Thermal assisted self-organization of calcium carbonate

Gan Zhang, Cristobal Verdugo-Escamilla, Duane Choquesillo-Lazarte and Juan Manuel García-Ruiz ()
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Gan Zhang: Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)
Cristobal Verdugo-Escamilla: Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)
Duane Choquesillo-Lazarte: Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)
Juan Manuel García-Ruiz: Instituto Andaluz de Ciencias de la Tierra (CSIC-UGR)

Nature Communications, 2018, vol. 9, issue 1, 1-7

Abstract: Abstract Fabrication of mineral multi-textured architectures by self-organization is a formidable challenge for engineering. Current approaches follow a biomimetic route for hybrid materials based on the coupling of carbonate and organic compounds. We explore here the chemical coupling of silica and carbonate, leading to fabrication of inorganic–inorganic biomimetic structures known as silica-carbonate biomorphs. So far, biomorphic structures were restricted to orthorhombic barium, strontium, and calcium carbonate. We demonstrate that, monohydrocalcite a hydrous form of calcium carbonate with trigonal structure can also form biomorphic structures, thus showing biomorphic growth is not dictated by the carbonate crystal structure. We show that it is possible to control the growth regime, and therefore the texture and overall shape, by tuning the growth temperature, thereby shifting the textural pattern within the production of a given architecture. This finding opens a promising route to the fabrication of complex multi-textured self-organized material made of silica and chalk.

Date: 2018
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DOI: 10.1038/s41467-018-07658-0

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