Work

Dissolution Kinetics of Solid Particles and the Role of Aggregation: Vaterite Dissolution

Year: 2025

Type: article

Abstract: High Resolution Image Download MS PowerPoint Slide We report the dissolution kinetics and mechanism of dimeric and larger aggregates of quasi-spherical particles of spherulitic vaterite, CaCO 3, showing that dissolution occurs under thermodynamic control for all species, as seen for the corresponding monomeric species. While the dissolution rate measured via the variation of the projected two-dimensional area with time is, within experimental error, identical for all species, the dissolution time scale required for complete dissolution increases proportionally with particle size. We conclude that the time scale of complete dissolution time scale reflects the extent of aggregation, the solubility of vaterite, and the diffusion coefficient of the dissolved species. Generic inferences on the role of aggregation on the dissolution kinetics of solid particles are drawn.

Source: The Journal of Physical Chemistry C

DOI: 10.1021/acs.jpcc.5c01202

Authors: Morgan P. Milner, Haotian Chen, Jake M. Yang, Richard G. Compton

Institutions: University of Oxford, University of Michigan, University of Leicester

Language: English

Topic: Calcium Carbonate Crystallization and Inhibition

Subfield: Biomaterials

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $4,500

OpenAlex ID: W4408817342

FWCI: 0.751

Cites: 32

Cited by: 4

Related to: 10