▎ 摘　　要

A nanocomposite of graphene oxide supported by monodisperse rod-like alpha-Fe2O3 nanocrystals (GO/alpha-Fe2O3 nanocomposites) has been fabricated through a simple hydrolysis precipitation route in a water-ethanol system. The nanocomposites were characterized by X-ray diffraction, Raman spectra and transmission electron microscopy, respectively. The GO/alpha-Fe2O3 nanocomposites are GO nanosheets decorated randomly by alpha-Fe2O3 nanorods with diameters in the range of 3-5 nm and lengths of 20-30 nm, while only hollow alpha-Fe2O3 microspheres constructed by the radically oriented single-crystalline nanorods are observed in the absence of GO. Compared with pure alpha-Fe2O3 nanoparticles, alpha-Fe2O3/GO nanocomposites exhibited excellent photocatalytic activity as evident from the degradation of rhodamine B in water under UV irradiation. The superior photocatalytic activity performance of alpha-Fe2O3/GO nanocomposites could be attributed to the synergetic effect between the conducting GO nanosheets and monodisperse alpha-Fe2O3 nanorods.