Microwave-assisted solvothermal synthesis and growth mechanism of WO3•(H2O)0.33 hierarchical microstructures
Microwave-assisted solvothermal synthesis and growth mechanism of WO3•(H2O)0.33 hierarchical microstructures
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DOI：
10.1039/b915363b
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发表时间：
2010-01-01
期刊：
影响因子：
3.1
通讯作者：
Xue, Zi-Ling
中科院分区：
文献类型：
--
作者：
Ma, Ying-Li;Zhang, Lei;Xue, Zi-Ling
以Na2WO4中心点2H（2）O和盐酸为前驱体，乙二胺四乙酸二钠（Na（2）H（2）EDTA）为结构导向剂，采用微波辅助溶剂热法成功制备出了WO3中心点（H2O）（0.33）层次结构，如微坚果、微花和微圆盘。采用X射线粉末衍射（XRD）、能谱分析（EDS）、扫描电镜（SEM）和透射电镜（TEM）对产物进行了表征。研究了反应时间、反应温度、水与甘油的体积比、Na（2）H（2）EDTA和盐酸的用量对产物形貌的影响。提出了一种可能的生长机制。
WO3 center dot(H2O)(0.33) hierarchical microstructures such as micro-nutlets, micro-flowers, and micro-discs have been successfully prepared via a facile microwave-assisted solvothermal route employing Na2WO4 center dot 2H(2)O and hydrochloric acid as precursors and disodium ethylenediaminetetraacetic (Na(2)H(2)EDTA) as a structure-directing agent. The products have been characterized by X-ray powder diffraction (XRD), energy dispersive X-ray analysis (EDS) scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The influences of reaction time, temperature, the volume ratio of water and glycerol, and the amount of Na(2)H(2)EDTA and hydrochloric acid on the morphologies have been studied in detail. A possible growth mechanism was proposed.