Elsevier

Electrochimica Acta

Volume 23, Issue 10, October 1978, Pages 1009-1018
Electrochimica Acta

Voltammetric investigation of thallium adsorption on silver single crystal electrodes

https://doi.org/10.1016/0013-4686(78)85007-5Get rights and content

Abstract

The adsorption behaviour of Tl+ on Ag(100) and Ag(111) in 0.5 M NaClO4 and Na2SO4 has been studied by voltammetric methods including flow-through thin layer voltammetry (FTTL) and single electrode thin layer voltammetry (STL). The Tl-deposits formed on both electrode substrates exhibit the ideal charge stoichiometry of metal monolayer adsorbates, indicating the absence of anion adsorption. The adsorption on Ag(100) can be characterized by an equilibrium Γ(E)-isotherm compatible with a stepwise formation of three stable sorption layers. The Tl-deposit on Ag(111) features the successive build up of two adsorbate layers. In case of incomplete formation of the first layer, however, a slow structural transformation occurs, involving a strong interaction with the Ag(111) substrate and accompanied by partial Tl-desorption. The complex behaviour of this system is interpreted in terms of internal strain within the Tl-superlattice structures.

References (17)

  • HilbertF. et al.

    J. electroanal. Chem.

    (1973)
  • StaikovG. et al.

    Electrochim. Acta

    (1978)
    StaikovG. et al.

    Electrochim. Acta

    (1978)
  • JüttnerK. et al.

    J. electroanal. Chem.

    (1977)
  • BewickA. et al.

    J. electroanal. Chem.

    (1975)
  • BewickA. et al.

    J. electroanal. Chem.

    (1976)
  • K. Jüttner, H. Bort, W. J. Lorenz and E. Schmidt, J. electroanal. Chem., in...
  • K. Jüttner and H. Siegenthaler, Electrochim. Acta, in...
  • HuntingtonY.L. et al.

    J. chem. Instr.

    (1969)
There are more references available in the full text version of this article.

Cited by (0)

View full text