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化学学报
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化学学报 ›› 2010, Vol. 68 ›› Issue (10): 961-968. 上一篇    下一篇

研究论文

反应条件对乳液法自组装合成氧化锰纳米粒子结构、形貌和尺寸的影响

朱家艺1,2，贺军辉*,1   

  1. (1中国科学院理化技术研究所 功能纳米材料实验室 北京 100190)
    (2中国科学院研究生院 北京 100049)
  • 投稿日期:2009-08-17 修回日期:2009-11-03 发布日期:2010-01-19
  • 通讯作者: 贺军辉 E-mail:jhhe@mail.ipc.ac.cn

Effects of Reaction Conditions on the Structure, Morphology and Size of Manganese Oxide Nanoparticles

Zhu Jiayi1,2 He Junhui*,1   

  1. (1 Functional Nanomaterials Laboratory, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190)
    (2 Graduate University of Chinese Academy of Sciences, Beijing 100049)
  • Received:2009-08-17 Revised:2009-11-03 Published:2010-01-19
  • Contact: Junhui He E-mail:jhhe@mail.ipc.ac.cn

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通过改变反应物物质的量比、分散相与连续相体积比、反应体系温度和煅烧后处理温度, 研究了反应条件对乳液法自组装合成氧化锰纳米粒子结构、形貌和尺寸的影响. 结果表明: 当高锰酸钾与油酸物质的量比在1∶5～1∶1之间时, 形成蜂窝状纳米粒子和空心纳米粒子; 当分散相(油酸)与连续相(水)的体积比为4∶200时, 形成良好的空心球纳米结构; 反应体系温度升高不利于产物的洗涤; 不同温度的煅烧后处理不仅影响氧化锰纳米粒子的形貌, 而且影响其结晶度和晶型.

关键词: 氧化锰, 纳米粒子, 自组装, 空心纳米结构, 蜂窝纳米结构

Effects of reaction conditions on the structure, morphology and size of manganese oxide nanoparticles were studied by changing the reactant molar ratio, the volume ratio of dispersed phase/continuous phase, the reaction temperature and the post-calcination temperature in their emulsion self-assembly synthesis. The results showed that honeycomb and hollow nanoparticles were obtained in the KMnO4/oleic acid molar ratio range of 1∶5～1∶1. When the volume ratio of dispersed phase (oleic acid)/continuous phase (water) was 4∶200, spherical hollow nanospheres were produced. The increase of reaction temperature was unfavorable to the rinsing of product. Post-calcination at varied temperatures not only influenced the product morphology, but their crystalinity and crystal structure as well.

Key words: manganese oxide, nanoparticle, self-assembly, hollow nanostructure, honeycomb nanostructure