Improvement of photocatalytic activity of TiO2 via combined route of metal doping and surface acidification

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	Improvement of photocatalytic activity of TiO2 via combined route of metal doping and surface acidification
	Luan, Yong; Fu, Pingfeng; Dai, Xuegang
刊名	SURFACE REVIEW AND LETTERS
	2006-08-01
卷号	13 期号:4 页码:429-438
关键词	TiO2 metal doping modification photocatalysis
ISSN号	0218-625X
其他题名	Surf. Rev. Lett.
中文摘要	In the present work, a combined route involving first doping of iron or neodymium ions via sol-gel method followed by acidification of the metal-doped TiO2 particles for the improvement of the photocatalytic capability of TiO2 was reported. The obtained metal-doped/acidified TiO2 photocatalysts were thoroughly characterized by X-ray diffraction, Fourier transform infrared analysis, and photoluminescence emission spectra. At the same time, their photocatalytic activities were evaluated in simulant photodegradation of methylene blue (MB). The results based on these characterizations showed that not only a rutile layer formed on the surface of original TiO2 particles after surface cladding, but also the doped Fe or Nd ion had a favorable effect on suppression of the electron-hole recombination in the titania under ultraviolet light irradiation. Furthermore, the photocatalytic activity of the material obtained by Fe doping and acidification was substantially improved in comparison to the untreated TiO2. However, the sample prepared from Nd-doping and acidification of TiO2 showed decreased capability relative to the untreated TiO2 in degradation of MB under similar conditions. Finally, the reason why the photocatalytic activities of the obtained catalysts are sensitive to the metal-doping was discussed in details.
英文摘要	In the present work, a combined route involving first doping of iron or neodymium ions via sol-gel method followed by acidification of the metal-doped TiO2 particles for the improvement of the photocatalytic capability of TiO2 was reported. The obtained metal-doped/acidified TiO2 photocatalysts were thoroughly characterized by X-ray diffraction, Fourier transform infrared analysis, and photoluminescence emission spectra. At the same time, their photocatalytic activities were evaluated in simulant photodegradation of methylene blue (MB). The results based on these characterizations showed that not only a rutile layer formed on the surface of original TiO2 particles after surface cladding, but also the doped Fe or Nd ion had a favorable effect on suppression of the electron-hole recombination in the titania under ultraviolet light irradiation. Furthermore, the photocatalytic activity of the material obtained by Fe doping and acidification was substantially improved in comparison to the untreated TiO2. However, the sample prepared from Nd-doping and acidification of TiO2 showed decreased capability relative to the untreated TiO2 in degradation of MB under similar conditions. Finally, the reason why the photocatalytic activities of the obtained catalysts are sensitive to the metal-doping was discussed in details.
WOS标题词	Science & Technology ; Physical Sciences
类目[WOS]	Chemistry, Physical ; Physics, Condensed Matter
研究领域[WOS]	Chemistry ; Physics
关键词[WOS]	TITANIUM-DIOXIDE ; PHOTOLUMINESCENCE ; ELECTRON ; NANOPARTICLES ; DECOMPOSITION ; OXIDATION ; FILMS ; ACID
收录类别	SCI
原文出处	://WOS:000244516800012
语种	英语
WOS记录号	WOS:000244516800012
公开日期	2013-10-24
内容类型	期刊论文
版本	出版稿
源URL	[http://ir.ipe.ac.cn/handle/122111/3994]
专题	过程工程研究所_研究所（批量导入）
作者单位	Chinese Acad Sci, Inst Proc Engn, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Luan, Yong,Fu, Pingfeng,Dai, Xuegang. Improvement of photocatalytic activity of TiO2 via combined route of metal doping and surface acidification[J]. SURFACE REVIEW AND LETTERS,2006,13(4):429-438.
APA	Luan, Yong,Fu, Pingfeng,&Dai, Xuegang.(2006).Improvement of photocatalytic activity of TiO2 via combined route of metal doping and surface acidification.SURFACE REVIEW AND LETTERS,13(4),429-438.
MLA	Luan, Yong,et al."Improvement of photocatalytic activity of TiO2 via combined route of metal doping and surface acidification".SURFACE REVIEW AND LETTERS 13.4(2006):429-438.