▎ 摘　　要

NOVELTY - Graphene composite includes more than one metal oxide including functionalized iron(II,III) oxide in the hollow graphene oxide spheres and titanium dioxide. USE - The graphene composite is useful for water treatment (claimed). ADVANTAGE - The graphene composite has high specific surface area, improved mechanical strength, and excellent optical permeability. DETAILED DESCRIPTION - An INDEPENDNET CLAIM is included for the preparation of graphene composite, comprising (a) preparing a solution of titanium dioxide by sol-gel method, (b) preparing a solution of one or more metal oxides including iron(II,III) oxide, (c) attaching graphene oxide to the polystyrene surface, (d) preparing a hollow graphene oxide sphere by removing the polystyrene, and (e) preparing phase of hollow graphene oxide spheres.