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Description:

The environmental problems caused by CO2 emissions endanger human lives. Under
these circumstances, carbon dioxide capture, utilization, and storage (CCUS) is likely
to reduce CO2 gas emissions with economic advantages. An application of CCUS is
the reinforcement of mechanically weak bio-based composite plastics. Needle-like
calcium carbonate crystals can potentially reinforce weak plastics. Moreover, the
synthesis of calcium carbonate via carbonation can reduce CO2 emissions. Here, we
review the development of synthetic methods for needle-like aragonite (which is a
polymorph of calcium carbonate crystals) using a gaseous CO2 for further
development of efficient synthetic conditions and precise control of morphology.
Various factors influencing the synthesis of aragonite have been discussed. These
include the temperature; degree of supersaturation of CaCO3; pH; additives; and
external stimuli such as high gravity, sound waves, and microbubbles. The estimated
elastic moduli of aragonite were anisotropic depending on the crystal direction. This
indicated the importance of controlling the long-axis direction of aragonite as a novel
reinforcement material.

Rights:

• In Copyright
  

Keyword: Calcium carbonate, Aragonite, Carbon dioxide, Reinforcement

Date published: 2025-02-03

Publisher: Japan Association of Mineralogical Sciences

Journal:

• Journal of Mineralogical and Petrological Sciences (ISSN: 13456296) vol. 120 issue. 1 240819

Funding:

Manuscript type: Publisher's version (Version of record)

MDR DOI:

First published URL: https://doi.org/10.2465/jmps.240819

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Updated at: 2025-02-27 08:30:21 +0900

Published on MDR: 2025-02-27 08:30:22 +0900