| 초록 |
Nitrogen doped TiO2 photocatalysts were prepared by microwave treatment for investing the visible light photocatalytic activity. Surface properties of nitrogen doped TiO2 were analyzed by SEM, XPS, and XRD. For evaluating of the photocatalytic activity of the nitrogen doped TiO2, the removal capacity of toluene gas was also investigated under the LED visible light. The XPS results showed that the nitrogen composition onto TiO2 increased according to the amount of urea. Under the LED visible light, photocatalytic activity of 3 g-urea treated TiO2 (1 g-base) was highest than that of other urea treated TiO2. Improved photocatalytic activity of nitrogen doped TiO2 is attributable to the doped nitrogen anion which is helpful to reduce the band gap of TiO2. |
