▎ 摘　　要

NOVELTY - A titanium dioxide-oxidized graphene nano compound blended polyvinylidene fluoride-doped mixed matrix ultra-filtration membrane preparing method involves taking tetrabutyl titanate and utilizing precipitation-dipping method, followed by adding N,N'-dimethyl acetamide and polyvinylidene fluoride and mixing, stirring and reacting to obtain casting liquid. The casting liquid is coated on clean glass plate, and utilizing immersion precipitated phase conversion method to prepare finished product. USE - Method for preparing titanium dioxide-oxidized graphene nano compound blended polyvinylidene fluoride-doped mixed matrix ultra-filtration membrane. ADVANTAGE - The method enables preparing the titanium dioxide-oxidized graphene nano compound blended polyvinylidene fluoride-doped mixed matrix ultra-filtration membrane with better effect of improving the mixing matrix ultra-filtration membrane and pure water permeation flux. DETAILED DESCRIPTION - A titanium dioxide-oxidized graphene nano compound blended polyvinylidene fluoride-doped mixed matrix ultra-filtration membrane preparing method involves taking tetrabutyl titanate as titanium source and utilizing precipitation-dipping method to prepare the three-dimensional structure of titanium dioxide-oxidized graphene nano compound, followed by adding N,N'-dimethyl acetamide and polyvinylidene fluoride and mixing uniformly, stirring and reacting until the viscosity of the system reaches 280-320 mPa.s to obtain casting liquid. The casting liquid is coated on clean glass plate, and utilizing immersion precipitated phase conversion method to prepare finished product.