The composite photocatalyst WO3/rGO/BiOBr(WRB) was prepared by solvothermal method. BiOBr was assembled into the WO3 nanotube beam loaded with rGO. WRB was characterized by X-ray diffraction(XRD). scanning electron microscopy(SEM). https://megavitamines.shop/product-category/prenatal-multivitamins/