化学学报 ›› 1999, Vol. 57 ›› Issue (11): 1219-1225. 上一篇    下一篇

研究论文

二氧化钛微晶结构和光催化性能关联性研究

岳林海;水淼;徐铸德   

  1. 浙江大学化学系.杭州(310027)
  • 发布日期:1999-11-15

A study on correlation of crystal distortion with photocatalytic activity of titanium dioxide

Yue Linhai;Shui Miao;Xu Zhude   

  1. Zhejiang Univ, Dept Chem.Hangzhou(310027)
  • Published:1999-11-15

研究了不同煅烧温度、煅烧时间的系列二氧化钛样品悬浮体系光催化降解X-3B活性艳红的催化活性。分析了晶粒尺寸、晶相、晶格畸变应力和光催化体系等诸多因素对二氧化钛光催化活性的影响。发现晶格畸变应力对空穴电子对复合速率的影响在诸因素中占主导地位,并在一定程度上决定了二氧化钛悬浮体系的光催化效能。

关键词: 二氧化钛, 晶体结构, 光催化, 畸变, 晶格场

The photocatalytic activity of a series of titanium dioxides in the oxidation of X-3B pigment is investigated. The factors including crystallite size, lattice distortion and anatase content that influence the photocatalytic activity of titanium dioxide dispersion are discussed in detail. We propose that lattice distortion that inhibits the hole and electron pair recombination dominates the above factors and to some extent determines the photocatalytic efficiency of titanium dioxide dispersions.

Key words: TITANIUM DIOXIDE, CRYSTAL STRUCTURE, PHOTOCATALYSIS, ABERRATION, CRYSTAL FIELD

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