Synthesis and electromagnetic wave absorption properties of three-dimensional nano-flower structure of MoS₂/polyaniline nanocomposites

Three-dimensional nano-flower structure of MoS₂/PANI nanocomposites were successfully fabricated via the in situ polymerization method. The best reflection loss could reach − 50.57 dB at 5.04 GHz with the thickness of 5.0 mm and the efficient absorption bandwidth (RL ≤ − 10 dB) was about 2.08 GHz when the mass ratio of MoS₂/PANI was 5:5. Additionally, in the case of satisfying effective electromagnetic wave absorption, other two effective and even wider absorption bandwidth could achieve 4.96 GHz (13.04–18.00 GHz) and 3.68 GHz (8.08–11.76 GHz) at the thickness of 2.0 mm and 3.0 mm, respectively. According to the electromagnetic parameters' analyses, the more multi-interfaces introduced by the construction of such three-dimensional nano-flower structure, the more multi-polarization and reflection could be occurred, the better electromagnetic wave absorption could be achieved. The results indicated that MoS₂/PANI nanocomposites were the promising electromagnetic wave absorbing materials.