Bimetallic Palladium-Gold Nanostructures: Application in Ethanol Oxidation

被引：183

作者：

Ksar, Faycal ^{[1
]}

Ramos, Laurence ^{[2
]}

Keita, Bineta ^{[1
]}

Nadjo, Louis ^{[1
]}

Beaunier, Patricia ^{[3
]}

Remita, Hynd ^{[1
]}

机构：

[1] Univ Paris 11, CNRS, UMR 8000, Chim Phys Lab, F-91405 Orsay, France

[2] Univ Montpellier 2, CNRS, UMR 5587, Lab Colloides Verres & Nanomat, F-34095 Montpellier 05, France

[3] Univ Paris 06, CNRS, UMR 7197, Lab React Surface, F-75252 Paris 05, France

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 15期

关键词：

PLATINUM NANOPARTICLES; ELECTROCATALYTIC OXIDATION; SELECTIVE HYDROGENATION; COUPLING REACTIONS; PD; ELECTROOXIDATION; CLUSTERS; NANOWIRES; CATALYSTS; AU;

D O I：

10.1021/cm901364w

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：

Bimetallic Pd-Au nanostructures were synthesized in the soft templates provided by surfactant hexagonal mesophases. The nanostructures are constituted by a core rich in gold and a Pd porous shelf. The electrocatalytic activity of these nanostructures for ethanol oxidation in basic medium was compared with that of alloyed Pd-Au nanoparticles synthesized in solution. The Pd-Au alloy is active toward the oxidation of ethanol in an alkaline medium but is not durable in realizing this process. The Pd-shell-Au-core nanostructures synthesized in mesophases are promising for application in direct ethanol fuel cells as they exhibit a very good electrocatalytic activity and a high stability.

引用

页码：3677 / 3683

页数：7

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