Synergistic effect of Pd-Au bimetallic surfaces in Au-covered Pd nanowires studied for ethanol oxidation

被引：84

作者：

Cheng, Faliang ^{[1
]}

Dai, Xiangcheng ^{[1
]}

Wang, Hong ^{[1
]}

Jiang, San Ping ^{[2
]}

Zhang, Min ^{[1
]}

Xu, Changwei ^{[3
]}

机构：

[1] Dongguan Univ Technol, Dongguan 523106, Peoples R China

[2] Nanyang Technol Univ, Sch Mech & Aerosp Engn, Singapore 639798, Singapore

[3] Guangzhou Univ, Sch Chem & Chem Engn, Guangzhou 510006, Guangdong, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 07期

关键词：

Fuel cell; Ethanol electrooxidation; Nanowire arrays; Palladium-gold; Synergistic effect; FORMIC-ACID OXIDATION; METHANOL FUEL-CELLS; ALKALINE MEDIA; ELECTROOXIDATION; CATALYSTS; ELECTROCATALYSTS; NANOPARTICLES; PERFORMANCE; PH;

D O I：

10.1016/j.electacta.2009.11.076

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Highly ordered PdAu nanowire arrays (NWAs) have been successfully prepared by the combination of anodized aluminum oxide (AAO) template-electrodeposition and Pd NWAs reacting with HAuCl4. The synergistic effect of Pd-Au bimetallic surfaces in Au-covered Pd nanowires has been demonstrated by cyclic voltammogram (CV) because the onset potential (E,) of ethanol oxidation on the PdAu NWAs electrode is 123 mV more negative compared with that on the Pd NWAs electrode. The PdAu NWAs shows higher activity and better poisoning-resistance behavior than the Pd NWAs for ethanol electrooxidation. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2295 / 2298

页数：4

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