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Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts
Wang, Shengyang1,2,4; Gao, Yuying1,2,4; Miao, Shu1,2; Liu, Taifeng1,2; Mu, Linchao1,2,4; Li, Rengui1,2; Fan, Fengtao1,2,3; Li, Can1,2,3
Source PublicationJOURNAL OF THE AMERICAN CHEMICAL SOCIETY
2017-08-30
DOI10.1021/jacs.7b04470
Volume139Issue:34Pages:11771-11778
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
WOS SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordVISIBLE-LIGHT PHOTOCATALYST ; GOLD NANOPARTICLES ; CHARGE SEPARATION ; ELECTRON-TRANSFER ; INDUCED DISSOCIATION ; AQUEOUS SUSPENSIONS ; TITANIUM-DIOXIDE ; CHEMICAL ENERGY ; TIO2 PARTICLES ; GREEN LIGHT
AbstractPlasmonic 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/TiO2 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/SrTiO3, Au/BaTiO3, etc.).
Language英语
WOS IDWOS:000409286000029
Citation statistics
Cited Times:57[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149917
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Zhongshan Rd 457, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Zhongshan Rd 457, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat iChEM, Zhongshan Rd 457, Dalian 116023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Wang, Shengyang,Gao, Yuying,Miao, Shu,et al. Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts[J]. JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,2017,139(34):11771-11778.
APA Wang, Shengyang.,Gao, Yuying.,Miao, Shu.,Liu, Taifeng.,Mu, Linchao.,...&Li, Can.(2017).Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts.JOURNAL OF THE AMERICAN CHEMICAL SOCIETY,139(34),11771-11778.
MLA Wang, Shengyang,et al."Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.34(2017):11771-11778.
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