【作者】 杨惠芳； 李阳春； 申星梅；

【Author】 YANG Huifang LI Yangchun SHEN Xingmei (Department of Material,Shijiazhuang Railway Institute,Shijiazhuang 050043)

【机构】 石家庄铁道学院材料科学与工程分院；

【摘要】 以无机盐硫酸铜为原料,亚硫酸钠为还原剂,硫氰酸钾为沉淀剂,选择了一种阴离子型的分散刑 N-N 二甲基甲酰胺制备纳米 CuSCN。讨论了影响产物粒径的因素,包括分散剂的用量、反应物的浓度和 pH 值,其最佳工作条件为:分散剂体积为5ml、反应物浓度为0．1mol/L 和 pH=9。用透射电镜、扫描电镜、X 射线衍射仪对产品进行了物性表征,结果表明:其晶粒形态特征符合β-CuSCN 晶粒形态特征,制备出的粒子达到纳米级别。更多还原

【Abstract】 A kind of anionic dispersant,N-N dimethyl formamide,is selected as a dispersant for producing cuprous thiocyanate nanopowders,in which CuSO₄ is reactant,Na₂SO₃ is reducing agent,and KSCN is precipitating a- gent.The factors that influence the size of particles are investigated.These factors include quantities of the dispersant, the concentration of reactants,and pH value.The best conditions are that the volume of the dispersant is 5ml,the con- centration of reactants is 0.1mol/L and the pH value is 9.The physical characteristics of CuSCN nanopowders are characterized by TEM,SEM and XRD.The results indicate that their crystal grain corresponds with β-CuSCN crystal grain morphological character and the size of the particles reaches nanometer.更多还原