Enhanced photocatalytic activity of potassium-doped titania photocatalyst films with nanosheet structure
| Autor: | Kaowen Zhou, Liang Hao, Taito Watabe, Sujun Guan, Yanling Cheng, Yun Lu, Hiroyuki Yoshida |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Morphology (linguistics) Mechanical Engineering Potassium Doping Composite number chemistry.chemical_element 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences symbols.namesake Adsorption chemistry Chemical engineering Mechanics of Materials Photocatalysis symbols General Materials Science 0210 nano-technology Raman spectroscopy Nanosheet |
| Zdroj: | Materials Letters. 242:174-178 |
| ISSN: | 0167-577X |
| Popis: | Potassium-doped titania (K-doped TiO2) films had been prepared by molten-salt treatment in KNO3 for Ti-TiC coatings, containing different amount of TiC, in order to achieve enhanced activity of the films. When the amount of TiC is lower than 40%, the partial surface morphology of K-doped TiO2 films clearly shows a nanosheet structure, and the formed nanosheets could increase the accessible surface area. The results show that K-doped TiO2 with composite crystals has formed with different amount of TiC, and the relative Raman peak intensity of Ti-O-K bonding is highest for 40% TiC. Even avoiding high adsorption of K-doped TiO2 films, the films exhibit excellent and stable photocatalytic activity. With increasing the amount of TiC, the photocatalytic activity of K-doped TiO2 films first increases then decreases, reaching the highest for 40% TiC. |
| Databáze: | OpenAIRE |
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