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Monodispersed cube-like α-Fe2O3 with hollow interior structure was synthesized successfully by a facile hydrothermal method independent of surfactants or templates.The resultant hematite nanostructure was characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and superconducting quantum interference device magnetometer (SQUID).