Photocatalytic Degradation of 2, 4-dichlorophenol using N-doped SnO2/TiO2 Thin Film Coated Glass Fibers

摘要

Photocatalytic degradation of 2,4-dichlorophenol (2,4-DCP) contaminant in water was investigated. Composite SnO2/TiO2 films N-doped to varying degrees were prepared via sol-gel method, and coated on glass fibers by dipping method. The effects of nitrogen-doping on coating morphology, physical properties, and glyphosate degradation rates were experimentally determined. Nitrogen-doping shifted absorption wavelengths and narrowed the energy band gap, enhancing photocatalytic performance. The maximum efficiency of 2,4-DCP degradation was up to 93.65% for 12 h of 40N/SnO2/TiO2 composite film. The near optimal 40N/SnO2/TiO2 composite thin film exhibited about 4 folds degradation rates relative to pure TiO2, and should perform well in water purification applications.