Photocatalytic H2 evolution over basic zincoxysulfide (ZnS1-x-0.5yOx(OH)(y)) under visible light irradiation

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	Photocatalytic H2 evolution over basic zincoxysulfide (ZnS1-x-0.5yOx(OH)(y)) under visible light irradiation
	Lv GX(吕功煊)
刊名	Applied Catalysis A: General
	2009
卷号	363 页码:180-187
关键词	Basic zincoxysulfide Solid solution Photocatalyst Visible light Hydrogen evolution
ISSN号	0926-860X
通讯作者	李越湘
中文摘要	A composite visible light photocatalyst was prepared through co-precipitation of Zn(NO3)2 in the mixed solution of aqueous Na2S and NaOH, and calcination in N2 atmosphere. The photocatalyst was characterized by thermogravimetric and differential thermal analysis (TG–DTA), X-ray diffraction (XRD), UV–vis diffusive reflectance spectroscopy (DRS), BET and electrochemistry measurements. Its activity wasevaluated byhydrogen production froman aqueous solution containingNa2SandNa2SO3 as hole scavengers under visible light (l 420 nm) irradiation. The photocatalyst is a mixture of basic zincoxysulfide (ZnS1 x 0.5yOx(OH)y) solid solution and ZnO or only the solid solution. ZnS1 x 0.5yOx(OH)y, which was visible light active, was a solid solution of ZnS with dissolved oxygen and hydroxide groups. Hydroxide groups are very important in the formation and stabilization of the solid solution. The precipitation and calcination temperatures as well as the precursor composition of ZnS1 x 0.5yOx(OH)y have great influence on the photocatalytic activity. With 1:1 calculated molar ratio of ZnS to ZnO (or Zn(OH)2), ZnS1 x 0.5yOx(OH)y photocatalyst prepared via co-precipitation at 373 K and calcination at 673 K underN2 atmosphere exhibits the highest activity. Its apparent quantumyield without noble metal cocatalyst is ca. 3.0% under visible light irradiation.
学科主题	物理化学
收录类别	SCI
资助信息	the National Nature Science Foundation of China (No.20763006);National Basic Research Program of China (2009CB220003);Specialized Research Fund for the Doctoral Program of Higher Education of China (20060403006); Program for Changjiang Scholars and Innovative Research Team in University (IRT0730)
语种	英语
公开日期	2012-09-21
内容类型	期刊论文
源URL	[http://210.77.64.217/handle/362003/553]
专题	兰州化学物理研究所_OSSO国家重点实验室兰州化学物理研究所_ERC国家工程研究中心
推荐引用方式 GB/T 7714	Lv GX. Photocatalytic H2 evolution over basic zincoxysulfide (ZnS1-x-0.5yOx(OH)(y)) under visible light irradiation[J]. Applied Catalysis A: General,2009,363:180-187.
APA	吕功煊.(2009).Photocatalytic H2 evolution over basic zincoxysulfide (ZnS1-x-0.5yOx(OH)(y)) under visible light irradiation.Applied Catalysis A: General,363,180-187.
MLA	吕功煊."Photocatalytic H2 evolution over basic zincoxysulfide (ZnS1-x-0.5yOx(OH)(y)) under visible light irradiation".Applied Catalysis A: General 363(2009):180-187.