物理化学学报 >> 2005, Vol. 21 >> Issue (05): 569-572.doi: 10.3866/PKU.WHXB20050522

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一种制备镍纳米颗粒的新方法

陶小军; 李志伟; 陈洪杰; 张平余; 张治军; 吴志申; 党鸿辛   

  1. 河南大学特种功能材料重点实验室, 开封    475001
  • 收稿日期:2004-09-29 修回日期:2004-12-20 发布日期:2005-05-15
  • 通讯作者: 张治军 E-mail:txj17582557@henu.edu.cn

A New Approach to Synthesize Nickel Nanoparticles

TAO Xiao-Jun; LI Zhi-Wei; CHEN Hong-Jie; ZHANG Ping-Yu; ZHANG Zhi-Jun; WU Zhi-Shen; DANG Hong-Xin   

  1. The Key Laboratory of Special Functional Materials, Henan University, Kaifeng    475001
  • Received:2004-09-29 Revised:2004-12-20 Published:2005-05-15
  • Contact: ZHANG Zhi-Jun E-mail:txj17582557@henu.edu.cn

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摘要： 通过超声照射使2-乙基己酸镍和金属钠在液体石蜡中发生置换反应, 成功地制备了具有六方晶型结构的表面修饰镍纳米颗粒, 并采用多种现代分析手段如TEM、ED、XRD、XPS和TG对所制备的产品进行结构、形貌和热稳定性能的表征. 结果表明, 所制得的镍纳米颗粒粒径较小, 分布范围在7～43 nm之间, 并有着良好的热稳定性能.

关键词: 置换反应, 钠, 超声照射, 镍纳米颗粒

Abstract: Nickel nanoparticles were successfully synthesized by a replacement reaction of nickelous 2-ethylhexanoate with metal sodium in liquid paraffin under ultrasonic irradiation. The morphology, structure and thermal stability of the samples obtained were characterized with TEM, ED, XRD, XPS and TG. The TEM and ED results reveal that the produced nickel nanoparticles have single crystal structure and their size distribution is relatively narrow. XRD and XPS analyses display that the produced nickel nanoparticles possess the same hexagonal crystal structure as bulk nickel materials and there is a very small fraction of Ni(Ⅱ) on the surface of the Ni nanoparticles, respectively. In addition, the result of TG indicates that the as-synthesized samples have high thermostability.

Key words: Replacement reaction, Sodium, Ultrasonic irradiation, Nickel nanoparticles