| Autor: |
Berenice Victoria Dimas, Isaías Hernández Pérez, Vicente Garibay Febles, Lucía Díaz Barriga Arceo, Raúl Suárez Parra, Jesús Noé Rivera Olvera, Ricardo Luna Paz, Dulce Viridiana Melo Máximo, Leonardo González Reyes |
| Jazyk: |
angličtina |
| Rok vydání: |
2020 |
| Předmět: |
|
| Zdroj: |
Materials, Vol 13, Iss 3, p 685 (2020) |
| Druh dokumentu: |
article |
| ISSN: |
1996-1944 |
| DOI: |
10.3390/ma13030685 |
| Popis: |
To date, the formation mechanisms of TiO2, as well as its heterostructures, have not been clarified. Moreover, detailed research on the transition from a tetragonal anatase phase to the monoclinic phase of the TiO2(B) phase and their interface structure has been quite limited until now. In the present study, we report on the sonochemical synthesis of TiO2-anatase with a crystallite size of 5.2 ± 1.5 nm under different NaOH concentrations via the hydrothermal method. The use of alkaline solution and the effect of the temperature and reaction time on the formation and structural properties of TiO2-anatase nanopowders were studied. The effects of NaOH concentration on the formation and transformation of titanate structures are subject to thermal effects that stem from the redistribution of energy in the system. These mechanisms could be attributed to three phenomena: (1) the self-assembly of nanofibers and nanosheets, (2) the Ostwald ripening process, and (3) the self-development of hollow TiO2 mesostructures. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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