Influence of Phosphate Ions on the Stability of Amorphous Calcium Carbonate

Abstract:

Amorphous calcium carbonate (ACC) occurs with varying stabilities in different organisms. It is thought that the stability is influenced by certain ions and proteins. We describe here a study investigating the particular influence of phosphate ions on the stability of ACC. Synthesised ACC was treated with different concentrations of Na2HPO4 and molar ratios of PO4:Ca ≥ 12:1 were shown to be effective in preventing crystallisation of ACC to calcite. The nature of the resulting sample is discussed.

• Periodical: Key Engineering Materials (Volumes 309-311)
• Pages: 179-182
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.309-311.179
• Online since: May 2006
• Authors: S. Akhtar, J.E. Barralet, David Farrar, Adrian J. Wright
• Keywords: Amorphous Basic Calcium Carbonate, Amorphous Calcium Carbonate

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