▎ 摘　　要

NOVELTY - Preparation of composite photocatalytic material involves obtaining iron oxide by reacting e.g. ferric chloride hexahydrate, ammonium acetate and ethylene glycol solution, ultrasonically dissolving in anhydrous absolute ethanol, ultrasonically processing, reacting with 3-aminopropyltrimethoxysiloxane (APTMS) solution, dripping to dissolved tetrabutyl titanate solution, reacting with cetyltrimethylammonium bromide, adding graphene oxide solution, reacting, washing the product, vacuum-drying, and obtaining iron oxide-titanium dioxide/graphene oxide as the photocatalytic material. USE - Preparation of composite photocatalytic material (claimed). ADVANTAGE - The method enables preparation of composite photocatalytic material having excellent photocatalytic degradation performance. DETAILED DESCRIPTION - Preparation of composite photocatalytic material involves dissolving 1.350 g ferric chloride hexahydrate, 3.854 g ammonium acetate and 0.4557 g sodium citrate in 70 mL ethylene glycol solution, stirring in an oil bath at 170 degrees C for 1 hour to obtain a dark solution, transferring into a polytetrafluoroethylene reactor, reacting at 200 degrees C for 6 hours, cooling to room temperature, separating the dark solid material with a magnet, washing the solid material 5 times with absolute ethanol, vacuum-drying at 50 degrees C to obtain iron oxide, ultrasonically dissolving 60 mg iron oxide in 20 mL anhydrous absolute ethanol, adding 75 mL absolute ethanol and 5 mL deionized water, ultrasonically processing for 20 minutes, transferring to 100 mL three-necked flask, adding 2 mL 3-aminopropyltrimethoxysiloxane (APTMS) solution under stirring, placing in a water bath, reacting the mixture at 60 degrees C for 7 hours, separating the product with a magnet, washing the product 5 times with anhydrous ethanol to obtain APTMS-modified iron oxide, dissolving tetrabutyl titanate in 2 mL absolute ethanol, dripping iron oxide dispersion liquid under electric stirring, reacting for 30 minutes, adding 15 mg cetyltrimethylammonium bromide, reacting continuously for 30 minutes, separating the product with a magnet, washing the product 5 times with anhydrous ethanol, vacuum-drying at 50 degrees C to obtain iron oxide-titanium dioxide material has different titanium dioxide coating thickness, adding 40 mg iron oxide-titanium dioxide material to graphene oxide solution, reacting for 30 minutes under electric stirring, transferring the mixture to a polytetrafluoroethylene reactor, reacting at 180 degrees C for 18 hours, cooling to room temperature, separating the product with a magnet, washing the product 5 times with absolute ethanol, vacuum-drying at 50 degrees C, and obtaining iron oxide-titanium dioxide/graphene oxide as composite photocatalytic material.