Preparation and microwave absorption properties of ZnFe2O4/polyaniline/graphene oxide composite

In this work, a new kind of ternary composite (ZnFe2O4(cube)/Polyaniline/Graphene oxide composite) with good absorbing property was prepared by a simple in-situ polymerization. The chemical composition and morphology of ZnFe2O4 and composite were characterized by FT-IR, XRD, XPS, SEM. The electromagnetic absorption property of composite was investigated by means of vector network analyzer. The results indicated that the dielectric loss of ternary composite was dominated by the Debye dipolar relaxation. The maximum absorbing loss of ternary composite was −58.0 dB at 9.5 GHz, and the bandwidth exceeding −10 dB was 3.91 GHz with the absorber thickness of 3.29 mm.