▎ 摘　　要

NOVELTY - Synthesizing graphene oxide-cerium oxide-iron oxide composite material, involves (a) mixing graphene oxide and deionized water, and ultrasonically dissolving to obtain a solution, (b) adding cerium nitrate and ferric sulfate to the solution, and stirring the reaction to obtain a mixture (A), (c) adjusting pH value of the mixture (A) to obtain a mixed liquid (B), (d) heating the liquid (B), and adding urea solution to control the pH value to obtain mixed liquid (C), (e) cooling the liquid (C), stirring, adding sodium hydroxide solution, stirring to control the pH value, precipitating, suction filtering, washing with deionized water to obtain a neutral precipitate, transferring the mixture of ethanol and urea solution for the neutral precipitation to a hydrothermal reactor, and cooling to obtain a product, and (f) filtering the product, washing with ethanol and deionized water, transferring the product to a Petri dish, drying in a vacuum drying oven, and drying in an oven. USE - The method is useful for synthesizing graphene oxide-cerium oxide-iron oxide composite material used in catalytic degradability and wastewater treatment as catalyst (all claimed). ADVANTAGE - The prepared material has catalytic effect, short reaction time and less amount, and can be recycled for multiple times after processing. DETAILED DESCRIPTION - Synthesizing graphene oxide-cerium oxide-iron oxide composite material, involves (a) mixing graphene oxide and deionized water, and ultrasonically dissolving to obtain a solution, (b) adding cerium nitrate and ferric sulfate to the solution, and stirring the reaction to obtain a mixture (A), (c) adjusting pH value of the mixture (A) to 5-6 to obtain a mixed liquid (B), (d) heating the mixed liquid (B), and adding urea solution to control the pH value of the solution to obtain mixed liquid (C), (e) cooling the mixed liquid (C), stirring at room temperature, adding sodium hydroxide solution, stirring to control the pH value, precipitating, suction filtering, washing with deionized water until the precipitate is neutral to obtain a neutral precipitate, transferring the mixture of ethanol and urea solution for the neutral precipitation to a hydrothermal reactor, and cooling the reactor to room temperature to obtain a product, and (f) filtering the product, washing with ethanol and deionized water until neutral, transferring the neutral product to a Petri dish, drying in a vacuum drying oven, and drying in an oven to obtain the composite material.