Journal of Applied Electrochemistry

, Volume 13, Issue 6, pp 743–750 | Cite as

Photoelectrochemical reactions of FeS2 (pyrite) with H2O and reducing agents

  • W. Jaegermann
  • H. Tributsch
Papers

Abstract

The photoelectrochemical behaviour of natural and synthetic FeS2 (pyrite) has been investigated. In all cases anodic photocurrents have been observed. From photocurrent spectra an energy band gap of 0.9 eV has been determined. The reaction of photogenerated holes produced on d-states of the Fe2+ ions with water leads to the formation of SO42− as a corrosion product. This is contrary to the photoreaction of RuS2 with H2O which yields oxygen, although the crystal as well as the electronic structure of both compounds is equivalent. The differences are discussed in terms of the transition metal chemistry of iron and ruthenium, respectively. Like with other d-band semiconductors a shift of the onset of photocurrents with the redox potential of electron donors has been observed. This study is part of systematic investigations of catalytic requirements for the photoelectrolysis of water.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. [1]
    H. Tributsch,Struct. Bonding 49 (1982) 127.Google Scholar
  2. [2]
    L. F. Schneemeyer and M. S. Wrighton,J. Amer. Chem. Soc. 101 (1979) 6496.Google Scholar
  3. [3]
    H. Tributsch and O. Gorochov,Electrochim. Acta 82 (1982) 45.Google Scholar
  4. [4]
    H. Tributsch,Z. Naturforsch. 32a (1977) 972.Google Scholar
  5. [5]
    R. Heindl, R. Parsons, A. M. Redon, H. Tributsch and J. Vigneron,Surf. Sci. 115 (1982) 91.Google Scholar
  6. [6]
    H. Ezzaouia, R. Heindl, R. Parsons, and H. Tributsch,J. Electroanal. Chem. in press.Google Scholar
  7. [7]
    G. Brostigen and A. Kjekshus,Acta Chem. Scand. 23 (1969) 2186.Google Scholar
  8. [8]
    T. A. Bither, R. J. Bouchard, W. H. Cloud, P. C. Donohue and W. J. Siemons,Inorg. Chem. 7 (1968) 2208.Google Scholar
  9. [9]
    R. Benoit,J. Chem. Phys. 52 (1955) 119.Google Scholar
  10. [10]
    E. K. Li, K. H. Johnson, D. E. Eastman and J. L. Freeouf,Phys. Rev. Lett. 32 (1974) 470.Google Scholar
  11. [11]
    D. W. Bullet,J. Phys. C. 15 (1982) 6163.Google Scholar
  12. [12]
    H. van der Heide, R. Hemmel, C. F. van Bruggen and C. Haas,J. Solid State Chem. 33 (1980) 17.Google Scholar
  13. [13]
    F. Hulliger,Nature 200 (1963) 1064.Google Scholar
  14. [14]
    F. Hulliger and E. Mooser,J. Phys. Chem. Solids 26 (1965) 429.Google Scholar
  15. [15]
    R. T. Shuey, ‘Semiconducting Ore Minerals’, Elsevier, London (1975).Google Scholar
  16. [16]
    M. Pourbaix, ‘Atlas d'Equilibres Electrochimiques’, Gauthier-Villars et G., Paris (1963).Google Scholar
  17. [17]
    G. Springer,Inst. Mining Met. Trans. Sect. C 79 (1970) C11.Google Scholar
  18. [18]
    E. Peters and H. Majima,Can. Met. Quart.,7 (1969) 111.Google Scholar
  19. [19]
    T. Biegler, D. A. J. Rand and R. Woods,J. Electroanal. Chem. 60 (1975) 151.Google Scholar
  20. [20]
    T. Biegler,ibid. 70 (1976) 265.Google Scholar
  21. [21]
    R. F. Meyer,J. Electroanal. Chem. 101 (1979) 59.Google Scholar
  22. [22]
    A. Heller, B. Miller, H. J. Lewerenz, and K. J. Backmann,J. Amer. Chem. Soc. 102 (1980) 6555.Google Scholar
  23. [23]
    F. A. Cotton and G. Wilkinson, ‘Advanced Inorganic Chemistry’, 3rd edn, Interscience Publishers, New York (1972).Google Scholar
  24. [24]
    Sutarno, O. Knop and K. I. G. Reid,Can. J. Chem. 45 (1967) 1391.Google Scholar
  25. [25]
    H. J. Lewerenz, S. Stucki and R. Kötz,Surf. Sci. in press.Google Scholar
  26. [26]
    V. Ya. Shafirovich and V. V. Strelets,Nouv. J. Chim. 6 (1982) 183.Google Scholar
  27. [27]
    Th. Carlson, ‘Photoelectron and Auger Spectroscopy’, Plenum Press, New York (1975).Google Scholar
  28. [28]
    D. Briggs (ed.), ‘Handbook of X-ray and Ultraviolet Photoelectron Spectroscopy’, Heyden, London (1977).Google Scholar
  29. [29]
    A. Müller, W. Jaegermann and J. H. Enemark,Coord. Chem. Rev. 46 (1982) 245.Google Scholar
  30. [30]
    L. Vaska,Acc. Chem. Res. 9 (1976) 175.Google Scholar
  31. [31]
    A. J. Bard, A. B. Bocarsly, F. -R. F. Fan, E. G. Walton and M. S. Wrighton,J. Amer. Chem. Soc. 102 (1980) 3671.Google Scholar
  32. [32]
    J. C. Marinace,Phys. Rev. 96 (1954) 593.Google Scholar
  33. [33]
    R. Memming and F. Möllers,Ber. Bunsenges. Phys. Chem. 76 (1976) 475.Google Scholar

Copyright information

© Chapman and Hall Ltd. 1983

Authors and Affiliations

  • W. Jaegermann
    • 1
  • H. Tributsch
    • 1
  1. 1.Bereich StrahlenchemieHahn-Meitner-Institut für Kernforschung Berlin GmbHBerlin 39Federal Republic of Germany

Personalised recommendations