Structural stability of a colloidal solution of Ca(OH) 2nanocrystals exposed to high relative humidity conditions

L. S. Gomez-Villalba, P. López-Arce, M. Alvarez De Buergo, R. Fort

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

42 Citas (Scopus)

Resumen

The effect of high relative humidity (90% and 75% RH) on phase transformation and stability of CaCO3 polymorphs has been studied based on the structural and morphological changes from a colloidal solution based on Ca(OH)2 nanocrystals. Carbonation process has been confirmed indicating differences in nucleation and stability of CaCO3 polymorphs as a function of RH. Local fluctuations in the water/alcohol ratio significantly affect the precipitation/ dissolution of anhydrous and hydrated polymorphs that are reflected in the particle size. Changes in lattice parameters and particle size are related to surface tension fluctuations, release of residual water and time of exposure. These results highly contribute to evaluate the stability of the Ca(OH)2nanoparticles in high humidity conditions.

Idioma originalInglés
Páginas (desde-hasta)1249-1254
Número de páginas6
PublicaciónApplied Physics A: Materials Science and Processing
Volumen104
N.º4
DOI
EstadoPublicada - sep 2011

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