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

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

doi:10.1039/c6ra09452j

Abstract

Single-crystalline calcite nanorods elongated in the c direction formed through 1D oriented attachment of nanoblocks.

Highlights

The oriented attachment of calcite, which is a main component of biominerals, was experimentally demonstrated in an aqueous system at ambient temperatures
We demonstrate the controllable oriented attachment of CaCO3 nanocrystals in an aqueous system by changing the basicity and collision frequency at ambient temperatures
The biogenic CaCO3 crystals are composed of bridged nanograins that are arranged in the same crystallographic direction

Summary

Introduction

The oriented attachment of calcite, which is a main component of biominerals, was experimentally demonstrated in an aqueous system at ambient temperatures. Ac.jp bInstitute of Low Temperature Science, Hokkaido University, Kita-19, Nishi-8, Kita-ku, Sapporo, Hokkaido 060-0819, Japan discussed the non-classical routes for ionic crystals, such as carbonates and sulfates in aqueous solutions.[9,10,11] oriented attachment was proposed on the basis of the presence of the single-crystalline con guration. SEM and TEM observation of the nal morphology cannot be direct experimental evidence of the oriented attachment of ionic crystals.

Results

Conclusion