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Issue 44, 2013
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Calcite microrod arrays fabricated via anisotropic dissolution of calcite in the presence of NH4I and (NH4)2SO4

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Abstract

In this work, we studied the anisotropic dissolution process of geogenic calcite substrates in aqueous solution in the presence of ammonium iodide and ammonium sulfate. Arrays of calcite micropyramids elongated along the c axis of calcite and quadrangular and hexagonal transverse cross sections were obtained for the first time via anisotropic dissolution in undersaturated aqueous solutions in the presence of ammonium iodide and ammonium sulfate, respectively. The anisotropic dissolution and the formation process of the micropyramids were tracked with SEM after different dissolution times. It is found that the heights of the micropyramids increase with the increase of the dissolution time and the concentration of the ammonium salts.

Graphical abstract: Calcite microrod arrays fabricated via anisotropic dissolution of calcite in the presence of NH4I and (NH4)2SO4

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Supplementary files

Article information


Submitted
24 Jun 2013
Accepted
04 Aug 2013
First published
12 Aug 2013

CrystEngComm, 2013,15, 8867-8873
Article type
Communication

Calcite microrod arrays fabricated via anisotropic dissolution of calcite in the presence of NH4I and (NH4)2SO4

R. Meng, Y. Ma, X. Long, D. Yang and L. Qi, CrystEngComm, 2013, 15, 8867
DOI: 10.1039/C3CE41222A

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