Microwave‐Solvothermal Synthesis of Nanostructured BiOBr with Excellent Visible‐Light Photocatalytic Properties

Abstract

Novel BiOBr hierarchical microspheres have been successfully prepared via a facile microwave‐assisted solvothermal route and used for visible‐light photocatalytic degradation of RhB. The phase and morphology of the products were characterized by powder X‐ray diffraction (XRD), thermogravimetric analysis (TG), scanning electron microscopy (SEM), BET, and UV‐vis diffuse reflectance spectra. The SEM observations displayed that BiOBr flower‐like nanostructure assembled from nanosheets. The BiOBr flower‐like nanostructure, with a narrow band gap (2.63 eV), shows excellent photocatalytic activity in the degradation of RhB dye under visible‐light, much higher than those of BiOBr nanosheet and P25 photocatalysts.