COBAN DOPED TiO2/SiO2 - PHOTOCATALYTIC CHARACTERISTIC AND APPLICATION FOR CEPHALEXIN TREATMENT IN WATER ENVIRONMENT

Abstract

Removing residues of antibiotics and Cephalexin in water environment is a very difficult. Co-TiO2/SiO2
material has been tested to assess its ability to treat cephalexin. SiO2 has absorption properties and
large contact surface area suitable for impregnating TiO2. Cobalt with 0.9% concentration is doped in
TiO2/SiO2 material, which increases the photocatalytic ability of the material in visible light. Co-
TiO2/SiO2 samples provide Cephalexin degradation faster than un-doped samples. Cephalexin from an
initial concentration of 10 ppm was completely decomposed after 30 and 60 minutes of illumination
(10W, 365 nm) for 9Co-TiO2/SiO2 and 1Co -TiO2/SiO2 materials, respectively. Co-TiO2/SiO2 is one of
the promising materials for cephalexin removal in water with visible light.
Keywords: photocatalyst, TiO2, SiO2, Coban, Cephalexin, water environment