采用行星球磨机在pH=2的稀盐酸溶液中对Cu粉进行球磨, 球磨机筒体和磨球材质均为纯Cu, 球料比为20:1, 球磨机转速为300r/min, 通过X射线衍射(XRD)、扫描电子显微镜(SEM)、透射电子显微镜(TEM)等对球磨产物进行了表征. XRD结果表明, 球磨3h后, 所加入的纯Cu粉末基本转化为Cu2O粉末. 球磨70h后得到纯的Cu2O粉末, 粉末粒度为50~100nm. 并对Cu2O纳米粉末的生成机制及球磨工艺参数对Cu2O形成的影响进行了讨论.
The copper powder was ball-milled in HCl solution (pH=2) by high-energy ball milling. Both milling balls and container were made of pure copper. The weight ratio of Cu balls with in diameter of 15mm to the weight of powder was 20:1, and all milling was carried out at a speed of 300r/min. The pure copper powder was transformed to Cu2O fundmentally after 3h ball milling while the pure Cu2O with the diameter of 50--100nm was obtained after 70h ball milling. The as-synthesized products were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and transmission electron microscope (TEM). The mechanism of the formation of Cu2O and the effect of milling parameters on the formation of Cu2O were discussed.
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