▎ 摘　　要

NOVELTY - A low-molecular weight polyethylene glycol graft-modified titania-reduced graphene oxide photocatalyst is prepared by mixing graphene oxide, absolute ethanol, deionized water and low-molecular weight polyethylene glycol with molecular weight of 600, heating and stirring at 20-40 degrees C to obtain adsorption system, dissolving tetrabutyl titanate and metal ion nitrate in anhydrous ethanol, heating and stirring at 50-70 degrees C under nitrogen protection for 1.5-2.5 hours, cooling to obtain composite reactant solution, mixing with adsorption system, reacting for 4-6 hours, centrifuging, drying at 30-50 degrees C, obtaining black powder, mixing with low-molecular weight polyethylene glycol with molecular weight of 600, performing constant temperature heat treatment, cooling, centrifuging, washing, and drying. USE - Method for preparing low-molecular weight polyethylene glycol graft-modified titania-reduced graphene oxide photocatalyst. ADVANTAGE - The product has improved adsorption ability to organic matter in high-salt wastewater and has expanded visible light response. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the application of low-molecular weight polyethylene glycol graft-modified titania-reduced graphene oxide photocatalyst comprising adding low-molecular weight polyethylene glycol graft-modified titania-reduced graphene oxide photocatalyst into high-salt wastewater system with salt concentration of 10-20%, and carrying out organic matter treatment.