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Hydrohalic acid anion interaction with silver surfaces: Ag(100) – chloride

  • M. NowickiEmail author
  • K. Wandelt
Chapter
Part of the Condensed Matter book series (volume 45B)

Abstract

In this chapter the experimental results on adsorption of chloride on Ag(100) surface is described.

The onset of chloride adsorption on Ag(100) in 0.02 M KCl + 0.03 M KClO4 solution is characterized by an initial broad CV peak (from about −1.1 to about −1.0 V (SCE = saturated calomel electrode)) corresponding to a lattice gas phase. A sharp peak at −0.63 V (SCE) indicates the onset of an ongoing transformation of the lattice gas into an ordered c(2 × 2) structure. Like in UHV the anions reside in fourfold hollow sites. The c(2 × 2) phase is stable until at potentials E > −0.20 V (SCE) complex AgClx surface compounds are formed. Long-range interactions are dominated by electrostatic dipole-dipole interactions between the electrosorbedCl anions (Cl is the most electronegative among the three halides Cl, Br, I.) [1, 2, 3, 4].

Symbols and abbreviations

Short form

Full form

UHV

ultrahigh vacuum

SCE

saturated calomel electrode

References

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    Fu, H., Jia, L., Wang, W., Fan, K.: Surf. Sci. 584, 187 (2005)ADSCrossRefGoogle Scholar

Copyright information

© Springer-Verlag GmbH Germany 2018

Authors and Affiliations

  1. 1.Institute of Experimental PhysicsUniversity of WroclawWroclawPoland
  2. 2.Institute of Physical and Theoretical ChemistryUniversity of BonnBonnGermany

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