Abstract
Abstract Fluorinated TiO2 (F-TiO2) particles with good dispersion stability were synthesized at a temperature lower than 100 °C using fluorine gas. The average particle sizes and ζ potentials of F-TiO2 particles were around seven times smaller and 1.4 times larger, respectively, than those (2200 nm and −19.35 mV) of untreated TiO2 particles in water. However, the existence of TiOF2 prepared at a temperature higher than 100 °C might negatively affect the dispersion stability of TiO2. To prepare the fluorinated TiO2 without TiOF2, it is essential for optimizing the beneficial effects of surface fluorination against the dispersion stability of TiO2.
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