新型聚邻苯二酚／铂复合膜修饰电极对甲醛电化学氧化  

The Electrochemical Oxidation of Formaldehyde on NOVE Polycatechol/Platinum Composite Modified Electode

作　　者：钱功明[1] 杨昌柱[2] 方柏[2] 陈铁军[1] 

机构地区：[1]武汉科技大学资源与环境工程学院,湖北武汉430081 [2]华中科技大学环境科学与工程学院,湖北武汉430074

出　　处：《分析科学学报》2009年第3期341-343,共3页Journal of Analytical Science

基　　金：华中科技大学科技研究基金(No.2006Z002A)

摘　　要：研究了聚邻苯二酚/铂复合膜(Pt/polymer/GC)修饰电极对甲醛的催化氧化作用。结果表明,甲醛在Pt/polymer/GC电极上的氧化过程是一表面控制过程。电解质体系对甲醛的催化氧化有明显影响:在0.5 mol/L硫酸中,甲醛主要发生第一步氧化生成甲酸的反应。甲醛的第一氧化峰电流随浓度的增加而增大,并且呈线性关系,可用于甲醛的检测。The catalytic activity for the formaldehyde oxidation was investigated on the polycatechol/ platinum composites modified electrode. The results indicated that the electrochemical oxidation of formaldehyde on the composites modified electrode was a diffusion-controlled process, which was influenced predominantly by the electrolyte. The main reaction occurred in 0.5 mol/L H2SO4 solution was the oxidation of formaldehyde to methyl acid, and the first oxidation peak current was linearly related to the formaldehyde concentration, which could be used for the determination of formaldehyde.

关 键 词：纳米铂 邻苯二酚 电催化 循环伏安法 

分 类 号：O657.15[理学—分析化学]