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

页码：113 / 123

页数：11

共 49 条

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