▎ 摘　　要

NOVELTY - Preparing reduced graphene oxide/naphthol/nickel foam induction heating material comprises (a) dispersing graphene oxide solution in ultrapure water, ultrasonically treating to obtain a uniform graphene solution, heating, cooling to room temperature, repeatedly washing by ethanol and ultra-pure water, and vacuum drying to obtain reduced graphene oxide, (b) dispersing the reduced graphene oxide in isopropyl alcohol, reducing graphene oxide concentration to 1-3 mg/ml, ultrasonically processing to obtain uniform reducing graphene oxide solution, adding naphthol solution, and continuously ultrasonically processing to obtain the reduced graphene oxide/naphthol solution, and (c) adding the reduced graphene oxide/naphthol solution into a high pressure spray gun, uniformly spraying on two sides of the clean nickel foam, adding into vacuum drying after each spraying, proceeding to the next spraying, and repeatedly spraying for 10-15 times. USE - The heating material is useful in membrane distillation treatment of high-salt wastewater (claimed). ADVANTAGE - The heating material can increase the driving force of distillation and realizes high membrane distillation output flux, increases the surface temperature of the membrane, increases the pressure on both sides of the membrane, expands the membrane pores, and increases the throughput of hot steam, the surface temperature of the membrane is accompanied by an increase in the temperature of the solution and reduces salt deposition and reduces membrane pollution, solves the problem that affects the membrane flux due to the membrane fouling problem, so as to affect the membrane distillation efficiency and salt deposition in high-salt wastewater at room temperature; and is environmentally-friendly. DETAILED DESCRIPTION - Preparing reduced graphene oxide/naphthol/nickel foam induction heating material comprises (a) dispersing graphene oxide solution in ultrapure water, ultrasonically treating for 10-30 minutes to obtain a uniform graphene solution, transferring into a polytetrafluoroethylene reaction kettle, heating at 120-150 degrees C for 3-5 hours, cooling to room temperature, repeatedly washing for 3-5 times by ethanol and ultra-pure water, and vacuum drying to obtain reduced graphene oxide, (b) uniformly dispersing the reduced graphene oxide in isopropyl alcohol, reducing graphene oxide concentration to 1-3 mg/ml, ultrasonically processing for 20-40 minutes to obtain uniform reducing graphene oxide solution, adding naphthol solution, and continuously ultrasonically processing for 20-40 minutes to obtain the reduced graphene oxide/naphthol solution, where the ratio of naphthol to reducing graphene oxide mass dosage is (1-2):1000, and (c) adding the reduced graphene oxide/naphthol solution into a high pressure spray gun, uniformly spraying on two sides of the clean nickel foam, adding into vacuum drying at 50-60 degrees C after each spraying, completely drying, and proceeding to the next spraying, and repeatedly spraying for 10-15 times. An INDEPENDENT CLAIM is also included for method for membrane distillation treatment of high-salt wastewater using the reduced graphene oxide/naphthol/nickel foam induction heating material, comprising (i) placing the reduced graphene oxide/naphthol/nickel foam induction heating material on the surface of the film, inductively heating the induction heating material by an induction heater, where the voltage adjustment range of the induction heater is 12-24 V, the operating frequency is 150-200 kHz and fixed input power of 50-100W, and (ii) turning on the membrane distillation system, adjusting the feed flow rate of high-salt wastewater to 10-250 ml/minute, and performing membrane distillation treatment.