| Fabrication of doped TiO2 nanotube array films with enhanced photo-catalytic activity |
| Paper ID : 1067-UFGNSM-FULL |
| Authors: |
|
Naeimeh-Sadat Peighambardoust *1, Shahin Khameneh-asl2, Adib Khademi2 1Tabriz-Iran bahman Blvd. university of Tabriz 2University of Tabriz |
| Abstract: |
| In the present work, we investigate the N and Fe-doped TiO2 nanotube array film prepared by treating TiO2 nanotube array film with ammonia solution and anodizing in Fe(NO3)3 solution respectively. This method avoided the use of hazardous ammonia gas, or laborious ion implantation process. N and Fe-doped TiO2 nanotube arrays (TiO2 NTs) were prepared by electrochemical anodization process in 0.5 wt % HF aqueous solution. The anodization was performed at the conditions of 20 V and 20 min, Followed by a wet immersion in NH3.H2O (1M) for N-doping for 2 hr and annealing post-treatment at 450 °C. The morphology and structure of the nanotube films were characterized by field emission scanning electron microscope (FESEM) and EDX. UV-vis. illumination test were done to observe photo-enhanced catalysis. The effect of different annealing temperature on the structure and photo-absorption property of the TiO2-TNTs was investigated. The results showed that N-TNTs nanotubes exhibited higher photocatalytic activity compared whit the Fe-doped and pure TNTs, because doping N promoted the separation of the photogenerated electrons and holes. |
| Keywords: |
| Anodization, N-doping, NH3.H2O immersion, Fe-doping, Fe(NO3)3 solution. |
| Status : Paper Accepted (Oral Presentation) |
