Τhe role of surface energy in the apparent solubility of two different calcite crystal habits.

ABSTRACT: The interplay between polymorphism and facet-specific surface energy on the dissolution of crystals is examined in this work. It is shown that, using cationic additives, it is possible to produce star-shaped calcite crystals at very high supersaturations. In crystallization processes following the Ostwald rule of stages these star-shaped crystals appear to have higher solubility than both their rhombohedral counterparts and needle-shaped aragonite crystals. The vapour pressures of vaterite, aragonite, star-shaped calcite and rhombohedral calcite crystals are measured using thermogravimetric analysis and the corresponding enthalpies of melting are obtained. Using inverse gas chromatography, the surface energy of the aforementioned crystals is measured as well and the surface energy of the m

SUBMITTER: Hadjittofis E 

PROVIDER: S-EPMC8385356 | biostudies-literature | 2021 Aug

REPOSITORIES: biostudies-literature