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Reentrant phase transformation from crystalline ikaite to amorphous calcium carbonate

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Abstract

We report the spontaneous transformation of highly hydrated crystalline ikaite into less hydrated amorphous calcium carbonate (ACC), which has the outer contours of micrometer-sized crystals, a multi-level interconnected porous structure and a very high specific surface area (98.3 cm2 g−1). The ikaite was previously obtained by transformation of an uncommon hydrated ACC with as much H2O as ikaite, synthesized at 2 °C without any additives. The solid-state amorphization was induced by the fast dehydration of the crystal.

Graphical abstract: Reentrant phase transformation from crystalline ikaite to amorphous calcium carbonate

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Publication details

The article was received on 02 Feb 2018, accepted on 13 Apr 2018 and first published on 18 Apr 2018


Article type: Communication
DOI: 10.1039/C8CE00171E
Citation: CrystEngComm, 2018, Advance Article
  • Open access: Creative Commons BY license
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    Reentrant phase transformation from crystalline ikaite to amorphous calcium carbonate

    Z. Zou, L. Bertinetti, W. J. E. M. Habraken and P. Fratzl, CrystEngComm, 2018, Advance Article , DOI: 10.1039/C8CE00171E

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