Preparation and Photocatalytic Activity of TiO₂/Tourmaline

Using Ti(OC₄H₉)₄ as raw material and tourmaline as support,TiO₂/tourmaline was synthesized via sol-gel method with ultrasound assisted,and the structure and performance of materials were characterized by XRD,UV-Vis DRS,FT-IR and SEM. The photocatalytic degradation of TNT was investigated by TiO₂/tourmaline under UV light irradiation. It has been found that the average crystalline grain size of TiO₂ was reduced and the grain size refined. The light was absorption band edge of TiO₂/tourmaline composites produced the red shift,and the ability to absorb light was improved in the visible area. Moreover,the photocatalytic activity of TiO₂/tourmaline was high and TiO₂/tourmaline had good performance of recycling.