PHOTOCATALYSIS IN AQUEOUS-SOLUTION WITH SMALL TIO2 PARTICLES AND THE DEPENDENCE OF THE QUANTUM YIELD ON PARTICLE-SIZE AND LIGHT-INTENSITY

被引：101

作者：

GERISCHER, H

机构：

[1] Fritz-Haber-Institut der Max-Planck-Gesellschaft, D-14195 Berlin Dahlem

来源：

ELECTROCHIMICA ACTA | 1995年 / 40卷 / 10期

关键词：

PHOTOCATALYSIS; SEMICONDUCTOR PARTICLES; QUANTUM YIELD OF PHOTOINDUCED REACTIONS; PARTICLE SIZE EFFECTS; TIO2;

D O I：

10.1016/0013-4686(95)00058-M

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A model for the kinetics of photocatalytic processes on spherical TiO2 particles is developed. The quantum yield for the photooxidation of organic molecules by, oxygen in aqueous solution is derived for two cases. In one case the yield is limited by surface recombination, in the other case by a reverse reaction of electrons with the first oxidation product by holes. It is shown that the quantum yield increases with decreasing illumination intensity and size of the particle.

引用

页码：1277 / 1281

页数：5

共 21 条

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