The role of copper(II) ions in the photocatalytic oxidation of 1,4-dioxane

被引：27
作者：
Lam, S. W.
Hermawan, M.
Coleman, H. M.
Fisher, K.
Amal, R. [1 ]
机构：
[1] Univ New S Wales, Sch Chem Sci & Engn, ARC Ctr Excellence Funct Nanomat, Sydney, NSW 2052, Australia
[2] Univ New S Wales, Sch Civil & Environm Engn, Ctr Water & Waste Technol, Sydney, NSW 2052, Australia
[3] Univ Sydney, Sch Chem, Sydney, NSW 2006, Australia
来源：
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 2007年 / 278卷 / 1-2期
基金：
澳大利亚研究理事会; 英国惠康基金;
关键词：
1.4-dioxane; ethylene glycol diformate; photocatalysis; copper(II) ions;
D O I：
10.1016/j.molcata.2007.09.007
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 Cu2+ on the photocatalytic oxidation of 1,4-dioxane was evaluated. The addition of Cu2+ led to an enhancing effect in the photocatalytic degradation and mineralisation of 1,4-dioxane for both pH 3 and 5. This positive role of Cu2+ was attributed to its involvement in the ligand-to-metal charge transfer (LMCT) process, where Cu2+ formed complexes with 1,4-dioxane and/or its intermediate products, providing an alternative routes for the oxidation reaction via photoredox mechanism. The supporting evidence to the complexes formation has been confirmed using an electron spin resonance (ESR) spectroscopy and the semi-empirical PM3 calculation. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：152 / 159
页数：8
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