▎ 摘　　要

NOVELTY - A polyaniline-graphene oxide-nano nickel composite material is prepared by adding graphene oxide and sulfuric acid to obtain crystalline flake graphite, adding, e.g. sodium nitrate, reacting, ultrasonically dispersing, adding, e.g. hydrogen peroxide solution, filtering, centrifuging, performing semi-permeable membrane dialysis to obtain graphene oxide solution, stirring with nickel chloride-ethylene glycol solution, adding, e.g. sodium hydroxide solution, reacting, drying, grinding to obtain graphene oxide-loaded nano nickel composite powder and ultrasonically treating. USE - The composite material is used in chemical industry field. ADVANTAGE - The method is simple and easy. It has low cost and high yield. DETAILED DESCRIPTION - A polyaniline-graphene oxide-nano nickel composite material is prepared by: (A) adding 1.0-1.5 g graphene oxide in 40-60 mL of 98% sulfuric acid to obtain crystalline flake graphite; (B) stirring in ice water bath at 0-4 degrees C for 20-40 minutes, adding 1-2 g sodium nitrate and 9-11 g potassium permanganate, reacting for 1-3 hours, placing in water bath at 35 degrees C and reacting for 9-13 hours; (C) diluting with 350-450 mL distilled water, ultrasonically dispersing, adding 80-100 mL of 5% hydrogen peroxide solution and 45-55 mL dilute hydrochloric acid solution, filtering, centrifuging and collecting solid phase; (D) dissolving in 350-450 mL distilled water, performing semi-permeable membrane dialysis until neutral and diluting with distilled water until concentration of solution is 0.001-0.003 g/mL to obtain graphene oxide solution; (E) preparing 10-30 mL of 0.1 mol/L nickel chloride-ethylene glycol solution and 2-4 mL of 0.2 mol/L sodium hydroxide solution; (F) magnetically stirring 50 mL graphene oxide solution and nickel chloride-ethylene glycol solution for 30 minutes, adding sodium hydroxide solution and 4-6 mL of 80% hydrazine hydrate solution, putting into hydrothermal reactor and reacting at 120 degrees C for 3-5 hours; (G) suction filtering, drying at 50 degrees C for 20-28 hours and grinding to obtain graphene oxide-loaded nano nickel composite powder; (H) adding 0.1-0.3 g graphene oxide-loaded nano nickel composite powder in three-necked bottle, adding 0.5-1.5 mL toluene and ultrasonically treating for 3-6 minutes to obtain solution A; (I) dissolving 0.5-1.5 mL aniline in 12-16 mL of 1.5 mol/L hydrochloric acid solution to obtain solution B; (J) dissolving 1.5-2 g sodium dodecylbenzenesulfonic acid in 20-30 mL distilled water and ultrasonically treating for 3-6 minutes to obtain solution C; (K) adding solution B and solution C in three-necked bottle with solution A and ultrasonically treating for 10-20 minutes to obtain mixed solution; and (L) dissolving 2-3 g ammonium persulfate in 20-30 mL distilled water, adding into mixed solution in separatory funnel with rotation speed of 300 revolutions/minute at rate of 5 seconds/drop, reacting for 3-5 hours, reacting at 50 degrees C for 20-28 hours and grinding.