Table 2 The unit cell parameters for whitlockite- and apatite-related complex substituted calcium phosphates obtained at 700 °C
From: Immobilization of cesium from aqueous solution using nanoparticles of synthetic calcium phosphates
Samples index | M | Molar ratio CO32−/PO43− in initial solution | Crystal system | a, Å | c, Å |
|---|---|---|---|---|---|
I | Na | 0 | Trigonal | 10.430(8) | 37.358(2) |
II | 1 | Hexagonal | 9.395(8) | 6.901(5) | |
III | K | 0 | Trigonal | 10.430(2) | 37.391(2) |
IV | 1 | Hexagonal | 9.399(4) | 6.890(1) |