Robust effectiveness behavior of synthesized cobalt doped Prussian blue graphene oxide ferrite against EMI shielding

Abstract

The new age demands high thermal stability, lightweight, and strong absorptivity EM shielding materials with a broad absorption range of frequency band. The graphene oxide (GO) was synthesized through Hummer's method. Cobalt ferrite (COF) synthesized through the hydrothermal process and Prussian blue graphene oxide cobalt ferrite (PBGOCOF) synthesized through in-situ technique. The material formation confirmed through XRD and peaks are detected at 24.75°, 29.95°, 35.32°, 39.94°, 42.95°, 50.11°, 54.6°, 57.08° and 59.2° with corresponding crystal planes (1 1 1) (2 2 0) (3 1 1) (4 2 0) (4 2 2) (4 4 0) (6 0 0) (6 2 0) and (5 1 1) reflections. The epoxy, alkoxy, carboxyl, and O-H bonding was calculated through FTIR spectroscopy, and by using different bonding the material was characterized. Raman spectroscopy was used to analyze the chemical structure of the graphene and PBGOCOF. The ID/IG ratio (0.3560) of PBGOCOF described the reduction and charge transformation between GO, COF, and PB nanocomposite. By using SEM the morphology of the composite was characterized and confirmed the formation of PBGOCOF composite. EMI shielding properties of the suggested material are investigated and a minimum SET value of −46 dB is obtained in all sample thicknesses. SER value is achieved at −46 dB. From the dielectric results, it is observed that the prepared sample has extraordinary properties of shielding absorbance which are useful for EMI Shielding.