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

Abstract EN

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.