The synthesis and spectroscopic characterization of nano calcium fluorapatite using tetra-butylammonium fluoride

Pure homogeneous nano sized biocompatible fluorapatite (FAp) particles were synthesized by a wet chemical procedure using water soluble tetra-butylammonium fluoride (TBAF) without using high temperatures and any purification processes. Combination of the Bragg's law and the plane-spacing equation for the two high intensity lines, namely, (0 0 2) and (3 0 0), gives a = 9.3531 Å, c = 6.8841 Å, confirms the identity of the highly crystalline synthetic material as well as its purity. The effect of various pH's in crystal formation and on their size was also evaluated. The calculated crystallinities were excellent with a rate around 5.0. The synthesized nano FAp was fully characterized by spectroscopic techniques (XRD, SEM, EDS, BET, FT-IR and ICP-AES). The nitrogen adsorption–desorption isotherm showed a type IV diagram and calculation of the surface area was investigated as well.

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► Highly pure synthesis, elimination of severe purifications.
► Highest degree of crystallinity was obtained.
► Synthesis without using high temperature or pressure.
► High efficiency and economically affordable.