微米级氧化铜(CuO)块状晶体粉末的制备与表征

Preparation and Characterization of CuO Bulk Crystals

文章利用一种新颖的浓缩沉淀结合后续热处理的方法制备成功微米级氧化铜块状晶体粉末。采用热重分析(TGA)、差式量热扫描(DSC)、X射线衍射(XRD)、扫描电镜(SEM)等分析手段对所获得的前驱体以及煅烧后的粉末进行了表征。结果表明,经过浓缩法制备的前驱体为一种碱式硝酸铜(Cu4(NO3)2(OH)6)粉末,这种前驱体粉末在235℃左右分解成氧化铜(CuO),CuO粉末的平均粒径约为5μm且为一种块状晶体粉末。

In this paper, copper oxide（CuO）crystals were successfully synthesized by a novel concentration- precipitation and post- calcination method. The morphology, thermal bahavior and phase structure of samples were investigated by scanning electron microscopy（SEM）, X- ray diffraction（XRD）and thermal gravity analysis （TGA）and differential scanning calorimetry（DSC）, etc. The results showed that the precursors were Cu4 （NO3）2 （OH）6, and transformation from Cu4（ NO3）2（OH）6 to CuO were carried out at 220- 240 ℃, and CuO powders were bulk crystals with an average size of 5 μm.