Effect of hydrogen peroxide, periodate and persulfate on photocatalysis of 2-chlorobiphenyl in aqueous TiO2 suspensions

被引：213

作者：

Wang, YB

Hong, CS ^{[1
]}

机构：

[1] SUNY Albany, Sch Publ Hlth, Dept Environm Hlth & Toxicol, Albany, NY 12201 USA

[2] Wadsworth Ctr, New York State Dept Hlth, Albany, NY 12201 USA

来源：

WATER RESEARCH | 1999年 / 33卷 / 09期

关键词：

2-chlorobiphenyl; TiO2; photocatalysis; advanced oxidation process (AOP); H2O2; K2S2O8; KIO4;

D O I：

10.1016/S0043-1354(98)00436-9

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Decomposition of 2-chlorobiphenyl (2-CB) in the systems of UV/TiO2, UV/oxidant and UV/TiO2/oxidant (i.e. H2O2, S2O82- and IO4-), were investigated. The addition of inorganic oxidants to the UV/TiO2 system showed no rate-enhancing effects for the degradation of 2-CB with oxidant concentration of 10(-3) and 10(-2) M and TiO2 concentration of 25 mg/l. The negative effect of oxidants on the heterogeneous oxidation was demonstrated. Homogeneous photooxidation seems to dominate over the parallel heterogeneous process when both TiO2 and oxidants are present. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2031 / 2036

页数：6

共 29 条

[1] USE OF CATALASE AND SUPEROXIDE-DISMUTASE TO ASSESS THE ROLES OF HYDROGEN-PEROXIDE AND SUPEROXIDE IN THE TIO2 OR ZNO PHOTOCATALYTIC DESTRUCTION OF 1,2-DIMETHOXYBENZENE IN WATER [J].