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

页码：54 / 58

页数：5

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