VISIBLE LIGHT-RESPONSIVE TITANIUM OXIDE-ACTIVATED CARBON COMPOSITE PHOTOCATALYST AND MANUFACTURING METHOD

摘要

PPROBLEM TO BE SOLVED: To obtain photocatalyst powder in high yield in a single stage by using a simple and safe process and apparatus. PSOLUTION: Titanium oxide-activated carbon composite powder in which nitrogen and fluorine are codoped is produced by a spray pyrolysis method. The amount of nitrogen to be doped is within 10-2,500 ppm and that of fluorine to be doped is within 10-5,000 ppm. The titanium oxide-activated carbon composite powder exhibits 20-50% absorbance when irradiated with the light having 400-550 nm wavelength and exhibits a high photocatalytic function when irradiated with visible light. PCOPYRIGHT: (C)2007,JPO&INPIT