Darkins, Robert;
Duffy, Dorothy M;
Ford, Ian J;
(2024)
Prenucleation Cluster Pathway is Inconsistent with CaCO3 Kinetics.
Crystal Growth and Design
10.1021/acs.cgd.4c00092.
(In press).
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Abstract
It has been debated whether CaCO3 nucleates classically with the attainment of a critical cluster size or nonclassically with the restructuring of a prenucleation cluster (PNC). Here, we determine from the nucleation kinetics of CaCO3 that the transition state is composed of about 10 formula units, irrespective of the supersaturation. Crucially, the size of the transition state is considerably smaller than the average PNC size estimated from experimental characterization. This size discrepancy suggests the PNCs are uninvolved in nucleation, and the kinetics indicate that if CaCO3 nucleates classically, the transition state must be an abnormally unstable (antimagic) cluster.
| Type: | Article |
|---|---|
| Title: | Prenucleation Cluster Pathway is Inconsistent with CaCO3 Kinetics |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1021/acs.cgd.4c00092 |
| Publisher version: | http://dx.doi.org/10.1021/acs.cgd.4c00092 |
| Language: | English |
| Additional information: | Copyright © 2024 The Authors. Published by American Chemical Society. This publication is licensed under CC-BY 4.0. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10191734 |
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