Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts

	Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts
	Gao, Yuying 1,2,4; Wang, Shengyang 1,2,4; Miao, Shu 1,2; Liu, Taifeng 1,2; Mu, Linchao 1,2,4; Li, Rengui 1,2; Fan, Fengtao 1,2,3; Li, Can 1,2,3
刊名	JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
	2017-08-30
卷号	139 期号:34 页码:11771-11778
英文摘要	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/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.).
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Multidisciplinary
研究领域[WOS]	Chemistry
关键词[WOS]	VISIBLE-LIGHT PHOTOCATALYST ; GOLD NANOPARTICLES ; CHARGE SEPARATION ; ELECTRON-TRANSFER ; INDUCED DISSOCIATION ; AQUEOUS SUSPENSIONS ; TITANIUM-DIOXIDE ; CHEMICAL ENERGY ; TIO2 PARTICLES ; GREEN LIGHT
收录类别	SCI
语种	英语
WOS记录号	WOS:000409286000029
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/149917]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.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
推荐引用方式 GB/T 7714	Gao, Yuying,Wang, Shengyang,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	Gao, Yuying.,Wang, Shengyang.,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	Gao, Yuying,et al."Positioning the Water Oxidation Reaction Sites in Plasmonic Photocatalysts".JOURNAL OF THE AMERICAN CHEMICAL SOCIETY 139.34(2017):11771-11778.