| 초록 |
It is well known that TiO2 is one of the most effective photocatalysts and it has been applied for the purification of air and water. However, TiO2 photocatalysts operate only under UV light of wavelengths shorter than 400 nm which means only 3-5 % of the solar light that reaches the earth can be utilized. Recently, many studies have been devoted to the modification of TiO2 photocatalysts by the substitutional doping of metals or nonmetals in order to extend their absorption edge into the visible light region and to improve their photocatalytic activity. In this study, synthesis of highly vis-active Fe and nitrogen co-doped TiO2 nanoparticles, which can be applied to degrade various dyes, was investigated. TiO2 nanoparticles were prepared, and confirmed by UV-Vis, XRD, BET, TEM, XPS. Furthermore, photocatalytic degradation of various dyes (rodamine B, Indigo carmine, methylene blue, methyl orange) in aqueous solution under visible light was investigated. |
