Critical Size Range of Sub-Nanometer Au Clusters for the Catalytic Activity in the Hydrogen Oxidation Reaction

被引：13

作者：

Buceta, D. ^{[1
,2
,3
]}

Blanco, M. C. ^{[1
,2
]}

Lopez-Quintela, M. A. ^{[1
,2
]}

Vukmirovic, M. B. ^{[3
]}

机构：

[1] Univ Santiago de Compostela, Fac Chem, Dept Phys Chem, E-15782 Santiago De Compostela, Spain

[2] Univ Santiago de Compostela, IIT, Nanomag Lab, E-15782 Santiago De Compostela, Spain

[3] Brookhaven Natl Lab, Dept Chem, Upton, NY 11973 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2014年 / 161卷 / 07期

关键词：

GOLD CLUSTERS; ELECTROCATALYSIS; DISSOCIATION; ELECTRODES; MECHANISM; ACID;

D O I：

10.1149/2.016407jes

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Au clusters (25 atoms) are up to 180 times more active for the hydrogen oxidation reaction (HOR) than bulk Au. They were created from catalytically inactive Au clusters (2-5 atoms) by electrochemical activation in the presence of Au ions. The HOR activity depends on the cluster's size and it is related to the fact that the position of the LUMO is below the redox potential for the HOR, while HOMO is below the H 1s-Au d antibonding resonance. (C) 2014 The Electrochemical Society. All rights reserved.

引用

页码：D3113 / D3115

页数：3

共 25 条

[1]

Ashcroft N.W., 1976, SOLID STATE PHYS, P38

[2] High catalytic activity of chemically activated gold electrodes towards electro-oxidation of methanol [J].