▎ 摘　　要

NOVELTY - The method for preparation of nitrogen-doped graphene loading cuprous oxide-cupric oxide nano-needle composite material, involves adding graphite powder to potassium persulfate, phosphorus pentoxide and concentrated sulfuric acid, adding potassium permanganate, adding distilled water, adding water and hydrogen peroxide, dialyzing yellow-brown solution to obtain solid graphene oxide, adding distilled water, adding graphene oxide aqueous solution to copper acetate, adding sodium dodecyl sulfonate, dripping aqueous ammonia and heating to obtain final product. USE - Method for preparation of nitrogen-doped graphene loading cuprous oxide-cupric oxide nano-needle composite material (claimed). DETAILED DESCRIPTION - Method for preparation of nitrogen-doped graphene loading cuprous oxide (Cu2O)-cupric oxide (CuO) nano-needle composite material, involves adding 2 g graphite powder to 1 plus minus 0.1 g potassium persulfate, 1 plus minus 0.1 g phosphorus pentoxide and concentrated sulfuric acid, heating at 80 degrees C for 6 hours, cooling to room temperature, filtering using microporous membrane, washing to neutrality with distilled water, drying the obtained product in air for 24 hours, washing, adding 6 mL ice-cooled concentrated sulfuric acid, stirring, adding 1.2 g potassium permanganate, heating at 35 degrees C for 2 hours, adding 20 mL distilled water, continuously adding 40 mL water and 2 mL 30% hydrogen peroxide, obtaining yellow-brown solution, filtering, washing with 150 mL concentration of 10 %mass hydrochloric acid solution, cleaning to remove metal ions and water to neutral, drying, dialyzing yellow-brown solution for one week, centrifuging, washing repeatedly with distilled water, drying and grinding to obtain solid graphene oxide, adding 50-100 mg graphene oxide to 50-100 mL distilled water, ultrasonically dispersing for 1-2 hours to obtain uniform aqueous solution of graphene oxide, adding graphene oxide aqueous solution to 1-2.0 g copper acetate, stirring and mixing for 3 hours to obtain uniformly mixed solution, adding 0.2-0.5 g sodium dodecyl sulfonate to mixed solution, stirring for 2 hours, dripping 30-40 mL of 25.0 wt.% aqueous ammonia, uniformly stirring, transferring the resulting brown solution to high temperature and high pressure reaction kettle, heating at 150-180 degrees C for 12 hours, washing the resulting black deposits with water, centrifuging at 60 degrees C to obtain final product.