Preparation and microwave absorbing performance of MoS₂@Fe₃O₄@PANI composites

MoS₂@Fe₃O₄@PANI composites were prepared by hydrothermal and in-suit polymerization reaction. MoS₂@Fe₃O₄ composites were fabricated by hydrothermal reaction in the presence of MoS₂ nanosheets. Then, MoS₂@Fe₃O₄@PANI composites were successfully synthesized by in-suit polymerization of aniline monomer on the surface of MoS₂@Fe₃O₄ composites. All the samples were characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). Moreover, the saturation magnetization (Ms) of MoS₂@Fe₃O₄@PANI composite is 28.1 emu/g. The maximum reflection loss of MoS₂@Fe₃O₄@PANI composites with 2.3 mm coating thickness is −40.97 dB at 10.06 GHz and the bandwidth of reflection loss less than −15 dB is 4 GHZ (8.2–12.2 GHz), which demonstrates MoS₂@Fe₃O₄@PANI composites possess excellent microwave absorption properties.