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Acta Physico-Chimica Sinica  2000, Vol. 16 Issue (05): 459-463    DOI: 10.3866/PKU.WHXB20000517
Note     
Effect of Lanthanum Doping on the Photocatalytic Activity of Titanium Dioxide
Shui Miao, Yue Lin-Hai, Xu Zhu-De
Department of Chemistry,Zhejiang University,Hangzhou 310027
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Abstract  

The effect of Lanthanum content, calcinating temperature and calcinating time on the photocatalytic activity of Lanthanum doping TiO 2 was investigated. The study showed that samples treated under higher temperature and longer calcinating time exhibited higher photocatalytic activity. The X ray diffraction pattern revealed that the lattice of those samples was highly expanded. It is suggested that the highly distorted crystal lattice may be involved in producing more ways by which the hole was captured. Thus, the photocatalytic activity of samples treated under higher temperature and longer time was promoted.



Key wordsLanthanum doping      Photocatalytic activity      Titanium dioxide      Lanttice expansion     
Received: 14 June 1999      Published: 15 May 2000
Corresponding Authors: Yue Lin-Hai   
Cite this article:

Shui Miao, Yue Lin-Hai, Xu Zhu-De. Effect of Lanthanum Doping on the Photocatalytic Activity of Titanium Dioxide. Acta Physico-Chimica Sinica, 2000, 16(05): 459-463.

URL:

http://www.whxb.pku.edu.cn/10.3866/PKU.WHXB20000517     OR     http://www.whxb.pku.edu.cn/Y2000/V16/I05/459

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