▎ 摘　　要

NOVELTY - Preparation of graphene oxide/titanium oxide composite film involves intercalating titanium carbide two-dimensional inorganic compound and drying with N,N-dimethyl sulfoxide and deionized water at a mass ratio of 1:100, crushing using an ultrasonic crusher for 6 hours, centrifuging the obtained suspension at 10000 rpm and filtering the obtained supernatant through a 0.22 mu m pore size filter membrane to obtain dark green quantum dot solution, mixing graphene oxide solution and quantum dot solution in a mass ratio of 10:1-2 to form a mixed solution, controlling the air flow rate to 100-400 mL/minute, filling the obtained mixed solution with air, ultrasonically processing at 35-55 degrees C for 30 minutes and oxidizing quantum dots into titanium oxide nanoparticles, and pouring the obtained product into a suction filter bottle with a microfiltration membrane and loading nanoparticles and graphene oxide on the surface of the microfiltration membrane by vacuum filtration. USE - Preparation of graphene oxide/titanium oxide composite film. ADVANTAGE - The method enables simple and easy preparation of graphene oxide/titanium oxide composite film with improved pure water flux and rejection rate of heavy metals.