Institute of Marine Materials Science and Engineering, Shanghai Maritime University, Shanghai, People's Republic of China.
Nanotechnology. 2010 Mar 5;21(9):095606. doi: 10.1088/0957-4484/21/9/095606. Epub 2010 Feb 8.
Mn-doped ZnO nanonails composed of hexagonal caps and shafts with large doping concentrations from 11.7 to 35.1 at.% were synthesized via a simple and straightforward non-aqueous solution-based route. The chemical composition, morphology and structure of the obtained nanocrystals were characterized by energy-dispersive x-ray analysis, powder x-ray diffraction and transmission electron microscopy. The results show that the nanonails possess a single-crystal wurtzite structure. Electron paramagnetic resonance results indicate that Mn(2+) ions substitute for the zinc sites in the ZnO matrix, which is also confirmed by high-resolution electron microscopy. Thermal tolerance experiments show that the Mn-doped nanonails can maintain their crystalline structure up to 700 degrees C. The influence of reaction conditions on the size and shape of the ZnO-based samples has been investigated in detail, and the possible growth mechanism of the nanonails has also been discussed.
通过一种简单直接的非水相溶液法，合成了掺杂浓度高达 11.7 至 35.1 原子%的 Mn 掺杂 ZnO 纳米钉，其由六边形帽和轴组成。通过能谱分析、粉末 X 射线衍射和透射电子显微镜对所得到的纳米晶体的化学组成、形态和结构进行了表征。结果表明，纳米钉具有单晶纤锌矿结构。电子顺磁共振结果表明，Mn(2+)离子取代 ZnO 基质中的锌位，高分辨率电子显微镜也证实了这一点。耐热实验表明，掺杂后的纳米钉在 700°C 仍能保持其晶体结构。详细研究了反应条件对基于 ZnO 的样品尺寸和形状的影响，并讨论了纳米钉的可能生长机制。
