在常温下,以微乳液为反应器,硼氢化钠为还原剂,采用半连续的方法制备纳米铜粉.研究了分散剂、水相含量(水油比)、铜离子初始浓度对粒径与形貌的影响,对产品进行扫描电镜(SEM)、透射电镜(TEM)、X射线衍射(XRD)表征.结果显示纳米铜粉为球形,纯度高,平均粒径约为5～10 nm.此方法将微乳液制备纳米铜粉的产出效率提高3倍,并能重复利用有机溶剂与表面活性剂,节约成本.
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