可见光诱导铁(II)基有机复合物活化分子氧降解微囊藻毒素

项目名称： 可见光诱导铁(II)基有机复合物活化分子氧降解微囊藻毒素

项目编号： No.20877048

项目类型： 面上项目

立项/批准年度： 2009

项目学科： 金属学与金属工艺

项目作者： 黄应平

作者单位： 三峡大学

项目金额： 35万元

中文摘要： 选择微囊藻毒素（Microcystins-LR, MC-LR）为研究对象，制备新型模拟活化分子氧（O2）具有过氧化物酶血红蛋白（Hemoglobin，Hb）催化特性的Fe(II)基/有机配体(含OO、NN、NO 型)复合物；采用树脂、硅胶、分子筛等为载体，探索Fe(II)基有机复合物催化剂负载技术；在可见光诱导激发条件下，通过跟踪分析MC-LR 降解产物、氧化物种的变化、深度氧化程度及催化剂使用寿命，研究催化体系活化O2 降解MC-LR 的反应机理，探讨克服传统Fenton（Fe(III), Fe(II)/H2O2）反应只能紫外光激发、仅活化H2O2、催化条件pH 范围窄（pH<3）等难题，筛选出能可见光激发、有效活化O2、负载稳定好可重复使用、可高效降解MC-LR 的绿色催化体系，建立降解MC-LR 新的绿色处理方法，提出可见光激发活化分子氧光催化降解微囊藻毒素的技术原理。

中文关键词： 微囊藻毒素；铁（II）基复合物；可见光；活化分子氧；光催化

英文摘要： Microcystins(MC-LR)has been chosen as a degradation object of this research. A new catalyst, Fe(II)/organic ligands(containing types OO, NN and NO) complexes, which has the catalytic characteristics of peroxidase hemoglobin(Hb) by simulating the process of activating molecular oxygen(O2) is to be prepared. To explore the immobilization technology of the Fe(II)/organic ligands complexes, supporters such as resin, silica, zeolite etc will be used. Under the excitation induced by visible light, the reaction mechanism of MC-LR degradation by activating molecular oxygen will be presented through tracking analysis of MC-LR’ degradation products, the change of oxide species, the degree of deep oxidation, and the service life of catalysts. To overcome the traditional Fenton regents’#65288;Fe(III), Fe(II)/H2O2）problems such as excited by ultraviolet light, H2O2-activated only, and narrow pH range (pH&lt;3), the green catalytic system of the degradation of MC-LR which can be excited by visible light, effectively activate O2, and have high stability of immobilization will be established and discussed. And the technical principle of O2-activated excited by visible light to degrade microcystins will be proposed.

英文关键词： Microcystins; Fe(II)complexes; visible