Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages

[Image: see text] A nonclassical multistep pathway involving bottom-up and break-down stages for the evolution of calcite nanograins ∼50 nm in size was demonstrated in a basic aqueous system. Calcite nanofibrils ∼10 nm wide were produced as the initial crystalline phase via amorphous calcium carbona...

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Autores principales: Takasaki, Mihiro, Kezuka, Yuki, Tajika, Masahiko, Oaki, Yuya, Imai, Hiroaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2017
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6645547/
https://www.ncbi.nlm.nih.gov/pubmed/31457424
http://dx.doi.org/10.1021/acsomega.7b01487
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author Takasaki, Mihiro
Kezuka, Yuki
Tajika, Masahiko
Oaki, Yuya
Imai, Hiroaki
author_facet Takasaki, Mihiro
Kezuka, Yuki
Tajika, Masahiko
Oaki, Yuya
Imai, Hiroaki
author_sort Takasaki, Mihiro
collection PubMed
description [Image: see text] A nonclassical multistep pathway involving bottom-up and break-down stages for the evolution of calcite nanograins ∼50 nm in size was demonstrated in a basic aqueous system. Calcite nanofibrils ∼10 nm wide were produced as the initial crystalline phase via amorphous calcium carbonate through ion-by-ion assembly by the carbonation of Ca(OH)(2) at a high pH of ∼13. Bundles ∼50 nm in diameter were then formed by the subsequent oriented attachment of the nanofibrils. Monodispersed calcite nanograins were finally obtained through spontaneous fragmentation of the fibrous forms via a decrease in pH by further carbonation.
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spelling pubmed-66455472019-08-27 Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages Takasaki, Mihiro Kezuka, Yuki Tajika, Masahiko Oaki, Yuya Imai, Hiroaki ACS Omega [Image: see text] A nonclassical multistep pathway involving bottom-up and break-down stages for the evolution of calcite nanograins ∼50 nm in size was demonstrated in a basic aqueous system. Calcite nanofibrils ∼10 nm wide were produced as the initial crystalline phase via amorphous calcium carbonate through ion-by-ion assembly by the carbonation of Ca(OH)(2) at a high pH of ∼13. Bundles ∼50 nm in diameter were then formed by the subsequent oriented attachment of the nanofibrils. Monodispersed calcite nanograins were finally obtained through spontaneous fragmentation of the fibrous forms via a decrease in pH by further carbonation. American Chemical Society 2017-12-15 /pmc/articles/PMC6645547/ /pubmed/31457424 http://dx.doi.org/10.1021/acsomega.7b01487 Text en Copyright © 2017 American Chemical Society This is an open access article published under an ACS AuthorChoice License (http://pubs.acs.org/page/policy/authorchoice_termsofuse.html) , which permits copying and redistribution of the article or any adaptations for non-commercial purposes.
spellingShingle Takasaki, Mihiro
Kezuka, Yuki
Tajika, Masahiko
Oaki, Yuya
Imai, Hiroaki
Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages
title Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages
title_full Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages
title_fullStr Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages
title_full_unstemmed Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages
title_short Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages
title_sort evolution of calcite nanocrystals through oriented attachment and fragmentation: multistep pathway involving bottom-up and break-down stages
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6645547/
https://www.ncbi.nlm.nih.gov/pubmed/31457424
http://dx.doi.org/10.1021/acsomega.7b01487
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