Journal of Applied Electrochemistry

, Volume 23, Issue 6, pp 589–596 | Cite as

Analysis of irreversible oxidation wave of adsorbed CO at Pt(1 1 1), Pt(1 0 0) and Pt(1 1 0) electrodes

  • H. Kita
  • H. Narumi
  • S. Ye
  • H. Naohara
Papers

Abstract

The oxidation wave of CO preadsorbed at 50 mV on Pt(1 1 1), (1 0 0) and (1 1 0) electrodes in phosphate buffer solution of pH 3 was observed as a function of the sweep rate. The sweep rate dependence of the peak current and peak potential, as well as the form of the wave, were examined on the basis of the Gilman mechanism that the electron transfer from a complex consisting of CO and oxygen containing species is the rate-determining step. An electron transfer step from CO itself was excluded. The peak current and peak potential analyses and the wave simulation gave the same value for Δf, the change in the interaction energy during the formation of the activated complex from the reactants. Δf was sweep-rate and surface-structure dependent. The nature of Δf was discussed.

Keywords

Oxidation Oxygen Phosphate Physical Chemistry Phosphate Buffer 

Nomenclature

α

symmetry factor

ε

reversible work required to bring an adsorbed species from its standard state

µ

electrochemical potential

θ

electrode potential referred to the reversible hydrogen electrode

θp

peak potential

Δθ1/2

width at half height of the oxidation wave

(a)

adsorbed state

f(≠)

mutual interaction energy of the activated complex inRT units

f(R)

mutual interaction energy of the reactants in RT units

Δf

f(≠) −f(R)

i

oxidation current density, mA cm−2

ip

peak current, mA CM−2

k

rate constant

Q0

electric charge, mCcm−2

v

sweep rate, m Vs−1

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References

  1. [1]
    J. O'M. Bockris and H. Kita,J. Electrochem. Soc. 108 (1961) 676.Google Scholar
  2. [2]
    B. E. Conway and E. Gileadi,Trans. Faraday. Soc. 58 (1962) 2493.Google Scholar
  3. [3]
    S. Srinivasan and E. Gileadi,Electrochim. Acta 11 (1966) 321.Google Scholar
  4. [4]
    H. Angerstein-Kozlowska, J. Klinger and B. E. Conway,J. Electroanal. Chem. 75 (1977) 45.Google Scholar
  5. [5]
    E. Gileadi and B. E. Conway, ‘Modern Aspects of Electrochemistry’, (edited by J. O'M. Bockris and B. E. Conway), Vol. 3, Butterworth, London (1964) Chapter 5.Google Scholar
  6. [6]
    H. Kita,J. Res. Inst. Catalysis, Hokkaido Univ. 17 (1969) 79.Google Scholar
  7. [7]
    J. Horiuti and H. Kita,ibid. 12 (1964) 122.Google Scholar
  8. [8]
    H. Matsuda, K. Aoki and K. Tokuda,J. Electroanal. Chem. 217 (1987) 1.Google Scholar
  9. [9]
    H. Matsuda, K. Aoki and K. Tokuda,ibid. 217 (1987) 15.Google Scholar
  10. [10]
    B. Beden, C. Lamy, N. R. Tacconi and A. J. Arvia,Electrochim. Acta 35 (1990) 691.Google Scholar
  11. [11]
    J. M. Leger, B. Beden, C. Lamy and S. Bilmes,J. Electroanal. Chem. 170 (1984) 305.Google Scholar
  12. [12]
    J. Clavilier, R. Faure, G. Guinet and R. Durand,ibid. 107 (1980) 205.Google Scholar
  13. [13]
    H. Kita, S. Ye, A. Aramata and N. Furuya,ibid. 295 (1990) 317.Google Scholar
  14. [14]
    H. Kita, K. Shimazu and K. Kunimatsu,ibid. 248 (1988) 163.Google Scholar
  15. [15]
    C. Gutiérrez and J. A. Caram,ibid. 308 (1991) 321.Google Scholar
  16. [16]
    H. Kita, S. Ye and K. Sugimura,ibid. 297 (1991) 283.Google Scholar
  17. [17]
    S. Gilman,J. Phys. Chem. 66 (1962) 2657;67 (1963) 78;67 (1963) 1898;68 (1964) 70.Google Scholar
  18. [18]
    B. Love, K. Seto and J. Lipkowski,J. Electroanal. Chem. 199 (1986) 219.Google Scholar
  19. [19]
    D. Armand and J. Clavilier,ibid. 225 (1987) 205;233 (1987) 251.Google Scholar
  20. [20]
    N. Furuya, S. Motoo and K. Kunimatsu,ibid. 239 (1988) 347.Google Scholar
  21. [21]
    S. Chang and M. J. Weaver,Surf. Sci. 238 (1990) 142.Google Scholar
  22. [22]
    E. Laviron,J. Electroanal. Chem. 52 (1974) 395.Google Scholar
  23. [23]
    A. Sadkowski,ibid. 97 (1979) 283.Google Scholar

Copyright information

© Chapman & Hall 1993

Authors and Affiliations

  • H. Kita
    • 1
  • H. Narumi
    • 1
  • S. Ye
    • 1
  • H. Naohara
    • 1
  1. 1.Department of Chemistry, Faculty of ScienceHokkaido UniversitySapporoJapan

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