中文摘要：

以Ti/SnO2-Sb2O5为阳极,石墨为阴极研究了苯胺的电化学氧化降解。在阳极氧化的基础上,通过外加Fe2＋实现了阳极氧化与电Fenton氧化协同降解苯胺。结果表明,不存在Fe2＋时,中性介质和高阳极电位有利于提高苯胺去除率。苯胺被阳极氧化降解的同时,-0.65 V和酸性介质条件下石墨阴极具有良好的还原O2生成H2O2的性能。在pH=3.0和-0.65 V阴极电位条件下,电化学反应600 min,H2O2的累计质量浓度达到110 mg·L-1。引入Fe2＋后,苯胺降解效果和电流效率得到大幅度提高。在阴极电位为-0.65 V,pH值为3.0,初始Fe2＋浓度为0.50 mmol·L-1的条件下,处理180 mg·L-1苯胺水溶液（Na2SO4为支持电解质）600 min,苯胺去除率达100%,COD去除率为78%。因此,使用恰当的电极材料,控制合理的电极电位,可以实现双极电化学氧化降解水中有机物,并且获得较高的电流效率。

英文摘要：

The present work intends to introduce its research results on the degradation of aniline by way of electrochemical oxidation while taking Ti/SnO2 Sb2O5 electrode as anode and graphite electrode as cathode. Actually, what we have done is just in accord with the ever increasing research trend in the application of electrochemical oxidation technology for the organic pollutants degradation in industrial sewage. The results of our experiments show that a neutral medium and a high anodic potential is beneficial for the aniline removal by anodic oxidation in the absence of Fe2＋. In the course of aniline degradation by anodic oxidation, the graphite cathode behaves itself perfectly in generating H2O2 via the reduction of O2 at the presence of -0.65 V and acid medium. When the initial pH of the solution was 3.0 and the constant cathodic potential was -0.65 V, it was possible to make the concentration of H2O2 reach 110 mg·L-1 by the electrochemical reaction of 600 min, which presented an important base for the electro-Fenton oxidation. Besides, though the anodic oxidation proves to be able to degrade the aniline in the sewage, it is still possible to gain the low current efficiency and the high energy consumption. However, when Fe2＋ was added to the electrolyte, it proves possible to enhance the aniline degradation and the current efficiency remarkably. When the conditions of -0.65 V cathodic potential, pH 3.0 and 0.50 mmol·L-1 Fe2＋ could be made sure, it would be possible to achieve a COD removing rate of 78% with a current efficiency of 98% when the aniline solution （with Na2SO4 as supporting electrolyte） was electro-chemically treated at the speed of 180 mg·L-1 for 600 min. Thus, our research indicates that the dual-electrode electrochemical oxidation is feasible for the degradation of organic compounds by taking Ti/SnO2-Sb2O5 as anode as well as the reasonable electrode potential at the above said high current efficiency. Based on the above said degradation rate and the current efficiency, the dual-electr