▎ 摘　　要

NOVELTY - Preparing insoluble magnetic graphene/cobalt complex catalyst involves taking 2.703g ferric chloride hexahydrate, 2.780g iron sulfate heptahydrate and 6.033g cobalt sulfate heptahydrate, dissolving in 20mL deionized water until completely dissolved orange-red mixed solution obtained, placing the mixed solution on water bath at 60 degrees C temperature, adding dropwise 45mL molar concentration of 3mol/L ammonia solution to obtain a cloudy liquid containing a large amount of black solid. USE - Method used for preparing insoluble magnetic graphene and cobalt complex catalyst in the catalytic oxone degradation dye wastewater application (all claimed). ADVANTAGE - The method offers product which effectively catalyzes oxone degrading dye waste water, and it has good insolubility in neutral and alkaline environment, better catalytic performance, photo-catalytic performance, and degradation of biodegradable organic pollutants. DETAILED DESCRIPTION - Preparing insoluble magnetic graphene/cobalt complex catalyst involves taking 2.703g ferric chloride hexahydrate, 2.780g iron sulfate heptahydrate and 6.033g cobalt sulfate heptahydrate, dissolving in 20mL deionized water until completely dissolved orange-red mixed solution obtained, placing the mixed solution on water bath at 60 degrees C temperature, adding dropwise 45mL molar concentration of 3mol/L ammonia solution to obtain a cloudy liquid containing a large amount of black solid. The turbid liquid containing a large amount of black solid is processed under 20KHz ultrasonic frequency and 100W power at 60 degrees C temperature for 30 minutes, cooled to room temperature, rinsed with deionized water until neutral, and then air-dried to obtain 11% magnetic cobalt catalyst. The 1g of graphite powder is added to 23mL 98% sulfuric acid at ice bath, stirred for 10 minutes, 3g of potassium permanganate added, stirred for 1 hour to obtain dark green mixture, transferred on 30 degrees C temperature water bath, and stirred for 1 hours. Subsequently, 46 mL of deionized water is added dropwise to the dark green mixture on 96 degrees C temperature water bath, stirred for 30 minutes, and finally 10 mL of hydrogen peroxide and 140 mL of deionized water added to terminate the reaction. The resulting mixture is centrifuged at 4000 rotations/minute speed for 10 minutes, and then washed with 5% hydrochloric acid and ethanol, 3 times with each. The precipitate is collected, and dried at 60 degrees C temperature for 12 hours to obtain graphene oxide. The 0.45g 11% magnetic cobalt catalyst is dissolved in 40mL of deionized water, then 0.1g graphene oxide is added, followed by ultrasonic dispersion for 1 hour, adding 0.1mL hydrazine hydrate, and ultrasonic dispersion for 5 minutes, transferred to hydrothermal reactor at 180 degrees C temperature for 10 hours, cooled to room temperature, filtered, and the precipitate dried at 60 degrees C temperature for 6 hours to obtain the 9% insoluble magnetic graphene/cobalt completely catalyst. An INDEPENDENT CLAIM is included for a method for applying the insoluble magnetic graphene/cobalt complex catalyst, which involves: (A) mixing the 5mL Oxone 0.01mol/L and 0.005g cobalt omposite catalyst in oxidized system to a 50mL 25mg/L rhodamine B dye wastewater at room temperature; and (B) processing under 8min degradation of 99.78% efficiency and 10min degradation of 100% efficiency, followed by repeated recycling.