物理化学学报 >> 1997, Vol. 13 >> Issue (11): 974-977.doi: 10.3866/PKU.WHXB19971104

研究论文 上一篇    下一篇

铜胶体的制备及光谱研究

郑化桂,李亚栋,李成伟,赵化章,刘元辉,钱逸泰   

  1. 中国科学技术大学化学系，中国科学技术大学结构成分开放实验室，合肥 230026
  • 收稿日期:1996-12-06 修回日期:1997-01-26 发布日期:1997-11-15
  • 通讯作者: 李亚栋

Prepration of Copper Colloid and it's Absorption Spectrum

Zheng Hua-Gui,Li Ya-Dong,Li Cheng-Wei,Zhao Hua-Zhang,Liu Yuan-Hui,Qian Yi-Tai   

  1. Department of Chemistry,University of Science and Technology of China Hefei,230026;Structure Research Laboratory Academia Sinica,Hefei 230026
  • Received:1996-12-06 Revised:1997-01-26 Published:1997-11-15
  • Contact: Li Ya-Dong

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摘要：

以水合肼为还原剂通过控制化学还原反应.从硫酸钢溶液中制备出纯金属铜胶体. 研究了表面活性剂的浓度对胶体粒子大小及团聚等的影响，紫外-可见光谱与胶体粒子尺寸及团聚的关系结果表明，在较高浓度的表面活性剂存在下，能有效地防止粒子的团聚，有利于球形小粒子（＜4nm）的生成.

关键词: 铜胶体, 控制还原, 制备, 光谱

Abstract:

The colloid of pure copper was prepared from the solution of copper sulfate with hydrazine by controlling the condition of reductive reaction. The effect of the concentration of surfactant, sodium dodecyl on the size, shape and agglomeration was studied by using UV-Vis, spectrum. It's Shown that the surfactant can effectively prevent the agglomeration of particles and favor the formation of spherical particles smaller than 4nm when the concentration of surfactant is high enough.

Key words: Copper colloid, Control synthesis, UV-Vis spectrum