| Abstract
| - Bright visible photoluminescence was observed from nanotube titania prepared by a soft chemical process. This photoluminescence comes from the Ti−OH complex within the tubular structure. Therefore, the one-dimensional tubular structure is a very important factor for nanotube titania to obtain strong photoluminescence.
- Bright visible photoluminescence was observed from nanotube titania (or dehydrated nanotube titanicacid) prepared by a soft chemical process. Its photoluminescence comes from the Ti−OH complex withinthe tubular structure. With the improvement of the crystalline structure and the desorption of physicallyadsorbed water on the inner and outer surfaces of the nanotube titania by annealing below 662 K, thephotoluminescence intensity is enhanced. However, the intensity decreases dramatically if the tubularstructure is destroyed at higher annealing temperature, and simultaneously Ti−OH bonds within thenanotube titania are broken. Therefore, the one-dimensional tubular structure is a very important factorfor nanotube titania to obtain strong photoluminescence.
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