▎ 摘　　要

Nitrogen-doped reduced graphene oxide materials (N-RGO) derived from pyrolysis of graphene oxide (GO)/polyaniline composites were used as a support for the immobilization of Pt nanoparticles. The morphologies and structures of N-RGO and Pt/N-RGO were comprehensively characterized by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), and Raman spectroscopy. The electrocatalytic activities of the as-prepared catalysts for CO stripping and methanol oxidation were investigated by cyclic voltammetry and chronoamperometry. The results showed that GO was reduced to multilayer graphene by thermal annealing accompanied with successful incorporation of N atoms into RGO. Moreover, the presence of the doped N atoms enhanced the surface defects and electrical conductivity of the RGO materials. Pt nanoparticles on N-RGO were more evenly dispersed, had better CO tolerance, and had higher activity/stability for methanol oxidation than those on RGO without N doping.