摘要
采用热蒸发锌 (Zn)粉的方法 ,制备出高产量的由半导体氧化锌纳米线组成的蒲公英花状和四角锥状纳米结构。利用SEM、TEM和X射线衍射对产物的形貌及结构进行了分析。结果表明 ,所生成的是具有六方结构的单晶ZnO纳米线。纳米线长约 5 1 0 μm ,根部直径较粗 ,约 1 1 0 1 2 0nm ;梢部较细 ,约 2 5 30nm ,其生长机制为气 -固 (VS)机制。
Dandelion flower-shaped and tetrapod-shaped structures composed from semiconductor single crystalline zinc oxide (ZnO) nanowires have been synthesized in bulk quantities by thermally evaporating Zn powders. XRD proves that the nanowires have the hexagonal structure of ZnO. SEM and TEM investigations showed that the length of ZnO nanowires is in the range of 8-10μm,and their diameter is about 110-120nm at the bottom, but about 25-30nm at the tip. The growth of ZnO nanowires is controlled by a VS mechanism.
出处
《材料科学与工程学报》
CAS
CSCD
北大核心
2005年第1期109-111,共3页
Journal of Materials Science and Engineering
基金
教育部优秀青年教师奖励计划
陕西省教育厅自然科学专项
陕西省纳米材料重点实验室纳米专项资助项目 .
关键词
热蒸发法
氧化锌纳米线
气-固机制
thermally evaporating method
ZnO nanowires
VS mechanism
