Use of Ion Exchange to Regulate the Heterogeneous Ice Nucleation Efficiency of Mica

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

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Author(s)

  • Shenglin Jin
  • Yuan Liu
  • Malte Deiseroth
  • Jie Liu
  • Ellen H. G. Backus
  • Hui Li
  • Han Xue
  • Lishan Zhao
  • Mischa Bonn
  • Jianjun Wang

Detail(s)

Original languageEnglish
Pages (from-to)17956-17965
Journal / PublicationJournal of the American Chemical Society
Volume142
Issue number42
Online published27 Sep 2020
Publication statusPublished - 21 Oct 2020
Externally publishedYes

Abstract

Heterogeneous ice nucleation (HIN) triggered by mineral surfaces typically exposed to various ions can have a significant impact on the regional atmosphere and climate. However, the dependence of HIN on the nature of the mineral surface ions is still largely unexplored due to the complexity of mineral surfaces. Because K+ on the atomically flat (001) surface of mica can be readily replaced by different cations through ion exchange, muscovite mica was selected; its simple nature provides a very straightforward system that can serve as the model for investigating the effects of mineral surface ions on HIN. Our experiments show that the surface (001) of H+-exchanged mica displays markedly higher HIN efficiencies than that of Na-/K-mica. Vibrational sum-frequency generation spectroscopy reveals that H-mica induces substantially less orientation ordering than Na-/K-mica within the contact water layer at the interface. Molecular dynamics simulations suggest that the HIN efficiency of mica depends on the positional arrangement and orientation of the interfacial water. The formation of the hexagonal ice Ih basal-type structure in the first water layer atop the mica surface facilitates HIN, which is determined by the size of the protruding ions atop the mica surface and by the surface adsorption energy. The orientational distribution is optimal for HIN when 25% of the water molecules in the first water layer atop the mica surface have one OH group pointing up and 25% have one OH group pointing down, which, in turn, is determined by the surface charge distribution.

Citation Format(s)

Use of Ion Exchange to Regulate the Heterogeneous Ice Nucleation Efficiency of Mica. / Jin, Shenglin; Liu, Yuan; Deiseroth, Malte; Liu, Jie; Backus, Ellen H. G.; Li, Hui; Xue, Han; Zhao, Lishan; Zeng, Xiao Cheng; Bonn, Mischa; Wang, Jianjun.

In: Journal of the American Chemical Society, Vol. 142, No. 42, 21.10.2020, p. 17956-17965.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review