生物模板法制备二维多孔氧化锌纳米片及其光催化性能  

Preparation of two-dimensional porous zinc oxide nanosheets by biotemplate method and its photocatalytic properties

作　　者：王美燕 赵素素 刘洋洋 武博文 杨静[1] WANG Meiyan;ZHAO Susu;LIU Yangyang;WU Bowen;YANG Jing(College of Chemical and Environmental Engineering,Shandong University ofScience and Technology,Qingdao,Shandong 266590,China)

机构地区：[1]山东科技大学化学与环境工程学院

出　　处：《山东科技大学学报（自然科学版）》2019年第4期50-57,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)

摘　　要：以月季花瓣为生物模板,采用化学液相浸渍法制备二维(2D)多孔氧化锌(ZnO)纳米片。通过TG、FTIR、XRD、SEM、EDS、UV-Vis/DRS以及N2吸附等方法对2D多孔ZnO纳米片进行了表征分析。研究结果表明:以花瓣为模板制备的样品表面存在大量介孔(孔径集中在6nm左右),并完好地复制了花瓣表面特有的形貌,其比表面积(58.39m^2/g)明显大于无模板的ZnO。禁带宽度的减小,扩大了光响应范围,提高了太阳光的利用率。在氙灯照射140min后,2D多孔ZnO纳米片对亚甲基蓝(MB)溶液的光降解率达到90.40%,高于无模板ZnO。The two-dimensional(2D)porous zinc oxide(ZnO)nanosheets were first prepared with China rose petals as biotemplates by using the chemical liquid-phase impregnation method.Then,the 2D porous ZnO nanosheets were characterized by TG,FT-IR,XRD,SEM,EDS,UV-Vis/DRS and N 2 adsorption.The results show that there are plenty of mesoporous structures on the surface of prepared sample(the pore size is concentrated around at 6 nm).The sample has successfully replicated the unique morphology of the petal surface,and its specific surface area(58.39 m^2/g)is obviously larger than that of the untemplated ZnO.The reduction of band gap expands the range of light response and improves the utilization of sunlight.After 140 minutes of xenon lamp irradiation,the photodegradation rate of 2D porous ZnO nanosheets to methylene blue(MB)solution reaches 90.40%,which is higher than that of untemplated ZnO.

关 键 词：生物模板 氧化锌 纳米片 二维 光催化 

分 类 号：X522[环境科学与工程—环境工程]