INVESTIGADORES
ALDABE Sara Alfonsina
artículos
Título:
Parameters involved in the sol-gel transition of titania in reverse micelles
Autor/es:
N. FRANCOIS; B. GINZBERG; ALDABE BILMES, S
Revista:
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 1998 vol. 13 p. 341 - 346
ISSN:
0928-0707
Resumen:
Titania nanoparticles and gels are synthesized in reverse micelles with either an ionic (AOT) or a nonionic (Triton X-100) surfactant in alkanes with low water contents. Acids were in some cases dissolved in the aqueous phase. Whereas the size of the sol nanoparticles is independent of the micellar composition, the kinetics of the sol-gel transition are not. The gelation time is shorter for the non-ionic surfactant and becomes longer as the acid content in the water increases, and for smaller anions of equal charge.
