Hierarchical 3D MoSe₂ and 1D MnFe₂O₄ Wrapped with MnO₂ nanocomposites toward high-performance Bi-layer microwave absorber

Due to the widespread usage of electronic gadgets, electromagnetic interference and radiation pollution have become urgent problems. To reduce or eliminate electromagnetic pollution and interference, microwave absorption materials (MAMs) are urgently needed. Here, a solvothermal fabrication technique has been used to create a MoSe₂ structure that resembles a flower and a MnFe₂O₄@MnO₂ architecture that resembles a rod. To evaluate the properties of microwave absorption, single-layer and bilayer samples have been preapred with loading ratios of 15, 35 and 45 wt percent. When it comes to single-layer samples, a flower-shaped MoSe₂ structured sample with a 35-wt percent loading performs better in terms of microwave absorption. In bilayer absorbing samples, the top layer of the flower-like MoSe₂ structure exhibits high absorption capability. Moreover, samples with a higher loading ratio showed better absorption ability. Findings reveal that the primary reasons for the improvement in microwave absorption performance of bilayer samples are the layered structures are the higher electrical conductivity of Se in MoSe₂, multiple reflections in the layered structure, and a higher polarization loss. Moreover, in bilayer samples, the thickness of both layers was regulated to tune the microwave absorption properties. The results of this study may be useful in developing advanced single layer and bilayer MAMs in the future.