Cargando…

Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM

Early‐stage reaction mechanisms for aragonite‐promoting systems are relatively unknown compared to the more thermodynamically stable calcium carbonate polymorph, calcite. Using cryoTEM and SEM, the early reaction stages taking place during aragonite formation were identified in a highly supersaturat...

Descripción completa

Detalles Bibliográficos
Autores principales: Walker, Jessica M., Marzec, Bartosz, Nudelman, Fabio
Formato: Online Artículo Texto
Lenguaje:English
Publicado: John Wiley and Sons Inc. 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5656811/
https://www.ncbi.nlm.nih.gov/pubmed/28742941
http://dx.doi.org/10.1002/anie.201703158
_version_ 1783273769640394752
author Walker, Jessica M.
Marzec, Bartosz
Nudelman, Fabio
author_facet Walker, Jessica M.
Marzec, Bartosz
Nudelman, Fabio
author_sort Walker, Jessica M.
collection PubMed
description Early‐stage reaction mechanisms for aragonite‐promoting systems are relatively unknown compared to the more thermodynamically stable calcium carbonate polymorph, calcite. Using cryoTEM and SEM, the early reaction stages taking place during aragonite formation were identified in a highly supersaturated solution using an alcohol–water solvent, and an overall particle attachment growth mechanism was described for the system. In vitro evidence is provided for the solid‐state transformation of amorphous calcium carbonate to aragonite, demonstrating the co‐existence of both amorphous and crystalline material within the same aragonite needle. This supports non‐classical formation of aragonite within both a synthetic and biological context.
format Online
Article
Text
id pubmed-5656811
institution National Center for Biotechnology Information
language English
publishDate 2017
publisher John Wiley and Sons Inc.
record_format MEDLINE/PubMed
spelling pubmed-56568112017-11-01 Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM Walker, Jessica M. Marzec, Bartosz Nudelman, Fabio Angew Chem Int Ed Engl Communications Early‐stage reaction mechanisms for aragonite‐promoting systems are relatively unknown compared to the more thermodynamically stable calcium carbonate polymorph, calcite. Using cryoTEM and SEM, the early reaction stages taking place during aragonite formation were identified in a highly supersaturated solution using an alcohol–water solvent, and an overall particle attachment growth mechanism was described for the system. In vitro evidence is provided for the solid‐state transformation of amorphous calcium carbonate to aragonite, demonstrating the co‐existence of both amorphous and crystalline material within the same aragonite needle. This supports non‐classical formation of aragonite within both a synthetic and biological context. John Wiley and Sons Inc. 2017-08-15 2017-09-18 /pmc/articles/PMC5656811/ /pubmed/28742941 http://dx.doi.org/10.1002/anie.201703158 Text en © 2017 The Authors. Published by Wiley-VCH Verlag GmbH & Co. KGaA. This is an open access article under the terms of the Creative Commons Attribution (http://creativecommons.org/licenses/by/4.0/) License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
spellingShingle Communications
Walker, Jessica M.
Marzec, Bartosz
Nudelman, Fabio
Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM
title Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM
title_full Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM
title_fullStr Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM
title_full_unstemmed Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM
title_short Solid‐State Transformation of Amorphous Calcium Carbonate to Aragonite Captured by CryoTEM
title_sort solid‐state transformation of amorphous calcium carbonate to aragonite captured by cryotem
topic Communications
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5656811/
https://www.ncbi.nlm.nih.gov/pubmed/28742941
http://dx.doi.org/10.1002/anie.201703158
work_keys_str_mv AT walkerjessicam solidstatetransformationofamorphouscalciumcarbonatetoaragonitecapturedbycryotem
AT marzecbartosz solidstatetransformationofamorphouscalciumcarbonatetoaragonitecapturedbycryotem
AT nudelmanfabio solidstatetransformationofamorphouscalciumcarbonatetoaragonitecapturedbycryotem