THE PHOTOCATALYTIC DEGRADATION OF PHENOL BY VISIBLE LIGHT ON TiO_2 FILM WITH Pt DOPING

A novel Pt/TiO2 photocatalytic nano material was prepared by chemical reduction of H2PtCl6 to dope the TiO2 film with Pt.The chemical and surface properties of this Pt/TiO2 photocatalytic material were characterized by XRD,XPS,UV-Vis,SEM.Its photocatalytic effect with visible light was tested in phenol degradation.The results showed that Pt/TiO2 significantly enhanced the photocatalytic activity in the visible light(420 nm).After photocatalysis for thirteen hours,the phenol degradation rate reached more than 90%.The intermediates during the degradation process were monitored by UV-Vis and HPLC,and its photocatalysed degradation pathway was proposed.