高等学校化学学报

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超声膜扩散法制备纳米银粒子

王振阳, 关晓, 何洪, 戴洪兴, 訾学红   

  1. 北京工业大学环境与能源工程学院化学化工系, 北京 100022
  • 收稿日期:2007-04-03 修回日期:1900-01-01 出版日期:2007-09-10 发布日期:2007-09-10
  • 通讯作者: 何洪

Preparation of Ag Nanoparticles by Ultrasound-assisted Membrane Reaction

WANG Zhen-Yang, GUAN Xiao, HE Hong*, DAI Hong-Xing, ZI Xue-Hong   

  1. Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100022
  • Received:2007-04-03 Revised:1900-01-01 Online:2007-09-10 Published:2007-09-10
  • Contact: HE Hong

摘要: 采用超声膜扩散(Ultrasound-assisted reaction method, UAMR)的方法, 以NaBH4还原溶液中的银离子, 在聚乙烯吡咯烷酮(PVP)为稳定剂的条件下, 制备出了平均粒度为4.7 nm的银纳米粒子. 与超声滴加法(Ultrasound-assisted dropping reaction method, UADR)相比, 超声膜扩散法制备出来的银纳米粒子的粒径小, 且尺寸分布较窄.

关键词: 银, 纳米粒子, 超声膜扩散法

Abstract: Ag nanoparitcles were prepared via Ultrasound-assisted Membrane Reaction(UAMR) method. The key issue of the method is to control precisely the injection speed of the reactants by pulseless pump to make the nanoparticles of Ag with small size and narrow size distribution. The size and morphology of silver nanoparticles were characterized with Transmission Electron Microscope(TEM) and UV-Vis spectrum. The experiment results show that the size of Ag nanoparticles prepared via UAMR method was smaller than that via Ultrasound-assisted Dropping Reaction(UADR) method. The size of 80% Ag nanoparticles prepared via UAMR was ranged from 3 nm to 5 nm with the mean particle size 4.7 nm and considerable narrow size distribution. The Ag hydrosol fabricated via UAMR method was very stable at room temperature, even within three months.

Key words: Silver, Nanoparticles, Ultrasound-assisted membrane reaction(UAMR)

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