Method for preparing magnetic graphene-based titanium dioxide composite

A method for preparing a magnetic graphene-based titanium dioxide composite includes: first, synthesizing a magnetic graphene composite modified with Fe3O4 nano microspheres of different sizes by means of a solvothermal method; second, mechanically stirring magnetic graphene and tetrabutyl titanate as raw materials to synthesize the magnetic graphene-based titanium dioxide composite.The invention has the advantages that the method is simple, and the process is reasonable and easy to implement; the prepared magnetic graphene-based titanium dioxide composite has good catalytic performance when applied to photo-catalytic dyes; the method integrates characteristics of magnetic graphene and characteristics of titanium dioxide nanoparticles, showing good performances such as adsorption, electron transfer, photocatalysis and separation easiness, and the method for preparing the magnetic graphene-based titanium dioxide composite is provided such that the applicable range of magnetic graphene materials in the field of photocatalysis is widened.