Preparation of Efficient BiOBr/MIL‐88B(Fe) Composites with Enhanced Photocatalytic Activities

Abstract

ABSTRACT: In this study, a novel composite containing an iron based metal‐organic framework (MOF) and BiOBr was successfully synthesized by a simple method, and was fully characterized by X‐ray diffraction patterns, Fourier transform infrared spectra, UV‐vis diffuse reflectance spectra, and transmission electron microscopy. Moreover, the photocatalytic activities of BiOBr/MIL‐88B(Fe) composites and the pure materials were evaluated by measuring the degradation of Rhodamine B under visible light. The results show that the composite exhibits better photocatalytic activities than pure materials, which can be ascribed to the high adsorption capacity of MIL‐88B(Fe) and the enhanced separation of photogenerated charge carriers from assembly of MIL‐88B(Fe) on BiOBr. And the effects of various operating parameters such as catalyst dosage, medium pH, the mass ratio of BiOBr, and MIL‐88B(Fe) and the dye initial concentration on the degradation of RhB have been studied.