Catalytic performance of Pt nanoparticles on reduced graphene oxide for methanol electro-oxidation

被引：880

作者：

Li, Yongjie ^{[1
,2
]}

Gao, Wei ^{[2
]}

Ci, Lijie ^{[2
]}

Wang, Chunming ^{[1
]}

Ajayan, Pulickel M. ^{[2
]}

机构：

[1] Lanzhou Univ, Dept Chem, Lanzhou 730000, Peoples R China

[2] Rice Univ, Dept Mech Engn & Mat Sci, Houston, TX 77005 USA

来源：

CARBON | 2010年 / 48卷 / 04期

基金：

中国国家自然科学基金;

关键词：

WALLED CARBON NANOTUBES; FUEL-CELLS; ELECTROCATALYTIC ACTIVITY; PLATINUM NANOPARTICLES; GRAPHITE OXIDE; OXIDATION; SHEETS; RU; FILMS; NANOSHEETS;

D O I：

10.1016/j.carbon.2009.11.034

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：

We have investigated a simple approach for the deposition of platinum (Pt) nanoparticles onto surfaces of graphite oxide (GO) nanosheets with particle size in the range of 1-5 nm by ethylene glycol reduction. During Pt deposition, a majority of oxygenated functional groups on GO was removed, which resulted in a Pt/chemically converted graphene (Pt/CCG) hybrid. The electrochemically active surface areas of Pt/CCG and a comparative sample of Pt/multi-walled carbon nanotubes (Pt/MWCNT) are 36.27 and 33.43 m(2)/g, respectively. The Pt/CCG hybrid shows better tolerance to CO for electro-oxidation of methanol compared to the Pt/MWCNT catalyst. Our study demonstrates that CCG can be an alternative two-dimensional support for Pt in direct methanol fuel cells. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：1124 / 1130

页数：7

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