摘要
采用改进的溶胶凝胶和化学溶液生长两步法,并控制特定条件在镀银载玻片上制备出定向ZnO纳米棒.利用X射线衍射(XRD)、扫描电镜(SEM)、透射电镜(TEM)、选区电子衍射(SAED)、能谱(EDS)及傅里叶红外吸收光谱(FTIR)对纳米棒的表面形貌、结构、组分进行分析.XRD和SEM结果表明该ZnO纳米棒具有六角纤锌矿结构,结晶质量良好,垂直衬底生长.TEM和SAED结果表明该ZnO纳米棒形状规则,为单晶结构.FTIR谱中的位于418和541 cm-1的吸收峰对应于棒状ZnO结构的伸缩振动吸收峰,1384和1636 cm-1对应于六方纤锌矿ZnO晶体的Zn—O伸缩振动吸收峰.利用负离子配位四面体生长理论初步解释ZnO纳米棒的生长过程.
Well-aligned ZnO nanorod arrays were synthesized successfully on Ag-deposited glass sub-strates using a two-step process and controlling specific conditions.The process involved modified sol-gel and chemical solution growth methods.The surface morphologies and structure of as-prepared ZnO nano-rods were characterized by X-ray diffraction（XRD）,scanning electron microscopy（SEM）,transmission electron microscope（TEM）,the selected-area electron diffraction（SAED）,energy dispersive X-ray spec-trum（EDS）,fourier transform infrared spectra（FTIR）.The XRD and SEM results showed that the ZnO nanorod arrays have hexagonal wurtzite structure and have been completely oxidized and translated into crystalline ZnO in the hexagonal wurtzite phase.The TEM and SAED investigation indicated that the ZnO nanorods have regular morphology and are single crystalline ZnO nanorods with hexagonal wurtzite struc-ture.The main absorption bands appeared at 1384 and 1636 cm-1 is corresponding to the stretching vibra-tion peak of Zn—O,and the main bands at 418 and 541 cm-1 corresponds to rod structure of ZnO.Further-more,the growth mechanism of ZnO nanorods were illustrated.
出处
《化学学报》
SCIE
CAS
CSCD
北大核心
2011年第20期2434-2438,共5页
Acta Chimica Sinica
作者简介
E—mail：minliyil@163．com；Tel．：0531-86182323．
