.contributor.author | Lee, Heebin | ko |
dc.contributor.author | Kang, Jeung Ku | ko |
dc.date.accessioned | 2019-12-31T01:20:07Z | - |
dc.date.available | 2019-12-31T01:20:07Z | - |
dc.date.created | 2019-12-30 | - |
dc.date.created | 2019-12-30 | - |
dc.date.issued | 2019-12 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.46, pp.26279 - 26284 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/270799 | - |
dc.description.abstract | Monoclinic scheelite BiVO4 (BVO-M) based materials are of great interest as photocatalysts for water oxidation essential to produce value-added chemical fuels, but their slow charge transfer and low activity are yet to be resolved. As a solution to overcome this challenge, we report Z-scheme photocatalyst fabricated by integrating the dual phase structure of monoclinic scheelite and tetragonal zircon-type BiVO4 (BVO-T) moieties with graphitic carbon nitride (g-C3N4) having pi-conjugated two dimensional layers suited to visible light-induced charge transfer. Moreover, V K-edge and Bi L3-edge X-ray absorption near-edge structure (XANES) and Fourier transformed extended X-ray absorption fine structure (EXAFS) spectra demonstrate that the tetragonal zircon-type BiVO4 structures in a Z-scheme catalyst form a bridge between BVO-M and g-C3N4 structures so that it acts as an electron mediator to accelerate charge transfer, in agreement with the zeta-potential analysis and the band structure revealed by UV-vis spectroscopy and ultraviolet photoelectron spectroscopy analyses. Furthermore, a Z-scheme photocatalyst is exhibited to show a 3-fold longer charge carrier lifetime than BVO-M, thereby enabling the greater than three-fold enhancement in photocatalytic water oxidation activity. Additionally, isotope O-18-labelling experiments reveal that evolved oxygen molecules result from water through photocatalytic water oxidation. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Unveiling the role of tetragonal BiVO4 as a mediator for dual phase BiVO4/g-C3N4 composite photocatalysts enabling highly efficient water oxidation via Z-scheme charge transfer | - |
dc.type | Article | - |
dc.identifier.wosid | 000501213600010 | - |
dc.identifier.scopusid | 2-s2.0-85075811383 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 46 | - |
dc.citation.beginningpage | 26279 | - |
dc.citation.endingpage | 26284 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/c9ta10704e | - |
dc.contributor.localauthor | Kang, Jeung Ku | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | EVOLUTION | - |
dc.subject.keywordPlus | ER3+ | - |
dc.subject.keywordPlus | PHOTOANODES | - |
dc.subject.keywordPlus | SURFACE | - |
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