Facile template-free synthesis of carbonated hydroxyapatite spheres in aqueous solution

Abstract

Prickly carbonated hydroxyapatite(CHAp) spheres were obtained via a facile template-free self-assembly method with Na₂HPO₄ and self-made cubic CaCO₃ as reactants. X-ray diffraction results of the product revealed CHAp with high crystallinity could be successfully prepared in a short reaction time. A nucleation mechanism was proposed according to the results of characterizing the resultant powders and analyzing the growth process. It shows that the self-made CaCO₃ particles play an important role in the template-free synthesis of prickly spheres.

Keywords

Template-free synthesis / Self-assembly / CaCO₃ / Carbonated hydroxyapatite / Prickly sphere / Low temperature

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