Visible-light photocatalytic behavior of two different N-doped TiO2
| Autor: | Yan Wang, Zhensheng Jin, Zhishen Wu, Jiwei Zhang, Zhijun Zhang |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Anatase
Materials science business.industry Doping General Physics and Astronomy Surfaces and Interfaces General Chemistry Condensed Matter Physics Photochemistry Surfaces Coatings and Films Titanium oxide Reaction rate constant Optics Phase (matter) X-ray crystallography Photocatalysis Diffuse reflection business |
| Zdroj: | Applied Surface Science. 254:4462-4466 |
| ISSN: | 0169-4332 |
| Popis: | The visible-light photocatalytic behavior of two different N-doped TiO2 correlated with their physicochemical properties was investigated. The results show that N-TiO2-1, prepared by a novel TiO2 with unique defect structure, is more active in visible-light photocatalytic oxidation of C3H6 than N-TiO2-2, prepared by standard P25-TiO2 (Degussa). The specific rate constant of the former is ca. 5 times that of the latter. One model of photoactive center (Vo–NO–Ti) in anatase phase responsible for the visible-light photocatalytic activity is proposed. The higher the Vo–NO–Ti concentration is, the better the visible-light photocatalytic activity is. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect