Na掺杂ZnO薄膜光诱导亲水性的转化(英文)  

PHOTO-INDUCED HYDROPHILICITY CONVERSION OF Na-DOPED ZnO THIN FILMS

作　　者：吕建国[1,2] 黄凯[3] 陈学梅[2] 朱剑博[2] 孟凡明[1,4] 宋学萍[1] 孙兆奇[1] 

机构地区：[1]安徽大学物理与材料科学学院,合肥230039 [2]合肥师范学院物理与电子工程系,合肥230601 [3]安徽建筑工业学院数理系,合肥230601 [4]大连理工大学三束材料改性国家重点实验室,辽宁大连116024

出　　处：《硅酸盐学报》2010年第10期2010-2013,2020,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(No.50872001);教育部博士点专项基金(20060357003);安徽高校省级自然科学研究重点(KJ2010A-284)资助项目

摘　　要：采用溶胶-凝胶技术在Si(111)和石英基片上制备8%(摩尔分数)Na掺杂ZnO薄膜。用X射线衍射仪、原子力显微镜、扫描电镜和接触角测试仪测试薄膜的微结构、表面形貌和表面接触角。结果表明:所有薄膜均具有较好的c轴择优取向,表面由近六边形棒状颗粒构成。随着退火温度升高,薄膜表面接触角由95°增大到106°。通过对薄膜交替进行紫外光照和黑暗放置(或热处理),可以实现其表面疏水与超亲水性之间的可逆转化,光诱导可逆转化效率随退火温度升高而增大。Na-doped 8%（mole fraction） ZnO thin films were deposited on Si（111） or quartz substrate by sol-gel method.The microstructure,surface topography and water contact angle of the thin films have been measured by X-ray diffractometer（XRD）,atomic force microscopy,scanning electron microscopy（SEM）,and water contact angle apparatus.XRD results show that the thin films have a higher preferential c-axis orientation.SEM results reveal that the films consist of nearly hexagonal rod-like grains.With the increase of annealing temperature,the contact angle of the un-irradiated thin films increases from 95°to 106°.The hydrophobic thin films could be reversibly switched to super-hydrophilic by alternation of ultraviolet irradiation and dark storage（or thermal treatment）.The photo-induced efficiency of the thin films increases with the increase of annealing temperature.

关 键 词：氧化锌薄膜 溶胶-凝胶 表面与界面 亲水性 

分 类 号：O472.1[理学—半导体物理] O484[理学—物理]