Atomic-scale investigation on the evolution of Tio2-anatase prepared by a sonochemical route and treated with NaOH

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

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

3 Citas (Scopus)

Resumen

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.

Idioma originalInglés
Número de artículo685
PublicaciónMaterials
Volumen13
N.º3
DOI
EstadoPublicada - 1 feb 2020
Publicado de forma externa

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