▎ 摘　　要

NOVELTY - Synthesis of graphene oxide-cerium oxide-cobaltosic oxide composite material comprises mixing graphene oxide and deionized water and ultrasonic dissolving; adding cerium nitrate and cobalt chloride hexahydrate, stirring, and reacting; adjusting pH value; heating, adding urea solution and controlling pH value; cooling, stirring at room temperature, adding sodium hydroxide solution to stir, controlling pH value, precipitating, filtering, and washing with deionized water until the precipitate is neutral; adding ethanol and urea solution, hydrothermal reacting, and cooling to room temperature; and filtering, washing with ethanol and deionized water to neutral, evaporating water on the surface, vacuum drying, and oven-drying. USE - The method is used for synthesis of graphene oxide-cerium oxide-cobaltosic oxide composite material as catalyst for waste water treatment (claimed). ADVANTAGE - The composite material has significant catalytic effect, short preparation time, and low dosage, exceeds in catalytic effect compared various catalysts reported in literature, can be recycled, and is green. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene oxide-cerium oxide-cobaltosic oxide composite material.