▎ 摘　　要

Graphene sheets are modified by self-assembly of phosphomolybdic acid followed by in situ formation of polyaniline (PANI-HPMo-GS) to uniformly deposit small nanoparticles of Pt catalyst (similar to 3 nm) by interaction between PANI and PtCl62-. The Pt/PANI-HPMo-GS material exhibits significantly enhanced electrocatalytic activity (322 mA mg(-1) Pt) and high stability (voltage degradation rate of 60 mV h(-1) at a constant load of 4 mA cm(-2) and peak current reduces by 22.7% after 100 voltammetry cycles) for methanol oxidation. This self-assembly strategy can be readily extended to the fabrication of other carbon based hybrid supports for precious metal catalysts for various applications.