Synthesis and characterization of some physical properties of Fe3O4 doped MoS2/PANI hybrid composites

Systems for absorbing electromagnetic waves in materials are essential for stealth applications and vulnerable electronic equipment. However, the ability to absorb EMW over a large bandwidth is still limited by certain limitations in material systems and engineering. Increasing the bandwidth and reducing material system reflections are crucial advancements for the development of future stealth technologies. In this study, hybrid structures were developed using semiconducting MoS2 nanosheets, Fe3O4 magnetic nanoparticles and conductive polyaniline. A systematic approach was employed to examine the structural, magnetic, morphological, thermal, electronic, and electromagnetic properties of these hybrid structures. As a result of the analysis, Fe3O4:MoS2 and PANI@Fe3O4:MoS2 hybrid sturucture, which can effectively absorb electromagnetic waves, were found to have superior EMW absorption properties. In particular, The F10M90 sample achieved a minimum reflection loss of -54.97 dB at a thickness of 3 mm and a frequency of 7.86 GHz, with an effective absorption range of 4.0 GHz. The P50F2.5M47.5 sample achieved a minimum reflection loss of -27.58 dB at a thickness of 2 mm and a frequency of 13.18 GHz, with an effective absorption bandwidth of 8.03 GHz. Based on the experimental findings, it is concluded that hybrid nanocomposites such as PANI@Fe3O4:MoS2, which are characterized by their lightweight structure and high temperature stability, can effectively absorb almost 99% of the EMW in the broadband range.