An acid resistant fluoroapatite coated titanium dioxide (FAp-TiO
2) was synthesized by adding a fluoride ion (F
-) to hydroxyapatite (HAp), in order to avoid dissolution of the HAp at an acidic atmosphere. In this study, the optimization of synthetic conditions of FAp-TiO
2 was investigated in terms of the amount of the fluorine (F
-) added to the simulated body fluid, the reaction temperature and the time. The addition of F
- to simulated body fluid was performed after coating HAp on the surface of TiO
2 surface. The crystallinity of FAp phase generated on the TiO
2 was strongly affected by changing the reaction conditions. The optimized synthetic conditions of FAp-TiO
2 as photocatalyst were the addition of 0.25 mM-0.5 mM F
- in the fluid and then the reaction time for 3 h at 60°C. The adsorptivity and the photocatalytic activity of the FAp-TiO
2 in the optimum conditions were investigated using the butyric acid and trimethylamine as model solutions. Consequently, the FAp-TiO
2 could obtain higher adsorptivity and photocatalytic activity for trimethylamine, rather than the uncoated TiO
2.
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