Hydrothermal synthesis of sodium niobate with controllable shape and structure
Hydrothermal synthesis of sodium niobate with controllable shape and structure
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DOI：
10.1039/c1ce06100c
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发表时间：
2012
期刊：
影响因子：
3.1
通讯作者：
K. Zhu;Yang Cao;Xiaohui Wang;Lin Bai;J. Qiu;H. Ji
中科院分区：
文献类型：
--
作者：
K. Zhu;Yang Cao;Xiaohui Wang;Lin Bai;J. Qiu;H. Ji
我们描述了在高温水热条件下通过混合反应物合成六方NaNbO3。采用X射线衍射、扫描电子显微镜、透射电子显微镜、选区电子衍射、高分辨透射电子显微镜和拉曼光谱等技术研究了晶体NaNbO3的形貌和结构演化。制备了不规则Na8Nb6O19·nH2O棒、微孔单斜Na2Nb2O6·nH2O纤维、自组装蒲公英状Na2Nb2O6·nH2O结构和八面体状六方NaNbO3。目前的合成策略使我们能够通过控制反应动力学来调整的形态和结构的酯产品。
We describe the synthesis of hexagonal NaNbO3 by mixing reactants at high temperature under hydrothermal conditions. The morphological and structural evolution of crystalline NaNbO3 was studied in detail using X-ray diffraction, scanning electron microscopy, transmission electron microscopy, selected area electron diffraction, high-resolution transmission electron microscopy, and Raman techniques. A variety of products in the form of irregular Na8Nb6O19·nH2O bars, microporous monoclinic Na2Nb2O6·nH2O fibers, self-assembled dandelion-like Na2Nb2O6·nH2O structures, and octahedral-shaped hexagonal NaNbO3 have been prepared. The present synthetic strategy enables us to tune the morphologies and structures of the niobate products by controlling the reaction kinetics.