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题名: Photocatalytic H-2 Evolution on CdS Loaded with WS2 as Cocatalyst under Visible Light Irradiation
作者: Zong, Xu1;  Han, Jingfeng1;  Ma, Guijun1;  Yan, Hongjian1;  Wu, Guopeng1;  Li, Can1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2011-06-23
DOI: 10.1021/jp2006777
卷: 115, 期:24, 页:12202-12208
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: WS2/CdS photocatalysts with different amounts of WS2 cocatalyst are prepared by loading WS2 on CdS with an impregnation sulfidation approach. The transformation process of the tungsten species loaded on CdS together with the junctions formed between WS2 and CdS are clearly demonstrated with X-ray photoelectron spectroscopy and transmission electron microscopy. Photocatalytic H-2 production on WS2/CdS catalysts under visible light (lambda > 420 nm) shows that WS2 cocatalyst plays a crucial role in H-2 production. Under optimum conditions, the rate of H-2 evolution can be increased by up to 28 times when CdS was loaded with only 1.0 wt % WS2, and WS2 demonstrates a catalytic performance comparable or even superior to those of noble metals. Photocatalytic reaction results and electrochemical measurements indicate that the significantly enhanced H-2 evolution of WS2/CdS catalyst mainly owns to the junctions formed between WS2 and CdS and the excellent performance of WS2 as a cocatalyst in catalyzing H-2 evolution.
关键词[WOS]: PHOTOCHEMICAL HYDROGEN-PRODUCTION ;  SOLID-SOLUTION ;  CADMIUM-SULFIDE ;  TRANSITION-METAL ;  ARTIFICIAL PHOTOSYNTHESIS ;  AQUEOUS-SOLUTIONS ;  WATER REDUCTION ;  CATALYSTS ;  HYDRODESULFURIZATION ;  OXYGEN
语种: 英语
WOS记录号: WOS:000291709600041
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/142532
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Zong, Xu,Han, Jingfeng,Ma, Guijun,et al. Photocatalytic H-2 Evolution on CdS Loaded with WS2 as Cocatalyst under Visible Light Irradiation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2011,115(24):12202-12208.
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