Vol. 5, Issue 1, Part B (2023)

In crystal chemistry, the apatite crystals is prepared by the dissolution precipitation reaction reaction, which led to HAP (hydroxyapatite; Ca₁₀(PO4)₆.(OH)₂) nanocrystals formation under hydrothermal condition from OCP (octacalcium phosphate; Ca₈(HPO₄)₂.(PO4)₄.5H₂O) at 180℃ for 3 hours with adjusted 5.5 pH range. The prepared solution is incorporating to dicarboxylate as succinate (OOC.(CH₂)₂.COO)₂- ions. During incorporating of succinate ions in OCP crystals, the hydrogen phosphate (HPO₄²-) ions in the hydrated layers of OCP are being substituted by succinate ions. These organically modified OCP which generated to HAP have unique hexagonal nanostructure with micrometer thickness are characterized by reporting of scanning electron microscopy (SEM), X-ray diffraction analysis, Fourier transform infrared (FTIR) spectra and Scherrer’s equation as well.