The Library
Microscopic mechanism and kinetics of ice formation at complex interfaces : zooming in on kaolinite
Tools
Sosso, Gabriele C., Li, Tianshu, Donadio, Davide, Tribello, Gareth A. and Michaelides, Angelos (2016) Microscopic mechanism and kinetics of ice formation at complex interfaces : zooming in on kaolinite. The Journal of Physical Chemistry Letters, 7 (13). pp. 2350-2355. doi:10.1021/acs.jpclett.6b01013 ISSN 1948-7185.
|
PDF
WRAP-microscopic-mechanism-kinetics-ice-formation-complex-Sosso-2016.pdf - Published Version - Requires a PDF viewer. Download (1862Kb) | Preview |
Official URL: http://dx.doi.org/10.1021/acs.jpclett.6b01013
Abstract
Most ice in nature forms because of impurities which boost the exceedingly low nucleation rate of pure supercooled water. However, the microscopic details of ice nucleation on these substances remain largely unknown. Here, we have unraveled the molecular mechanism and the kinetics of ice formation on kaolinite, a clay mineral playing a key role in climate science. We find that the formation of ice at strong supercooling in the presence of this clay is about 20 orders of magnitude faster than homogeneous freezing. The critical nucleus is substantially smaller than that found for homogeneous nucleation and, in contrast to the predictions of classical nucleation theory (CNT), it has a strong two-dimensional character. Nonetheless, we show that CNT describes correctly the formation of ice at this complex interface. Kaolinite also promotes the exclusive nucleation of hexagonal ice, as opposed to homogeneous freezing where a mixture of cubic and hexagonal polytypes is observed.
Item Type: | Journal Article | |||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Subjects: | Q Science > QD Chemistry | |||||||||||||||
Divisions: | Faculty of Science, Engineering and Medicine > Science > Chemistry | |||||||||||||||
Library of Congress Subject Headings (LCSH): | Kaolinite -- Freezing, Nucleation | |||||||||||||||
Journal or Publication Title: | The Journal of Physical Chemistry Letters | |||||||||||||||
Publisher: | American Chemical Society | |||||||||||||||
ISSN: | 1948-7185 | |||||||||||||||
Official Date: | 7 July 2016 | |||||||||||||||
Dates: |
|
|||||||||||||||
Volume: | 7 | |||||||||||||||
Number: | 13 | |||||||||||||||
Page Range: | pp. 2350-2355 | |||||||||||||||
DOI: | 10.1021/acs.jpclett.6b01013 | |||||||||||||||
Status: | Peer Reviewed | |||||||||||||||
Publication Status: | Published | |||||||||||||||
Access rights to Published version: | Open Access (Creative Commons) | |||||||||||||||
Date of first compliant deposit: | 20 December 2017 | |||||||||||||||
Date of first compliant Open Access: | 20 December 2017 | |||||||||||||||
RIOXX Funder/Project Grant: |
|
Request changes or add full text files to a record
Repository staff actions (login required)
View Item |
Downloads
Downloads per month over past year