1D oriented attachment of calcite nanocrystals: Formation of single-crystalline rods through collision

Mihiro Takasaki, Yuki Kimura, Tomoya Yamazaki, Yuya Oaki, Hiroaki Imai

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The oriented attachment of calcite, which is a main component of biominerals, was experimentally demonstrated in an aqueous system at ambient temperatures. Calcite nanoblocks ∼50 nm in size were prepared by carbonation of Ca(OH)2. One-dimensional (1D) alignment of the calcite nanoblocks was induced at ambient temperatures under a basic condition (pH ∼ 12), and single-crystalline rods over 1 m were then formed through elongation in the c direction. The oriented attachment of the nanoscale building blocks was enhanced by increasing the collision frequency with stirring of the system, but was halted under a neutral pH condition with further carbonation. The controllable non-classical growth mode of calcium carbonate nanocrystals would provide significant information for biogenic and biomimetic mineralization in aqueous solutions.

Original languageEnglish
Pages (from-to)61346-61350
Number of pages5
JournalRSC Advances
Volume6
Issue number66
DOIs
Publication statusPublished - 2016

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

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