▎ 摘　　要

NOVELTY - A titanium dioxide-graphene composite moisture sensitive material preparation method involves dispersing oxidation graphene in ethyl alcohol and oxidation. 25-28 mass% ammonia water is added with oxidation graphene suspension-ethyl alcohol for 10-30 minutes ultrasonic dispersing. Liquid titanium source is slowly added. Amorphous titanium dioxide is heated at 150-180 degrees C under hydrothermal reaction 12-24 hours to obtain graphene. Centrifugal separating process is carried out for 6-12 hours to obtain anatase titanium dioxide-graphene composite material by utilizing freezing and drying sediment. USE - Method for preparing titanium dioxide-graphene composite moisture sensitive material. ADVANTAGE - The method enables preparing titanium dioxide-graphene composite moisture sensitive material with better humidity sensitive property in a simple manner and cost-effective manner without toxicity reagent by utilizing anatase titanium dioxide and grapheme nano composite material and titanium dioxide particle. DETAILED DESCRIPTION - A titanium dioxide-graphene composite moisture sensitive material preparation method involves dispersing oxidation graphene in ethyl alcohol and oxidation to obtain graphene suspension according to 5-10 mg / 100 ml ratio solid/liquid. 25-28 mass% ammonia water is added with oxidation graphene suspension-ethyl alcohol for 10-30 minutes ultrasonic dispersing to obtain suspension-ethyl alcohol according to 1-5/1000 volume ratio ammonia water/oxidation graphite oxide- alkene alcohol suspension. Liquid titanium source is slowly added in dropwise in 400-700 revolutions / minute speed at 20-50 degrees C for 6-24 hours and finally washed by centrifuged to obtain amorphous titanium dioxide-oxidation graphene sediment according to 5-20/1000 volume ratio liquid titanium source/suspension. Amorphous titanium dioxide is heated at 150-180 degrees C under hydrothermal reaction 12-24 hours to obtain graphene. Centrifugal separating process is carried out for 6-12 hours to obtain anatase titanium dioxide-graphene composite material by utilizing freezing and drying sediment.