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

研究成果: Article査読

9 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)8997-9001
ページ数5
ジャーナルACS Omega
2
12
DOI
出版ステータスPublished - 2017 12月 31

ASJC Scopus subject areas

  • 化学 (全般)
  • 化学工学(全般)

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