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

Abstract

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.