Herein, Fe3O4nanoparticles and graphene oxide (GO) are compounded first, followed by the addition of cellulose nanofiber(CNF) and l-ascorbic acid, to obtain Fe3O4@reduced graphene oxide (rGO)/CNF foams via the freeze-drying method. Theelectrical condu...
Herein, Fe3O4nanoparticles and graphene oxide (GO) are compounded first, followed by the addition of cellulose nanofiber(CNF) and l-ascorbic acid, to obtain Fe3O4@reduced graphene oxide (rGO)/CNF foams via the freeze-drying method. Theelectrical conductivity and magnetism of as-prepared foams were improved due to the presence of rGO and Fe3O4,whichis suitable for electromagnetic interference (EMI) shielding material. The results exhibit that Fe3O4@rGO/CNF foams allpossess a porous structure, and the optimized foam shows an EMI shielding effectiveness value of ~ 23 dB in the X-band.
The good EMI shielding performance of the Fe3O4@rGO/CNF foam originates from the synergy of its composition andstructure. This work could provide a reference for the design and fabrication of novel EMI shielding materials.