▎ 摘　　要

The magnesium ferrite nanorods/graphene (MgFe2O4 NR/G) composites were prepared by a facile one-step surfactant-assisted solvothermal method. The structure and morphology of as-prepared composite materials were characterized by electron microscopy, energy dispersive spectrometry, Raman spectrometry, X-ray diffraction, FT-IR and X-ray photoelectron spectroscopy. The homogeneous MgFe2O4 nanorods with a typical diameter of about 100nm were well distributed on graphene. The electromagnetic parameters were measured using a vector network analyzer. A minimum reflection loss (RL) of -40.3dB was observed at 14.9GHz with a thickness of 3mm, and the effective absorption frequency (RL<-10dB) ranged from 12.0 to 18.0GHz, indicating the remarkable microwave absorption performance of the MgFe2O4 NR/G composites. The absorbing property of as-obtained composites was better than that of the pure MgFe2O4 nanorods. The synergistic effect of MgFe2O4 and graphene was responsible for the enhanced absorbing performance.