Nonaqueous seeded growth of flower-like mixed-phase titania nanostructures for photocatalytic applications
| Autor: | Yu-Chuan Hsu, Chia-Min Yang, Chia-Hsiu Chen, Yi-Ting Liao, Huang-Ching Lin |
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| Rok vydání: | 2010 |
| Předmět: |
Anatase
Nanostructure Inorganic chemistry Condensed Matter Physics Electronic Optical and Magnetic Materials Catalysis Titanium oxide Inorganic Chemistry chemistry.chemical_compound Chemical engineering chemistry Rutile Benzyl alcohol Materials Chemistry Ceramics and Composites Photocatalysis Physical and Theoretical Chemistry Photodegradation |
| Zdroj: | Journal of Solid State Chemistry. 183:1917-1924 |
| ISSN: | 0022-4596 |
| DOI: | 10.1016/j.jssc.2010.06.016 |
| Popis: | A nonaqueous seeded-grown synthesis of three-dimensional TiO2 nanostructures in the benzyl alcohol reaction system was reported. The synthesis was simple, high-yield, and requires no structural directing or capping agents. It could be largely accelerated by applying microwave heating. The TiO2 nanostructures had a unique flower-like morphology and high surface area. Furthermore, the structural analyses suggested that the nanostructures had a non-uniform distribution of crystalline phases, with the inner part rich in anatase and the outer part rich in rutile. After heat treatments, the mixed-phase TiO2 nanostructures exhibited high photocatalytic activities for the photodegradation of methylene blue as compared to Degussa P25. The high photoactivities may be associated with the high surface area and the synergistic effect resulting from the anisotropic mixed-phase nanostructures. The results demonstrate the uniqueness of the nonaqueous seeded growth and the potential of the TiO2 nanostructures for practical applications. |
| Databáze: | OpenAIRE |
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