Abstract
α-Fe2O3 hollow spheres with novel multiple porous shells were successfully prepared by a facile solvothermal treatment of carbon spheres and FeCl3⋅6H2O in ethylene glycol at 200°C for 10h, followed by calcination in air at 500°C for 3h. X-ray powder diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM) were used to characterize the crystalline structure and morphology of the multi-shelled hollow spheres, and a possible growth mechanism of multiple shells was discussed. Furthermore, the as-obtained products exhibit enhanced visible-light photocatalytic activity for the degradation of rhodamine B (RhB) in the presence of H2O2.
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