Fe^(3+)/Al^(3+)-TiO_2复合光催化剂的制备及其光催化性能研究

Preparation and photocatalytic activity of Fe^(3+)/Al^(3+)-TiO_2 composite photocatalyst and its the photocatalytic activity

以钛酸四正丁酯为先驱物,采用溶胶-凝胶法制备铁铝共掺杂的TiO2(Fe3+/Al3+-TiO2)复合光催化剂,并用XRD、UV-Vis等进行表征,系统研究煅烧温度、光催化体系中的盐对Fe3+/Al3+-TiO2复合光催化剂在自然光条件下光催化降解甲基橙性能的影响。结果表明,Fe3+/Al3+-TiO2光催化降解甲基橙的性能随着煅烧温度的升高而增强,催化体系中的HCO3-和NO2-使Fe3+/Al3+-TiO2复合光催化剂的催化活性有所降低。

Fe3＋ and Al 3＋ co-doped TiO2（Fe^3＋/Al^3＋-TiO2）composite photocatalysts were prepared by the sol-gel method using Ti（OC4H9）4 as precursor and characterized by X-ray diffraction（XRD）and UV-Vis.The effect of calcination temperature and salts in photocatalytic system on the photocatalytic activity of Fe^3＋/Al^3＋-TiO2 were investigated by photocatalytic degradation of methyl orange irradiated by sunlight.The photocatalytic activity of Fe^3＋/Al^3＋-TiO2 was enhanced with increasing temperature.HCO3-and NO2-decreased its photocatalytic activity.