Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts.
Plasmonic photocatalysis, stemming from the effective light absorbance and confinement of surface plasmons, provides a pathway to enhance solar energy conversion. Although the plasmonic hot electrons in water reduction have been extensively studied, exactly how the plasmonic hot holes participate in...
| Publicado en: | Journal of the American Chemical Society Vol. 139; no. 34; pp. 11771 - 11779 |
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| Autores principales: | , , , , , , , |
| Formato: | Artículo |
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American Chemical Society
8/30/2017
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| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=125088031&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 125088031 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 8/30/2017 vid: 139 iid: 34 pid: 997 pub: American Chemical Society artinfo: ui: 125088031 10.1021/jacs.7b04470 ppf: 11771 ppct: 8 formats: tig: atl: Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts. aug: au: Shengyang Wang Yuying Gao Shu Miao Taifeng Liu Linchao Mu Rengui Li Fengtao Fan Can Li affil: State Key Laboratory of Catalysis, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China Dalian National Laboratory for Clean Energy, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China University of Chinese Academy of Sciences, Beijing 100049, China Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Zhongshan Road 457, Dalian 116023, China su: Oxidation of water Plasmonics Photocatalysts Density functional theory Hole mobility sug: subj: Oxidation of water Plasmonics Photocatalysts Density functional theory Hole mobility ab: Plasmonic photocatalysis, stemming from the effective light absorbance and confinement of surface plasmons, provides a pathway to enhance solar energy conversion. Although the plasmonic hot electrons in water reduction have been extensively studied, exactly how the plasmonic hot holes participate in the water splitting reaction has not yet been well understood. In particular, where the plasmonic hot holes participate in water oxidation is still illusive. Herein, taking Au/TiO as a plasmonic photocatalyst prototype, we investigated the plasmonic hot holes involved in water oxidation. The reaction sites are positioned by photodeposition together with element mapping by electron microscopy, while the distribution of holes is probed by surface photovoltage imaging with Kelvin probe force microscopy. We demonstrated that the plasmonic holes are mainly concentrated near the gold-semiconductor interface, which is further identified as the reaction site for plasmonic water oxidation. Density functional theory also corroborates these findings by revealing the promotion role of interfacial structure (Ti-O-Au) for oxygen evolution. Furthermore, the interfacial effect on plasmonic water oxidation is validated by other Au-semiconductor photocatalytic systems (Au/SrTiO, Au/BaTiO, etc.). pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2017 holdings: @attributes: islocal: N |
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