TY - JOUR
T1 - Atomic-scale investigation on the evolution of Tio2-anatase prepared by a sonochemical route and treated with NaOH
AU - Dimas, Berenice Victoria
AU - Pérez, Isaías Hernández
AU - Febles, Vicente Garibay
AU - Arceo, Lucía Díaz Barriga
AU - Parra, Raúl Suárez
AU - Olvera, Jesús Noé Rivera
AU - Paz, Ricardo Luna
AU - Máximo, Dulce Viridiana Melo
AU - Reyes, Leonardo González
N1 - Publisher Copyright:
© 2020 by the authors.
PY - 2020/2/1
Y1 - 2020/2/1
N2 - 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.
AB - 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.
KW - Electron microscopy
KW - Metal oxides
KW - Sonochemistry
UR - http://www.scopus.com/inward/record.url?scp=85079595893&partnerID=8YFLogxK
U2 - 10.3390/ma13030685
DO - 10.3390/ma13030685
M3 - Artículo
AN - SCOPUS:85079595893
SN - 1996-1944
VL - 13
JO - Materials
JF - Materials
IS - 3
M1 - 685
ER -