溶胶-凝胶制备ZnO粉体及其光催化性能研究  

On Preparation by Sol-Gel Method and Photocatalytic Activity of ZnO Powder

作　　者：王政龙[1] 史强[1] 李淑红[1] 张栋[1] 王长征[2] 

机构地区：[1]聊城大学物理科学与信息工程学院,山东聊城252059 [2]聊城大学材料科学与工程学院,山东聊城252059

出　　处：《广西师范学院学报（自然科学版）》2013年第1期36-40,共5页Journal of Guangxi Teachers Education University(Natural Science Edition)

基　　金：山东省自然基金(ZR2012EM007;ZR2011EL002);聊城市科技发展计划(2012GX08)

摘　　要：以醋酸锌为原料,采用溶胶-凝胶法制备ZnO粉体。利用X射线衍射谱、扫描电子显微镜、荧光光谱仪和紫外-可见光分光光度计分别研究不同煅烧温度下制备ZnO粉体的结构、形貌、缺陷和光催化性能。结果表明:样品在873K的煅烧温度下时具有完整的棒状形态,存在较多的缺陷,较好的结晶性且光催化活性最高,催化降解35min后,甲基橙降解率可达到98.95%。The ZnO powders were synthesized by Sol-Gel method using Zinc Acetate as source precursor. And then the effect of calcination temperature on the structure, morphology and photocat- alytic performance of all the powders were characterized by X-ray diffraction （XRD）, scanning elec- tron microscopy （SEM）, Photoluminescence spectrometer （PL） and UV-Vis spectrometer, respec- tively. The results showed that when calcination temperature is 873 K the samples display rod-like shape and have a great deal of defects and the highest catalytic activity. After 35 minutes irradiation, the degradation rate to methyl orange can reach 98.95 %.

关 键 词：ZnO粉体 光催化 甲基橙 溶胶-凝胶法 

分 类 号：TF123[冶金工程—粉末冶金]