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

	The roles of surface oxygen vacancy over Mg4Ta2O9-x photocatalyst in enhancing visible-light photocatalytic hydrogen evolution performance
Department	OSSO国家重点实验室
	Cui ET(崔恩田)1 ; Meng, Qiangqiang 1; Ge, Chengyan 2; Yu, Guiyun 2; Hou, Guihua 1; Xu, Ning 3; Zhang, Feng 1; Wu YQ(吴玉琪)4 ; Wu YQ(吴玉琪)
	2018
Source Publication	Catalysis Communications
ISSN	1566-7367
Volume	103 Pages:29-33
Abstract	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.
Keyword	Photocatalysis Oxygen Vacancy Defect Level Band Mg4ta2o9-x Hydrogen Evolution
Subject Area	物理化学与绿色催化
DOI	10.1016/j.catcom.2017.09.018
Funding Organization	the National Natural Science Foundation of China (NSFC) (No. 11404278;1164707;21603182;21703196);Jiangsu Province Research Joint Research Project (BY2016065-32)
Indexed By	SCI
Language	英语
Funding Project	环境催化与氢能研究组
compositor	第四作者单位
Citation statistics	Cited Times:9[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.licp.cn/handle/362003/22748
Collection	羰基合成与选择氧化国家重点实验室（OSSO）
Corresponding Author	Wu YQ(吴玉琪)
Affiliation	1.Yancheng Inst Technol, Key Lab Adv Technol Environm Protect Jiangsu Prov, Yancheng 224051, Peoples R China 2.Yancheng Inst Technol, Sch Chem & Chem Engn, Yancheng 224051, Peoples R China 3.Yancheng Inst Technol, Phys Dept, Yancheng 224051, Peoples R China 4.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Lanzhou 730000, Gansu, Peoples R China
Recommended Citation GB/T 7714	Cui ET,Meng, Qiangqiang,Ge, Chengyan,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.,Meng, Qiangqiang.,Ge, Chengyan.,Yu, Guiyun.,Hou, Guihua.,...&吴玉琪.(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.

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