ISSN: 1003-6326
CN: 43-1239/TG
CODEN: TNMCEW

Vol. 20    Special 1    May 2010

Preparation of copper nanoparticles by chemical reduction method using potassium borohydride
ZHANG Qiu-li(张秋利)1, YANG Zhi-mao(杨志懋)2, DING Bing-jun(丁秉钧)2,
LAN Xin-zhe(兰新哲)1, GUO Ying-juan(郭莹娟)1
(1. School of Metallurgical Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China;
2. School of Science, Xi’an Jiaotong University, Xi’an 710049, China
)
Abstract: High dispersive copper nanoparticles were prepared by chemical reduction method using potassium borohydride as reducing agent. The effects of reactant ratio, concentration of CuSO4, reaction temperature, and dispersant on the size of product and conversion rate were studied. The morphologies of copper nanoparticles were characterized by scanning electron microscopy. The results show that the optimum process conditions are as follows: the molar ratio of KBH4 to CuSO4 is 0.75 (3׃4), concentration of CuSO4 is 0.4 mol/L, reaction temperature is 30 ℃, and dispersant is n-butyl alcohol. The average particles size of copper powders with spherical shape gained is about 100 nm.
Key words: copper; nanoparticles; potassium borohydride; chemical reduction
Superintended by The China Association for Science and Technology (CAST)
Sponsored by The Nonferrous Metals Society of China (NFSOC)
Managed by Central South University (CSU)