One-pot synthesis of MnFe₂O₄ nanoparticles-decorated reduced graphene oxide for enhanced microwave absorption properties

Abstract

MnFe₂O₄ nanoparticles are successfully decorated on the surface of the reduced graphene oxide (RGO) sheets through a simple, one-step hydrothermal method. The morphology, microstructure and electromagnetic properties of MnFe₂O₄/RGO composite were characterized by XRD, TEM, XPS, VSM and vector network analyser. The maximum reflection loss (RL) of MnFe₂O₄/RGO composite is −32.8 dB at 8.2 GHz with the thickness of 3.5 mm, and the absorption bandwidth with the RL below −10 dB is up to 4.8 GHz (from 7.2 to 12 GHz). The results demonstrate that the introduction of RGO significantly enhances microwave absorption performance of the MnFe₂O₄. It is believed that such composite can be a powerful candidate in the field of microwave absorption.

Keywords:

• MnFe₂O₄
• Carbon materials
• Nanocomposite
• Electromagnetic properties