Roles of cocatalysts in semiconductor-based photocatalytic hydrogen production

	Roles of cocatalysts in semiconductor-based photocatalytic hydrogen production
	Yang, Jinhui 1,2; Yan, Hongjian 1; Zong, Xu 1; Wen, Fuyu 1,2; Liu, Meiying 1; Li, Can 1
刊名	philosophical transactions of the royal society a-mathematical physical and engineering sciences
	2013-08-13
卷号	371 期号:1996 页码:20110430
关键词	photocatalysis dual cocatalyst hydrogen production water splitting platinum palladium sulfide
通讯作者	李灿
产权排序	待补充
合作状况	英
英文摘要	a photocatalyst is defined as a functional composite material with three components: photo-harvester (e.g. semiconductor), reduction cocatalyst (e.g. for hydrogen evolution) and oxidation cocatalyst (e.g. for oxidation evolution from water). loading cocatalysts on semiconductors is proved to be an effective approach to promote the charge separation and transfer, suppress the charge recombination and enhance the photocatalytic activity. furthermore, the photocatalytic performance can be significantly improved by loading dual cocatalysts for reduction and oxidation, which could lower the activation energy barriers, respectively, for the two half reactions. a quantum efficiency (qe) as high as 93 per cent at 420nm for h-2 production has been achieved for pt-pds/cds, where pt and pds, respectively, act as reduction and oxidation cocatalysts and cds as a photo-harvester. the dual cocatalysts work synergistically and enhance the photocatalytic reaction rate, which is determined by the slower one (either reduction or oxidation). this work demonstrates that the cocatalysts, especially the dual cocatalysts for reduction and oxidation, are crucial and even absolutely necessary for achieving high qes in photocatalytic hydrogen production, as well as in photocatalytic water splitting.
学科主题	物理化学
WOS标题词	science & technology
类目[WOS]	multidisciplinary sciences
研究领域[WOS]	science & technology - other topics
关键词[WOS]	visible-light irradiation ; h-2 evolution ; oxygen evolution ; solid-solution ; water ; cds ; catalysts ; system ; mos2 ; photoluminescence
收录类别	SCI
资助信息	1，1
原文出处	20110430
语种	英语
WOS记录号	WOS:000321115700005
公开日期	2014-09-11
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/119285]
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, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang, Jinhui,Yan, Hongjian,Zong, Xu,et al. Roles of cocatalysts in semiconductor-based photocatalytic hydrogen production[J]. philosophical transactions of the royal society a-mathematical physical and engineering sciences,2013,371(1996):20110430.
APA	Yang, Jinhui,Yan, Hongjian,Zong, Xu,Wen, Fuyu,Liu, Meiying,&Li, Can.(2013).Roles of cocatalysts in semiconductor-based photocatalytic hydrogen production.philosophical transactions of the royal society a-mathematical physical and engineering sciences,371(1996),20110430.
MLA	Yang, Jinhui,et al."Roles of cocatalysts in semiconductor-based photocatalytic hydrogen production".philosophical transactions of the royal society a-mathematical physical and engineering sciences 371.1996(2013):20110430.