▎ 摘　　要

NOVELTY - A carboxylated graphene oxide/polyvinylidene fluoride composite ultra-filtration membrane preparation method involves performing an ultrasonic dispersion of carboxylated graphene oxide, dimethyl acetamide and triethyl phosphate in bisolvent. The dispersed product is mixed with polyvinylidene fluoride and heated at a temperature of 50-60 degrees C. The resulting product is stirred and cooled to room temperature, and leached using deionized water for 3-5 days and air dried to obtain the finished product. USE - Method for preparing a carboxylated graphene oxide/polyvinylidene fluoride composite ultra-filtration membrane. ADVANTAGE - The method enables preparing the ultra-filtration membrane in a simple, easy and environment-friendly manner with less time consumption, good hydrophilicity and machinery intensity.