Near-UV-VIS light induced acid orange 7 bleaching in the presence of SiW12O404- catalyst

被引：16

作者：

Arslan-Alaton, I ^{[1
]}

Ferry, JL

机构：

[1] Istanbul Tech Univ, Fac Civil Engn, Dept Environm Engn, TR-80626 Istanbul, Turkey

[2] Univ S Carolina, Grad Sci Res Ctr, Dept Chem & Biochem, Columbia, SC 29208 USA

来源：

JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY | 2002年 / 152卷 / 1-3期

关键词：

acid orange 7; textile azo dyes; competition kinetics; heteropolyblue; polyoxometalates; photochemical treatment; SiW12O404-; catalyst;

D O I：

10.1016/S1010-6030(02)00185-5

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 azo dye acid orange 7 (AO7) was decolourized by SiW12O405-, the one-electron photo-chemically reduced form of SiW12O404- catalyst, in aqueous solutions of aerated and de-aerated sacrificial electron donor isopropanol. Under our experimental conditions, the AO7 decay rate depended upon the competition between the azo dye and molecular oxygen for SiW12O405-. The colour removal rate constant was found as 5.2 x 10(4) M-1 s(-1) by applying AO7-O-2 competition kinetics based on a simple kinetic reaction scheme. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：175 / 181

页数：7

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