Formation Mechanistism Study of TiO2 Film Comprising Nanotubes and Nanoparticles
- Received Date: 2011-08-24
- Anodization, TiO2 film, Nanotube
Abstract: A novel titanium dioxide (TiO2) film comprising both nanotubes and nanopaticles was fab-ricated by an anodization process of the modified titanium. The local electric field at the anodized surface was simulated and its influence on the morphology of the TiO2 film was discussed. The results show that the electric field strength is enhanced by the covering. The growth rate of TiO2 increases with the assist of the local electric field. However, TiO2 dis-solution is hindered since the local electric field prevents [TiF6]6- from diffusing. It means that the balance condition for the formation of nanotubes is broken, and TiO2 nanoparticles are formed. Moreover, the crystal structure of the TiO2 film was confirmed using X-ray diffraction and Raman analysis. The anatase is a main phase for the proposed film.
|Citation:||Di Yang, Yi-quan Wang, Guo-bin Ren, Shuai Feng, Yuan-yuan Chen, Wen-zhong Wang. Formation Mechanistism Study of TiO2 Film Comprising Nanotubes and Nanoparticles[J]. Chinese Journal of Chemical Physics , 2012, 25(1): 91-95. doi: 10.1088/1674-0068/25/01/91-95|