Ultralong PtPd Alloyed Nanowires Anchored on Graphene for Efficient Methanol Oxidation Reaction |
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| Authors: | Ling Shen Dr Jie Ying Dr Ge Tian Mingpu Jia Prof Dr Xiao-Yu Yang |
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| Institution: | 1. State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & International School of Materials Science and Engineering, Wuhan University of Technology, 122, Luoshi Road, Wuhan, 430070 P. R. China;2. School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai, 519082 P. R. China |
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| Abstract: | The rational synthesis of Pt-based alloyed nanowires still remains a great challenge because of the different reduction potentials between Pt and another metal and the intrinsic feature of isotropic growth in face-centered cubic (fcc) structured Pt. In this work, PtPd alloyed nanowires with ultrahigh aspect ratio anchored on graphene (PtPd NWs/graphene) were synthesized by a facile solvothermal method without the use of any templates or surfactants. Due to the integration of ultralong PtPd nanowires and stable graphene support, PtPd NWs/graphene exhibited outstanding electrochemical activity toward methanol oxidation reaction (MOR) in comparison with pure Pt NWs/graphene and commercial Pt/C catalysts. Meanwhile, PtPd NWs/graphene had a much higher current density than Pt NWs/graphene and commercial Pt/C catalysts at a constant potential for 7200s in alkaline methanol solution. Moreover, after 1000 cycles of durability testing, PtPd NWs/graphene retained 89.2% of its initial mass activity, much superior to the 63.7% retained for commercial Pt/C. |
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| Keywords: | PtPd alloys Nanowires Graphene Methanol oxidation reaction |
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