▎ 摘　　要

NOVELTY - Graphene-molybdenum/copper nano-particle composite material comprises a graphite layer located on a polished glassy carbon electrode or surface treated dry pure titanium sheet to form a 3-D structure of irregular multi-level overlapped graphene sheet layers, where each graphene sheet has different size, and the overlapped graphene sheet layers have different orientations, and a part of the overlapped graphene sheet layers is tilted. The molybdenum and copper alloy nano-particle forms a thin film layer on the graphene sheet. USE - The composite material is useful for modifying electrode in electro-catalytic oxidation of methanol (claimed). ADVANTAGE - The method is simple, and easy to operate, and environmental friendly. The electrode modified with the prepared multi-level graphene platinum/copper nano-particle exhibits good performance during the electro-catalytic oxidation of methanol. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the composite material, comprising performing electrodeposition of alloy nano-particle of graphene, molybdenum and copper on the composite material by using cyclic voltammetry, where the electrodeposition process includes (a) passing voltage into an electrodeposition solution in order to achieve the reduction potential of molybdenum and copper to obtain the deposition of molybdenum and copper alloy nano-particle, where the level of the molybdenum and copper continuously change the reduction potential of graphene oxide so that the graphene oxide reduces on the surface of an electrode, and (b) allowing the deposition on the electrode surface through cyclic manner, so that the metal nano-particles and reduced graphene oxide are simultaneously deposited on the surface of the electrode, then repeating the deposition process for many cycles to obtain the composite material, where the electrodeposition solution is a mixed solution of graphene oxide, molybdenum and copper.