▎ 摘　　要

NOVELTY - Preparing photocatalytic porous hydrogel comprises (i) dissolving nano-titanium dioxide, graphene oxide and 2-aminoethyl methacrylate in water, ultrasonically dispersing for 30 minutes, reacting at 40degrees Celsius for 6 hours, allowing stand, and filtering to obtain polymerizable graphene oxide composite, (ii) uniformly mixing substance A, N,N-methylenebisacrylamide, polyoxyethylene polypropylene triblock polymer F127, initiator, graphene oxide compound and deionized water in reactor under the action of ultrasound according to certain proportion, stirring at 500 revolution/minute, adding certain proportion of toluene drop wise to the reactor to obtain emulsion system, (iii) transferring the emulsion system to fixed container, carrying out the reaction under the conditions of sealing at 60degrees Celsius for 12 hours, soaking and washing ethanol, and then washing with water to obtain final product. USE - The method is useful for preparing photocatalytic porous hydrogel. ADVANTAGE - The method: is simple; produces porous hydrogel loaded with nano-titania has high water absorption and swelling performance; utilizes nano-titanium dioxide loaded in the hydrogel has photocatalytic ability and can be used for the degradation of pollutants in water.