▎ 摘　　要

NOVELTY - Preparation of graphene/porous titanium dioxide photocatalyst involves mixing titanium salt, organic ligand and organic solvent to obtain a mixed solution, ultrasonically dispersing the mixed solution with graphene to obtain a reaction liquid, subjecting the reaction liquid to a hydrothermal reaction to obtain a titanium-MOF/ graphene precursor, and calcining titanium-MOF/graphene precursor in an argon atmosphere. The molar ratio of the titanium salt, organic ligand and organic solvent is 1:(1-8):(550-1050). USE - Preparation of graphene/porous titanium dioxide photocatalyst for oxidation of volatile organic compounds (VOCs) (all claimed). ADVANTAGE - The titanium MOF is riveted on the two-dimensional surface of the graphene, thus achieving strong force. The composite material is obtained by calcination, thus realizing high dispersion of the porous titanium dioxide. The porous titanium dioxide is closely embedded on both sides of graphene and is formed in a sandwich-like structure, thus preventing uneven dispersion and easy agglomeration of titanium dioxide. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a graphene/porous titanium dioxide photocatalyst having specific surface area of 250-500 m2/g. The porous titanium dioxide comprises hollow structure and is riveted on both sides of the plane of the graphene.