TiO₂ photocatalyst for water treatment

Abstract

Oxidation of contaminants in air and water was achieved by immobilized photocatalysts irradiated with low-intensity UV light which is inexpensive and poses less human health risk. Tiles and glass coated by TiO₂, which are applicable as building materials, have the ability to kill E. coli and other bacteria and to break down foul odor, stains, endotoxin of E. coli under irradiation at low intensity. Photocatalytic oxidation of 3-chlorophenol was also achieved using a ceramic honeycomb coated with TiO₂ powder in the circulated flow system under the irradiation at the intensity of 1.7mW/cm² at 360nm of light wavelength.