Photocatalytic Performance of H P W O /TiO Nanocomposite Encapsulated into Beta Zeolite under UV Irradiation in the Degradation of Methyl Orange.

In this work, neat and supported H P W O into nanocage of β-zeolite were synthesized. However, H P W O into nanocage of β-zeolite was synthesized via template synthesis method. In addition, TiO was supported on H P W O /β zeolite by impregnation method. The obtained materials were characterized by XRD, FT-IR, UV-Vis, FESEM and EDS techniques. Also, W and Ti contents of the catalyst were determined by ICP and EDS technique. The results reveal that the photocatalyst performance depends on catalyst loading, pH effect, and methyl orange concentration. Photocatalytic degradation of methyl orange follows a pseudo-first order kinetic. The chemical oxygen demand (COD) experimental proved mineralization of methyl orange. Another reason for degradation and mineralization of methyl orange is the absence of hydrazine at the end of reaction which is one of the photodecolorization products. The plausible mechanism for photodegradation of MO was proposed.