Novel honeycomb nanosphere Au@Pt bimetallic nanostructure as a high performance electrocatalyst for methanol and formic acid oxidation

被引：36

作者：

Guo, Zhenguo ^{[1
]}

Zhang, Xin ^{[1
]}

Sun, Hui ^{[1
]}

Dai, Xiaoping ^{[1
]}

Yang, Ying ^{[1
]}

Li, Xinsong ^{[1
]}

Meng, Tingting ^{[1
]}

机构：

[1] China Univ Petr, Dept Chem Engn, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2014年 / 134卷

基金：

中国国家自然科学基金;

关键词：

Honeycomb nanosphere; Au@Pt; High performance electrocatalyst; Methanol and formic acid oxidation; EFFICIENT CATALYSTS; ALLOY NANOPARTICLES; CONCAVE NANOCUBES; PLATINUM; NANOCRYSTALS; NANOWIRES; SHELL; CORE; FACETS;

D O I：

10.1016/j.electacta.2014.04.088

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel honeycomb nanosphere bimetallic catalyst with a diameter of 27.5 +/- 1.8 nm was formed by the self-assembly of the ultrafine irregular cubic Au@Pt nanoparticles (4.6 +/- 0.5 nm). The vital role of CAB in the formation of the honeycomb nanosphere was discussed. The specific (mass) activity of this catalyst is ca. 2.5 (1.6) times that of Pt black for methanol electrooxidation and 3.2 (2.3) times that of Pt black for formic acid electrooxidation. The excellent electrochemistry performance may be attributed to the electronic interaction between Au and Pt and the unique structure of the honeycomb nanosphere. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：411 / 417

页数：7

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