2025 Volume 67 Issue 2 Pages 114-120
The effects of temperature and alkali metal ions on the structure and crystallization process of amorphous magnesium carbonate（AMC） were investigated using synchrotron X-ray total scattering and X-ray absorption fine structure（XAFS） spectroscopy. The pair distribution function（PDF） analysis revealed that no substantial structural differences were observed between AMCs synthesized at 20℃, 60℃, and 80℃. The presence of Na or K ions in the solution promotes the formation of nesquehonite, but the presence of Rb or Cs ions inhibits the long-range ordering of atoms and suppresses crystallization. These findings indicate that alkali metal ions play an important role in controlling the crystallization of AMC.
