SiW_(12)O_(40)^(4-)在玻碳电极上的多层组装及电催化性能研究  

Layer-by-layer Assembly of Silicotungstate Multilayer Films on Glassy Carbon Electrode and Their Electrocatalytic Behaviors

作　　者：杜金艳[1] 黄玉成[1] 吕桂琴[2] 

机构地区：[1]安徽师范大学化学与材料学院,安徽芜湖241000 [2]北京理工大学理学院,北京100081

出　　处：《分析科学学报》2009年第6期699-701,共3页Journal of Analytical Science

基　　金：安徽省高校青年教师科研资助计划(No.2006jq1052)

摘　　要：本文采用层层自组装法制备包含杂多酸SiW12O440-(SiW12)和聚合物阳离子聚二烯丙基二甲基氯化铵(PDDA)的多层膜修饰电极,并用循环伏安法研究其对BrO3-和NO2-体系还原的电催化性能。结果表明:SiW12修饰电极对BrO3-和NO2-的还原具有明显的电催化作用。催化电流随修饰层数的增加而明显增加。A new modified electrode was composed of heteropolyanion （SiWl2） and fabricated by layer-by-layer assembly of multilayer films cationic polymer poly（diallyldimethylammonium chloride）. The reduction electrocatalytic responses of BrOa and NO2^- on the modified electrode have been investigated. The result shows that the SiW12-containing multilayer films exhibit remarkable electroeatalytic activities for the reduction of BrO3^- and NO2^-. The electrocatalytic effects are enhanced with the increasing layer numbers.

关 键 词：SiW12 层层组装 循环伏安 电催化还原 

分 类 号：O657.1[理学—分析化学]