[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.