Issue 10, 2019

Incorporation of organic and inorganic impurities into the lattice of metastable vaterite

Abstract

Vaterite is the least thermodynamically stable and the least abundant anhydrous crystalline phase of calcium carbonate. It is also the least well understood, as its crystal structure is still a matter of debate. Here we consider a new structural aspect of vaterite not previously described: its ability to sustain high strains via intracrystalline incorporation of aspartic acid and via substitution of Mg or Ba for Ca. We report, for the first time, the formation of substituted Mg- and Ba-vaterite, and their dependence on substituted impurity levels as detected by X-ray diffraction and Raman spectroscopy. Mg was substituted for up to 12% of Ca, and Ba for up to 2.5% of Ca, to form crystals of Mg-vaterite and Ba-vaterite with lattice distortions of up to 0.9% and 0.14%, respectively.

Graphical abstract: Incorporation of organic and inorganic impurities into the lattice of metastable vaterite

Supplementary files

Article information

Article type
Research Article
Submitted
10 Jul 2019
Accepted
13 Aug 2019
First published
14 Aug 2019

Inorg. Chem. Front., 2019,6, 2696-2703

Incorporation of organic and inorganic impurities into the lattice of metastable vaterite

E. Seknazi, S. Mijowska, I. Polishchuk and B. Pokroy, Inorg. Chem. Front., 2019, 6, 2696 DOI: 10.1039/C9QI00849G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements