One-pot synthesis of reduced graphene oxide supported PtCuy catalysts with enhanced electro-catalytic activity for the methanol oxidation reaction
作者： Xinglan Peng , Yanchun Zhao , Duhong Chen , Yanfang Fan , Xiao Wang
DOI: 10.1016/J.ELECTACTA.2014.05.110
关键词:
摘要: Abstract The outstanding performance PtCu y (y = 1,2,3) alloy nanoparticles supported on reduced graphene oxide (rGO) have been synthesized by a facile, efficient, one-pot hydrothermal synthesis approach. as-prepared /rGO catalysts are comprehensively characterized X-ray diffraction, photoelectron spectroscopy, transmission electron microscopy. Cyclic voltammetry, CO-stripping voltammetry and chronoamperometry results reveal that the higher electro-catalytic activity, more negative onset oxidative potential, excellent tolerance ability for CO poisoning enhanced stability electro-oxidation of methanol compared to pure Pt/rGO. As far as as-made concerned, 2 exhibits highest activity. mechanism promoting effect Cu Pt is explained based electronic modification effect. nature interfacial interactions between Pt-Cu active metal phase rGO supporting materials crucial achieving high performance.
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