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.
|Number of pages||4|
|Journal||Key Engineering Materials|
|Publication status||Published - 1 Jan 2006|
- amorphous calcium carbonate
- amorphous basic calcium carbonate