▎ 摘　　要

NOVELTY - Preparation of beta -cyclodextrin-cellulose-oxidation graphene composite material involves leaching cellulose in sodium hydroxide, filtering, water washing, drying, adding sodium hydroxide and dimethyl sulfoxide, dripping epoxy chloropropane, reacting, adding sodium hydroxide, filtering, water washing, and drying; dissolving beta -cyclodextrin in sodium hydroxide, heating, adding epoxy cellulose, stirring, adding water, filtering, water washing, vacuum drying, and grinding; and dissolving beta -cyclodextrin-cellulose in water, adding graphene oxide, ultrasonic dispersing, vacuum drying, and grinding. USE - Method for preparing beta -cyclodextrin-cellulose-oxidation graphene composite material (claimed). ADVANTAGE - The material has porous structure, machine intensity, good electrical property, good organic cation adsorption, good dye removal in wastewater, good decoloring effect, simple operation, and high adsorption rate. DETAILED DESCRIPTION - Preparation of beta -cyclodextrin-cellulose-oxidation graphene composite material comprises taking cellulose, leaching in 3-20% sodium hydroxide for 24 hours, suction filtering, water washing, drying, adding sodium hydroxide solution, adding dimethyl sulfoxide, heating to 25-60 degrees C, stirring, dripping epoxy chloropropane, reacting for 30 minutes, measuring pH, adding sodium hydroxide solution, maintaining pH at 9-13, suction filtering, water washing, drying to obtain epoxidized cellulose, where mass ratio of cellulose and dimethyl sulfoxide is 1:1-5, and mass ratio of cellulose and epoxy chloropropane is 1:1-5; dissolving beta -cyclodextrin in 6.82-120.23 wt.% sodium hydroxide solution, heating to 25-85 degrees C, adding epoxy cellulose, stirring for 0.5-6 hours, adding distilled water, suction filtering, water washing until neutral, vacuum drying at 50 degrees C, and grinding to obtain beta -cyclodextrin-cellulose, where mass ratio cellulose and beta -cyclodextrin is 1:1-5, and mass ratio of cellulose and sodium hydroxide is 1:1-10; and dissolving beta -cyclodextrin-cellulose in water, adding graphene oxide, ultrasonic dispersing for 0.5-5 hours to obtain beta -cyclodextrin cellulose-graphene oxide suspension, vacuum drying at 50 degrees C, and grinding, where mass ratio of graphene oxide and beta -cyclodextrin-cellulose is 1:1-10.