Solvothermal synthesis and morphology control of NaNbO3 nanocubes using a reaction medium of water and/or methanol
Solvothermal synthesis and morphology control of NaNbO3 nanocubes using a reaction medium of water and/or methanol
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DOI：
10.1080/21870764.2019.1683955
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发表时间：
2019-11-07
影响因子：
2.3
通讯作者：
Kakihana, Masato
中科院分区：
文献类型：
--
作者：
Nakashima, Kouichi;Toshima, Yasuharu;Kakihana, Masato
在水或甲醇的反应介质中，在230 ℃下通过溶剂热合成制备NaNbO3颗粒。通过改变合成条件，如起始材料和反应介质，实现颗粒的形态控制。通过涉及在400 ° C和800 ° C下热处理Nb前体的方法制备起始材料。起始材料的晶体结构取决于热处理温度，在800 ℃下获得优选的正交Nb2O5。当使用水作为反应介质时获得大颗粒，而使用甲醇获得细颗粒。以正交Nb2O5为原料，甲醇为反应介质，在适当的条件下合成了NaNbO3纳米立方体。
NaNbO3 particles were prepared by solvothermal synthesis at 230 degrees C in a reaction medium of either water or methanol. Morphological control of the particles was achieved by varying the synthesis conditions, such as the starting material and the reaction medium. The starting material was prepared by a process involving heat treatment of an Nb precursor at 400 degrees C and 800 degrees C. The crystal structure of the starting material depended on the heat treatment temperature, with the preferred orthorhombic Nb2O5 obtained at 800 degrees C. Large particles were obtained when water was used as the reaction medium, whereas fine particles were obtained using methanol. Under appropriate conditions, NaNbO3 nanocubes can be synthesized using orthorhombic Nb2O5 as the starting material and methanol as the reaction medium.