特定条件下的定向ZnO 纳米棒的制备及表征Synthesis and.PDF

2011 年第69 卷 化 学 学 报 Vol. 69, 2011 第20 期, 2434～2438 ACTA CHIMICA SINICA No. 20, 2434～2438 ·研究论文· 特定条件下的定向 ZnO 纳米棒的制备及表征 郑建华 张晓凯* 卢慧粉 ( 山东师范大学物理与电子科学学院 济南 250014) 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. 关键词 氧化锌; 纳米棒; 阵列; 定向; 特定条件 Synthesis and Characterization of Well-aligned ZnO Nanorod Arrays under Specific Conditions Zheng, Jianhua Zhang, Xiaokai* Lu, Huifen (College of Physics and Electronics, Shandong Normal University, Jinan 250014) Abstract 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).