影像科学与光化学 ›› 1988, Vol. 6 ›› Issue (4): 1-9.DOI: 10.7517/j.issn.1674-0475.1988.04.1

• 研究论文 •    下一篇

有机羧酸的光催化分解反应

蔡乃才, 简翠英, 董庆华   

  1. 武汉大学化学系, 武汉
  • 收稿日期:1987-04-11 修回日期:1987-12-07 出版日期:1988-11-20 发布日期:1988-11-20
  • 基金资助:
    国家自然科学基金

THE PHOTOCATALYTIC DECOMPOSITION OF VARIOUS ORGANIC CARBOXYLIC ACIDS

CAI NAI-CAI, JIAN CUI-YING, DONG CHIN-HUA   

  1. Department of Chemistry, Wuhan University, Wuhan
  • Received:1987-04-11 Revised:1987-12-07 Online:1988-11-20 Published:1988-11-20

摘要: 测定了各种有机羧酸在Pt/TiO2粉末悬浮体系中的光催化分解速度。不同分子结构的有机羧酸的光催化分解速度有明显的差别。通过计算与羧基相连的各种基团的诱导效应指数,发现基团的推电子能力对有机羧酸的光催化分解速度起主导作用,找到了有机羧酸光催化分解速度与其分子结构间的关系。

关键词: 光催化分解, 有机羧酸分解, 二氧化钛, 诱导效应指数

Abstract: The rate of photocatalytic decomposition of aqueous solutions of various organic car-boxylic acids with suspended Pt/TiO2 powder was determinated and the inductive effect index of organic groups attached on the carboxylic group was calculated. It was found that the influence of the electron pulling ability of attached group on the decomposition of organic carboxylic acid is the dominating factor. A relation between the rate of photocatalytic decomposition and the molecular structure of the organic acid was observed.

Key words: photocatalytic decomposition. organic carboxylic decomposition, titanium oxide, inductive effect index