Oxygen Electroreduction Catalyzed by Gold Nanoclusters: Strong Core Size Effects

被引：472

作者：

Chen, Wei ^{[1
]}

Chen, Shaowei ^{[1
]}

机构：

[1] Univ Calif Santa Cruz, Dept Chem & Biochem, Santa Cruz, CA 95064 USA

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2009年 / 48卷 / 24期

基金：

美国国家科学基金会;

关键词：

electrocatalysis; gold; nanoparticles; oxygen reduction; voltammetry; FEPT ALLOY NANOPARTICLES; MASS-SPECTROMETRY; ELECTROCATALYTIC REDUCTION; CARBON-MONOXIDE; FORMIC-ACID; REACTIVITY; CLUSTERS; AU; ELECTROOXIDATION; OXIDATION;

D O I：

10.1002/anie.200901185

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Bigger isn't better: Gold nanoclusters exhibit enhanced electrocatalytic activity in oxygen reduction when the core size decreased from Au140 to Au11, as reflected by the onset potential Eonset and peak current density JK (see picture). The increasing fraction of surface atoms with low coordination numbers and the shift of the d-band center to the Fermi level facilitate oxygen adsorption. © 2009 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

页码：4386 / 4389

页数：4

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