▎ 摘　　要

NOVELTY - N-hetero three-dimensional foam graphene titanium oxide (TiO2) microbial fuel cell electrode material includes three-dimensional foamed graphene layered structure. The three-dimensional foamed graphene layered structure is loaded with TiO2 microspheres. The N-element is pyridine nitrogen, pyrrole nitrogen and/or graphite nitrogen doped on the three-dimensional foam graphene layered structure. USE - N-hybrid three-dimensional foam graphene-titanium dioxide microbial fuel cell electrode material used as the cathode of the microbial fuel cell, used for the conduction of the microbial fuel cell, accepts the electrons generated by the anode microorganisms and catalyzes the degradation of the azo dye in the cathode pool (Claimed). ADVANTAGE - The N-hybrid three-dimensional foam graphene-titanium dioxide microbial fuel cell electrode material has excellent conductivity, catalytic activity and stability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a preparation method of the microbial fuel cell electrode material, which involves: (A) coating a layer of N-heterographene material with carbon on the foamed nickel substrate by hydrothermal method, and doping N atoms on the foamed graphene to delocalize the graphene pi-conjugated electrons, and obtaining the N-hetero three-dimensional foam graphene precursor; (B) pickling and etching the N-doped three-dimensional foamed graphene precursor to remove the foamed nickel substrate inside the N-doped three-dimensional foamed graphene precursor; and (C) coating the prepared TiO2 microspheres on the surface of the foamed graphene with polytetrafluoroethylene, so that the TiO2 nanospheres are used as electrocatalytic active sites, and obtaining N hetero three-dimensional foamed graphene TiO2 microbial fuel cell electrode material.