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

Mihiro Takasaki; Yuki Kezuka; Masahiko Tajika; Yuya Oaki; Hiroaki Imai

doi:10.1021/acsomega.7b01487

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

Mihiro Takasaki, Yuki Kezuka, Masahiko Tajika, Yuya Oaki, Hiroaki Imai

Department of Applied Chemistry

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

4 Citations (Scopus)

Abstract

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.

Original language	English
Pages (from-to)	8997-9001
Number of pages	5
Journal	ACS Omega
Volume	2
Issue number	12
DOIs	https://doi.org/10.1021/acsomega.7b01487
Publication status	Published - 2017 Dec 31

ASJC Scopus subject areas

Chemistry(all)
Chemical Engineering(all)

Access to Document

10.1021/acsomega.7b01487

Fingerprint Dive into the research topics of 'Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation: Multistep Pathway Involving Bottom-Up and Break-Down Stages'. Together they form a unique fingerprint.

Cite this

@article{cc93998df25348bd84c5d66dc77c9c14,

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

abstract = "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.",

author = "Mihiro Takasaki and Yuki Kezuka and Masahiko Tajika and Yuya Oaki and Hiroaki Imai",

note = "Funding Information: This work was partially supported by the Kato Foundation for Promotion of Science (KS-2806), Grant-in-Aid for Challenging Exploratory Research (15K14129), and Grant-in-Aid for Scientific Research (A) (16H02398) from Japan Society for the Promotion of Science.",

year = "2017",

month = dec,

day = "31",

doi = "10.1021/acsomega.7b01487",

language = "English",

volume = "2",

pages = "8997--9001",

journal = "ACS Omega",

issn = "2470-1343",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Evolution of Calcite Nanocrystals through Oriented Attachment and Fragmentation

T2 - Multistep Pathway Involving Bottom-Up and Break-Down Stages

AU - Takasaki, Mihiro

AU - Kezuka, Yuki

AU - Tajika, Masahiko

AU - Oaki, Yuya

AU - Imai, Hiroaki

N1 - Funding Information: This work was partially supported by the Kato Foundation for Promotion of Science (KS-2806), Grant-in-Aid for Challenging Exploratory Research (15K14129), and Grant-in-Aid for Scientific Research (A) (16H02398) from Japan Society for the Promotion of Science.

PY - 2017/12/31

Y1 - 2017/12/31

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85048734321&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85048734321&partnerID=8YFLogxK

U2 - 10.1021/acsomega.7b01487

DO - 10.1021/acsomega.7b01487

M3 - Article

AN - SCOPUS:85048734321

VL - 2

SP - 8997

EP - 9001

JO - ACS Omega

JF - ACS Omega

SN - 2470-1343

IS - 12

ER -

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

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Cite this