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DC Field | Value | Language |
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dc.citation.endPage | 1934 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 1926 | - |
dc.citation.title | CHEMSUSCHEM | - |
dc.citation.volume | 5 | - |
dc.contributor.author | Parmar, Kanak Pal Singh | - |
dc.contributor.author | Kang, Hyun Joon | - |
dc.contributor.author | Bist, Amita | - |
dc.contributor.author | Dua, Piyush | - |
dc.contributor.author | Jang, Jum Suk | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.date.accessioned | 2023-12-22T04:39:37Z | - |
dc.date.available | 2023-12-22T04:39:37Z | - |
dc.date.created | 2015-07-27 | - |
dc.date.issued | 2012-10 | - |
dc.description.abstract | The visible-light-induced water oxidation ability of metal-ion-doped BiVO4 was investigated and of 12 metal ion dopants tested, only W and Mo dramatically enhanced the water photo-oxidation activity of bare BiVO4; Mo had the highest improvement by a factor of about six. Thus, BiVO4 and W- or Mo-doped (2 atom?%) BiVO4 photoanodes about 1 mu m thick were fabricated onto transparent conducting substrate by a metalorganic decomposition/spin-coating method. Under simulated one sun (air mass 1.5G, 100 mW?cm-2) and at 1.23 V versus a reversible hydrogen electrode, the highest photocurrent density (JPH) of about 2.38 mA?cm-2 was achieved for Mo doping followed by W doping (JPH approximate to 1.98 mA?cm-2), whereas undoped BiVO4 gave a JPH value of about 0.42 mA?cm-2. The photoelectrochemical water oxidation activity of W- and Mo-doped BiVO4 photoanodes corresponded to the incident photon to current conversion efficiency of about 35 and 40?% respectively. Electrochemical impedance spectroscopy and MottSchottky analysis indicated a positive flat band shift of about 30 mV, a carrier concentration 1.62 times higher, and a charge-transfer resistance reduced by 34-fold for W- or Mo-doped BiVO4 relative to undoped BiVO4. Electronic structure calculations revealed that both W and Mo were shallow donors and Mo doping generated superior conductivity to W doping. The photo-oxidation activity of water on BiVO4 photoanodes (undoped- |
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dc.identifier.bibliographicCitation | CHEMSUSCHEM, v.5, no.10, pp.1926 - 1934 | - |
dc.identifier.doi | 10.1002/cssc.201200254 | - |
dc.identifier.issn | 1864-5631 | - |
dc.identifier.scopusid | 2-s2.0-84867532626 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12816 | - |
dc.identifier.url | http://onlinelibrary.wiley.com/doi/10.1002/cssc.201200254/abstract | - |
dc.identifier.wosid | 000310074200009 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title.alternative | Photocatalytic and Photoelectrochemical Water Oxidation over Metal-Doped Monoclinic BiVO4 Photoanodes | - |
dc.title | Photocatalytic and Photoelectrochemical Water Oxidation over Metal-Doped Monoclinic BiVO4 Photoanodes | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | electrochemistry | - |
dc.subject.keywordAuthor | oxidation | - |
dc.subject.keywordAuthor | photochemistry | - |
dc.subject.keywordAuthor | water splitting | - |
dc.subject.keywordPlus | VISIBLE-LIGHT IRRADIATION | - |
dc.subject.keywordPlus | SCANNING ELECTROCHEMICAL MICROSCOPY | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | O-2 | - |
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