Method for synthesizing titanium dioxide/graphene nano composite material

The invention relates to a method for synthesizing a titanium dioxide/graphene nano composite material. The method comprises the following steps: (1) determining surface electrical properties of titanium dioxide (TiO2); (2) determining a TiO2/graphene oxide modification procedure according to the TiO2 surface electrical properties; (3) carrying out static self-assembling on TiO2 and graphene oxide to form the titanium dioxide/graphene nano composite material; (4) carrying out ultraviolet irradiation on a TiO2/graphene oxide solution under stirring and N2 aeration conditions; (5) washing the sample subjected to the ultraviolet irradiation and lyophilizing; and (6) carrying out microwave irradiation on the lyophilized sample to obtain the TiO2/graphene nano composite material. The TiO2/graphene nano composite material prepared by the method can keep the original shape of the material very well and has relatively good dispersity; and graphene oxide can also be reduced to a certain extent, so that the performance