Photocatalytic activity of TiO2 thin film non-uniformly doped by Ni

doi:10.1016/j.matchemphys.2005.07.069

GIEC OpenIR > 中国科学院广州能源研究所

	Photocatalytic activity of TiO2 thin film non-uniformly doped by Ni
	Yu, H ; Li, XJ ; Zheng, SJ ; Xu, W
	2006-05-10
发表期刊	MATERIALS CHEMISTRY AND PHYSICS
卷号	97 期号:1 页码:59-63
摘要	The thin films of TiO2 doped by Ni non-uniformly were prepared by a modified dip-hoisting process of sol-gel method. The transmittance, absorbency, photocurrent and open-circuit potential of the thin films were studied by UV-vis spectrophotometer and electrochemical workstation. The activity of thin films was characterized by photocatalytic degradation of aqueous methyl orange under UV irradiation. The results showed that the photocatalytic activity of TiO2 thin films can be remarkably enhanced by Ni non-uniformly doping compared with the pure ones, while that of the uniformly doped can only be improved a little. The transmittance of the TiO2 thin films doped by Ni uniformly and non-uniformly doping showed '' blue shift '' and '' red shift '', respectively. The absorbency of the non-uniformly doped extended to '' red shift ''. Under UV irradiation, the non-uniformly doped TiO2 thin films show higher open-circuit potential and photocurrent compared with that of the pure ones, which demonstrated that the photogenerated electron-hole pairs were effectively separated. And the electrode bias influenced the photocurrent of Ni non-uniformly doped TiO2 thin films greatly, which verified the structure of p-n junction. The photocatalytic activity mechanism of the non-uniformly doped TiO2 was discussed by p-n junction theory. (c) 2005 Elsevier B.V. All rights reserved.
文章类型	Article
关键词	Photocatalyst Tio2 Thin Films Non-uniformity Ni Doping
WOS标题词	Science & Technology ; Technology
DOI	10.1016/j.matchemphys.2005.07.069
研究领域[WOS]	Materials Science
关键词[WOS]	PHOTODEGRADATION ; PHOTOREDUCTION ; DINITROGEN ; TITANIA ; PHENOL
收录类别	SCI
语种	英语
WOS类目	Materials Science, Multidisciplinary
WOS记录号	WOS:000236458400010
引用统计	被引频次：60[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.giec.ac.cn/handle/344007/10257
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Yu, H,Li, XJ,Zheng, SJ,et al. Photocatalytic activity of TiO2 thin film non-uniformly doped by Ni[J]. MATERIALS CHEMISTRY AND PHYSICS,2006,97(1):59-63.
APA	Yu, H,Li, XJ,Zheng, SJ,&Xu, W.(2006).Photocatalytic activity of TiO2 thin film non-uniformly doped by Ni.MATERIALS CHEMISTRY AND PHYSICS,97(1),59-63.
MLA	Yu, H,et al."Photocatalytic activity of TiO2 thin film non-uniformly doped by Ni".MATERIALS CHEMISTRY AND PHYSICS 97.1(2006):59-63.