Deep Undercooling of Aqueous Droplets on a Superhydrophobic Surface: The Specific Role of Cation Hydration,The Journal of Physical Chemistry Letters

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Deep Undercooling of Aqueous Droplets on a Superhydrophobic Surface: The Specific Role of Cation Hydration
The Journal of Physical Chemistry Letters ( IF 4.8 ) Pub Date : 2020-03-31 , DOI: 10.1021/acs.jpclett.0c00609
Alexandre M. Emelyanenko ₁ , Kirill A. Emelyanenko ₁ , Ludmila B. Boinovich ₁

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An extraordinary prolonged freezing delay was detected for the first time for deeply undercooled sessile droplets of aqueous solutions of alkali metal chlorides deposited onto a superhydrophobic surface. Accounting for the variation in the hydration energy of ions, their distribution in the vicinity of charged interfaces of solution/air and solution/superhydrophobic surface allows qualitative description of the observed ice nucleation kinetics and ionic specificity in freezing phenomena.

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