摘要：分别以硫酸钛和钛酸丁酯为原料,采用水热法制备介孔TiO₂,对制得的样品进行X射线衍射、N₂吸附-脱附、表面羟基面密度测定等表征,并以刚果红为目标污染物研究样品的吸附性能。结果表明:所得样品均为介孔材料;由硫酸钛和钛酸丁酯制备TiO₂的比表面积分别为153.2、314.3 m²/g,对刚果红的吸附率分别达到90%和70%以上,吸附速率符合拟二级动力学方程。

关键词：介孔TiO₂；吸附；刚果红

Abstract: Taking titanium sulfate and tetrabutyl titanate as raw materials， mesoporous TiO₂ was prepared by the method of hydrothermal. The samples were characterized by XRD， N₂ adsorption-desorption， and surface hydroxyl groups measurements. Congo red was selected as a target contaminant to study adsorption ability of the samples. The results show that the samples prepared from titanium sulfate and tetrabutyl titanate have mesoporous structures with specific surface areas of 153.2 and 314.3 m²/g， respectively. The adsorption kinetics of congo red fit well with pseudo second order kinetics equation. The adsorption ratios of congo red by both samples are respectively maintained above 90% and 70%. 

Keywords： mesoporous TiO₂； adsorption； congo red