Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 1, Issue 24, Pages 7255-7261Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta11291h
Keywords
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Funding
- National Natural Science Foundation of China [51073114, 20933007, 51073074, 50963002]
- Opening Project of Xinjiang Key Laboratory of Electronic Information Materials and Devices [XJYS0901-2010-01]
- Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD)
- Academic Award for Young Graduate Scholar of Soochow University
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In this paper, we report a facile, eco-friendly, one-pot method for the synthesis of a reduced graphene oxide (RGO) supported PtAuRu alloy nanoparticle catalyst (PtAuRu/RGO) by simultaneous reduction of H2PtCl6, HAuCl4, RuCl3 and graphene oxide (GO) using ethanol as the reduction agent. The as-formed PtAuRu/RGO catalyst has been characterized by X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), transmission electron microscopy (TEM), Raman spectroscopy, X-ray photoelectron spectroscopy (XPS), and induced coupled plasma-atomic emission spectroscopy (ICP-AES). It is found that the PtAuRu nanoparticles formed alloy structures about 3.09 +/- 0.73 nm in diameter and are evenly distributed on the RGO surface. The reduction degree of GO together with metal precursors is higher than that of only GO. Moreover, electrochemical measurements reveal that the electrocatalytic activity and stability of the PtAuRu/RGO catalyst for the methanol oxidation reaction are superior to those of PtAu/RGO, PtRu/RGO and Pt/RGO catalysts. These findings suggest that the prepared PtAuRu/RGO catalyst has great potential for use in direct methanol fuel cells (DMFCs).
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