载银TiO_2光催化降解2,4-二氯苯酚水溶液的研究

Solar Photodegradation of 2,4-Dichlorophenol Using Ag-Loaded Titanium Dioxide as Catalyst

以新型载银ＴｉＯ２为催化剂，太阳光为光源，对２，４－二氯苯酚水溶液进行了光降解。结果表明，载银ＴｉＯ２催化剂的光解效率是单纯ＴｉＯ２的１９倍；经回归分析，由Ｌａｎｇｍｉｕｒ－ＨｉｎｓｈｅｉＷｏｏｄ方程计算出的反应速率Ｒ值与实验值的最大偏差不超过６５％。证明该光解反应是非均相催化动力学反应。

Solar photodegradation of 2,4-dichlorophenol in aqueous solution was studied using Ag-loaded titanium dioxide as catalyst.It has been shown that the catalytic activity of TiO 2 can be increased by loading silver.The kinetic property of the action fits Langmiur-Hinshel wood equation.The influence of parameters such as initial concentration and pH value of 2,4-dichlorophenol solution and the amount of catalyst and silver loaded was studied.