Ni nanoparticle modified graphene and preparation method of wave-absorbing material

The invention discloses Ni nanoparticle modified graphene and a preparation method of a wave-absorbing material of Ni nanoparticle modified graphene and belongs to the technical field of preparation of function materials. Firstly, low-defect graphite oxide is prepared with an improved Hummers method and subjected to ultrasonic oscillating, graphene oxide is obtained, and graphene oxide and Ni are reduced with a reducer in one step, so that Ni nanoparticles are sufficiently adsorbed on the surface of graphene; then, a product is blended with epoxy resin for preparation of a nano wave-absorbing material. Compared with the wave-absorbing performance of the same type of wave-absorbing materials, the wave-absorbing performance of the Ni nanoparticle modified graphene wave-absorbing material is greatly improved, and the Ni nanoparticle modified graphene wave-absorbing material has both electric absorption and magnetic absorption capability and has a higher effective absorption bandwidth. According to the preparation method, the raw materials are low in cost and easy to obtain; the experiment conditions are easy to realize; the preparation method has the advantages of simplicity in operation and small pollution.