Immobilized Heteropolyacids with zeolite (MCM-41) to enhance photocatalytic performance of BiOBr

BiOBr composites modified phosphotungstic acid immobilized with zeolite have been synthesized via impregnation method in which BiOBr is the primary light-absorber and phosphotungstic acid acts as an electron accepter. Photocatalysts were characterized by X-ray diffractometry (XRD), Scanning electron microscopy (SEM) and UV-vis diffuse reflectance spectra (DRS). Photodegradation experimental results on the degradation of methyl orange showed that the samples exhibited superior photocatalytic property under visible light irradiation.