Water/ice phase transition: The role of zirconium acetate, a compound with ice-shaping properties - Sorbonne Université Access content directly
Journal Articles The Journal of Chemical Physics Year : 2017

Water/ice phase transition: The role of zirconium acetate, a compound with ice-shaping properties

Abstract

Few compounds feature ice-shaping properties. Zirconium acetate is one of the very few inorganic compounds reported so far to have ice-shaping properties similar to that of ice-shaping proteins, encountered in many organisms living at low temperature. When a zirconium acetate solution is frozen, oriented and perfectly hexagonal ice crystals can be formed and their growth follows the temperature gradient. To shed light on the water/ice phase transition while freezing zirconium acetate solution, we carried out differential scanning calorimetry measurements. From our results, we estimate how many water molecules do not freeze because of their interaction with Zr cations. We estimate the colligative properties of the Zr acetate on the apparent critical temperature. We further show that the phase transition is unaffected by the nature of the base which is used to adjust the pH. Our results provide thus new hints on the ice-shaping mechanism of zirconium acetate.
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Dates and versions

hal-01520211 , version 1 (10-05-2017)

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Moreno Marcellini, Francisco M. Fernandes, Dmytro Dedovets, Sylvain Deville. Water/ice phase transition: The role of zirconium acetate, a compound with ice-shaping properties. The Journal of Chemical Physics, 2017, 146 (14), pp.144504. ⟨10.1063/1.4979845⟩. ⟨hal-01520211⟩
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