Microwave absorption performance of hierarchical structured composites of greigite and reduced graphene oxide

The greigite (Fe 3 S 4 )/reduced graphene oxide (RGO) hierarchical structural composites (F–R) with the Fe 3 S 4 nanoparticles attached to the RGO layers were successfully prepared via a simple one-pot solvothermal method. The microwave absorption properties were evaluated by calculating the reflection loss (RL) values. The results show that the RGO content and the filler loading of composites in paraffin mixture are very critical to the microwave absorption properties because they can improve the electromagnetic parameters. Sample F–R-3 presents the best microwave absorption capacity, in which an optimum RL value of − 62.3 dB and an effective absorption bandwidth (EAB, RL value