Preparation of Ag@ AgCl Supported TiO_2 Plasma Photocatalysts and Photocatalytic Degradation of Chloramphenicol

The anatase TiO2 was prepared by steam heating method.AgCl nanoparticles were then loaded onto the TiO2 via deposition-precipitation,and some of the Ag+ particles were reduced to Ag particles by photo reduction method.Ag@AgCl supported TiO2 plasma photocatalysts can be obtained.The products are characterized by XRD,TEM and DRS spectroscopy.The photocatalytic activity is evaluated using chloramphenicol(CAP) degradation under UV and visible light irradiation.The results indicate that the Ag@AgCl supported TiO2 plasma photocatalysts significantly improve the photocatalytic degradation of CAP performance.The degradation rate is about 95% after high-pressure mercury lamp irradiation of CAP solution of 50 mg/L for 30 min,and 60% after Xe lamp irradiation of CAP solution of 50 mg/L for 180 min.