A green route for microwave synthesis of sodium tungsten bronzes NaxWO3 (0
A green route for microwave synthesis of sodium tungsten bronzes NaxWO3 (0
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DOI：
10.1016/j.jssc.2004.10.017
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发表时间：
2005
影响因子：
3.3
通讯作者：
Juanhong Guo;C. Dong;Lihong Yang;G. Fu
中科院分区：
文献类型：
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作者：
Juanhong Guo;C. Dong;Lihong Yang;G. Fu
以Na_2WO_4、WO_3和钨粉为原料，采用微波合成钠钨青铜Na_xWO_3（0<x<1）的绿色路线。以CuO粉末为加热介质，在氩气保护下进行微波合成。使用钨粉作为还原剂，代替以前用于微波合成氧化物青铜的碱金属碘化物。采用X射线粉末衍射、X射线能谱分析和扫描电子显微镜对所制备的样品进行了表征，其相组成、晶体结构和形貌与文献报道一致。该合成方法简单、绿色、原子经济，对其他氧化物青铜及相关化合物的制备具有广阔的应用前景。
A green route has been developed for microwave synthesis of sodium tungsten bronzes NaxWO3(0<x<1) from Na2WO4, WO3and tungsten powder. The hybrid microwave synthesis was carried out in argon atmosphere using CuO powder as the heating medium. Tungsten powder is used as the reducing agent instead of the alkali metal iodides previously used for the microwave synthesis of oxide bronzes. The prepared samples were characterized by powder X-ray diffraction, energy-dispersive X-ray analysis and scanning electron microscopy, and their phase constitutions, crystal structures and morphologies are in consistence with that in the literature. This synthesis method is simple, green and atom economic, and promising for preparation of other oxide bronzes and related compounds.