Solvothermal Synthesis of TiO2-Modified Hydroxyapatite Using Water-Isopropanol Solution

Abstract

We synthesized TiO2 nanoparticles dispersed hydroxyapatite (TiO2-modifed HAp) by solvothermal treatment of α-tricalcium phosphate (α-TCP) using water-isopropanol solution including tetraisopropyl orthotitanate (TTIP). Rod-shaped HAp with TiO2 nanoparticles were formed by solvothermal treatment. HAp formation decreased with increasing the isopropanol fraction in the solution with TTIP. With increasing the treatment period, the rate of HAp formation in sample increased. The aspect ratio of HAp decreased with increasing the isopropanol fraction in the solution. Synthesized TiO2-modifed HAp samples shows the photocatalytic decoloration of methylene blue under UV irradiation.