▎ 摘　　要

NOVELTY - Preparation of reduced graphene oxide/titanium dioxide composite wastewater treatment agent comprises taking graphene oxide and titanium dioxide, adding water/ethanol mixture, ultrasonically dispersing to obtain reaction suspension, placing in reaction vessel, reacting at 140-160 degrees C for 1-2 hours with pressure of 0.55-0.65 MPa, cooling, filtering, washing and drying. USE - Method for preparing reduced graphene oxide/titanium dioxide composite wastewater treatment agent used for treating tobacco sheet production wastewater (claimed). ADVANTAGE - The method is simple and easy to operate. The product has good photocatalytic effect and effectively reduces chemical oxidation demand in tobacco sheet wastewater.