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Gold surfaces in sulfuric acid: Au(111) – sulfate

  • 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 sulfate ion on Au(111) surface is described.

Combined STM and CV measurements in 0.1 M H2SO4 + 0.1 M H3PO4 solution indicate SO42− adsorption into a disordered sulfate adlayer accompanied by lifting of the gold reconstruction at 0.35 V (SCE) and a phase transition at about 0.8 V (SCE) into an ordered (√3 × √7)R19.1° structure. SXS data support the notion that reconstructed Au(111) (like the Au(100)) surface at 0.0 V (Ag/AgCl) is covered by an attached submonolayer of an oxygen species, probably water, which at +0.95 V SO42− is co-adsorbed with hydronium cations on the unreconstructed Au(111) surface (as also supported by IR) [1, 2].

Symbols and abbreviations

Short form

Full form

SCE

saturated calomel electrode

SXS

surface X-ray scattering

STM

scanning tunneling microscopy

IR

infrared

References

  1. 1.
    Cuesta, A., Kleinert, M., Kolb, D.M.: Phys. Chem. Chem. Phys. 2, 5684 (2000)CrossRefGoogle Scholar
  2. 2.
    Kondo, T., Morite, J., Hanaoka, K., Takakusagi, S., Tamura, K., Takahasi, M., Mizuki, J., Uosaki, K.: J. Phys. Chem. C 111, 13197 (2007)Google 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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