▎ 摘　　要

Face-centered cubic alpha-LiFeO2 and spinel beta-LiFe5O8 with uniform size and high dispersion have been successfully assembled on 2D graphene sheets via a facile one-pot strategy under different reaction conditions. The reduction of GO by this method is effective and comparable to conventional methods, which was confirmed by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), Raman spectroscopy and X-ray photoelectron spectroscopy (XPS). The structure of the products can be easily controlled by changing the solvent and reaction temperature. It was shown that the as-formed b-LiFe5O8 and a-LiFeO2 nanocrystals with a diameter of ca. 5 nm and 7 nm, respectively, were densely and uniformly anchored on the graphene sheets, and as a result, the aggregation of the nanoparticles was effectively prevented. The investigation of the microwave absorbability reveals that the alpha-LiFeO2-GN and beta-LiFe5O8-GN nanocomposites exhibit excellent microwave absorbability, which is stronger than that of the corresponding alpha-LiFeO2 and beta-LiFe5O8 nanostructures, respectively.