▎ 摘　　要

NOVELTY - Preparing graphene-based catalyst loaded with copper nickel oxide, comprises e.g. (i) reacting flake graphite and sulfuric acid, washing, drying to obtain preoxidized graphite, reacting with potassium permanganate and hydrogen peroxide, hot filtering, and drying to obtain graphite oxide, (ii)mixing aqueous ammonia and absolute ethyl alcohol to obtain mixed solution (A), (iii) adding graphite oxide into (A), then ultrasonic dispersion, (iv) adding copper powder and nickel powder into mixed solution and ultrasonic dispersion, then reacting, and (v) subjecting to hydrothermal reaction kettle. USE - Graphene-based catalyst is useful for 2,4-dinitroanisole and 4-amino-2-nitroanisole. ADVANTAGE - The method is simple and utilizes less raw materials. DETAILED DESCRIPTION - Preparing graphene-based catalyst loaded with copper nickel oxide, comprises (i) adding flake graphite, potassium persulfate and phosphorus pentoxide into sulfuric acid, reacting at 60-80 degrees C for 5-6 hours under water bath condition, cooling to room temperature, washing to neutral using distilled water, drying at 60-80 degrees C under oven to obtain preoxidized graphite, adding obtained preoxidized graphite into sulfuric acid under ice bath condition, reacting for 0.5-1 hour under stirring condition, adding potassium permanganate and reacting at 30-50 degrees C for 3-4 hours under stirring condition, adding 500-2000 ml deionized water and 15-20 ml 30-50% hydrogen peroxide, and carrying out hot filtering, carrying out washing using 2-4 mol/ diluted hydrochloric acid solution, then washing to neutral by using deionized water, and drying at 50 degrees Cfor 48 hours under oven to obtain graphite oxide, (ii)mixing 30% aqueous ammonia, absolute ethyl alcohol and deionized water in a molar ratio of 1:5:8 to obtain mixed solution (A), (iii) adding graphite oxide into (A), then carrying out ultrasonic dispersion for 90-100 minutes, (iv) adding copper powder and nickel powder in molar ratio of 3:2 into mixed solution and carrying out ultrasonic dispersion for 20-30 minutes, then reacting to obtain precursor solution, and (v) transferring obtained precursor solution into hydrothermal reaction kettle, reacting at 180 degrees C, then washing using water, and further subjecting to heat treatment to obtain final product.