Photocatalytic Oxidation of Rhodamine 6G Dye Using Magnetic TiO2@Fe3O4/FeZSM-5

Efficient decolorization of Rhodamine 6G dye (Rh 6G) using magnetic TiO2@Fe3O4/FeZSM-5 photocatalyst was carried out in a batch reactor equipped with two visible lights (high-pressure Na lamps). The synthesized and characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, diffuse reflectance spectroscopy vibrating sample magnetometry. effects initial Rh concentration, catalyst loading, pH were investigated on photocatalytic oxidation 6G. Maximum 98.2 % found at optimum conditions 20 ppm 6G, 1 g L–1 catalyst, 13.04. Central composite design used for the optimization degradation Predicted efficiencies to be good agreement experimental values high regression coefficient 98.8 %. In addition color removal, toxicity aqueous solution significantly reduced after oxidation. Small reduction activity (from 34.6 30.5 %) showed stability three consecutive runs. Due property it could removed from help external field. This prevents loss reduces extra separation cost, which is desired industrial or large-scale applications.