摘要
以硼氢化钾为还原剂、硫酸铜为氧化剂,并添加氨水为络合剂,采用还原法成功地制备纳米铜.通过XRD和TEM对纳米铜进行了表征,结果显示,在溶剂乙二醇和分散剂聚乙二醇作用下,得到纳米铜为单晶,球形,直径为30～50nm,且无其他的氧化物存在.探讨了溶剂和分散剂对合成纳米铜的影响,表明在有机溶剂乙二醇中可以明显防止其氧化;在聚乙二醇分散剂作用下,可以增加粒子的分散性及均一性.
Copper nanoparticles were successfully prepared by reduction method using potassium borohydride as reducing agent,copper sulfate as oxidant,polyethylene glycol as dispersant. XRD and TEM results showed that single crystal,spherical,diameter of 30~50 nm nano-copper was obtained with ethylene glycol as the solvent and with polyethylene glycol as dispersant,other oxide can not be detected. The effect solvent and dispersant on the synthesis of nano-copper was studied. It is showed that the organic solvents could significantly prevent the oxidation of the nano-copper. The polyethylene glycol dispersant could increase dispersion and uniformity of the nano-copper particle.
出处
《材料研究与应用》
CAS
2010年第4期428-432,共5页
Materials Research and Application
关键词
纳米铜
还原法
分散剂
单晶
nano copper
reduction method
dispersant
single crystal
