ZnO/Ag复合膜的制备及其润湿性转换研究  

Fabrication and Wettability Conversion of ZnO/Ag Composite Films

作　　者：胡亚微[1] 贺惠蓉[1] 马养民[1] 杨秀芳[1] 

机构地区：[1]陕西科技大学化学与化工学院,西安710021

出　　处：《高等学校化学学报》2013年第2期295-298,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:21201115);陕西省自然科学基金(批准号:2011JQ2009);陕西省教育厅项目(批准号:11JK0561);高等学校博士学科点专项科研基金新教师类资助课题(批准号:20116125120004)资助

摘　　要：利用溶胶-凝胶技术制备了ZnO/Ag复合膜.采用X射线粉末衍射和扫描电子显微镜对其物相组成、晶型结构以及表面形貌进行了表征,采用接触角测试仪对其润湿性进行了表征,并研究了紫外光照射下Ag的掺杂量对ZnO薄膜润湿性的影响.结果表明,当Ag掺杂量(摩尔分数)为5%时,所得膜的润湿性转换速率最快,紫外光照3 h后,其润湿性由超疏水性转换为亲水性,黑暗中放置5 d后,亲水性再次转换为超疏水,实现了润湿性的可逆转换.ZnO/Ag composite films were fabricated through sol-gel method.The phases,crystallographic structures and surface topographies of the ZnO/Ag films were characterized by an X-ray diffractometer（XRD） and a scanning electron microscope（SEM）.The wettabilities of ZnO/Ag films were characterized by a drop shape analyzer.The effect of Ag content on wettability of ZnO film under UV light was investigated.The result indicated that the molar fraction of Ag loaded on ZnO film had a significant effect on the wettability conversion.A rapid wettability conversion was occurred on ZnO/Ag composite film with Ag content of 5%（molar fraction）,which converted hydrophilic after 3 h UV irradiation and returned to superhydrophobic state after stored in a dark place for 5 d.The mechanism for this wettability reversible conversion was discussed.

关 键 词：ZnO膜 溶胶-凝胶法 润湿性转换 

分 类 号：O611.62[理学—无机化学]