Barium ferrite decorated reduced graphene oxide nanocomposite for effective electromagnetic interference shielding

Abstract

There is an increased interest in the development of high performance microwave shielding materials against electromagnetic pollution in recent years. Barium ferrite decorated reduced graphene oxide

Excellent microwave absorption properties by tuned electromagnetic parameters in polyaniline-coated Ba0.9La0.1Fe11.9Ni0.1O19/reduced graphene oxide nanocomposites

“…2 can be clearly indexed to the (100), (008), (107), (114), (008), (200), and (201) crystal planes of M-type hexaferrite barium ferrite. 3 All observed peaks of BF have been well matched with the standard XRD pattern (PDF card no. 33-1340).…”

“…The broadening of the G band for the BF/RGO/PANI nanocomposites may be due to the coating of amorphous PANI on BF/RGO. 3 In Fig. 5c, it can be seen that the G band of BF/RGO/PANI nanocomposites show a slight shi compared with the BF/RGO nanocomposites, indicating the presence of charge transfer among RGO, SF, and PANI.…”

“…This suggests that BF has an exceptionally high thermal stability. 3 For BF/RGO, it can be seen that the BF/ RGO nanocomposites undergo a slight weight loss at a temperature of C and an abrupt weight loss at a temperature of 400-500 C, which is attributed to the decomposition of the residual oxygen-containing group and the oxidation of RGO, respectively. The residue consists of BF particles and the mass fraction of BF is approximately 90%, suggesting that the RGO is completely combusted.…”

“…For example, Verma et al investigated the electromagnetic properties of BaFe 12 O 19 /reduced graphene oxide (RGO) nanocomposites and reported a maximum shielding effectiveness of 32 dB at a critical thickness of 3 mm. 3 Hu et al fabricated three-dimensional (3D) Fe 3 O 4 -graphene nanocomposites of which the minimum reection loss was À27 dB with a thickness of 4 mm and the absorption bandwidths with a reection loss below À10 dB ranged from 6.5 to 10.3 GHz.…”

“…EMI has greatly threatened the health of human beings and has disrupted both commercial and industrial equipment. [1][2][3] In order to address EMI, it is necessary to investigate materials with excellent microwave absorption as a matter of urgency. Microwave absorbing materials can absorb electromagnetic waves and convert electromagnetic energy into other types of energy or dissipate the electromagnetic wave.…”