Study on Photocatalytic Performance of Nb Doped Rutile TiO2 Treated by Ultrasonic

The thermal decomposition behavior of precursor of Nb doped rutile TiO2 were prepared by sol-gel method. With ultrasonic treatment of 100W and 30min were investigated in TG-DSC, XRD and DRS. It has been shown that ultrasonic treatment could be made use of the phase transition. The absorbing performance of Nb doped rutile TiO2 treated by ultrasonic was better than that of without treatment while wavelength above 400nm. It has been shown that Nb doped TiO2 powders(1.0%,850°C) treated by ultrasonic has been better photodegradation efficiency, and the degradation efficiency was 94.2% after 6h.