Codeposition of AuPd bimetallic nanoparticles on to ITO and their electrocatalytic properties for ethanol oxidation

Gold–palladium nanoparticles (AuPd NPs) were prepared on an indium tin oxide (ITO) surface by potentiostatic electrodeposition from a mixture of two metal salts. The bulk compositions of the prepared AuPd NPs were studied by means of energy-dispersive X-ray analysis (EDX) and X-ray diffraction (XRD)...

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Bibliographic Details
Published in:Electrochimica acta 2012-10, Vol.81, p.8-13
Main Authors: Tang, Jing, Tian, Xiao-Chun, Pang, Wen-Hui, Liu, Yue-Qiang, Lin, Jian-Hang
Format: Article
Language:English
Subjects:
Bimetallic nanoparticles
Chemistry
Deposition
Electrocatalysis
Electrochemistry
Electrodeposition
Ethanol
Ethyl alcohol
Exact sciences and technology
Field emission
General and physical chemistry
Indium tin oxide
ITO
Nanoparticles
Palladium
Study of interfaces
X-rays
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Summary:Gold–palladium nanoparticles (AuPd NPs) were prepared on an indium tin oxide (ITO) surface by potentiostatic electrodeposition from a mixture of two metal salts. The bulk compositions of the prepared AuPd NPs were studied by means of energy-dispersive X-ray analysis (EDX) and X-ray diffraction (XRD). The electrochemical behavior of the AuPd NPs in the sulfuric acid showed that the atomic ratio between Au and Pd could be adjusted by the composition of electrolyte and the applied potential. Field emission scanning electron microscopy (FE-SEM) images of the electrodeposits show that the morphology of the AuPd NPs was affected by the electrochemical deposition potential and deposition period. In addition, the AuPd NPs displayed good electro-catalytic activity for ethanol electro-oxidation in alkaline solution.
ISSN:0013-4686
1873-3859
DOI:10.1016/j.electacta.2012.07.048