Preparation of Ce4+, Sb3+-Codoped TiO2 Films in Electric Field Heating-Treatment
来源期刊：JOURNAL OF RARE EARTHS2006年增刊第2期
论文作者：Zhou Feng Liang Kaiming
Key words：electric field; TiO2; photo-catalytic activity; rare earths;
Abstract: Titania is an important catalytic material for photo-catalytic applications, and the sol-gel process is one of the most appropriate technologies to prepare TiO2 thin films. In the present paper, the Ce4+, Sb3+-codoped TiO2 films were prepared by sol-gel method, which were heat-treated with an applied electric filed. The phase transformation behavior of Ce4+, Sb3+-codoped TiO2 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 TiO2 films heated to 500 ℃ in an applied electric field was higher.
Zhou Feng1，Liang Kaiming2
(1.College of Electromechanical and Materials Engineering, Dalian Maritime University, Dalian 116026, China;
2.Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, China)
Abstract:Titania is an important catalytic material for photo-catalytic applications, and the sol-gel process is one of the most appropriate technologies to prepare TiO2 thin films. In the present paper, the Ce4+, Sb3+-codoped TiO2 films were prepared by sol-gel method, which were heat-treated with an applied electric filed. The phase transformation behavior of Ce4+, Sb3+-codoped TiO2 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 TiO2 films heated to 500 ℃ in an applied electric field was higher.
Key words:electric field; TiO2; photo-catalytic activity; rare earths;
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