Direct synthesis of palladium nanoparticles on Mn3O4 modified multi-walled carbon nanotubes: A highly active catalyst for methanol electro-oxidation in alkaline media

被引：72
|
作者：
Zhao, Yanchun [1 ]
Nie, Sulian [1 ]
Wang, Huaiwen [2 ]
Tian, Jianniao [1 ]
Ning, Zhen [1 ]
Li, Xiaoxiao [1 ]
机构：
[1] Guangxi Normal Univ, Minist Educ China, Key Lab Chem & Mol Engn Med Resources, Coll Chem & Chem Engn, Guilin 541004, Peoples R China
[2] Univ Oklahoma, Hlth Sci Ctr, Lab Mol Biol & Cytometry Res, Oklahoma City, OK 73104 USA
来源：
JOURNAL OF POWER SOURCES | 2012年 / 218卷
基金：
中国国家自然科学基金;
关键词：
Multi-walled carbon nanotubes; Trimanganese tetraoxide; Palladium nanoparticles; Electro-oxidation; Alkaline direct methanol fuel cells; TERNARY COMPOSITE FILMS; ELECTROCATALYTIC ACTIVITY; MANGANESE OXIDE; ETHANOL ELECTROOXIDATION; ALCOHOL ELECTROOXIDATION; PLATINUM NANOPARTICLES; THERMAL-DECOMPOSITION; PD CATALYSTS; THIN-FILMS; OXIDATION;
D O I：
10.1016/j.jpowsour.2012.07.012
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A facile preparation route for Pd electrocatalyst (Pd-Mn3O4/MWCNTs) composed of similar to 3.5 nm Pd nanoparticles homogeneously anchored on Mn3O4 modified multi-walled carbon nanotubes (Mn3O4/MWCNTs) is reported. The morphology, component and crystallinity of the catalyst were characterized by means of different techniques. The electrochemical behavior of the Pd-Mn3O4/MWCNT composites was examined by cyclic voltammetry toward methanol electro-oxidation in alkaline media. Pd nanoparticles binding on the surface of the Mn3O4/MWCNTs exhibited improved electrocatalytic activity and anti-COads species poisoned ability compared to Pd/MWCNTs and Pd/XC-72 (Pd/commercial Vulcan XC-72 carbon black). This improved performance of the as-prepared electrocatalyst is attributed to the synergistic effect of Mn3O4 nanoparticles and MWCNTs. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：320 / 330
页数：11
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