(1. 西安交通大學 理學院，西安 710049；
2. 西安建筑科技大學 冶金工程學院，西安 710055)
摘 要: 采用硼氫化鉀為還原劑制備分散性好的納米銅粉。研究反應物配比、無水硫酸銅的濃度、反應溫度、分散劑對產(chǎn)物粒徑及轉(zhuǎn)化率的影響。利用SEM表征銅粉的形貌。結(jié)果表明，制備納米銅粉的較好工藝條件是：硼氫化鉀與無水硫酸銅的摩爾比為3׃4，無水硫酸銅的濃度為0.4 mol/L，反應溫度為30 ℃，采用正丁醇為分散劑。所制銅粉顆粒為近球形，平均粒徑約為100 nm。
關鍵字: 納米銅粉；硼氫化鉀；還原法
（1. School of Science, Xi’an Jiaotong University, Xi’an 710049, China;
2. School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China）
Abstract:High dispersive copper nanoparticles were prepared by the chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, dispersant on the size of product and conversion rate were studied. The morphology of copper nanoparticles was characterized by scanning electron microscopy. The results show that the optimum process conditions are as follows: the molar ratio of KBH4 to CuSO4 is 3׃4, the concentration of CuSO4 is 0.4 mol/L, reaction temperature is 30 ℃, and using n-butyl alcohol as dispersant. The average particle size of copper powders with spherical shape gained is about 100 nm.
Key words: copper nanoparticles; potassium borohydride; chemical reduction
