Using phosphomolybdic acid (H3PMo12O40) to efficiently enhance the electrocatalytic activity and CO-tolerance of platinum nanoparticles supported on multi-walled carbon nanotubes catalyst in acidic medium

被引：22

作者：

Guo, Xun ^{[1
]}

Guo, Dao-Jun ^{[1
,2
]}

Wang, Jian-She ^{[3
]}

Qiu, Xin-Ping ^{[1
]}

Chen, Li-Quan ^{[1
]}

Zhu, Wen-Tao ^{[1
]}

机构：

[1] Tsinghua Univ, Key Lab Organ Optoelect & Mol Engn, Dept Chem, Beijing 100084, Peoples R China

[2] Qufu Normal Univ, Sch Chem & Chem Engn, Qufu 273165, Shandong, Peoples R China

[3] Zhengzhou Univ, Sch Chem Engn, Zhengzhou 450000, Henan, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2010年 / 638卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Alcohol electro-oxidation; Carbon monoxide tolerance; Heteropoly acids; Phosphomolybdic acid; Pt nanoparticles; Direct alcohol fuel cells; METHANOL FUEL-CELL; HETEROPOLY ACIDS; TECHNOLOGIES; OXIDATION; MEMBRANES; ANODE;

D O I：

10.1016/j.jelechem.2009.09.001

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple approach is reported for utilizing phosphomolybdic acid, H3PMo12O40, (HPMo) to enhance the electrocatalytic activity and carbon monoxide (CO) tolerance of platinum electrocatalysts supported on multi-walled carbon nanotubes (MWCNTs) in acidic medium. Pt/MWCNTs catalyst is prepared by the ethylene glycol reduction method, and then physically mixed with HPMo for electrochemical characterizations in terms of alcohol and CO electro-oxidation using cyclic voltammetry (CV), chronoamperometry and electrochemical impendence spectra (EIS). The results show that HPMo can efficiently enhance the electrocatalytic activity and CO-tolerance of Pt/MWCNTs catalyst. The effect of HPMo wt.% on the electrocatalytic activity towards methanol electro-oxidation of Pt/MWCNTs is also investigated by CV. The best results appear at the HPMo wt.% = 30%. We further investigated the reason of Pt/MWCNTs + HPMo composite catalyst with good stability. (c) 2009 Published by Elsevier B.V.

引用

页码：167 / 172

页数：6