Nucleation and Growth of ZnO in Organic Solvents - an in Situ Study
Nucleation and Growth of ZnO in Organic Solvents - an in Situ Study
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DOI：
10.1021/ja804071h
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发表时间：
2008-12-10
影响因子：
15
通讯作者：
Polarz, S.
中科院分区：
文献类型：
--
作者：
Lizandara-Pueyo, C.;van den Berg, M. W. E.;Polarz, S.
氧化锌是一种具有多种性能和用途的金属氧化物材料。因此，定向制备氧化锌已成为一个重要的课题。许多制备技术涉及从前驱体溶液中自下而上的方法。在目前的贡献中，描述了一种特殊的前驱体体系，可以精细控制ZnO在各种有机溶剂中的成核和生长的动力学参数。各种各样的分析技术可以应用于原位方式来探测ZnO在任何时间和所有长度尺度上的形成。分析技术包括紫外/可见、拉曼、荧光、x射线吸收、H-1核磁共振光谱、动态光散射和透射电镜。可以确定三种不同的成核和生长机制，它们具有不同的特征。此外，还研究了不同工艺参数对ZnO粒度的影响。
ZnO is a metal oxide material which possesses versatile properties and applications. Therefore, the target-oriented preparation of ZnO has become a major issue. Many preparation techniques involve bottom-up methods from precursor solutions. In the current contribution, a special precursor system is described that enables a fine-control of kinetic parameters for the nucleation and growth of ZnO in various organic solvents. A large variety of analytical techniques could be applied in an in situ fashion to probe for the ZnO formation at all times and all length scales. Among the analytical techniques are UV/vis, Raman, Fluorescence, X-ray absorption, H-1 NMR-spectroscopy, dynamic light-scattering, and TEM. Three different regimes for nucleation and growth with different characteristics could be identified. Furthermore, the effect of different parameters on the resulting ZnO particle size was investigated.