Preparation of TiO₂-coated Hydroxyapatite Single Crystals

TiO₂-coated hydroxyapatite single crystals were prepared by hydrolysis of Ti-bearing dicalcium phosphate powder. On the surface of the TiO₂-coated hydroxyapatite single crystals, TiO₂ regions and hydroxyapatite regions can function as photocatalysts and adsorbents for organic contaminants, respectively, allowing simultaneous decomposition of organic contaminants by the photocatalysis of TiO₂ under irradiation. Therefore, the TiO₂-coated hydroxyapatite single crystals can favorably be applied for antibacterial applications and environmental purification.