Tuned MWCNT/CuO/FeO/Polyaniline nanocomposites with exceptional microwave attenuation and a broad frequency band.

In this study, novel quaternary MWCNT/CuO/FeO/PANI nanocomposites were synthesized with three different weight ratios of CuO/FeO/PANI to MWCNT (1:3), (1:4), and (1:5), where all of its components were synthesized separately and then combined in specific weight ratios. CuO/FeO/PANI transmission electron microscopy (TEM) images revealed that most nanoparticles were in a CuO/FeO hybrid form, with a narrow size distribution uniformly dispersed in a polymer background. The TEM and scanning electron microscopy (SEM) images of the MWCNT/CuO/FeO/PANI nanocomposite revealed that the MWCNT was uniformly coated with CuO/FeO/PANI.