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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.
The oriented ZnO nanorods were prepared by the modified sol-gel method and the chemical solution growth method and the special conditions were controlled on silver-coated glass slides. X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) , Surface area electron diffraction (SAED), energy dispersive spectroscopy (EDS) and Fourier transform infrared spectroscopy (FTIR) were used to analyze the surface morphology, structure and composition of nanorods.XRD and SEM results show that the ZnO nanorods have hexagonal fibers Zinc ore structure, good crystal quality and vertical substrate growth.The TEM and SAED results show that the shape of the ZnO nanorods is single crystal structure.The absorption peaks at 418 and 541 cm-1 in FTIR spectra correspond to the The stretching vibration absorption peaks at 1384 and 1636 cm-1 correspond to the Zn-O stretching vibration absorption peaks of ZnO crystals of hexagonal wurtzite, respectively. The growth of ZnO nanorods was explained by the theory of anion coordination tetrahedron growth.