▎ 摘　　要

Carbon based materials have attracted much attention due to their high conductivity and shielding properties. In the present investigation, Fe-4[Fe(CN)(6)](3) (Prussian blue), graphene oxide (GO) and magnetite (Fe3O4) nano-composite 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 Fe-4[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 Fe-4[Fe(CN)(6)](3)/GO/Fe3O4 (PBGF) composite was 13.19 nm with density of 0.943 g/cm(3), 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.