固定化Me_xO_y-TiO_2/活性炭催化剂的应用研究

Study on the Application of Stabilized MexOy-TiO_2/AC Photocatalysts

为了研究既能有效降解水中有机污染物,又能从处理过的废水中方便地回收光催化剂,利用工业偏钛酸为原料,制备了Me_xO_y-TiO_2/AC复合光催化剂(Me为Ag、Zn、La),并采用XRD、SEM等对复合光催化剂进行了表征。将Me_xO_yTiO_2/AC催化剂涂在光催化反应器壁上,以O,O-二甲基-S-(N-甲基氨基甲酰甲基)二硫代磷酸酯(dimethoate)水溶液为目标污染物,研究了复合光催化剂的光催化活性。结果表明,Me_xO_y的掺入可使TiO_2/AC复合光催化剂的光催化活性增强,其中制备的Ag_2O-TiO_2/AC复合光催化剂的光催化活性最高。

MexOy-ZiO2/AC photocatalyts were prepared by using metatitanic acid （Me is Ag, Zn or La） to effectively degrade pollutants in water and to avoid the recovery of the photocatalysts. The photocatalysts that prepared were analyzed by XRD and SEM. The MexOy-TiO2/AC catalysts were stabilized on the inner surface of photocatalytic reactor and their photocatalytic activity for the photocatalytic degradation of methyl orange and dimethoate were studied. It was found that photocatalytic activity of MexOy-TiO2/AC catalytic doped with MexOy were higher than that of TiO2/AC photocatalyts. The photocatalytic activity of AGE0- TiO2/AC mutiplex photocatalyts is the highest of all the studied samples.