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; Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response
	Y. F. Shen; T. Y. Xiong; T. F. Li; K. Yang
	2008 ; 2008
发表期刊	Applied Catalysis B-Environmental ; Applied Catalysis B-Environmental
ISSN	0926-3373 ; 0926-3373
卷号	83 期号:3-4 页码:177-185
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.; 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.
部门归属	[shen, yanfang; xiong, tianying; li, tiefan; yang, ke] chinese acad sci, inst met res, shenyang 110016, peoples r china. [shen, yanfang] chinese acad sci, grad sch, beijing 100086, peoples r china.;xiong, ty (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;tyxiong@imr.ac.cn ; [shen, yanfang; xiong, tianying; li, tiefan; yang, ke] chinese acad sci, inst met res, shenyang 110016, peoples r china. [shen, yanfang] chinese acad sci, grad sch, beijing 100086, peoples r china.;xiong, ty (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china;tyxiong@imr.ac.cn
关键词	Tio2 Tio2 Co-doped Co-doped Two-step Method Two-step Method Cod Cod Photocatalytic Activity Photocatalytic Activity Titanium-dioxide Titanium-dioxide Photoelectrochemical Photoelectrochemical Properties Properties Heterogeneous Photocatalysis Heterogeneous Photocatalysis Raman-spectra Raman-spectra Metal-ion Metal-ion Vapor Vapor Nanoparticles Nanoparticles Oxidation Oxidation Anatase Anatase
URL	查看原文 ; 查看原文
WOS记录号	WOS:000259687900002 ; WOS:000259687900002
引用统计	被引频次：99[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33068
专题	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, Tungsten and nitrogen co-doped TiO2 nano-powders with strong visible light response[J]. Applied Catalysis B-Environmental, Applied Catalysis B-Environmental,2008, 2008,83, 83(3-4):177-185, 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.