The University of Southampton
University of Southampton Institutional Repository

A critical analysis of calcium carbonate mesocrystals

A critical analysis of calcium carbonate mesocrystals
A critical analysis of calcium carbonate mesocrystals
The term mesocrystal has been widely used to describe crystals that form by oriented assembly, and that exhibit nanoparticle substructures. Using calcite crystals co-precipitated with polymers as a suitable test case, this article looks critically at the concept of mesocrystals. Here we demonstrate that the data commonly used to assign mesocrystal structure may be frequently misinterpreted, and that these calcite/polymer crystals do not have nanoparticle substructures. Although morphologies suggest the presence of nanoparticles, these are only present on the crystal surface. High surface areas are only recorded for crystals freshly removed from solution and are again attributed to a thin shell of nanoparticles on a solid calcite core. Line broadening in powder X-ray diffraction spectra is due to lattice strain only, precluding the existence of a nanoparticle sub-structure. Finally, study of the formation mechanism provides no evidence for crystalline precursor particles. A re-evaluation of existing literature on some mesocrystals may therefore be required.
chemical sciences, inorganic chemistry, materials science
1-14
Kim, Yi-Yeoun
ed177168-8a34-4253-950e-5d0dfd0b0543
Schenk, Anna S.
d14e60dd-cd02-428c-9253-e56b898c8e13
Ihli, Johannes
8d6d802e-8eb8-4708-ace7-3134f3608018
Kulak, Alex N.
1b415d28-256b-44aa-a442-f622e179a336
Hetherington, Nicola B.J.
90a4e504-9e96-43f6-9ba1-7b67cc1f5219
Tang, Chiu C.
04121375-3fe8-451c-876c-2cf9f59fd495
Schmahl, Wolfgang W.
3fecd757-82ac-4c68-a57b-ed53e43a1fab
Griesshaber, Erika
7ce148a4-4dec-45f5-9584-2d855aa080da
Hyett, Geoffrey
4f292fc9-2198-4b18-99b9-3c74e7dfed8d
Meldrum, Fiona C.
74fd7c2e-1c1d-4b09-a6a9-eafbf6450f53
Kim, Yi-Yeoun
ed177168-8a34-4253-950e-5d0dfd0b0543
Schenk, Anna S.
d14e60dd-cd02-428c-9253-e56b898c8e13
Ihli, Johannes
8d6d802e-8eb8-4708-ace7-3134f3608018
Kulak, Alex N.
1b415d28-256b-44aa-a442-f622e179a336
Hetherington, Nicola B.J.
90a4e504-9e96-43f6-9ba1-7b67cc1f5219
Tang, Chiu C.
04121375-3fe8-451c-876c-2cf9f59fd495
Schmahl, Wolfgang W.
3fecd757-82ac-4c68-a57b-ed53e43a1fab
Griesshaber, Erika
7ce148a4-4dec-45f5-9584-2d855aa080da
Hyett, Geoffrey
4f292fc9-2198-4b18-99b9-3c74e7dfed8d
Meldrum, Fiona C.
74fd7c2e-1c1d-4b09-a6a9-eafbf6450f53

Kim, Yi-Yeoun, Schenk, Anna S., Ihli, Johannes, Kulak, Alex N., Hetherington, Nicola B.J., Tang, Chiu C., Schmahl, Wolfgang W., Griesshaber, Erika, Hyett, Geoffrey and Meldrum, Fiona C. (2014) A critical analysis of calcium carbonate mesocrystals. Nature Communications, 5, 1-14, [4341]. (doi:10.1038/ncomms5341).

Record type: Article

Abstract

The term mesocrystal has been widely used to describe crystals that form by oriented assembly, and that exhibit nanoparticle substructures. Using calcite crystals co-precipitated with polymers as a suitable test case, this article looks critically at the concept of mesocrystals. Here we demonstrate that the data commonly used to assign mesocrystal structure may be frequently misinterpreted, and that these calcite/polymer crystals do not have nanoparticle substructures. Although morphologies suggest the presence of nanoparticles, these are only present on the crystal surface. High surface areas are only recorded for crystals freshly removed from solution and are again attributed to a thin shell of nanoparticles on a solid calcite core. Line broadening in powder X-ray diffraction spectra is due to lattice strain only, precluding the existence of a nanoparticle sub-structure. Finally, study of the formation mechanism provides no evidence for crystalline precursor particles. A re-evaluation of existing literature on some mesocrystals may therefore be required.

Text
Mesocrystals_Ultimate_06-03-2014 #2 (2).docx - Author's Original
Download (5MB)

More information

Accepted/In Press date: 9 June 2014
e-pub ahead of print date: 11 July 2014
Published date: 11 July 2014
Keywords: chemical sciences, inorganic chemistry, materials science
Organisations: Chemistry

Identifiers

Local EPrints ID: 367463
URI: http://eprints.soton.ac.uk/id/eprint/367463
PURE UUID: 378f0973-ccfd-4371-a2b6-b3b016794922
ORCID for Geoffrey Hyett: ORCID iD orcid.org/0000-0001-9302-9723

Catalogue record

Date deposited: 30 Jul 2014 12:11
Last modified: 20 Feb 2020 01:32

Export record

Altmetrics

Contributors

Author: Yi-Yeoun Kim
Author: Anna S. Schenk
Author: Johannes Ihli
Author: Alex N. Kulak
Author: Nicola B.J. Hetherington
Author: Chiu C. Tang
Author: Wolfgang W. Schmahl
Author: Erika Griesshaber
Author: Geoffrey Hyett ORCID iD
Author: Fiona C. Meldrum

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×