The MoS₂@polypyrrole@Fe₃O₄ composite was skillfully synthesized via a novel one pot method. No any separation step during the synthesis process, and the Fe²⁺ was successively utilized to prepare the Ppy and Fe₃O₄, which can achieve a high utilization of raw materials. The characterization about microstructure, crystal form, elemental composition and surface functional groups verify the structure of MoS₂@polypyrrole@Fe₃O₄. Its hysteresis loop indicates that the composite performs typical soft magnetism behavior, with a magnetic saturation value of 20.3 emu.g⁻¹, which is helpful to improve the magnetic loss for EM wave absorbing. The reflection loss curve suggested that the composite exhibits superior EM wave absorption performance, with a minimum reflection loss value of –32 dB at the specimen thickness of just 2.0 mm due to the fair electromagnetic matching, interface polarization and interface relaxation. In addition, the one pot method used in this work can promisingly be applied to prepare other similar composites such as carbon fiber@polypyrrole@Fe₃O₄, graphene@polypyrrole@Fe₃O₄.

通过新颖的一锅法巧妙地合成了MoS ₂ @ polypyrroleole @ Fe ₃ O ₄复合材料。合成过程中没有任何分离步骤，并依次利用Fe ²⁺制备了Ppy和Fe ₃ O ₄，可以实现原料的高利用率。微观结构，晶体形式，元素组成和表面官能团的表征证实了MoS ₂ @ polypyrroleole @ Fe ₃ O _4的结构。其磁滞回线表明该复合材料表现出典型的软磁特性，磁饱和值为20.3 emu.g ^-1，有助于改善电磁波吸收的磁损耗。反射损耗曲线表明，该复合材料表现出优异的EM波吸收性能，由于公平的电磁匹配，界面极化和界面弛豫，在仅2.0 mm的样品厚度下，最小反射损耗值为–32 dB。此外，这项工作中使用的一锅法有望有望用于制备其他类似的复合材料，例如碳纤维@聚吡咯@Fe ₃ O ₄，石墨烯@聚吡咯@Fe ₃ O ₄。