标题:
球形单分散Cu2O纳米粉体的制备Synthesis of Spherical and Monodispersed Cu2O Nanometer Powders
作者:
朱归胜, 颜东亮, 杨会娟, 赵昀云, 高康
关键字:
氧化亚铜(Cu2O), 单分散, 纳米粉体Cuprous Oxide (Cu2O); Monodispersed; Nanopowders
期刊名称:
《Hans Journal of Nanotechnology》, Vol.2 No.2, 2012-05-15
摘要:
硫酸铜和适量氨水反应形成铜氨络合物并加入葡萄糖溶液，最后加入NaOH溶液，制备了平均粒径为200 nm，比表面积为5.1 m2/g的球形氧化亚铜粉体，由SEM、激光粒度测试仪和BET三种方法分析得到的粉末平均粒径相吻合，证明制备得到的粉末是单分散状态的。XRD显示产物为立方相的氧化亚铜，未出现金属铜的衍射峰。实验发现，产物粒径随氨水用量和硫酸铜初始反应浓度的增加而减小，葡萄糖用量和反应温度对产物粒径和均匀性也有着重要影响。
Spherical and monodispersed cuprous oxide (CuO2) powder with 200 nm particle size and 5.1 m2/g special surface area were prepared by reacting CuSO4•5H2O with appropriate amount of NH3∙H2O, glucose and NaOH. Characterizations of X-ray diffraction, laser particle size analysis, scanning electron microscopy and Brunauer-Emmett- Teller analysis confirmed that the as-prepared powder is monodispersed. It has been found increasing the NH3∙H2O concentration (from 0 to 4.0 mol/l) and the initial CuSO4•5H2O concentration (from 0.5 mol/l to 1.5 mol/l) is propitious to preparation of monodispersed CuO2 powders with small particle size. Additionally, reaction temperature and dosage of glucose affect the powder particle size and dispersion behavior.