3D nest-like architecture of core-shell CoFe2O4@1T/2H-MoS2 composites with tunable microwave absorption performance
2020
As a promising microwave absorber filler, molybdenum disulfide (MoS2), owing the unique structure, high electrical conductivity and polarization effect, is receiving more and more interests. Developing MoS2-based composites with specific structure and morphology is a hot top in the field of microwave absorber, because of its strong multiple scattering and reflecting for microwave as well as the unique interfacial characteristics. Now, using a facile solvothermal method, a novel core-shell CoFe2O4@1T/2H-MoS2 composites is synthesized, where the CoFe2O4 nanospheres are entirely embedded into a special three-dimensional (3D) nest-like 1T/2H phase MoS2. Notably, in comparison with superparamagnetic CoFe2O4 nanospheres, the coercivity of as-synthesized CoFe2O4@1T/2H-MoS2 composites greatly increase. Here, 1T/2H-MoS2 exhibits ferromagnetism superimposed onto large diamagnetism. It is noted that, by adjusting the content of 1T/2H-phase MoS2, the microwave absorption performance of as-synthesized composites can b...
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