▎ 摘　　要

NOVELTY - A composite material is prepared by using graphene oxide and tetrabutyl titanate as raw materials, reducing graphene oxide to graphene by one-step hydrothermal method, and growing titanium element in tetrabutyl titanate on both sides of the graphene sheet in the form of amorphous titanium dioxide nanorods under the action of hydrothermal process. The length and width of the graphene sheet layer in the composite material are 1-8 mu m. The length of the amorphous titanium dioxide nanorods is 300-500 nm. USE - Composite material used in electromagnetic wave absorption application as wave absorbing and electromagnetic shielding material (claimed). ADVANTAGE - The composite material can effectively absorb electromagnetic waves. By adjusting the thickness of the composite material, the absorption frequency band can cover the Ku-band (2-2.5 mm), X-band (2.5-3.5 mm) and most of the C-band (3.5-5.5 mm) of the radar band. The preparation process is simple, easy, and suitable for large-scale industrial production. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the graphene/amorphous titanium dioxide nanorod composite material, which involves (1) dispersing graphene oxide uniformly in solvent absolute ethanol, ultrasonically processing, (2) adding glycerol and tetrabutyl titanate in drops, using glycerol as shape control agent, ultrasonically processing, placing the mixed solution in the reactor for hydrothermal reaction at 180 degrees C for 15 hours, performing alcohol suction filtration and freeze-drying. The graphene/amorphous titanium dioxide nanorod composite materials with different composite densities can be obtained by changing the adding ratio of graphene oxide to tetrabutyl titanate. The mass ratio of the titanium element in the graphene oxide to the tetrabutyl titanate is 0.1-10:1.