FTIR studies on photocatalytic activity of Ti(IV)-doped calcium hydroxyapatite particles

► Ti(IV)-doped calcium hydroxyapatite particles (TiHap). ► The photocatalytic activity of TiHap particles was examined. ► The photocatalytic activity of TiHap particles is attributed to the production of dislocated OH−. ► The optimum temperature for inducing photocatalytic activity of TiHap is ca. 600 °C.