花状Ag/ZnO复合物的制备及光催化性能  

Preparation and Photocatalytic Activity of the Flower-like ZnO/Ag Composite

作　　者：乔龙娥[1] 孙仕勇[2] 吴旭虎[1] 李平[1] 牛和林[1] 

机构地区：[1]安徽大学化学化工学院,安徽合肥230061 [2]西南科技大学固体废物处理与资源化教育部重点实验室,四川绵阳621010

出　　处：《西南科技大学学报》2013年第1期8-12,共5页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金项目(41102213);训练计划项目(cxcy2012037和KYXL20110028)

摘　　要：采用水热合成法制备ZnO微米花状粉体,利用聚乙烯吡咯烷酮(PVP)作为还原剂和分散剂,在ZnO微米花状粉体表面还原不同浓度的银氨溶液,获得花状的Ag/ZnO复合物。通过X射线衍射(XRD)、扫描电子显微镜(SEM)以及透射电镜(TEM)对它们的物性结构和晶粒形貌进行了表征,显示Ag纳米晶分散地附着在ZnO的表面。对亚甲基蓝溶液进行紫外光催化降解实验,结果表明该复合物具有很高的光催化活性。Using the polyvinylpyrrolidone as a reducing agent and dispersant, flower-like ZnO/Ag composite is prepared based on surface of flower-like ZnO prepared by hydrothermal method in different concentrations of silver ammonia solution. The phase structures and surface physicochemical properties were well-charac- terized via X-ray diffraction （XRD） patterns, nitrogen adsorption determination, scanning electron micro- scope with energy dispersive spectrometer （SEM） and transmission electron microcopy（TEM）. The compos- ite were tested by the UV-light photodegradation of methylene blue （MB）. The results indicate that Ag can load effectively on ZnO surface, and the Ag/ZnO composite was the typical hexagonal wurtzite structure, the composites exhibited higher photocatavtic activities under the UV-light irradition.

关 键 词：AG ZNO 水热法 光催化 

分 类 号：O614[理学—无机化学]