活性染料电化学氧化降解反应机理分析

Study on Mechanism and Selection of Sodium Salt Electrolytes in Electrochemical Degradation of the Reactive Dye

电化学法是一种清洁处理方法,已广泛用于有机废水处理.印染行业是当前主要的排污行业,而活性染料废水又是印染废水的主要组成部分.研究以NaCl和Na2SO4作电解质,Pb/PbO2作阳极,分析电化学法降解活性染料的机理,提出"四阶段"降解过程机制.

Fe3O4 nanoparticles were prepared with co- precipitation method, at different temperature followed by reflux treatment in deioned water at 140℃. The crystalline structure, mean particle size, the affinity of the as - prepared Fe3O4 nanoparticles towards N, N - diethyl - the phenylenediamine （DPD） and the activity of H202 decomposition catalyzed by Fe3O4 nanoparticles were investigated with XRD technique, DPD method and catalytic test. The results show that the particle size and crystalline structure of the Fe3O4 nanoparticles changed confirmed that the as - prepared DPD as substrate. with the preparation temperature, so did the affinity towards DPD. It was Fe3O4 nanoparticles have the ability to detect low concentration of H2O2 with