▎ 摘　　要

NOVELTY - Preparing flexible graphene/titanium dioxide/iron oxide composite material comprises (i) preparing uniform composite flexible ink solution; (ii) preparing oxidized graphene powder; (iii) uniformly mixing iron salts, alkali, alcohol and organic solvents, to obtain a mixed solution, dispersing oxidized graphene powder nano-particles in the mixed solution and stirring evenly; and (iv) transferring the step (iii) product into a reaction vessel, carrying out sealed reaction, then cooling to room temperature, isolating white precipitate, washing and sintering, to obtain the final product. USE - The composite material is useful for electrode material, photocatalysis, solar cracking water and solar battery. ADVANTAGE - The composite material is economical, simple and safe; has good compatibility, uniform structure, long service life, electrochemical property and wide application. DETAILED DESCRIPTION - Preparing flexible graphene/titanium dioxide/iron oxide composite material comprises (i) uniformly mixing graphene solution with a solution containing small molecules or organic polymers having special functional groups under inert gas protection, subjecting to repeated ultrasonic treatment and stirring, to obtain a uniform composite flexible ink solution; (ii) cooling the oxidized graphite, diluting, subjecting to ultrasonic stripping, centrifuging, to obtain solution stability in the dispersion of graphene oxide, filtering, and drying, to obtain oxidized graphene powder; (iii) uniformly mixing iron salts, alkali, alcohol and organic solvents, to obtain a mixed solution, dispersing oxidized graphene powder nano-particles in the mixed solution and stirring evenly; and (iv) transferring the step (iii) product into a reaction vessel, carrying out sealed reaction, then cooling to room temperature, isolating white precipitate, washing and sintering, to obtain the final product.