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Tailoring the morphology of hydroxyapatite particles using a simple solvothermal route

Research paper by Maïssa Dardouri, João Paulo Borges, Amel Dakhlaoui Omrani

Indexed on: 10 Dec '16Published on: 07 Dec '16Published in: Ceramics International



Abstract

Nanometric and sub-micrometric monodispersed hydroxyapatite (HAp) particles with different morphologies (spheres and rods) were synthesized via a simple solvothermal method using Ca(NO3)2·4H2O and P2O5 as starting materials without any requirement to use organic templates. The growth, evolution and purity of the nanoparticles were investigated by controlling the synthesis conditions, including the alkalinity and the temperature of the solvothermal treatment. The increasing of the alkaline ratio results in a great change of the elaborated particles’ morphology that evolved from anisotropic forms (nanorods, sub-micrometric rod) at pH 9, short rod particles at pH 9.5 to spherical ones at higher pH (pH≥10).

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