▎ 摘　　要

NOVELTY - Controlling crystal form and shape of titanium dioxide on surface of multilayer graphene involves: preparing titanium dioxide/multilayer graphene composite material by (S1) pouring dimethylformamide and distilled water into a glass bottle, adding expanded graphite, and ultrasonically treating to obtain multilayer graphene mixed solution, (S2) taking the multilayer graphene mixed solution as reference, measuring 360 muL titanium trichloride solution and concentrated hydrochloric acid solution, and stirring, (S3) dripping dilute nitric acid solution into the reaction solution prepared in step (S2), and continuously stirring, (S4) taking out the reaction solution obtained in step (S3), cooling, and centrifugally cleaning, and (S5) drying the cleaned sample; and controlling the crystal form and shape of titanium dioxide by adding different amounts of concentrated hydrochloric acid to obtain different crystal structures of titanium dioxide and shape of rutile titanium dioxide. USE - The method is useful for controlling crystal form and shape of titanium dioxide on surface of multilayer graphene, which is useful in lithium battery cathode, photocatalysis and solar battery. ADVANTAGE - The method is simple and convenient for industrial production, and only changes the reaction amount of hydrochloric acid to prepare titanium dioxide/multilayer graphene crystal form and shape of composite nanomaterial. DETAILED DESCRIPTION - Controlling crystal form and shape of titanium dioxide on surface of multilayer graphene involves: preparing titanium dioxide/multilayer graphene composite material by (S1) measuring 4 mL dimethylformamide and 1 mL distilled water, pouring into a glass bottle, taking mixed solution as reference, adding 20 mg expanded graphite, leaving still, and ultrasonically treating to obtain multilayer graphene mixed solution, (S2) taking the multilayer graphene mixed solution as reference, measuring 360 muL titanium trichloride solution and 36% concentrated hydrochloric acid solution, and placing the solution in a constant temperature water bath for constant temperature stirring, (S3) dripping 130 muL 10% dilute nitric acid solution into the reaction solution prepared in step (S2), and continuously stirring under the same conditions, (S4) taking out the reaction solution obtained in step (S3), cooling to room temperature, and centrifugally cleaning with distilled water and alcohol, and (S5) drying the cleaned sample in a drying oven; and controlling the crystal form and shape of titanium dioxide by adding different amounts of concentrated hydrochloric acid to obtain different crystal structures of titanium dioxide and shape of rutile titanium dioxide.