Issue 93, 2017
From the journal:

Chemical Communications

Calcium carbonate crystallisation at charged graphite surfaces†

E. R. Ravenhill, ORCID logo a   M. Adobes-Vidal ORCID logo a  and  P. R. Unwin ORCID logo *a  

* Corresponding authors

a Department of Chemistry, University of Warwick, Gibbet Hill, Coventry, UK
E-mail: P.R.Unwin@warwick.ac.uk

Abstract

Calcium carbonate crystallisation on surfaces has been studied extensively due to its prominence in biomineralisation, but the role of surface charge in nucleation and growth is not well understood. We have employed potential-controlled Highly Oriented Pyrolytic Graphite (HOPG) surfaces to demonstrate the significant impact of surface charge on calcium carbonate crystallisation: at negatively charged HOPG surfaces, calcite, aragonite and vaterite all nucleate from high energy positively-charged crystal faces, contrasting with the stable (104) calcite planes nucleated at positively charged surfaces. These observations are explained and rationalised.

Graphical abstract: Calcium carbonate crystallisation at charged graphite surfaces

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Article information

DOI
https://doi.org/10.1039/C7CC07441G
Article type
Communication
Submitted
24 Sep 2017
Accepted
20 Oct 2017
First published
20 Oct 2017

Chem. Commun., 2017,53, 12552-12555

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Calcium carbonate crystallisation at charged graphite surfaces

E. R. Ravenhill, M. Adobes-Vidal and P. R. Unwin, Chem. Commun., 2017, 53, 12552 DOI: 10.1039/C7CC07441G

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