摘要
以十二烷基硫酸钠/正戊醇/水三元体系制备层状溶致液晶,并以此为模板,结合均匀沉淀法制备了颗粒尺寸在20～50 nm的ZnO球形颗粒,并研究了其光催化活性。结果表明:以溶致液晶为模板制备的纳米ZnO颗粒,结构稳定且无杂质出现,与无模板ZnO相比具有更大的比表面积和更窄的禁带宽度;紫外光照射150 min,对亚甲基蓝溶液的光催化降解率达到89%,说明以溶致液晶为模板制备的纳米ZnO颗粒具有更好的光催化性能。
The lamellar lyotropic liquid crystal (LLC), prepared by anionic surfactant sodium dodecyl sulfate(SDS)/1-pentanol/water system, was used as the template for the preparation of ZnO nanoparticles of 20~50 nm with a homogeneous precipitation method and its photocatalytic activity was studied. The results show that the obtained ZnO nanoparticles exhibit the advantages of high purity and structural stability and display higher specific surface area and narrower band gap than the ZnO species prepared without template. When used as the catalyst for the photodegradation of methylene blue, the LLC-template ZnO materials have the highest degradation of 89% after 150 minutes’ irradition under the xenon lamp, illustrating the good photocatalytic performance of the LLC-template ZnO nanoparticles as a promising photocatalyst candidate for the degradation of methylene blue.
作者
杨静
赵素素
王美燕
刘洋洋
武博文
YANG Jing;ZHAO Susu;WANG Meiyan;LIU Yangyang;WU Bowen(College of Chemical and Environmental Engineering, Shandong University of Scienceand Technology, Qingdao, Shandong 266590, China)
出处
《山东科技大学学报（自然科学版）》
CAS
北大核心
2019年第2期49-56,共8页
Journal of Shandong University of Science and Technology(Natural Science)
基金
国家自然科学基金-煤炭联合基金重点支持项目(U1261205)
青岛经济技术开发区重点科技发展计划项目(2013-1-66)
青岛市建设事业科技发展项目(JK2013-9)
关键词
溶致液晶
层状相
纳米ZNO
光催化
亚甲基蓝
lyotropic liquid crystal
lamellar phase
ZnO nanoparticles
photocatalytic activity
methylene blue
作者简介
杨静(1969—),女,山东泰安人,教授,博士,主要从事抑尘剂及降尘剂的制备及应用研究.E-mail:kdyangjing@163.com.
