pH值对电化学制备纳米铜粉的影响

来源期刊：有色金属2011年第2期

论文作者：徐建林 陈纪东 杨树华

文章页码：86 - 89

关键词：金属材料； 纳米铜粉； 电化学法； pH

Key words：metal material； copper nanoparticle； electrochemical process； pH

摘    要：在十二烷基硫酸钠、吐温80、十二烷基硫醇和硫酸铜混合而成的乳液中,采用电化学合成方法制备稳定的、粒径均匀的Cu纳米颗粒。应用XRD,TEM及FT-IR对所制备的Cu纳米颗粒的结构、形貌及粒径大小进行表征。结果表明,随着pH值的增大,纳米铜粉的尺寸、分散性及颗粒分布范围发生显著的变化。当pH为0.5时,可以制备得到尺寸较小、分散性较好,颗粒分布较窄的纳米球形颗粒。随着pH值增大,纳米颗粒的尺寸也随之增大。

Abstract: The copper nanoparticles are prepared by electrochemical method in emulsion containing sodium dodecyl sulfate,tween80,dodecyl mercaptan and CuSO₄·5H₂O.The resulting copper nanoparticles are characterized by XRD,TEM and FT-IR.The results show that the nanoparticle size,dispersibility and distribution of particle size have an obvious change with the increase of pH value.It can be found that the copper nanoparticle with small size,well dispersibility and narrow distribution of particle size can be obtained under the pH value of 0.5.The diameter of the nanoparticle is increased with the increase of pH value.