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Adsorption of Caesium Tetraphenylborate from Aqueous Solutions on Glass, Polyethylene and Polytetrafluoroethylene

Nature volume 211, pages 631–632 (1966)Cite this article

Abstract

IT has previously been shown1–4 that polyethylene (PE) and polytetrafluoroethylene (PTFE), unlike glass, do not act as cation exchangers. The adsorption of caesium from aqueous solutions on hydrophobic surfaces of PE and PTFE was negligible. This suggests a possible mechanism for such adsorption. PE and PTFE surfaces in aqueous solution acquire negative charge owing to adsorption of hydroxyl ions. These adsorbed ions may then attract caesium ions by electrostatic forces. In accordance with this hypothesis the adsorption values and the surface charge increase with pH. Comparing the adsorption values for caesium, thallium and silver ions on PE and PTFE4 provides further evidence for a correlation between the adsorbability and the affinity of corresponding ions to hydroxyl groups.

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Authors and Affiliations

  1. Sechenov Institute of Evolutionary Physiology and Biochemistry, U.S.S.R. Academy of Sciences, Leningrad

    I. A. SKUL'SKII & V. V. GLASMOV

Authors
  1. I. A. SKUL'SKII
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  2. V. V. GLASMOV
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SKUL'SKII, I., GLASMOV, V. Adsorption of Caesium Tetraphenylborate from Aqueous Solutions on Glass, Polyethylene and Polytetrafluoroethylene. Nature 211, 631–632 (1966). https://doi.org/10.1038/211631a0

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