▎ 摘　　要

NOVELTY - The preparation of graphene modified titanium dioxide film nano composite structure involves cleaning fluorine-doped tin oxide (FTO) conductive glass, drying, mixing deionized water and concentrated hydrochloric acid, dripping butyl titanate, reacting, taking out FTO conductive glass, obtaining titanium dioxide nanorod array, using spin coating on array loaded with graphene to obtain graphene-titanium dioxide film composite, dissolving graphene in absolute ethanol to obtain graphene dispersion, spin coating graphene dispersion on surface of nanorod array, washing and drying. USE - Preparation of graphene modified titanium dioxide film nano composite structure used for photocatalytic degradation of organic pollutant (claimed). ADVANTAGE - The method enables preparation of graphene modified titanium dioxide film nano composite structure with strong absorption of light, excellent photocatalytic properties and wide application prospect by simple and environmentally-friendly process. DETAILED DESCRIPTION - The preparation of graphene modified titanium dioxide film nano composite structure involves ultrasonically cleaning fluorine-doped tin oxide (FTO) conductive glass with acetone, anhydrous ethanol and deionized water for 20-30 minutes, drying, mixing deionized water and concentrated hydrochloric acid in volume ratio of 1:1, stirring, dripping butyl titanate, pouring mixture into 100 ml high pressure autoclave containing FTO conductive glass, reacting at 140-160 degrees C for 15-20 hours, taking out and washing with tap water at room temperature, taking out FTO conductive glass with titanium dioxide nanorod array, washing with deionized water several times, naturally drying product to obtain titanium dioxide nanorod array, using spin coating on titanium dioxide nanorod array loaded with graphene to obtain graphene-titanium dioxide film composite, dissolving graphene in absolute ethanol, ultrasonically stirring for 60 minutes to obtain graphene dispersion, spin coating graphene dispersion on the surface of titanium dioxide nanorod array by homogenizer at low speed, drying in oven, washing with deionized water 3 times, and naturally drying. The volume ratio of butyl titanate and mixed solution is (0.5-0.8):50. INDEPENDENT CLAIMS are included for the following: (1) graphene modified titanium dioxide film nano composite structure; and (2) usage of graphene modified titanium dioxide film nano composite structure for photocatalytic degradation of organic pollutant.