The Kinetics of Aragonite Formation from Solution via Amorphous Calcium Carbonate

Simon M. Clark; Vili Grigorova; Bruno Colas; Tamim A. Darwish; Kathleen Wood; Joerg Neuefeind; Dorrit E. Jacob

doi:10.3390/nano12234151

The Kinetics of Aragonite Formation from Solution via Amorphous Calcium Carbonate

Simon M. Clark, Vili Grigorova, Bruno Colas, Tamim A. Darwish, Kathleen Wood, Joerg Neuefeind, Dorrit E. Jacob

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

Magnesium doped Amorphous Calcium Carbonate was synthesised from precursor solutions containing varying amounts of calcium, magnesium, H₂O and D₂O. The Mg/Ca ratio in the resultant Amorphous Calcium Carbonate was found to vary linearly with the Mg/Ca ratio in the precursor solution. All samples crystallised as aragonite. No Mg was found in the final aragonite crystals. Changes in the Mg to Ca ratio were found to only marginally effect nucleation rates but strongly effect crystal growth rates. These results are consistent with a dissolution-reprecipitation model for aragonite formation via an Amorphous Calcium Carbonate intermediate.

Original language	English
Article number	4151
Journal	Nanomaterials
Volume	12
Issue number	23
DOIs	https://doi.org/10.3390/nano12234151
State	Published - Dec 2022
Externally published	Yes

Funding

We thank colleagues at the Department of Earth and Environmental Sciences at Macquarie University for technical support and fruitful discussions, specifically we are grateful to Russell Field, Will Powell and Norman Pearson. LA-ICPMS data were obtained using instrumentation funded by DEST Systemic Infrastructure Grants, ARC LIEF, NCRIS/AuScope, industry partners and Macquarie University. Aragonite and calcite reference samples were made available from the mineral collection of the Department of Earth and Planetary Sciences at Macquarie University. We thank the Australian Centre for Neutron Scattering for provision of beamtime on QUOKKA and Oak Ridge National Laboratory for provision of beam time on NOMAD. SMC and BC would like to acknowledge partial financial support from the Australian Nuclear Science and Technology Organization. DEJ acknowledges support from the Australian Research Council (DP210101268). We thank Andrew Whitten for assistance with measurements on QUOKKA. The National Deuteration Facility is partly supported by the National Collaborative Research Infrastructure Strategy an initiative of the Australian Government.

Funders	Funder number
DEST
Australian Nuclear Science and Technology Organisation
Australian Research Council	DP210101268
Macquarie University

Keywords

ACC
Laser-Ablation Inductively Coupled Plasma Mass Spectrometry
Mg/Ca
NOMAD
QUOKKA
Small Angle Neutron Scattering
X-ray diffraction
aragonite
neutron scattering
themo gravimetric analysis

Access to Document

10.3390/nano12234151

Cite this

@article{694c54885780446caaf854d75ed5d4e6,

title = "The Kinetics of Aragonite Formation from Solution via Amorphous Calcium Carbonate",

abstract = "Magnesium doped Amorphous Calcium Carbonate was synthesised from precursor solutions containing varying amounts of calcium, magnesium, H2O and D2O. The Mg/Ca ratio in the resultant Amorphous Calcium Carbonate was found to vary linearly with the Mg/Ca ratio in the precursor solution. All samples crystallised as aragonite. No Mg was found in the final aragonite crystals. Changes in the Mg to Ca ratio were found to only marginally effect nucleation rates but strongly effect crystal growth rates. These results are consistent with a dissolution-reprecipitation model for aragonite formation via an Amorphous Calcium Carbonate intermediate.",

keywords = "ACC, Laser-Ablation Inductively Coupled Plasma Mass Spectrometry, Mg/Ca, NOMAD, QUOKKA, Small Angle Neutron Scattering, X-ray diffraction, aragonite, neutron scattering, themo gravimetric analysis",

author = "Clark, {Simon M.} and Vili Grigorova and Bruno Colas and Darwish, {Tamim A.} and Kathleen Wood and Joerg Neuefeind and Jacob, {Dorrit E.}",

note = "Publisher Copyright: {\textcopyright} 2022 by the authors.",

year = "2022",

month = dec,

doi = "10.3390/nano12234151",

language = "English",

volume = "12",

journal = "Nanomaterials",

issn = "2079-4991",

publisher = "MDPI",

number = "23",

}

TY - JOUR

T1 - The Kinetics of Aragonite Formation from Solution via Amorphous Calcium Carbonate

AU - Clark, Simon M.

AU - Grigorova, Vili

AU - Colas, Bruno

AU - Darwish, Tamim A.

AU - Wood, Kathleen

AU - Neuefeind, Joerg

AU - Jacob, Dorrit E.

PY - 2022/12

Y1 - 2022/12

N2 - Magnesium doped Amorphous Calcium Carbonate was synthesised from precursor solutions containing varying amounts of calcium, magnesium, H2O and D2O. The Mg/Ca ratio in the resultant Amorphous Calcium Carbonate was found to vary linearly with the Mg/Ca ratio in the precursor solution. All samples crystallised as aragonite. No Mg was found in the final aragonite crystals. Changes in the Mg to Ca ratio were found to only marginally effect nucleation rates but strongly effect crystal growth rates. These results are consistent with a dissolution-reprecipitation model for aragonite formation via an Amorphous Calcium Carbonate intermediate.

AB - Magnesium doped Amorphous Calcium Carbonate was synthesised from precursor solutions containing varying amounts of calcium, magnesium, H2O and D2O. The Mg/Ca ratio in the resultant Amorphous Calcium Carbonate was found to vary linearly with the Mg/Ca ratio in the precursor solution. All samples crystallised as aragonite. No Mg was found in the final aragonite crystals. Changes in the Mg to Ca ratio were found to only marginally effect nucleation rates but strongly effect crystal growth rates. These results are consistent with a dissolution-reprecipitation model for aragonite formation via an Amorphous Calcium Carbonate intermediate.

KW - ACC

KW - Laser-Ablation Inductively Coupled Plasma Mass Spectrometry

KW - Mg/Ca

KW - NOMAD

KW - QUOKKA

KW - Small Angle Neutron Scattering

KW - X-ray diffraction

KW - aragonite

KW - neutron scattering

KW - themo gravimetric analysis

UR - http://www.scopus.com/inward/record.url?scp=85143598895&partnerID=8YFLogxK

U2 - 10.3390/nano12234151

DO - 10.3390/nano12234151

M3 - Article

AN - SCOPUS:85143598895

SN - 2079-4991

VL - 12

JO - Nanomaterials

JF - Nanomaterials

IS - 23

M1 - 4151

ER -

The Kinetics of Aragonite Formation from Solution via Amorphous Calcium Carbonate

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

Cite this