高反应浓度下制备不同形貌氧化亚铜的简易方法  

A Simple Method for the Preparation of Cu_2O with Different Morphologies in High Reaction Concentrations

作　　者：赵华涛[1] 王栋[1] 张兰月[1] 白志平[1] 吴有庭[1] 

机构地区：[1]南京大学化学化工学院,配位化学国家重点实验室,南京大学-金川公司金属化学联合实验室,南京210093

出　　处：《无机化学学报》2009年第1期142-146,共5页Chinese Journal of Inorganic Chemistry

基　　金：国家基础科学人才培养基金(No.J0630425)

摘　　要：在常压,70℃,高反应浓度和不加任何添加剂的条件下,硫酸铜经与NaOH反应后用葡萄糖还原获得了球形、立方体、多面体、星形和正八面体形貌的Cu2O粒子。用X射线粉末衍射,扫描电镜和激光粒度仪对所制备的产品进行了表征。改变反应原料的加料方式和NaOH的浓度可获得不同形貌的Cu2O粒子。在恒温下先加NaOH溶液再加浓度为0.1g·mL-1的葡萄糖溶液的分步加料方式下,当NaOH的浓度依次为0.15、0.225、0.3和0.45g·mL-1时分别得到立方体、多面体、星形、和正八面体;在室温下,NaOH和葡萄糖分步加料后程序升温,得到球形;恒温,氢氧化钠和葡萄糖同时加料方式下产物主要为球形。Spherical, cubic, polyhedral, starlike, and octahedral cuprous oxide （Cu2O） particles were synthesized in high reaction concentrations by reacting copper sulfate with NaOH and then reducing them with glucose subsequently at atmospheric pressure and 70 ℃ without any suffactant. The products were characterized by X-ray powder diffraction （XRD）, scan electron microscopy （SEM） and particle size distribution. The different adding manners of reactants and different concentrations of NaOH resulted in Cu2O particles with different morphologies. Cubic, polyhedral, starlike and octahedral Cu2O particles were obtained respectively by adding NaOH solutions of： 0.15, 0.225, 0.3 and 0.45 g .mL^-1 followed by the adding of a 0.1 g .mL^-1 glucose solution at a fixed temperature. Spherical Cu2O particles were prepared by adding NaOH and glucose solutions in turn and programming the temperature rise subsequently. Most of the particles prepared by adding NaOH solution and glucose solution at the same time were spherical.

关 键 词：氧化亚铜 形貌 高反应浓度 

分 类 号：O614.121[理学—无机化学]