电芬顿降解X3B中Fe^(2+)/Fe^(3+)催化循环行为  

Catalytic Recycling Behavior of the Fe^(3+)/Fe^(2+) System in the Electro-Fenton Degradation of Brilliant Red X3B

作　　者：孙杰[1] 彭巧丽[1] 莫文艳[1] 

机构地区：[1]中南民族大学化学与材料科学学院,催化材料科学湖北省暨国家民委-教育部重点实验室,武汉430074

出　　处：《中南民族大学学报（自然科学版）》2012年第3期19-22,共4页Journal of South-Central University for Nationalities：Natural Science Edition

基　　金：国家自然科学基金资助项目(20807057);湖北省杰出青年基金资助项目(2011CDA106);武汉市工程中心计划资助项目(200950431227&201160638173)

摘　　要：以具有高比表面积的活性炭纤维毡(ACF)为阴极,通过电芬顿反应降解艳红染料X3B,考察了X3B降解反应动力学和初始催化剂的离子形态对其降解效果的影响,并采用X射线光电子能谱(XPS)和紫外可见分光光度法(UV-Vis)测定了反应过程中电极表面和溶液中Fe2+/Fe3+的含量.结果表明:X3B降解符合一级动力学反应机理,初始催化剂离子形态对降解效果影响不显著,ACF表面和溶液中Fe2+/Fe3+的转化规律一致.Brilliant red X3B in dye wastewater was degradated by electro-Fenton method using high surface area activated carbon fiber（ACF） as a cathode.The effects of degradation reaction kinetics and ion form of the initial catalyst on its degradation were investigated.The content of Fe2＋/Fe3＋ on electrode surface and in the solution was characterized by X-ray photoelectron spectroscopy（XPS） and UV-Vis diffuse reflectance spectroscopy.The results showed that the degradation of X3B meets the first-order kinetics and there was little effect of the iron initial valence on its degradation.Moreover,the transformation performance of Fe2＋/Fe3＋ between the surface of ACF and the solution was consisteat with each other.

关 键 词：艳红染料X3B 电-Fenton反应 Fe2+/Fe3+浓度比 

分 类 号：O643.36[理学—物理化学] O646.54[理学—化学]