Key Laboratory of Acoustic and Photonic Materials and Devices of Ministry of Education, Wuhan University, Wuhan 430072, P. R. China.
Chem Asian J. 2010 Feb 1;5(2):315-21. doi: 10.1002/asia.200900378.
Connected zinc oxide (ZnO) nanoparticles are successfully synthesized by a simple solution-based chemical route that uses evaporation and concentration technology. The influences of processing parameters, especially the evaporation and concentration time on the size and morphology of the nanoparticles, have been investigated by transmission electron microscopy (TEM) and high-resolution TEM (HRTEM). The structure and optical properties are systematically characterized by X-ray diffraction (XRD), UV/Vis spectrophotometery, and fluorescence spectroscopy (FL). It is found that the average diameter and morphology are strongly affected by the evaporation and concentration time. Additionally, the formation mechanism of the nanoparticles is also discussed. The studies revealed that the evaporation and concentration are important aggregation or nucleation processes for ZnO growth, which leads to the macro-differences in morphology. These results provide some insight into the growth mechanism of ZnO nanostructures. The synthetic strategy developed in this study may also be extended to the preparation of other nanomaterials and promising applications in various fields of nanotechnology.
通过使用蒸发和浓缩技术的简单溶液化学路线，成功合成了连接的氧化锌 (ZnO) 纳米粒子。通过透射电子显微镜 (TEM) 和高分辨率 TEM (HRTEM) 研究了处理参数，特别是蒸发和浓缩时间对纳米粒子尺寸和形态的影响。通过 X 射线衍射 (XRD)、紫外/可见分光光度法和荧光光谱法 (FL) 系统地表征了结构和光学性质。结果发现，平均直径和形态强烈受到蒸发和浓缩时间的影响。此外，还讨论了纳米粒子的形成机制。研究表明，蒸发和浓缩是 ZnO 生长的重要聚集或成核过程，导致形貌的宏观差异。这些结果为 ZnO 纳米结构的生长机制提供了一些见解。本研究中开发的合成策略也可扩展到其他纳米材料的制备，并有望在纳米技术的各个领域得到应用。
