Au@Pt core-shell nanoparticles supported on multiwalled carbon nanotubes for methanol oxidation

被引：53
作者：
Xu, Yangyang [1 ]
Dong, Yingnan [2 ]
Shi, Jin [1 ]
Xu, Mingli [1 ]
Zhang, Zhengfu [1 ]
Yang, Xikun [1 ]
机构：
[1] Kunming Univ Sci & Technol, Res Ctr Anal & Measurement, Kunming 650093, Peoples R China
[2] Kunming Inst Precious Met, State Key Lab Adv Technol Comprehens Utilizat Pla, Kunming 650106, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 13卷 / 01期
基金：
中国国家自然科学基金;
关键词：
Au@Pt core-shell nanoparticles; MWCNTs; Ultraviolet irradiation; Methanol oxidation; FORMIC-ACID OXIDATION; OXYGEN REDUCTION REACTION; ALKALINE MEDIA; PLATINUM; ELECTROOXIDATION; CATALYSTS; ELECTROCATALYST;
D O I：
10.1016/j.catcom.2011.06.018
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：
Au@Pt core-shell nanoparticles were synthesized by a simple one-step ultraviolet irradiation method and were then assembled on functionalized multiwalled carbon nanotubes (MWCNTs) surface. This new type of Au@Pt/MWCNTs composite catalysts was characterized by UV-vis spectrometry, X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), transmission electron microscopy (TEM), scanning TEM, HRTEM, and electrochemical techniques. The results revealed that the Au@Pt nanoparticles with an average diameter less than 5 nm were well coated on the MWCNTs surface. As compared with commercial Pt/C catalysts, the Au@Pt/MWCNTs prepared using Au/Pt atomic ratio of 1:1 exhibited distinctly higher activity and better stability toward methanol oxidation in alkaline media. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码：54 / 58
页数：5
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