Yu Shi-Yong, Zhang Hong-Jie, Peng Ze-Ping, Sun Li-Ning, Shi Wei-Dong
Key Laboratory of Rare Earth Chemistry and Physics, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China.
Inorg Chem. 2007 Sep 17;46(19):8019-23. doi: 10.1021/ic7008978. Epub 2007 Aug 24.
Well-faceted hexagonal ZnO microprisms with regular interior space have been successfully prepared by a template-free hydrothermal synthetic route. The morphologies of the products depend on the experimental conditions such as the solvent, the concentration of ammonia aqueous solution, and the reaction temperature. Through manipulation of the aging time, the as-prepared ZnO can be controlled as a monodispersed hexagonal twinning solid or as hollow microprisms. Moreover, the evolution process of the hollow ZnO nanoarchitecture after reaction for 2, 6, 12, and 24 h has been investigated by field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM). A possible growth mechanism has also been proposed and discussed. Furthermore, the photoluminescence (PL) measurement exhibits the unique emitting characteristic of hollow ZnO nanostructures.
通过无模板水热合成路线成功制备了具有规则内部空间的多面六边形ZnO微棱镜。产物的形貌取决于实验条件，如溶剂、氨水溶液浓度和反应温度。通过控制老化时间，所制备的ZnO可以被控制为单分散的六边形孪晶固体或空心微棱镜。此外，通过场发射扫描电子显微镜（FE-SEM）和透射电子显微镜（TEM）研究了反应2、6、12和24小时后空心ZnO纳米结构的演变过程。还提出并讨论了一种可能的生长机制。此外，光致发光（PL）测量显示了空心ZnO纳米结构独特的发射特性。
