Preparation and electromagnetic waves absorption performance of novel peanut shell/CoFe2O4/(RGO)x/PVA nanocomposites

Abstract

Novel functional materials possessing the capability to attenuate electromagnetic energy are being increasingly incorporated into home decor as concerns over excessive electromagnetic radiation pollution continue to grow. The properties of magnetism and dielectricity in the flexible peanut shell/CoFe2O4/reduced graphene oxide/polyvinyl alcohol (PS/CF/(RGO)x/PVA) nanocomposites can be finely tuned by adjusting the amount of RGO in the mixture. An examination of the composite’s absorption capabilities revealed a direct link between higher RGO content and enhanced absorption. Due to the presence of multiple pathways for electromagnetic wave transmission through the three-dimensional porous structure, as well as the synergistic effects of dielectric-magnetic properties and various defects in the carbon derived from peanut shells, the PS/CF/(RGO)x/PVA nanocomposites exhibit remarkable impedance matching and exceptional attenuation capabilities to -20.98404 dB for a thickness of 1 mm. Additionally, the PS/CF/(RGO)x/PVA nanocomposites have shown great promise in the production of flexible electronic devices like light-dependent resistors. Their lightweight and flexible nature play a crucial role in their success in this application. It is worth mentioning, however, that these nanocomposites bear a resemblance to traditional absorber equipment used in the industry.