Issue 48, 2024

Two anti-acidification pathways for the dissolution process of aragonite in acidified artificial seawater with different additives: bonded with bicarbonate or hydrogen ions

Abstract

Two anti-dissolution mechanisms of aragonite in acidified artificial seawater were investigated by monitoring the dissolution process in the presence of organic and inorganic additives. Among them, the carboxyl functional group (RCOO) in PAA bonds with Ca2+ and bicarbonate, while strong protonation of silicates directly binds to hydrogen ions from bicarbonate. These interactions ultimately form stable polymer-rich amorphous calcium carbonate and dense silica layers on the surface of aragonite, effectively inhibiting further dissolution under dissolved CO2.

Graphical abstract: Two anti-acidification pathways for the dissolution process of aragonite in acidified artificial seawater with different additives: bonded with bicarbonate or hydrogen ions

Supplementary files

Article information

Article type
Communication
Submitted
22 Aug 2024
Accepted
22 Nov 2024
First published
25 Nov 2024

Phys. Chem. Chem. Phys., 2024,26, 29690-29695

Two anti-acidification pathways for the dissolution process of aragonite in acidified artificial seawater with different additives: bonded with bicarbonate or hydrogen ions

G. Li, Y. Su, Y. Cai, F. Xie, F. Yan, Z. Quan and Z. Zhang, Phys. Chem. Chem. Phys., 2024, 26, 29690 DOI: 10.1039/D4CP03290J

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