A novel method for detecting . OH radicals generated by photoexcited nanoparticles

被引：9

作者：

Dai, Q ^{[1
]}

Wang, DY ^{[1
]}

Yuan, DW ^{[1
]}

机构：

[1] Southeast Univ, Dept Chem & Chem Engn, Natl Lab Mol & Biomol Elect, Nanjing 210018, Peoples R China

来源：

SUPRAMOLECULAR SCIENCE | 1998年 / 5卷 / 5-6期

关键词：

TiO2; OH radicals; fenton reaction;

D O I：

10.1016/S0968-5677(98)00053-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The Fenton reactions occur because of the generation of H2O2 in the photoexcited independent TiO2 systems or TiO2/SnO2 coupled systems. The . OH radicals in these reactions were indirectly measured by colorimetric method. According to the Lambert-Beer law, we obtained the qualitative and quantitative relationships between the amount of TiO2 or TiO2/SnO2 coupled particles and the amount of . OH radicals produced by these systems. It provides a convenient procedure for making a thorough study on the photocatalytic mechanism of semiconductor nanoparticles, and in particular, to select highly efficient multicomponent semiconductor systems for photocatalysis. (C) 1998 Elsevier Science Limited. All rights reserved.

引用

页码：469 / 473

页数：5