Calcium carbonate crystallization in tailored constrained environments

Calcium carbonate crystallization in tailored constrained environments Artículo Open/ Download Calcium-carbonate-crystallization.pdf (26.91Kb) Publication date 2015 Metadata Show full item record Cómo citar Beato, C. Cómo citar Calcium carbonate crystallization in tailored constrained environments Formato de cita APA ISO 690-2 Chicago MLA Vancouver . Copiar Cerrar  Author Beato, C. ; Fernández, M. S. ; Fermani, S. ; Reggi, M. ; Neira Carrillo, Andrónico ; Rao, A. ; Falini, G. ; Arias, J. L. ; Abstract Synthesis of inorganic particles using routes inspired by biomineralization is a goal of growing interest. Recently it was demonstrated that the size and geometry of crystallization sites are as important as the structure of charged templating surfaces to obtain particles with controlled features. Most biominerals are formed inside restricted, constrained or confined spaces where at least parts of the boundaries are cell membranes containing phospholipids. In this study, we used a gas diffusion method to determine the effect of different lecithin media on the crystallization of CaCO3 and to evaluate the influence of the spatial arrangement of lecithin molecules on templating CaCO3 crystal formation. By using inorganic synthesis, Raman spectroscopy, dynamic light scattering, electrochemical methods and scanning electron microscopy, we showed that the occurrence of surface-modified calcite crystals and diverse textured vaterite crystals reflects the geometry and spatial distribution of aqueous constrained spaces due to the lecithin assembly controlled by lecithin concentration in an ionized calcium chloride solution under a continuous CO2 diffusion atmosphere. This research shows that by tailoring the assembly of lecithin molecules, as micelles or reversed micelles, it is possible to modulate the texture, polymorphism, size and shape of calcium carbonate crystals. General note Artículo de publicación ISI Sin acceso a texto completo Patrocinador FONDECYT - Chilean Council for Science and Technology (CONICYT) 1120172 Agreement University of Bologna-University of Chile 5788 Identifier URI: https://repositorio.uchile.cl/handle/2250/134385 DOI: DOI: 10.1039/c5ce00783f Quote Item Crystengcomm Vol. 17 No. 31 2015 Collections Artículos de revistas