Abstract
The reduced graphene oxide (RGO)/NiFe2O4 composite was synthesized by a facile one-pot hydrothermal route, which avoided the usage of chemical reducing agent. The reduction of graphene oxide (GO) and the crystallization of NiFe2O4 crystals happened in a one-step hydrothermal process. The morphology, microstructure and magnetic properties of the composite were detected by means of XRD, XPS, TEM, EDX, TG-DSC and VSM. The maximum RL of the RGO/NiFe2O4 composite is −39.7dB at 9.2GHz with the thickness of 3.0mm, and the absorption bandwidth with the RL below −10dB is up to 5.0GHz (from 12.7 to 17.7GHz) with a thickness of 1.9mm. The introduction of RGO signally enhanced microwave absorption performance of the NiFe2O4 NPs. It is believed that such composite will be applied widely in microwave absorbing area.
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