Fe3O4/graphene oxide/Fe4[Fe(CN)6]3 nanocomposite for high performance electromagnetic interference shielding

Abstract Carbon based materials have attracted much attention due to their high conductivity and shielding properties. In the present investigation, Fe4[Fe(CN)6]3 (Prussian blue), graphene oxide (GO) and magnetite (Fe3O4) nanocomposite was prepared and their electromagnetic (EM) shielding efficiency was evaluated. The GO was prepared via Hummer's method and composite was prepared with Fe3O4 and Fe4[Fe(CN)6]3. The prepared composite was characterized by X-ray diffraction (XRD), photoluminescence (PL), Fourier transform infrared (FTIR), ultraviolet visible (UV–Vis) and Raman spectroscopy techniques. The average particle size of Fe4[Fe(CN)6]3/GO/Fe3O4 (PBGF) composite was 13.19 nm with density of 0.943 g/cm3, Using dielectric parameters, the shielding effectiveness of the sample was evaluated. A −51.66 dB of reflection losses was observed at 2 MHz and results revealed that the PBGF has manifesting properties of shielding absorbance which are useful for EMI shielding application.