Orange II photocatalysis on immobilised TiO2 Effect of the pH and H2O2

被引:147
作者
Fernández, J
Kiwi, J
Baeza, J
Freer, J
Lizama, C
Mansilla, HD
机构
[1] Univ Concepcion, Fac Chem Sci, Lab Renewable Resources, Concepcion, Chile
[2] Ecole Polytech Fed Lausanne, IMCB, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland
关键词
experimental design; immobilised TiO2; orange II; photocatalysis; pH and H2O2 effect;
D O I
10.1016/j.apcatb.2003.10.014
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 discoloration and mineralisation of the azo-dye Orange II in a photoreactor using TiO2-coated glass rings as immobilised photocatalyst is reported. The variation of pH and the H2O2 addition effect were systematically investigated. The use of the response surface methodology allowed to fit the optimal values of the parameters leading to Orange II abatement. Also, a single polynomial expression modelling the reaction was obtained. The photocatalytic degradation of Orange II was followed by spectrophotometric analysis and total organic carbon (TOC) measurements. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码:205 / 211
页数:7
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