摘要
对持久性难降解的有机染料孔雀石绿溶液的光催化降解过程进行研究,考察了孔雀石绿的初始浓度、催化剂的用量、溶液的初始pH值以及H2O2的加入量等条件变化对孔雀石绿的脱色率的影响.实验结果表明,光照时间和其他实验条件均相同时,孔雀石绿溶液的初始浓度为2 mg.L-1和5 mg.L-1时其脱色率较高;最佳的催化剂用量为1 g.L-1;溶液初始pH值为8的弱碱条件下降解效果较好;氧化剂H2O2的加入量为0.1 Vt.%时光催化反应效果较佳.
The influences of various parameters such as the initial concentration of Malachite Green,the amount of catalyst,initial pH and the amount of H2O2 had been investigated.With the same irradiation time and other experimental conditions,the decolorization rate of degradation of malachite-green was higher when the initial concentration was 2 mg·L-1 and 5 mg·L-1.It also showed that the optimum dosage of catalyst and H2O2 was 1g·L-1 and 0.1 Vt.% respectively.In addition,when pH=8 the degradation effect of malachite-green was better.
出处
《闽江学院学报》
2009年第5期98-102,共5页
Journal of Minjiang University
基金
闽江学院科研育苗项目(YKY06002)
关键词
TIO2
光催化
孔雀石绿
降解
脱色率
TiO2
photocatalysis
malachite-green
degradation
decolorization rate
