▎ 摘　　要

In the present work, the use of a pretreated graphene as a support for electrocatalyst is presented. To confirm the role of pretreatment, the properties of Pt/graphene (Pt/G) was compared with Pt/pretreated graphene (Pt/PANI-G). Two electrocatalysts were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS), and its electrochemical properties were studied by cyclic voltammograms (CVs), electrochemical impedance spectroscopy (EIS), and chronoamperometry (CA) using three-electrode system. The results indicate that activity of Pt/PG (55.6 mA mg(-1)) is much four times higher than that of Pt/G (13.95 mA mg(-1)) catalyst at 10 mv s(-1) in 0.5 M H2SO4 + 2.0 M CH3OH, and Pt/PG have better long-term stability than Pt/G for methanol oxidation.