{[PMo_(12)O_(40)]^(3-)-Pt/PAMAM}_n多层复合膜的制备及对甲醇的电催化氧化活性  

Preparation of{[PMo_(12)O_(40)]^(3-)-Pt/PAMAM}_n multilayer films and its electrocatalytic activity for methanol oxidation

作　　者：罗明洪[1] 林深[2] 

机构地区：[1]南昌师范学院化学系,江西南昌330032 [2]福建师范大学化学化工学院,福建福州350117

出　　处：《化学研究与应用》2015年第11期1698-1704,共7页Chemical Research and Application

基　　金：国家自然科学基金项目(20771024)资助;南昌师范学院科研项目(10KJ05)资助

摘　　要：用电化学扫描法制备了{[PMo12O40]3--Pt/PAMAM}n多层复合膜,通过X射线光电子能谱(XPS)、循环伏安测定(CV)和原子力显微镜(AFM)对样品的化学组成和膜的均匀性进行了表征。测试和分析结果表明[PMo12O40]3--Pt和PAMAM通过静电相互作用形成了交替多层复合膜,且膜的增长均匀,[PMo12O40]3-和Pt粒子均匀分布在间隔剂PAMAM上。采用三电极体系的循环伏安电化学分析方法研究了样品在酸性溶液中对甲醇的电催化氧化活性,结果表明,与Pt/GCE催化剂相比,{[PMo12O40]3--Pt/PAMAM}n/GCE呈现出较高的电催化氧化活性和好的稳定性。The{ [PMo12O40]3--Pt/PAMAM}nmultilayer composite films were prepared by electrochemical scanning method. The composition of the multilayer films was characterized by X-ray photoelectron spectra. Atomic force microscopy presented an uniform surface morphology of the multilayer films. The multilayer films were grown gradually and uniformly in the synthesis process as monitored by cyclic voltammetry. The electrocatalytic activity for methanol oxidation was measured by cyclic voltammetry with a threeelectrode system in an acidic solution. Compared with Pt/GCE,{ [PMo12O40]3--Pt/PAMAM}n/ GCE exhibits higher catalytic oxidation activity and better stability.

关 键 词：多金属氧酸盐 聚酰胺-胺载体 电化学扫描法 甲醇氧化 电催化 

分 类 号：O646[理学—物理化学]