聚苯胺载铂电极对甲醛的电催化氧化  

Electrocatalytic Effect of Polyaniline Electrode Modified by Platinum Microparticles on Oxidation of Formaldehyde

作　　者：陈忠平[1] 褚道葆[2] 秦家成 宋常春[1] 陈君华[1] 过家好[1] 张婷[1] 

机构地区：[1]安徽科技学院化学与材料工程学院,凤阳233100 [2]安徽师范大学化学与材料科学学院,芜湖241000 [3]合肥工业大学化工学院,合肥230009

出　　处：《材料导报》2014年第22期36-39,共4页Materials Reports

基　　金：安徽省高校自然科学重点基金(KJ2013A079)

摘　　要：在金属Ti电极基体上,以循环伏安法聚合得到颗粒状聚苯胺修饰电极,以聚苯胺为Pt的载体,制备得到聚苯胺载铂电极(Pt/PAn/Ti),并通过扫描电镜和循环伏安法对该电极进行了表征。以Pt/PAn/Ti电极为阳极研究了甲醛在该电极上的氧化,结果表明,聚苯胺的存在使得铂微粒分散程度更好,有效面积更大,对甲醛的电催化氧化的电流密度达到77.2mA/cm2,是同样条件下没有聚苯胺电极的2.3倍。同时,该电极对甲醛的催化氧化效果与铂的沉积量有一定关系。Granular polyaniline （PAn） has been achieved on Ti-based metal with cyclic voltammetry. Polyaniline electrode modified by platinum microparticles （Pt/PAn/Ti） was prepared and was characterized by SEM and cyclic voltammetry （CV）. Electrocatalytic oxidation of formaldehyde on Pt/PAn/Ti electrode was studied and the result showed that platinum microparticles deposited are dispersed and have bigger effective area. Oxidation current density of formaldehyde achieves 77.2 mA/cm2 on Pt/PAn/Ti electrode. At the same time, electrocatalytic oxidation effect of formaldehyde has relationship with amount of platinum microparticles.

关 键 词：钛电极 聚苯胺 循环伏安法 电催化氧化 甲醛 

分 类 号：O646.5[理学—物理化学]