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

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 HAuCl 4. The synergistic effect of Pd–Au bimetallic surfaces in Au-covered Pd nanowires has been demonstrated by cyclic...

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Bibliographic Details
Published in:Electrochimica acta 2010-02, Vol.55 (7), p.2295-2298
Main Authors: Cheng, Faliang, Dai, Xiangcheng, Wang, Hong, Jiang, San Ping, Zhang, Min, Xu, Changwei
Format: Article
Language:English
Subjects:
Aluminum oxide
Anodizing
Applied sciences
Bimetals
Chemistry
Electrochemistry
Electrodes
Electrodes: preparations and properties
Energy
Energy. Thermal use of fuels
Equipments for energy generation and conversion: thermal, electrical, mechanical energy, etc
Ethanol
Ethanol electrooxidation
Ethyl alcohol
Exact sciences and technology
Fuel cell
Fuel cells
General and physical chemistry
Nanowire arrays
Nanowires
Other electrodes
Palladium
Palladium–gold
Synergistic effect
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Summary: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 HAuCl 4. 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 s) 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.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2009.11.076