物理化学学报 >> 2000, Vol. 16 >> Issue (05): 459-463.doi: 10.3866/PKU.WHXB20000517

研究简报 上一篇    下一篇

稀土镧掺杂二氧化钛的光催化特性

水淼, 岳林海, 徐铸德   

  1. 浙江大学化学系,杭州 310027
  • 收稿日期:1999-06-14 修回日期:1999-10-20 发布日期:2000-05-15
  • 通讯作者: 岳林海

Effect of Lanthanum Doping on the Photocatalytic Activity of Titanium Dioxide

Shui Miao, Yue Lin-Hai, Xu Zhu-De   

  1. Department of Chemistry,Zhejiang University,Hangzhou 310027
  • Received:1999-06-14 Revised:1999-10-20 Published:2000-05-15
  • Contact: Yue Lin-Hai

关键词: 镧掺杂, 光催化, 二氧化钛, 晶格膨胀

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 words: Lanthanum doping, Photocatalytic activity, Titanium dioxide, Lanttice expansion