Institute of Inorganic Chemistry, University of Zurich, CH-8057, Zurich, Switzerland.
Nanoscale. 2010 Nov;2(11):2412-7. doi: 10.1039/c0nr00340a. Epub 2010 Aug 16.
The hydrothermal crystallization of hierarchical Bi₂WO₆ nanostructures has been monitored with in situ energy-dispersive X-ray diffraction (EDXRD). The kinetic data analysis according to the Avrami-Erofe'ev model suggests that the formation of nanostructured Bi₂(2)WO₆ is diffusion controlled with Avrami exponents around 0.5 and that the growth mechanism is temperature independent in the interval from 150 to 180°C. Furthermore, the reaction kinetics and the crystal structure of the resulting hydrothermal products depend on the pH value of the Bi(NO₃)₃·5H₂O/K₂WO₄ hydrothermal system.
采用原位能量色散 X 射线衍射（EDXRD）监测了分级 Bi₂WO₆ 纳米结构的水热结晶过程。根据 Avrami-Erofe'ev 模型进行的动力学数据分析表明，纳米结构 Bi₂(2)WO₆ 的形成受扩散控制，Avrami 指数约为 0.5，并且在 150 至 180°C 的温度范围内，生长机制与温度无关。此外，反应动力学和水热产物的晶体结构取决于 Bi(NO₃)₃·5H₂O/K₂WO₄ 水热体系的 pH 值。
