Passivated n-p co-doping of niobium and nitrogen into self-organized TiO2 nanotube arrays for enhanced visible light photocatalytic performance

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	Passivated n-p co-doping of niobium and nitrogen into self-organized TiO2 nanotube arrays for enhanced visible light photocatalytic performance
	Z. C. Xu; W. Y. Yang; Q. Li; S. Gao; J. K. Shang
	2014
发表期刊	Applied Catalysis B-Environmental
ISSN	0926-3373
卷号	144 页码:343-352
摘要	Passivated n-p co-doping of niobium and nitrogen was successfully incorporated into self-organized TiO2 nanotube arrays by anodizing Ti-Nb alloys, followed with the heat treatment in a flow of ammonia gas. Nb was doped into TiO2 nanotube arrays during the anodization by substituting Ti4+ with Nb5+, while Nb was doped into TiO2 nanotube arrays during the heat treatment by substituting O2- with N3-. Since Nb in TiO2 enhanced the adsorption of NH3 molecules onto the nanotube arrays, Nb doping was found to promote the subsequent N doping into the anatase lattice. As predicted by first-principles band structure calculations, Nb/N co-doped titanium oxide nanotube arrays demonstrated a largely enhanced visible light response and visible light photocatalytic performance on the degradation of methylene blue, compared to TiO2 nanotube arrays or TiO2 nanotube arrays with either dopant. The passivated n-p co-doping approach may also be applied to other material systems and promise a wide range of technical applications. (C) 2013 Elsevier B.V. All rights reserved.
部门归属	[xu, zhengchao ; yang, weiyi ; li, qi ; gao, shian ; shang, jian ku] chinese acad sci, inst met res, shenyang natl lab mat sci, environm funct mat div, shenyang 110016, peoples r china. [shang, jian ku] univ illinois, dept mat sci & engn, urbana, il 61801 usa. ; li, q (reprint author), 72 wenhua rd, shenyang 110016, liaoning provin, peoples r china. ; qili@imr.ac.cn
关键词	Passivated N-p Co-doping Niobium Nitrogen Tio2 Nanotube Arrays Enhanced Visible Light Photocatalytic Performance Doped Titanium-dioxide Anatase Tio2 Thin-films Optical-properties Solar Light Oxide Nanoparticles Anodization Tio2-anatase Nanocrystals
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/72402
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. C. Xu,W. Y. Yang,Q. Li,et al. Passivated n-p co-doping of niobium and nitrogen into self-organized TiO2 nanotube arrays for enhanced visible light photocatalytic performance[J]. Applied Catalysis B-Environmental,2014,144:343-352.
APA	Z. C. Xu,W. Y. Yang,Q. Li,S. Gao,&J. K. Shang.(2014).Passivated n-p co-doping of niobium and nitrogen into self-organized TiO2 nanotube arrays for enhanced visible light photocatalytic performance.Applied Catalysis B-Environmental,144,343-352.
MLA	Z. C. Xu,et al."Passivated n-p co-doping of niobium and nitrogen into self-organized TiO2 nanotube arrays for enhanced visible light photocatalytic performance".Applied Catalysis B-Environmental 144(2014):343-352.