SO_4^(2-)/TiO_2光催化降解邻硝基苯酚(英文)

Photocatalytic Degradation ofo-Nitrophenol by SO_4^(2-)/TiO_2

采用硫酸溶液浸渍处理TiO2制得SO42-/TiO2光催化剂。考察了光催化剂对邻硝基苯酚溶液的光催化行为。发现SO42-/TiO2的光催化活性高于TiO2,浸渍液中H2SO4的浓度和催化剂的焙烧温度对SO42-/TiO2的催化活性有一定的影响,H2SO4溶液的最佳浓度为0.5 mol.L-1,最佳焙烧温度为500℃。催化降解过程符合一级反应动力学规律。

SO4^2-/TiO2 photocatalysts were prepared in the presence of H2 SO4. The photocatalytic action of o-nitrophenol were observed by photocatalysts. It was found that the photocatalytic activity of SO4^2-/TiO2 was higher than that of TiO2. Concentration of H2SO4 and calcination temperature had effect on the catalytic activity of SO4^2-/TiO2 and the best conditions were 0.5 mol·L^-1 and 500℃ respectively, o-Nitrophenol degradation approximately followed the first-order reaction kinetics regularity.