PHOTOCATALYTIC OXIDATION OF PHENOL IN THE PRESENCE OF HYDROGEN-PEROXIDE AND TITANIUM-DIOXIDE POWDERS

被引：151

作者：

WEI, TY ^{[1
]}

WANG, YY ^{[1
]}

WAN, CC ^{[1
]}

机构：

[1] NATL TSING HUA UNIV,DEPT CHEM ENGN,HSINCHU 300,TAIWAN

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1990年 / 55卷 / 01期

关键词：

D O I：

10.1016/1010-6030(90)80024-R

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of hydrogen peroxide on the photocatalytic oxidation of phenol on illuminated TiO2 surfaces has been investigated. The experimental results indicate that transition metal ions, such as Fe3+ and Cu2+, affect the photocatalytic oxidation of phenol. In the absence of added H2O2 the ferric ions induce the occurrence of the photo-Fenton-type reaction so that the phenol removal of an initial 1000 mg l-(1) solution is enhanced from 23 to 33% within 8 h. However, the cupric ions show a negative effect. In the presence of added H2O2, both the ferric and the cupric ions enhance the phenol oxidation rate drastically. A 1000 mg 1-(1) phenol solution can be completely decomposed within 1 h and the total organic carbon removal reaches 80%. A reaction mechanism which involves the generation of hydroxyl radicals is proposed.

引用

页码：115 / 126

页数：12

共 33 条

[1] PHOTOCATALYTIC DEGRADATION OF PHENOL IN AQUEOUS TITANIUM-DIOXIDE DISPERSIONS [J].