One-pot simplified co-precipitation synthesis of reduced graphene oxide/Fe3O4 composite and its microwave electromagnetic properties

The reduced graphene oxide (RGO) coated with Fe3O4 composite was synthesized through a facile one-pot simplified co-precipitation route, which avoided the usage of inert gas and any additional chemical agents (such as surfactants). Given these advantages, the strategy described in this study can be developed as a simple and large-scale yield route to RGO/Fe3O4 composite. The RGO/Fe3O4 composite shows the maximum absorption of −44.6 dB at 6.6 GHz with the thickness of 3.9 mm, and the loss mechanism is mostly dielectric loss. It is believed that such composite will find its wide applications in microwave absorbing area.