太阳光下降解久效磷的催化剂研究

A study on the catalyst of photocatalytically degrading monocrotophos under sunlight

以ＴｉＯ_２为基体，用掺杂某些金属或离子的方法，提高ＴｉＯ_２；在太阳光下的催化活性。从多种掺杂催化剂中，筛选出太阳光下降解人效磷的有效催化剂 Ｆｅ~３＋／ＴｉＯ_２，经 ３ ｈ阳光照射，久效磷的矿化率达 ９０％。 Ｆｅ^（３＋）在待降解液中的最适宜浓度为 ２．０×１０^（－４）ｍｏｌ／Ｌ。

Certain kinds of metals or ions were used to enhance the catalytic activity of TiO_2 under sunlight. From a variety of doping catalysts, Fe^3+ /TiO_2 was selected because it could degrade effectively moncrotophos under sunlight. After three hour irradiation with sunlight, the degradation rate of monocrotophos could reach 90 %. In addition. the most suitable concentration of Fe^3+ was determined to be 2.0×10^-4 mol/L. in the origin fluid.