High-performance EMI shielding effectiveness of FeO-3D rPC nanocomposites: a systematic optimization in the X-band region.

In this work, the microwave absorption (MWA) performance of a FeO-3D reduced porous carbon nanocomposite (3D rPC NC) in the X-band region is reported. Three different shields are fabricated by altering the ratio of FeO nanoparticles (NPs) and 3D rPC and evaluating their microwave (MW) shielding performance with appropriate in-wearing instruments due to their minimum thickness. The chemical interaction between FeO NPs and 3D rPC is examined from chemical composition analysis of FeO-3D rPC (1 : 2 ratio), which is confirmed by the presence of the Fe-O-C bond in the O 1s spectrum obtained from XPS analysis and subsequent analysis using FESEM images.