Studies on Degradation of Dye Contamination using TiO2/zeolite Modified with Nanocomposite. Influence of the Substitution on Photocatalytic Behaviour

This research aimed to explain the preparation of functionalized-CeTPP/TiO2/Y zeolite in the degradation of dye contaminant. For this purpose, at first porphyrin ring is functionalized with OH groups with various ratios. Then the functionalized metal-porphyrin is encapsulated using the zeolite synthesis method. The entering of TiO2 is achieved by the impregnation method. The obtained photocatalyst systems are characterized by X-ray diffraction (XRD), Fourier transformation-infrared spectroscopy (FT-IR), field emission scanning electron microscopy (FESEM), and energy-dispersive X-ray (EDS) technique. It is found the functionalizing of the porphyrin ring with OH not only improved the photocatalytic behaviour but the reaction also can be occurred in the absence of H2O2. The effect of several parameters including catalyst loading, dye concentration, TiO2/CeTPP-Y on degradation yield is investigated. Mineralization of organic dye was studied by the Chemical Oxygen Demand (COD) experiment. It is found the kinetic of the photodegradation process is pseudo-first-order. However, the mechanism of the reaction has been proposed.