PHOTOCATALYTIC DEGRADATION OF PHENOL IN AQUEOUS POLYCRYSTALLINE TIO2 DISPERSIONS - THE INFLUENCE OF FE3+, FE2+ AND AG+ ON THE REACTION-RATE

被引：166
|
作者：
SCLAFANI, A
PALMISANO, L
DAVI, E
机构：
[1] Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, Università di Palermo, 90128 Palermo, Vialle delle Scienze
来源：
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 1991年 / 56卷 / 01期
关键词：
D O I：
10.1016/1010-6030(91)80011-6
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 influence of Fe3+, Fe2+ and Ag+ on phenol photodegradation performed in aqueous polycrystalline TiO2 (anatase) and TiO2 (rutile) dispersions was investigated. These ions can react very easily with peroxo species produced on the catalyst surface and/or in the solution. Experimental conditions for the continuous photoproduction of Fenton reactive can be achieved in this way. Maximum photoactivity was observed for TiO2 (anatase) in the presence of oxygen and [Fe3+] = 5 x 10(-4) M. The behavior of Fe2+ was similar to Fe3+ for the same experimental conditions. Anatase photoactivity was beneficially influenced in the presence of oxygen and [Ag+] = 1 x 10(-4) M.
引用
收藏
页码：113 / 123
页数：11
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