▎ 摘　　要

NOVELTY - Preparing photocatalytic hydrogel particles comprises (i) dissolving nano titanium dioxide, graphene oxide and amino polyethylene glycol acrylate into water, ultrasonically dispersing for 30 minutes, reacting at 40degrees Celsius for 6 hours, filtering to obtain a polymerizable graphene oxide composite, (ii) mixing acrylamide, N,N-methylenebisacrylamide, polymerizable graphene oxide compound, initiator and deionized water uniformly under the action of ultrasonic condition in the reactor to obtain the reaction solution, (iii) dropping reaction into a heatable glass tube containing oil at a speed of 1 drop/30-60 seconds using syringe, After the product collected at the lower end of the glass tube is washed with water. USE - The photocatalytic hydrogel particles is useful for photocatalytic material to photocatalytic the pollutant in the water. ADVANTAGE - The method is simple.