▎ 摘　　要

NOVELTY - Reduced graphene oxide/multi-walled carbon nanotubes/nickel ferrite (RGO/MWCNTs/NiFe2O4) ternary nanocomposite absorbing material comprises two-dimensional sheet graphene oxide, one-dimensional tubular MWCNTs and magnetic nickel ferrite nanoparticles, local three-dimensional conductive network in the composite material, and enhances the attenuation loss of electromagnetic waves. USE - The material is useful in the field of electromagnetic absorption and electromagnetic shielding. ADVANTAGE - The material: has strong ability to absorb electromagnetic waves; is environmentally friendly; has no poisonous product, simple preparation method and low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the reduced graphene oxide/multi-walled carbon nanotubes/nickel ferrite ternary nanocomposite absorbing material, comprising (i) taking three 100 ml beakers and adding 60 ml deionized water, adding 36 mg graphite oxide, ultrasonically treating for 30 minutes, stirring vigorously for 2 hours to obtain graphene oxide (GO) aqueous dispersion with concentration of 0.60 mg/ml, and adding 0, 10 and 20 mg MWCNTs, ultrasonically dispersing for 30 minutes in the aqueous solution, (ii) adding iron nitrate nonahydrate and nickel nitrate hexahydrate, stirring vigorously for 30 minutes and sonicating for 30 minutes, where the molar ratio of iron (III) and nickel (II) is 2:1, (iii) adding the ammonia water in a dropwise to adjust the pH of the mixed dispersion to 11, (iv) pouring the mixed dispersion into a 100 ml reactor and hydrothermally reacting at 180 degrees C for 24 hours, (v) cooling to room temperature, and collecting the solid product by magnetic separating, washing with deionized water until neutral, then washing for three times with absolute ethanol, and (vi) placing in a vacuum drying oven, drying at 60 degrees C for 24 hours, and grinding to obtain final product.