高等学校化学学报

高等学校化学学报 ›› 1987, Vol. 8 ›› Issue (11): 1026.

• 论文 • 上一篇    下一篇

PVP和SDS在固液界面上的混合吸附

马季铭   

  1. 北京大学化学系
  • 收稿日期:1986-05-23 出版日期:1987-11-24 发布日期:1987-11-24

The Mixed Adsorption of PVP and SDS at Solid/Liquid Interface

Ma liming   

  1. Department of Chemistry, Peking University, Beijing
  • Received:1986-05-23 Online:1987-11-24 Published:1987-11-24

PDF (PC)

被引次数

5

摘要： 实验测定了PVP和SDS自其混合溶液在碳黑及TiO2表面上的吸附。在TiO2表面上,当溶液中SDS的浓度低于4×10-3mol·dm-2时,PVP与SDS的吸附互相增强;当SDS的浓度更高时,则彼此对抗。在碳黑表面上,SDS与PVP表现为单纯的竞争吸附。根据SDS与PVP之间复合物的形成和吸附剂的表面性质讨论了实验结果。

Abstract: The adsorption of SDS and PVP from their mixed solutions onto TiO2and carbon black has been determined exprimentally. On the surface of TiO2, the adsorption of SDS and PVP shows synergistic effects at low SDSconcentrations and antagonistic effects at high SDS concentrations. On the surface of carbon black, the adsorption of PVP and SDS shows to be merely competitive. The experimental results were discussed in terms of the complex formation between PVP and SDS, as well as by the polarity of the solid surfaces.

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