Abstract
Herein, NiCoP nanoparticles decorated on reduced graphene oxide (rGO) were synthesized through a two-step hydrothermal-phosphorization route as enhanced microwave absorbers. Microstructure investigations indicate that NiCoP nanoparticles are uniformly anchored on the surface of rGO. Compared with the bare NiCoP, NiCoP/rGO nanocomposites reveal clearly improved microwave absorbing performance. The strongest reflection loss (RL) values of NiCoP/rGO hybrid absorber can reach −20.61 dB at 6.43 GHz with a matching thickness of 4.4 mm, and a broad effective absorption bandwidth (RL < −10 dB) of 4.13 GHz (13.87–18 GHz) can be obtained at only 2.0 mm, while the RL values of the pure NiCoP cannot reach −10 dB in the entire measurement frequency range. This improvement of microwave absorption is ascribed to the polarization, interface interaction and synergistic effect between NiCoP and rGO nanosheets. NiCoP/rGO nanocomposites are expected to be novel microwave absorption materials with high microwave absorption properties.
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