Journal
ELECTROCHIMICA ACTA
Volume 60, Issue -, Pages 329-333Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2011.11.068
Keywords
Undoped nanodiamond; Microwave; Platinum; Ruthenium; Electrocatalyst
Categories
Funding
- National Natural Science Foundation of China [50872119, 50972125]
- Natural Science Foundation of Hebei Province [E2010001187, E2011203126]
- China Postdoctoral Science Foundation [20100480197]
- Element Six Co.
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Undoped nanodiamond (ND) supported PtRu (PtRu/ND) electrocatalyst was prepared by a microwave heating polyol method. The alloy structures, morphology and composition of the PtRu/ND catalyst were characterized by X-ray diffraction, high-resolution transmission electron microscopy and energy-dispersive spectroscopy. The electrocatalytic activities of the PtRu/ND catalyst for methanol oxidation were also investigated by cyclic voltammetry and chronoamperometry. It was found that Ru was partly dissolved in the face-centered cubic Pt lattice. The PtRu nanoparticles were small and uniform with the size of 2-4 nm, and highly dispersed on ND supports. The electrochemical measurements demonstrated that PtRu/ND catalyst exhibited higher activity and stability for methanol electrooxidation reaction than Pt/ND catalyst. (C) 2011 Elsevier Ltd. All rights reserved.
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