Morphology-controlled synthesis of fluorapatite nano/microstructures via surfactant-assisted hydrothermal process

• FHAp crystals with controlled morphologies were achieved by double surfactants-assisted hydrothermal process.
• Synthesis process was rapid and facile.
• The solution pH, precursor concentration and F– content had influence on particle nucleation and growth.
• The possible growth process for various FHAp structures was proposed.

Uniform-large-sized F-substituted hydroxyapatite (FHAp) crystals with controllable morphologies were successfully synthesized via hydrothermal treatment by using double-facile surfactants. The products were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, Raman spectroscopy, field-emission scanning electron microscopy, and high-resolution transmission electron microscopy. It was found that the size and morphology of FHAp crystals were drastically influenced by pH, precursor concentration and F− content. The growth process was investigated by following time-dependent experiments. The possible growth process was also discussed.

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