纳米ZnO/共轭聚合物复合材料光催化降解苯胺的研究  

PHOTOCATALYTIC DEGRADATION OF ANILINE WITH NANOMETER ZnO/CONJUGATED POLYMER COMPOSITE PHOTOCATALYST

作　　者：高海霞[1] 施利毅[2] 成荣明[1] 陈奕卫[1] 潘家永[1] 韩婧[1] 

机构地区：[1]华东师范大学纳米功能材料与器件研究中心,纳光电集成与先进装备教育部工程研究中心,上海200062 [2]上海大学理学院,上海惠纳高新化工材料有限公司,上海200444

出　　处：《水处理技术》2007年第9期39-42,共4页Technology of Water Treatment

基　　金：上海纳米科技专项基金资助项目(0252nm011;0552nm042)

摘　　要：采用共混然后适当温度煅烧的方法,以纳米ZnO和PVC为原料合成了纳米氧化锌/共轭聚合物复合光催化剂,并采用透射电子显微镜(TEM)、紫外-可见(UV-Vis)吸收光谱和电子自旋共振光谱(ESR)对材料的晶粒尺寸、光吸收性能及表面氧空位含量进行了表征。以苯胺为模型化合物,对复合材料光催化剂的光催化性能进行了评价,考察了催化剂用量、苯胺初始浓度及溶液pH值等条件对光催化性能的影响。实验结果表明,复合材料具有很高的光催化性能。50mL浓度为20mg/L的苯胺水溶液光催化18min,去除率可达91%。且酸性条件有利于苯胺的降解。Using nanometer ZnO and PVC as the raw materials, nanometer ZnO/conjugated composite photocatalyst was prepared by mixing and calcinating method at appropriate temperature. Transmission electron microscopy （TEM）,UV-Vis absorption spectroscopy and electron spinning resonance （ESR） measurement techniques were employed to characterize optical absorption, crystal and particle size and the content of surface oxygen vacancies of the sample. Application of nanometer ZnO/conjugated polymer composite as photocatalyst was practiced by using aniline as a model compound. The effect of catalyst amount, initial aniline concentration and initial pH values of solution on the photodegradation rate were investigated. The results indicated that the complex had highly photocatalytic activities. When 50mL 20mg/L aniline solution was photo-catalyzed for 18min, it was almost photodegraded by 91%. Besides, acidic condition was favorable to the degradation of aniline solution.

关 键 词：氧化锌 聚氯乙烯 复合材料 苯胺 光催化 

分 类 号：TQ031.7[化学工程]