物理化学学报 >> 1996, Vol. 12 >> Issue (05): 460-463.doi: 10.3866/PKU.WHXB19960515

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溶液还原法制备球形超细镍粉

沈勇,张宗涛,赵斌,朱裕贞,胡黎明   

  1. 华东理工大学国家超细粉末工程研究中心，化学系，上海 200237
  • 收稿日期:1995-08-09 修回日期:1995-11-20 发布日期:1996-05-15
  • 通讯作者: 张宗涛

Preparation of Spherical Ultrafine Nickel Powder by Chemical Reduction in Aqueous Solution

Shen Yong,Zhang Zong-Tao,Zhao Bin,Zhu Yu-Zhen,Hu Li-Ming   

  1. National Engeneering and Research Center of Ultrafine Powder,Department of Chemistry,East China University of Science and Technology,Shanghai 200237
  • Received:1995-08-09 Revised:1995-11-20 Published:1996-05-15
  • Contact: Zhang Zong-Tao

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关键词: 超细镍粉制备, 化学还原

Abstract:

All kinds of spherical ultrafine nickel powders, varied in mean particle size (0.1-5μm),were prepared by chemical reduction in aqueous solution. The pH effect on the production of nickel powder and the main factors of their morphological control were studied. The nickel powder with purity 98.5% was obtained in the Na2CO3-NaHCO3 buffer system at pH 9.2-11. The surface-rubbed stirring oar helped to the preparation of nickel particles. The mean particle size was decreased to submicron range by using AgNO3 as nucleating agent. PVP was an efficient agent to regulate particle shape and reduce aggregation.

Key words: Ultrafine nickel powder preparation, Chemical reduction