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Silver surfaces in sulfuric acid: Ag(111) – sulfate

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

Abstract

In this chapter the experimental results on adsorption of sulfate ion on Ag(111) surface is described.

In 0.05 M H2SO4 solution, CV shows a characteristic “butterfly”-shaped peak between −0.7 and 0.4 V (Ag/AgCl), and STM reveals a c(3 × 3√3) structure for the adlayer. Adsorption of sulfate from alkaline solution is inhibited due to the strong specific adsorption of OH-. In situ IR measurements demonstrate specific SO42− adsorption, but the potential dependence of the sulfate coverage indicates significant repulsion between the adsorbed sulfate anions. It appears that on the (111) surface of sp-metals, like Ag and Au, the adsorbed species is SO42− (sulfate), while on the d-metal Pt, the predominant species is HSO4 (bisulfate) [1, 2].

Symbols and abbreviations

Short form

Full form

STM

scanning tunneling microscopy

IR

infrared

References

  1. 1.
    Schweizer, M., Kolb, D.M.: Surf. Sci. 544, 93 (2003)ADSCrossRefGoogle Scholar
  2. 2.
    Marinkovic, N.S., Marinkovic, J.S., Adzic, R.R.: J. Electroanal. Chem. 467, 291 (1999)CrossRefGoogle 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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