Journal of Materials Science

, Volume 44, Issue 4, pp 1029–1034 | Cite as

Photocatalytic decomposition of methylene blue via Fenton mechanisms by silicon wafer doped with Au and Cu: a theoretical and experimental study

  • Teodorico C. RamalhoEmail author
  • Hudson W. P. Carvalho
  • Ana P. L. Batista
  • Carlos A. Pérez
  • Angelo L. Gobbi


In this work, we studied the photocatalytic and the structural aspects of silicon wafers doped with Au and Cu submitted to thermal treatment. The materials were obtained by deposition of metals on Si using the sputtering method followed by fast heating method. The photocatalyst materials were characterized by synchrotron-grazing incidence X-ray fluorescence, ultraviolet-visible spectroscopy, X-ray diffraction, and assays of H2O2 degradation. The doping process decreases the optical band gap of materials and the doping with Au causes structural changes. The best photocatalytic activity was found for thermally treated material doped with Au. Theoretical calculations at density functional theory level are in agreement with the experimental data.


Methylene Blue Photocatalytic Activity H2O2 Decomposition H2O2 Degradation Density Functional Method B3LYP 



We are grateful to the FAPEMIG, FAPESP and CNPq for funding part of this work and CENAPAD-SP for the computational facilitie. This work has been supported by the Brazilian Synchrotron Light Source (LNLS) under proposal D09B-XRF 6637/07.


  1. 1.
    Brown MA, Devito SC (1993) Crit Rev Environ Sci Technol 23:249CrossRefGoogle Scholar
  2. 2.
    Oliveira LCA, Gonçalves M, Oliveira DQL, Guarieiro ALN, Pereira MC (2007) Quim Nova 30:925CrossRefGoogle Scholar
  3. 3.
    Guerreiro MC, Oliveira LCA, Fabris JD, Gonçalves M, Sapag K, Ramalho TC (2007) Appl Catal A 316:117CrossRefGoogle Scholar
  4. 4.
    Pera-Titus M, Garcıa VM, Banos MA, Gimenez J, Esplugas S (2004) Appl Catal B 47:219CrossRefGoogle Scholar
  5. 5.
    Wen-Dar H, Chen-Chi M (1997) Infrared Phys Technol 38:123CrossRefGoogle Scholar
  6. 6.
    Lee C, Yang M, Parr RG (1988) Phys Rev B 37:785CrossRefGoogle Scholar
  7. 7.
    Liu Y, Li M, Suo Y (2006) Surf Sci 600:5117CrossRefGoogle Scholar
  8. 8.
    Klockenkamper R, Becker HW, Bubert H (2002) Spectrochim Acta B 57:1593CrossRefGoogle Scholar
  9. 9.
    Benazzouz C, Benouattas N, Bouabellou A (2005) Nucl Instrum Methods Phys Res 230:571CrossRefGoogle Scholar
  10. 10.
    Le Pege Y, Donnay G (1976) Acta Crystallogr B 32:2456CrossRefGoogle Scholar
  11. 11.
    Jones PG, Rumpel H, Schwarzmann E, Sheldick GM (1979) Acta Crystallogr B 35:1435CrossRefGoogle Scholar
  12. 12.
    Konnert JH, Applman DE (1978) Acta Crystallogr 34:391CrossRefGoogle Scholar
  13. 13.
    Shimizu H, Sato T (2006) Surf Interface Anal 38:506CrossRefGoogle Scholar
  14. 14.
    Postava K, Aoyama M, Mistrik J, Yamaguchi T, Shio K (2007) Appl Surf Sci 254:416CrossRefGoogle Scholar
  15. 15.
    Ozaki H, Iwamoto S, Inoue M (2007) Catal Lett 113:95CrossRefGoogle Scholar
  16. 16.
    Watts RJ, Udell MD, Rauch PA, Leung SW (1990) Waste Hazard Mater 7:335CrossRefGoogle Scholar
  17. 17.
    Tyre BW (1991) Environ Qual 20:832CrossRefGoogle Scholar
  18. 18.
    Arends WCE, Sheldon RA (2001) Appl Catal A 212:175CrossRefGoogle Scholar
  19. 19.
    Menini L, Silva MJ, Lelis MFF, Fabris JD, Lago RM, Gusevskaya EV (2004) Appl Catal A 269:117CrossRefGoogle Scholar
  20. 20.
    Oliveira LCA, Ramalho TC, Goncalves M (2007) Chem Phys Lett 446:133CrossRefGoogle Scholar
  21. 21.
    Ramalho TC, Oliveira LCA, De Souza EF, da Cunha EFF (2008) J Mater Sci 43:5982. doi: CrossRefGoogle Scholar
  22. 22.
    Oliveira LCA, Ramalho TC, Souza FC, Goncalves M, Oliveira DQL, Pereira MC, Fabris JD (2008) Appl Catal B: Environ 83:169CrossRefGoogle Scholar
  23. 23.
    Martins TLC, Ramalho TC, Figueroa-Villar JD (2003) Magn Reson Chem 12:983CrossRefGoogle Scholar
  24. 24.
    Ramalho TC, Figueroa-Villar JD (2002) J Mol Struct 580:217 THEOCHEMCrossRefGoogle Scholar
  25. 25.
    Souza TCS, Josa D, Ramalho TC, da Cunha EFF (2008) Mol Simul 34:707CrossRefGoogle Scholar
  26. 26.
    Toledo EJL, Ramalho TC, Magriotis ZM (2008) J Mol Struct 888:409CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2009

Authors and Affiliations

  • Teodorico C. Ramalho
    • 1
    Email author
  • Hudson W. P. Carvalho
    • 2
  • Ana P. L. Batista
    • 3
  • Carlos A. Pérez
    • 4
  • Angelo L. Gobbi
    • 4
  1. 1.Department of ChemistryFederal University of LavrasLavrasBrazil
  2. 2.Department of Physical ChemistryState University of São PauloAraraquaraBrazil
  3. 3.Department of ChemistryUniversity of São PauloSão PauloBrazil
  4. 4.Brazilian Synchrotron Light LaboratoryCampinasBrazil

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