水体中常见离子对Fe_3O_4/H_2O_2降解孔雀石绿的影响  

Influences of Anions and Cations on the Degratdation of Malachite Green by Fe_3O_4/H_2O_2

作　　者：肖雨俊 张富青[1] 唐兴兴[1] 袁军[1] 

机构地区：[1]武汉工程大学,湖北武汉430073

出　　处：《山东化工》2016年第7期129-132,共4页Shandong Chemical Industry

摘　　要：磁性纳米Fe_3O_4作为类Fenton催化剂,能够有效催化H_2O_2降解孔雀石绿(MG)废水。而实际染料废水中常含有多种无机离子和有机物,选取五种典型离子(SO42-、Cl-、Ca^(2+)、Mg^(2+)和腐植酸),探讨不同浓度离子对Fe_3O_4/H_2O_2降解MG的影响,并对反应前后Fe_3O_4的晶体结构进行分析。结果表明:腐植酸对Fe_3O_4/H_2O_2降解MG具有促进作用;Cl-和SO42-在不同程度上抑制了该催化降解反应;Ca^(2+)和Mg^(2+)对MG的降解没有明显影响;Fe_3O_4的晶体结构没有因为上述典型离子的加入而发生改变。As a Fenton- like catalyst,Fe3O4 magnetic nanoparticles could be used for the degradation of malachite green（ MG） in the presence of H2O2 effectively. The effects of typical ions（ SO42-、Cl-、Ca^（2＋）、Mg^（2＋）and humic acids） with different concentrations on the degradation of MG by Fe3O4/ H2O2 were investigated as there are a lot of anions and cations in the actual dyeing wastewater. Meanwhile,the Fe3O4 were characterized by power X- ray diffraction（ XRD）. The results showed that humic acids enhanced the degradation,Cl-and SO42-inhibited the degradation in different degrees,Ca^（2＋）and Mg^（2＋）exhibited negligible effects,and the crystal structure of Fe3O4 was not changed because of the typical ions.

关 键 词：典型离子 Fe3O4/H2O2 催化降解 孔雀石绿 

分 类 号：X703.5[环境科学与工程—环境工程]