Non-uniform doping outperforms uniform doping for enhancing the photocatalytic efficiency of Au-doped TiO2 nanotubes in organic dye degradation

doi:10.1016/j.ceramint.2017.04.050

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	Non-uniform doping outperforms uniform doping for enhancing the photocatalytic efficiency of Au-doped TiO2 nanotubes in organic dye degradation
	Zhang, Yuyuan 1; Hu, Huawen 1; Chang, Menglei 1; Chen, Dongchu 1; Zhang, Min 1; Wu, Liangpeng 2; Li, Xinjun 2
刊名	CERAMICS INTERNATIONAL
	2017-08-15
卷号	43 期号:12 页码:9053-9059
关键词	Non-uniform Doping Uniform Doping Au Element Tio2 Photocatalyst Liquid Phase Deposition Photocatalytic Degradation
DOI	10.1016/j.ceramint.2017.04.050
文献子类	Article
英文摘要	Uniform doping is usually recognized as an efficient method for enhancing photocatalysis of TiO2, while non-uniform doping is generally supposed to be inefficient because of the inhomogeneous dispersion of dopants. However, in this study, we present the first example of non-uniform doping (with Au)-better enhanced photocatalysis of TiO2 nanotubes, as compared to uniform doping, in terms of the photocatalytic organic dye degradation. The extent to which the non-uniform doping (achieved by liquid phase deposition (LPD)) can enhance photocatalysis is evaluated, along with a comparison with uniform doping. There exists an additional positive effect in the non-uniform doping system, that is, as generated interfaces between pure phase TiO2 and Au-doped TiO2, in contrast to the uniform doping system leading to a positive "platinum island" effect. Such double beneficial effects contribute to the highest performance in the photocatalytic organic dye degradation for the Au-non-uniformly doped TiO2 nanotubes as compared to other samples involved in this study. Both the "platinum island" and interfacial separation effects are helpful to isolate the photo-generated electrons and holes, resulting in enhanced photocatalytic activities.
WOS关键词	PHOTO-ASSISTED DEPOSITION ; VISIBLE-LIGHT ; ANATASE TIO2 ; FILMS ; NANOPARTICLES ; FABRICATION ; OXIDATION ; MODULATION ; ELECTRODE ; NANOROD
语种	英语
WOS记录号	WOS:000402584900072
资助机构	Guangdong Engineering Technique Research Center(506302679076) ; Research Platform of Universities in Foshan(2014AG10009) ; Jiangsu Provincial Key Laboratory of Biomass Energy and Materials(JSBEM201608) ; Key Laboratory of Renewable Energy (Chinese Academy of Sciences)(y207k61001)
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/14132]
专题	中国科学院广州能源研究所
作者单位	1.Foshan Univ, Coll Mat Sci & Energy Engn, Foshan 528000, Guangdong, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yuyuan,Hu, Huawen,Chang, Menglei,et al. Non-uniform doping outperforms uniform doping for enhancing the photocatalytic efficiency of Au-doped TiO2 nanotubes in organic dye degradation[J]. CERAMICS INTERNATIONAL,2017,43(12):9053-9059.
APA	Zhang, Yuyuan.,Hu, Huawen.,Chang, Menglei.,Chen, Dongchu.,Zhang, Min.,...&Li, Xinjun.(2017).Non-uniform doping outperforms uniform doping for enhancing the photocatalytic efficiency of Au-doped TiO2 nanotubes in organic dye degradation.CERAMICS INTERNATIONAL,43(12),9053-9059.
MLA	Zhang, Yuyuan,et al."Non-uniform doping outperforms uniform doping for enhancing the photocatalytic efficiency of Au-doped TiO2 nanotubes in organic dye degradation".CERAMICS INTERNATIONAL 43.12(2017):9053-9059.