▎ 摘　　要

NOVELTY - Preparation of graphene/cellulose/titania nano-composite material involves ultrasonically dispersing graphite oxide in deionized water with mass ratio of 1:100-1000, adding sodium borohydride, reacting, filtering, washing filter cake, vacuum-drying, ultrasonically dispersing obtained graphene in deionized water, obtaining graphene solution, ultrasonically dispersing cellulose in deionized water, adding mesoporous titania powder, stirring, adding cetyltrimethylammonium bromide and graphene solution, stirring, centrifuging, washing, vacuum-drying, and grinding. USE - Preparation of graphene/cellulose/titania nano-composite material used for adsorbing dye e.g. malachite green dye in wastewater (all claimed). ADVANTAGE - The method enables preparation of graphene/cellulose/titania nano-composite material with high adsorption rate, by simple process. DETAILED DESCRIPTION - Preparation of graphene/cellulose/titania nano-composite material involves ultrasonically dispersing graphite oxide in deionized water for 0.5-5 hours, adding sodium borohydride, reacting at 35-100 degrees C for 0.5-6 hours, filtering reaction mixture, washing filter cake with deionized water, collecting black material, vacuum-drying at 50 degrees C, adding obtained graphene to deionized water, ultrasonically dispersing for 0.5-5 hours, obtaining graphene solution, ultrasonically dispersing cellulose in deionized water for 0.5-5 hours, adding mesoporous titania powder, mechanically stirring at 20-100 degrees C for 0.5-5 hours in a water bath, adding cetyltrimethylammonium bromide and graphene solution to obtained titania-supported cellulose, stirring for 1-8 hours, preferably 5 hours, centrifuging, washing with deionized water, vacuum-drying at 60 degrees C, and grinding. The mass ratio of graphite oxide and deionized water is 1:100-1000. The mass ratio of graphite oxide and sodium borohydride is 1:2-15. The mass ratio of graphene and deionized water is 1:100-500. The mass ratio of cellulose and deionized water is 1:100-700. The amount of cellulose with respect to total amount of mesoporous titania powder and cellulose is 16.67-75 %mass. The amount of graphene is 20-60 %mass with respect to total amount of graphene, cellulose and titania. The amount of cetyltrimethylammonium bromide is 5-25 %mass with respect to graphene.