Preparation of Pt/Au/Fe<sub>3</sub>O<sub>4</sub> nanocomposites and their electrocatalytic activities in methanol oxidation

HONG Chun-yan; LI Min; LIU Jia-xiang

Volume 41 Issue 09

Sep. 2013

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HONG Chun-yan, LI Min, LIU Jia-xiang. Preparation of Pt/Au/Fe3O4 nanocomposites and their electrocatalytic activities in methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1108-1114.

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HONG Chun-yan, LI Min, LIU Jia-xiang. Preparation of Pt/Au/Fe₃O₄ nanocomposites and their electrocatalytic activities in methanol oxidation[J]. Journal of Fuel Chemistry and Technology, 2013, 41(09): 1108-1114.

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Preparation of Pt/Au/Fe₃O₄ nanocomposites and their electrocatalytic activities in methanol oxidation

College of Materials Science and Engineering, the Laboratory of Electrochemical Process and Technology for Materials, Beijing University of Chemical Technology, Beijing 100029, China

Received Date: 2012-12-23
Rev Recd Date: 2013-04-11
Publish Date: 2013-09-30

Abstract

Abstract

Pt/Au/Fe₃O₄ nanocomposites were prepared by the continuous reduction method, through loading Pt and Au on the surface of nano Fe₃O₄. The Pt/Au/Fe₃O₄ nanocomposites were characterized by UV-vis spectra, transmission electron microscopy (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectrometer (XPS); their electrocatalytic activities in methanol oxidation were investigated. The results indicated that Au and Pt are uniformly deposited on Fe₃O₄ surface. The cyclic voltammograms of Pt/Au/Fe₃O₄ suggests that the best catalytic performance is achieved when the amount of H₂PtCl₆ added is 8 mL. Current peak i_p is proportional to the square root of scanning speed (v^1/2) and the catalytic methanol oxidation process is under the control of diffusion. The Pt/Au/Fe₃O₄ nanocomposites remain high active during the measurements of cyclic voltammograms for 201 times, suggesting that Pt/Au/Fe₃O₄ is a kind of anode catalyst materials with high chemical activity and stability.
- Pt/Au/Fe₃O₄,
- anode catalyst,
- methanol catalyst,
- electrochemical performance

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References(14)

References

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