▎ 摘　　要

NOVELTY - Preparing functionalized graphene material, comprises e.g. preparing a graphene oxide solution and a reducing agent solution, uniformly mixing graphene oxide solution and a reducing agent solution in proportion to form a mixed solution, bringing the mixed solution into contact with the surface of a substrate provided with multiple through holes, so that the contact between the mixed solution and the surface of the substrate forms a gas-liquid interface, heating the mixed solution while the substrate and the mixed solution are in a static state, so that a self-assembled layer of graphene attached to the substrate is formed at the gas-liquid interface, taking the substrate and the graphene self-assembled layer attached to the substrate out of the mixed solution, immersing in the doping treatment solution for doping treatment, taking out substrate and the graphene self-assembly layer attached to the substrate of the doping treatment solution, and subjecting to natural drying treatment. USE - The method is useful for preparing functionalized graphene material. DETAILED DESCRIPTION - Preparing functionalized graphene material, comprises e.g. preparing a graphene oxide solution and a reducing agent solution, uniformly mixing graphene oxide solution and a reducing agent solution in proportion to form a mixed solution, bringing the mixed solution into contact with the surface of a substrate provided with multiple through holes, so that the contact between mixed solution and the surface of the substrate forms a gas-liquid interface, heating the mixed solution while the substrate and the mixed solution are in a static state, so that a self-assembled layer of graphene attached to the substrate is formed at the gas-liquid interface, taking the substrate and the graphene self-assembled layer attached to the substrate out of the mixed solution, immersing in the doping treatment solution for doping treatment, taking out substrate and the graphene self-assembly layer attached to the substrate of the doping treatment solution, and subjecting to natural drying treatment to obtain a functionalized graphene composite film, or performing freeze-drying treatment. An INDEPENDENT CLAIM is also included for preparing functionalized graphene material by performing the above-mentioned method.