Carbon-supported Pt nanoparticles prepared by a modified borohydride reduction method: Effect on the particle morphology and catalytic activity for COad and methanol electro-oxidation

被引：22

作者：

Lee, Eungje ^{[1
]}

Murthy, Arun ^{[1
]}

Manthiram, Arumugam ^{[1
]}

机构：

[1] Univ Texas Austin, Electrochem Energy Lab, Mat Sci & Engn Program, Austin, TX 78712 USA

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2011年 / 13卷 / 05期

关键词：

Nanoparticle; Platinum catalyst; CO oxidation; Methanol oxidation; Fuel cell; FUEL-CELL; ELECTROCATALYST; PERFORMANCE; PLATINUM;

D O I：

10.1016/j.elecom.2011.02.026

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Carbon-supported Pt nanoparticles have been prepared by a borohydride reduction method in a mixed water-ethylene glycol (EG) solvent with different EG content X-EG. The synthesis in the mixed solvent modifies (1) the size and morphology of nanoparticles and (2) the intrinsic properties of the nanoparticle surface, which are manifested in an additional COad oxidation peak at a lower potential. Because of the combined effects of these morphological and intrinsic modifications, the Pt nanoparticles prepared in the mixed solvent with X-EG = 0.67 exhibit 2.5 times higher catalytic activity for methanol oxidation reaction. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：480 / 483

页数：4

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