Facile synthesis of Pt nanoparticles supported on graphene/Vulcan XC-72 carbon and their application for methanol oxidation

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• 作者：Haili Gao ; Lilie He ; Yong Zhang ; Shengli Zhang ; Lizhen Wang
• 关键词：Graphene ; Methanol oxidation ; Carbon ; Catalyst ; Utilization
• 刊名：Ionics
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：23
• 期：2
• 页码：435-442
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Electrochemistry; Renewable and Green Energy; Optical and Electronic Materials; Condensed Matter Physics; Energy Storage;
• 出版者：Springer Berlin Heidelberg
• ISSN：1862-0760
• 卷排序：23

文摘

A facile method was used for the preparation of Pt nanoparticles supported on graphene/Vulcan XC-72 carbon (denoted as Pt/Gr-C) by co-reduction of graphene oxide (GO) and H₂PtCl₆ with subsequent incorporation of Vulcan XC-72 carbon between graphene. The catalyst is extensively characterized by using scanning electron microscope (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), and Raman spectroscopy. SEM and TEM observations show that aggregation of graphene is weakened through carbon insertion, which is beneficial for increase of effective contact area between catalyst and electrolyte. The electrochemical active surface area (ECSA) of Pt/Gr-C is higher than both Pt/C and Pt/Gr catalysts. The forward peak current density of Pt/Gr-C for methanol oxidation is 0.3 A mg−1 Pt, which is 1.4 and 1.7 times larger than Pt/Gr and Pt/C, respectively, due to the high utilization of Pt and large three-phase interface for methanol oxidation.