Economical synthesis of composites of FeNi alloy nanoparticles evenly dispersed in two-dimensional reduced graphene oxide as thin and effective electromagnetic wave absorbers

摘要: Developing electromagnetic wave absorbing materials prepared by a facile and economical way is great challenge. Herein, we report feasible route to synthesize series of two-dimensional FeNi/rGO composites hydrothermal method followed carbonization process. The characterization confirms that nano-sized FeNi alloy nanoparticles are evenly supported onto graphene sheets without aggregation. homogeneous dispersion the may result from introduction glucose oxygen-containing groups on surface oxide. Measurements show microwave attenuation capability can be improved dramatically adjusting proportion dielectric magnetic components. Consequently, material (FeNi/rGO-100) exhibits an excellent absorption performance. In detail, minimum reflection loss −42.6 dB effective bandwidth 4.0 GHz reached with thinner thickness 1.5 mm. This study demonstrates synergistic effects among particles, reduced oxide amorphous carbon layers give rise highlighted ability. Overall, composite promising candidate used as absorber, has shown potential application construct multitudinous materials.