▎ 摘　　要

Due to its large specific surface area and extraordinary carrier mobility, graphene has been widely used as the supporting material for metal particles in catalysis. A platinum-based catalyst with a graphene-based porous matrix as the supporting material was prepared by one-step hydrothermal synthesis, which produces a uniform distribution of platinum nanoparticles on the support. This catalyst material shows excellent antipoison ability and superior electrocatalytic stability for the methanol oxidation reaction. It was also found that further annealing treatment could modify the morphology of platinum particles attached to the graphene, and an appropriate annealing temperature contributed to an improvement of its electrocatalytic activity.