The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance

doi:10.1016/j.catcom.2017.09.018

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	The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance
	Cui ET(崔恩田)1 ; Wu YQ(吴玉琪); Wu YQ(吴玉琪)2 ; Zhang, Feng 1; Xu, Ning 3; Hou, Guihua 1; Yu, Guiyun 4; Ge, Chengyan 4; Meng, Qiangqiang 1
刊名	Catalysis Communications
	2018
卷号	103 页码:29-33
关键词	Photocatalysis Oxygen Vacancy Defect Level Band Mg4ta2o9-x Hydrogen Evolution
ISSN号	1566-7367
DOI	10.1016/j.catcom.2017.09.018
英文摘要	Extending the light absorption range of wide-band-gap semiconductor oxides is crucial to the effective solar hydrogen energy conversion. Here, we introduced surface oxygen vacancies into Mg₄Ta₂O₉ and constructed a narrow band-gap Mg₄Ta₂O_9-x photocatalyst by a simple low temperature reduction method. The as-synthesized Mg₄Ta₂O_9-x exhibits a significantly extended absorption edge in visible light range, which originates from the intermediate defect level band and electronic states created by introducing surface oxygen vacancy. With the same Pt loaded content (0.5 wt%), the Pt-loaded Mg₄Ta₂O₉, exhibits the excellent photocatalytic stability and higher hydrogen evolution activity (4.42 μmol.h^-1) than the Pt-loaded Mg₄Ta₂O₉ (0.14 [μmol.h^-1) under visible light irradiation.
学科主题	物理化学与绿色催化
资助项目	环境催化与氢能研究组
语种	英语
WOS记录号	WOS:000413887000007
资助机构	the National Natural Science Foundation of China (NSFC) (No. 11404278;1164707;21603182;21703196);Jiangsu Province Research Joint Research Project (BY2016065-32)
内容类型	期刊论文
源URL	[http://ir.licp.ac.cn/handle/362003/22748]
专题	兰州化学物理研究所_OSSO国家重点实验室
通讯作者	Wu YQ(吴玉琪)
作者单位	1.Yancheng Inst Technol, Key Lab Adv Technol Environm Protect Jiangsu Prov, Yancheng 224051, Peoples R China 2.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Gansu, Peoples R China 3.Yancheng Inst Technol, Phys Dept, Yancheng 224051, Peoples R China 4.Yancheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China
推荐引用方式 GB/T 7714	Cui ET,Wu YQ,Wu YQ,et al. The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance[J]. Catalysis Communications,2018,103:29-33.
APA	Cui ET.,吴玉琪.,Wu YQ.,Zhang, Feng.,Xu, Ning.,...&Meng, Qiangqiang.(2018).The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance.Catalysis Communications,103,29-33.
MLA	Cui ET,et al."The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance".Catalysis Communications 103(2018):29-33.