Issue 22, 2013
From the journal:

Journal of Materials Chemistry A

A facile method to synthesize supported Pd–Au nanoparticles using graphene oxide as the reductant and their extremely high electrocatalytic activity for the electrooxidation of methanol and ethanol†

Feihui Li,*a   Yongqin Guo,b   Ruqiang Li,b   Fei Wu,b   Yu Liu,b   Xiying Sun,b   Chuangbao Li,b   Wei Wangc  and  Jianping Gao*b  

* Corresponding authors

a Department of Applied Chemistry, School of Science, Tianjin University of Commerce, Tianjin 300134, P R China
E-mail: jianpingg@eyou.com, tjlifeihui@126.com
Fax: +86 22 274 034 75

b School of Science, Tianjin University, Tianjin 300072, P R China

c School of Chemical Engineering & Technology, Tianjin University, Tianjin 300072, P R China

Abstract

A facile and environmentally friendly method for preparing Pd–Au/reduced graphene oxide (RGO) hybrids with different Pd/Au ratios has been established. The method uses redox reactions between K2PdCl4, HAuCl4 and GO nanosheets and the subsequent thermal reduction of the material at 200 °C in a vacuum oven. Unlike previous methods for preparing metallic nanoparticles, GO nanosheets were used as the reducing agent, the stabilizing agent and the support for the metallic alloy nanoparticles. The composition and morphology of the Pd–Au/RGO were characterized by X-ray diffraction, thermo-gravimetric analysis, X-ray photoelectron spectroscopy and transmission electron microscopy. The composition of these Pd–Au/RGO catalysts can be adjusted so that the catalysts exhibit high activity for the electrooxidation of methanol and ethanol in alkaline media. Interestingly, Pd–Au/RGO shows better electrocatalytic activity and stability than Pd–RGO for the oxidation of methanol and ethanol. This indicates that these Pd–Au/RGO catalysts should have great potential applications in direct methanol and ethanol fuel cells.

Graphical abstract: A facile method to synthesize supported Pd–Au nanoparticles using graphene oxide as the reductant and their extremely high electrocatalytic activity for the electrooxidation of methanol and ethanol

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Article information

DOI
https://doi.org/10.1039/C3TA11139C
Article type
Paper
Submitted
20 Mar 2013
Accepted
05 Apr 2013
First published
05 Apr 2013

J. Mater. Chem. A, 2013,1, 6579-6587

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A facile method to synthesize supported Pd–Au nanoparticles using graphene oxide as the reductant and their extremely high electrocatalytic activity for the electrooxidation of methanol and ethanol

F. Li, Y. Guo, R. Li, F. Wu, Y. Liu, X. Sun, C. Li, W. Wang and J. Gao, J. Mater. Chem. A, 2013, 1, 6579 DOI: 10.1039/C3TA11139C

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