可磁分离Cu_2O光催化剂的制备与光催化活性  

Preparation and Photocatalytic Activity of Magnetically Separable Cu_2O Photocatalyst

作　　者：陈伟[1] 李燕[1] 徐海燕[1] 

机构地区：[1]安徽建筑工业学院先进建筑材料安徽省重点实验室,安徽合肥230022

出　　处：《陶瓷学报》2012年第3期343-346,共4页Journal of Ceramics

基　　金：国家自然科学基金(编号:20901001)资助项目;安徽建筑工业学院大学生科技创新项目

摘　　要：采用共沉淀法制备了镍锌铁氧体,水合肼还原法制备了镍锌铁氧体负载Cu2O可磁分离光催化剂。采用X射线粉末衍射(XRD),高分辨透射电子显微镜(HRTEM)对所制得的样品进行了表征;并以甲基橙为降解对象,考察了镍锌铁氧体负载Cu2O可磁分离光催化剂的光催化性能。结果表明:Cu2O/镍锌铁氧体复合粉体对甲基橙溶液有较高的降解能力,重复使用4次光催化效率仍保持在81%,而且Cu2O/镍锌铁氧体光催化剂可通过外加磁场进行分离,具有较好的应用前景。Nickel-zinc ferrite powders were prepared by coprecipitation method, and magnetically separable Cu2O/nickel-zinc ferdte photocatalyst was prepared by hydrazine hydrate reduction method. The as-prepared sample was characterized by X-ray diffraction （XRD） and high resolution transmission electron microscopy （TEM）. The photocatalytic activities of magnetically separable Cu2O/nickel-zinc ferrite photocatalyst were investigated by the degradation of methyl orange. The results show that the composite Cu2O-coated nickel-zinc ferrite powders had higher photocatalytic activity for methyl orange solution. In addition, its photocatalytic efficiency could be maintained at 81% when it was repeatedly used for 4 times. The magnetically separable Cu2O/nickel-zinc ferrite photocatalyst could be separated from the system by applying an external magnetic field to it. It＇s considered that the Cu2O-coated nickel-zinc ferrite is a promising photocatalyst.

关 键 词：CU2O 镍锌铁氧体 负载 光催化 磁性分离 

分 类 号：TQ174.75[化学工程—陶瓷工业]