摘要
以天然鸡蛋壳膜为模版,Zn(NO3)2乙醇溶液为溶剂,将鸡蛋壳膜在室温下(T=300 K)经过溶剂浸泡,然后叠放一定层数进行退火处理,生长出ZnO纳米晶体.利用X射线衍射仪、扫描电子显微镜和荧光光谱仪分析了ZnO纳米晶体的形态、结构和荧光特性,研究了纳米晶体的生长模式,讨论了叠膜层数对其生长模式和形态的影响.鸡蛋壳膜孔中生长的ZnO纳米晶体为六方纤锌矿结构,纳米晶体的尺寸和形态依赖叠模版的层数.叠放单层模版,模版容易发生卷曲,使其中生长的ZnO颗粒自组装成管状;叠放多层模版,模版之间的相互限制控制了ZnO的生长方向,使ZnO颗粒趋向于聚集成致密的六角形片状形态.ZnO颗粒的尺寸随膜层的增加而减小,各种形态的ZnO纳米晶体都具有强的紫外荧光.
ZnO nanocrystallites were prepared using eggshell membrane templates.The templates were immersed in Zn（NO3）2 ethanol solution at room temperature（T=300 K）,then several layers of eggshell membrane were laid on quartz and annealed at high temperature.Morphology,configuration,photoluminescence properties of the ZnO nanocrystallites were characterized by X-ray diffraction,scanning electron microscopy and photoluminescence spectroscopy.Growth mode of nanocrystallites and influence of layer number were discussed.ZnO nanocrystallites derived from eggshell membrane were wurtzite structures.The size and morphology depended on the number of layers.Single layer template tended to curl,leading to tube-shape formation of ZnO nanocrystallites.Mutual restriction of several layers controlled growth orientation of ZnO nanocrystallites,making ZnO nanoparticles tend to assemble to hexagon slice.Size of ZnO nanocrystallites decreaseds with increasing the number of layers,ZnO nanocrystallites of various shapes showed strong ultraviolet photoluminescence.
出处
《北京师范大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第6期680-684,共5页
Journal of Beijing Normal University(Natural Science)
基金
国家自然科学基金资助项目(10974017)
