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利用循环还原-氧化工艺制备亚微米级的WO_3粉末,采用扫描电镜观察WO_3粉末形貌,用激光粒度分析仪分析其粒度分布。结果表明,通过控制反应温度和保温时间进行多次还原-氧化反应,能够获得亚微米WO_3粉末。
The submicron WO_3 powders were prepared by cyclic reduction-oxidation process. The morphology of WO_3 powder was observed by scanning electron microscopy. The particle size distribution was analyzed by laser particle size analyzer. The results show that by controlling the reaction temperature and holding time for multiple reduction - oxidation reaction, to obtain sub-micron WO_3 powder.