高等学校化学学报 ›› 1997, Vol. 18 ›› Issue (12): 1921.

• 论文 • 上一篇    下一篇

混合溶剂中纳米级NiO的制备及表征

李亚栋, 李成韦, 郑化桂, 李龙泉, 段镶锋, 钱逸泰   

  1. 中国科技大学化学系, 合肥 230026
  • 收稿日期:1996-10-06 出版日期:1997-12-24 发布日期:1997-12-24
  • 通讯作者: 李亚栋, 男, 32岁, 讲师.
  • 作者简介:李亚栋, 男, 32岁, 讲师.
  • 基金资助:

    安徽省科委科研计划项目

Preparation and Characterization of Nanocrystalline NiO in Mixed Solvent

LI Ya-Dong, LI Cheng-Wei, ZHENG Hua-Gui, LI Long-Quan, DUAN Xiang-Feng, QIAN Yi-Tai   

  1. Department of Chemistry, Structure Research Laborxitory,University of Science and Technology of China, Hefei 230026
  • Received:1996-10-06 Online:1997-12-24 Published:1997-12-24

摘要: 以Ni(NO3)2和NH4HCO3为原料,在乙醇一水混合溶剂中,通过化学沉淀法制备出一种深绿色非品前驱物,400℃分解即得产物NiO.产物及其前驱物的热分析、X射线衍射和透射电镜研究表明,前驱物是一种组成为NICO3·2Ni(OH)2·2H2O的无定型非晶体,产物为粒度分布均匀、分散性好的球形纯立方相NiO纳米晶,平均粒度为7nm.该法成功地克服了湿化学法制备超微粒子过程中的团聚问题.

关键词: 纳米晶, 氧化镍, 制备

Abstract: NiOnanocrystalline materials were prepared by decomposing a deep green non-crystal precursor at 4OO℃.The precursor was obtained in alcohol-water mixed solvent bythe reaction of Ni(NO3)2 and NH4HCO3. XRD, TG, DTAand TEMwere used to character-ize the nanometer NiOand its precursor.The result show that the NiOfine particles arenon-agglomerated, spherical and well dispersed with the average size of 7 nm.The problemof agglomeration in c0nventional solution method is Overcomed by this convenient method.

Key words: Nanocrystalline, Nickel oxide, Preparation

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