以五水合硫酸铜和碳酸钠为原料,制备了碱式碳酸铜微球前驱体;以碱式碳酸铜微球为模板,以硫代乙酰胺为硫源,通过简单的沉淀转化反应制备了空心硫化铜微球。考察了反应物摩尔比、溶液浓度、表面活性剂的添加对碱式碳酸铜微球形貌与粒径的影响,以及硫离子浓度对空心硫化铜微球表面形貌的影响,并对其形成机理进行了探讨。采用扫描电子显微镜及X射线衍射仪对产物的结构及微观形貌进行表征。结果表明,只有碳酸钠过量时才会形成碱式碳酸铜微球;改变五水合硫酸铜和碳酸钠的摩尔比及浓度可以调节产物的粒径;添加不同表面活性剂可以使产物产生不同形貌;硫化铜微球的粒径由碱式碳酸铜微球的粒径决定,随着硫离子浓度的增加,硫化铜微球表面分别呈现出刺状、颗粒状及平面状等不同结构。
Basic copper carbonate precursor was prepared by copper sulfate(CuS) pentahydrate and sodium carbonate as raw materials.Using thioacetamide as sulfur source,hollow CuS microspheres structure were prepared by a sample precipitate-converting reaction.The effects of molar ratio of reactants,solution concentration,addition of surfactant on the morphology and particle size of the basic microspheres was investigated,and discussed the effects of sulphur ion concentration on the morphology,and the formation mechanism.The products were characterized by scanning electron microscopy,X-ray diffraction.The results shown that alkaline copper carbonate microspheres are formed only in excess of sodium carbonate.The particle size of the product can be adjusted by changing the molar ratio and concentration of CuS pentahydrate and sodium carbonate.Adding different surfactants can make the products had different morphologies.The particle size of the microspheres was determined by the particle size of basic copper carbonate microspheres.With the increase of sulfur ion concentration,the surface of the microspheres presented spiny,granular and planar structure respectively.
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