Preparation of Ce4+, Sb3+ -Codoped TiO2 Films in Electric Field Heating-Treatment

Titania is an important catalytic material for photo-catalytic applications, and the sol-gel process is one of the most appropriate technologies to prepare Ti02 thin films. In the present paper, the Ce4+, Sb3+ -codoped Ti02 films were prepared by sol-gel method, which were heat-treated with an applied electric filed. The phase transformation behavior of Ce4+, Sb3+ -codoped Ti02 film in the electric field heating-treatment was studied by XRD and AFM. It is found that the crystals were homogeneous and the average crystal size was about 60 nm. Studies of photo-catalytic degradation show that the photo-catalytic activity of Ce4+, Sb3+ -codoped Ti02 films heated to 500 °C in an applied electric field was higher.