Photoassisted Degradation of salicylic acid on the Dye Modified TiO۲ Particles

Photoassisted decomposition of salicylic acid solution are achieved on the surface of TiO۲semiconductor modified with Asceptichrome by using visible light. After ۴h of irradiation with two ۲۶W Osramlamps, over ۶۰% degradation of sample is achieved. A working mechanism involving excitation of surface bounddye, followed by charge injection into the TiO۲ conduction band is proposed.

کلیدواژه ها:

Dye sensitization ، visible light ، TiO۲ ، salicylic acid ، degradation ، Asceptichrome