▎ 摘　　要

NOVELTY - A metal-organic framework-derived composite wave-absorbing material is prepared by: (1) dissolving terephthalic acid in dimethylformamide, stirring, adding ferric chloride hexahydrate and nickel(II) bis(acetylacetonate), ultrasonically mixing, hydrothermally reacting the resulting mixture in a stainless steel high-pressure reaction kettle at 110-130degrees Celsius for 1-32 hours, cooling to room temperature, centrifuging to obtain a brown precipitate, washing with dimethylformamide or ethanol, and drying overnight to obtain iron-nickel-MIL-101; and (2) adding the iron-nickel-MIL-101 to a tubular furnace, and heating at a heating rate of 1-10degrees Celsius/minute to 600-800degrees Celsius for 1-4 hours under a protective atmosphere. The mass ratio of nickel(II) bis(acetylacetonate), ferric chloride hexahydrate and terephthalic acid is 1:(1-3):(1-3). USE - Metal-organic framework-derived composite wave-absorbing material is used for electronic products, and as graphene/alloy composite material and carbon nanotube/ferrite composite material. ADVANTAGE - The metal-organic framework-derived composite wave-absorbing material: can be prepared by a method, which is simple in operation, and low in cost, and can be carried out industrially on a large scale; and uses metal-organic framework as a template to synthesize an ordered porous wave-absorbing material, which has excellent magnetic loss and impedance matching, wide effective absorption bandwidth and high reflection loss value after calcination of magnetic metal, alloy or metal oxide.