Abstract
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.
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Acknowledgments
We would like to thank the National Natural Science Foundation of China (No. U1404201), Program for Technology Innovation Team in Universities of Henan Province, China (No. 16IRTSTHN016), Foundation for Young Core Teacher by Zhengzhou University of Light Industry (No. 2013XGGJS007), and the Graduate’s Scientific Research Foundation of Zhengzhou University of Light Industry (No. 2015002) for the financial support of this work.
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Gao, H., He, L., Zhang, Y. et al. Facile synthesis of Pt nanoparticles supported on graphene/Vulcan XC-72 carbon and their application for methanol oxidation. Ionics 23, 435–442 (2017). https://doi.org/10.1007/s11581-016-1861-4
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DOI: https://doi.org/10.1007/s11581-016-1861-4