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Issue
Korean Journal of Chemical Engineering,
Vol.14, No.6, 533-540, 1997
Selectivity of Heavy Metal Ions at Acidic Supramolecular Surfaces
Hyun JY, Lee GS, Kim TY, Ahn DJ
Langmuir monolayers containing surface carboxylic acid head groups were examined in order to characterize their selectivity to metal ion adsorption. Experimental data of ion adsorption obtained by surface isotherms and FTIR spectroscopy were analyzed using a thermodynamic-and-electrochemical model. Among bivalent ions examined (Cr2+, Pb2+, Cu2+, Cd2+, Zn2+, Ca2+, Ni2+, and Ba2+), Langmuir monolayers showed the highest selectivity to chromium ions. In addition, it was found that adsorption constants of the surface ions are quite different from binding constants of the bulk ions. The results show important implications to sensing and separating metal ions by the use of acidic supramolecular materials.
Keywords: Supramolecules; Langmuir Monolayers; Interfaces; Metal Ion Adsorption; FTIR Spectroscopy
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[Cited By]
  1. Kim TY, Lee GS, Ahn DJ, Korean Journal of Chemical Engineering, 18(6), 977, 2001
  2. Lee GS, Lee JH, Choi H, Ahn DJ, Korean Journal of Chemical Engineering, 27(2), 697, 2010
  3. Park Jh, Ahn DJ, Korean Journal of Chemical Engineering, 34(7), 2092, 2017
  4. Lee GS, Kim TY, Ahn DJ, Journal of Industrial and Engineering Chemistry, 67, 312, 2018
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