活性炭改性TiO_2对甲胺膦农药的光催化降解的研究

Study on photocatalytic degradation of methamidophos using TiO_2/A.C catalyst

主要探讨了活性炭掺杂改性TiO2/A.C的制备及其降解有机磷农药的效率,以及影响降解效率的因素.实验结果表明,制备的TiO2/A.C催化剂对低浓度的甲胺膦农药(40.71mg/L)的光催化降解过程是符合一级反应动力学方程的.催化剂中A.C的含量,催化剂的灼烧温度,催化剂的使用量对反应的降解效率均有显著的影响.

To enhance the catalytic activity of TiO_2 ,TiO_2/A.C prepared by the method of sol-gel. It was used to degradate methamidophos (initial concentration is 40.71 mg/L) in aqueous solution, which showed that the photocatalyst had high catalytic activity and the procedure of photocatalytic degradation fitted a first-order kinetic relationship well. In addition, different conditions, such as the A.C content,calcination temperature, the quantity of TiO_2/A.C had significant effects on the degradated efficiency.