Issue 21, 2018

Reentrant phase transformation from crystalline ikaite to amorphous calcium carbonate

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

Supplementary files

Article information

Article type
Communication
Submitted
02 Feb 2018
Accepted
13 Apr 2018
First published
18 Apr 2018
This article is Open Access
Creative Commons BY license

CrystEngComm, 2018,20, 2902-2906

Reentrant phase transformation from crystalline ikaite to amorphous calcium carbonate

Z. Zou, L. Bertinetti, W. J. E. M. Habraken and P. Fratzl, CrystEngComm, 2018, 20, 2902 DOI: 10.1039/C8CE00171E

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