Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response

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	Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response
	Y. F. Shen ; T. Y. Xiong ; T. F. Li ; K. Yang
刊名	Applied Catalysis B-Environmental
	2008
卷号	83 期号:3-4 页码:177-185
关键词	TiO2 co-doped two-step method COD photocatalytic activity titanium-dioxide photoelectrochemical properties heterogeneous photocatalysis raman-spectra metal-ion vapor nanoparticles oxidation anatase
ISSN号	0926-3373
中文摘要	A two-step method, combining with sol-gel and mechanical alloying (MA) method, was used to fabricate the tungsten and nitrogen co-doped TiO2 nano-powders ((W, N) co-doped TiO2 NPs). The (W, N) co-doped TiO2 NPs showed strong absorbance in visible range, as long as 650 nm. Enhanced photocatalytic activities under visible light irradiation were also observed from the results of photodegradation experiments and chemical oxygen demand (COD) analysis. Physical, chemical, and optical properties of the samples were investigated. Possible reasons for the enhanced photocatalytic activities were analyzed based on the experimental results. Oxygen vacancies detected by electron spin response (ESR) spectra, acting as trapping agencies for electrons (e(-)) to produce active oxygen species (O-center dot(2-)), were proved to be the main cause for the improved photocatalytic performances. (c) 2008 Published by Elsevier B.V.
原文出处	://WOS:000259687900002
公开日期	2012-04-13
内容类型	期刊论文
源URL	[http://210.72.142.130/handle/321006/33068]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. F. Shen,T. Y. Xiong,T. F. Li,et al. Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response[J]. Applied Catalysis B-Environmental,2008,83(3-4):177-185.
APA	Y. F. Shen,T. Y. Xiong,T. F. Li,&K. Yang.(2008).Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response.Applied Catalysis B-Environmental,83(3-4),177-185.
MLA	Y. F. Shen,et al."Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response".Applied Catalysis B-Environmental 83.3-4(2008):177-185.