| AVS 54th International Symposium | |
| Surface Science | Tuesday Sessions |
| Session SS-TuP |
| Session: | Surface Science Poster Session |
| Presenter: | H.P. Wang, National Cheng Kung University, Taiwan |
| Authors: | T.-L. Hsiung, National Cheng Kung University, Taiwan Y.Y. Hsu, National Cheng Kung University, Taiwan H.P. Wang, National Cheng Kung University, Taiwan |
| Correspondent: | Click to Email |
The TiO2 nanotube thin films were synthesized using ZnO nanorods as a template on the silica substances. By scanning electron microscopy (SEM), the TiO2 nanotube thin films having a pore opening of about 200 nm were observed. Experimentally, the TiO2 nanotube thin films have a very high activity in photocatalytic degradation of 2-chlorophenl (2CP) (220 mg/gTiO2 hr) under UV/Uis irradiation. By pre-edge X-ray absorption near edge spectroscopy (XANES), the photoactive species may be distinguished in three titanium structures such as A1 (TiO4), A2 ((TiO4)=O), and A3 (TiO6). Interestingly, the A2 species with a Ti=O and four Ti-O bonds to form a polyhedron in the TiO2 nanotube thin films might be the main active sites involved in the photocatalytic degradation of 2CP. The TiO2 nanotube thin films were also used in photocatalytic degradation of toxic pollutants such spill oils in the harbor or seashores.