Synthesis and In Vitro Bioactivity of TiO₂ Nanorods

Abstract

Titanium dioxide (TiO₂) powders were synthesized by the hydrothermal method. The TiO₂ powders were composed of nanorods with dimensions of 10–18 nm and 60–180 nm in diameter and length, respectively. The in vitro bioactivity of the TiO₂ powders was examined by evaluation of hydroxyapatite (HAp) formation ability in simulated body fluid (SBF). The results showed that TiO₂ nanorods induced the formation of nanocrystalline HAp after soaking in SBF after 1 day rapidly. Our study indicates that TiO₂ nanorods are bioactive and might be used for preparation of new biomaterials.

Keywords:

• Bioactivity
• hydrothermal
• hydroxyapatite
• titanium dioxide

This study was financially supported by the National Natural Science Foundation of China (Grant No. 50672039), the Natural Science Foundation of Qingdao City (Grant No. 04-2-JZ-91), and the Natural Science Foundation of Qingdao University of Science and Technology (Grant No. 03Z02).