Get charged up: Nonlinear optical voltammetry for quantifying the thermodynamics and electrostatics of metal cations at aqueous/oxide interfaces

Patrick L. Hayes, Jessica N. Malin, David S. Jordan, Franz M Geiger

Research output: Contribution to journalArticlepeer-review

44 Scopus citations

Abstract

This Letter provides a tutorial review of how the Eisenthal χ(3) Technique can be applied as a general method for quantifying (1) the amount of metal ions adsorbed, (2) the electrostatics associated with the adsorption processes, and (3) the thermodynamics, kinetics, and molecular mechanisms that underlie the interaction of the metal ions with aqueous/solid interfaces. We focus on our recent effort to quantify potentials at aqueous/solid interfaces in the presence of magnesium, calcium, strontium, and barium cations and determine alkaline earth metal ion adsorption thermodynamics at pH 7 and 10 mM NaCl. Important theoretical considerations for this method are discussed as well.

Original languageEnglish (US)
Pages (from-to)183-192
Number of pages10
JournalChemical Physics Letters
Volume499
Issue number4-6
DOIs
StatePublished - Oct 29 2010

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Physics and Astronomy(all)

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