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Journal of Materials Science

, Volume 42, Issue 24, pp 9966–9972 | Cite as

An investigation on synthesis and photocatalytic activity of polyaniline sensitized nanocrystalline TiO2 composites

  • Shixiong MinEmail author
  • Fang Wang
  • Yuqi Han
Article

Abstract

Polyaniline (PAn) sensitized nanocrystalline TiO2 composite photocatalyst (PAn/TiO2) with high activity and easy separation was facilely prepared by in situ chemical oxidation of aniline from the surfaces of the TiO2 nanoparticles. The morphology, structure, and light absorption properties of composite photocatalyst were examined in term of its application to photocatalysis. The photocatalytic activity of PAn/TiO2 nanocomposites for the degradation of methylene blue (MB) aqueous solution was investigated and compared with pure TiO2. The spectra analyses illustrated that, when PAn deposited on the surface of TiO2, the crystalline behavior of PAn was hampered and the degree of crystallinity decreased, and the characteristic peaks of the PAn were shifted indicating that there was a strong interaction between PAn and TiO2 nanoparticles. PAn was able to sensitize TiO2 efficiently and the composite photocatalyst could be activated by absorbing both the ultraviolet and visible light (λ = 190–800 nm), whereas pure TiO2 absorbed ultraviolet light only (λ < 400 nm). Photocatalytic experiments showed that under natural light irradiation, MB could be degraded more efficiently on the PAn/TiO2 than on the pure TiO2, due to the charge transfer from PAn to TiO2 and efficient separation of e-h+ pairs on the interface of PAn and TiO2 in the excited state. More significantly, the PAn/TiO2 composite photocatalyst exhibited easy separation and less deactivation after several runs. The advantages of the obtained PAn/TiO2 composite photocatalyst revealed its great practical potential in wastewater treatment.

Keywords

TiO2 Polyaniline Methylene Blue Photocatalytic Activity TiO2 Nanoparticles 

Notes

Acknowledgements

Authors are grateful to Prof. H. G. An, D. Q. Wu, Y. S. Wang for their constant encouragement and stimulating discussion. Y. Q. Han is thanked for his kindly supply the chemical regents. We also thank the financially support from Department of Chemistry and Key laboratory of Resources and Environmental Chemistry of West China, Hexi University.

References

  1. 1.
    Fujishima A, Rao TN, Tryk DA (2000) J Photochem Photobiol C: Rev 1:1CrossRefGoogle Scholar
  2. 2.
    Konstantinou IK, Albanis TA (2004) Appl Catal B: Environ 49:1CrossRefGoogle Scholar
  3. 3.
    Balasubramanian G, Dionysiou DD, Suidan MT, Baudin I, Laîné J-M (2004) Appl Catal B: Environ 47:73CrossRefGoogle Scholar
  4. 4.
    Antoniou MG, Dionysiou DD (2007) Catal Today 124:215CrossRefGoogle Scholar
  5. 5.
    Hoffmann MR, Martin ST, Choi W, Bahnemann D (1995) Chem Rev 95:69CrossRefGoogle Scholar
  6. 6.
    Regan BÒ, Grätzel MA (1991) Nature 353:734CrossRefGoogle Scholar
  7. 7.
    Pereraa VPS, Pitigala PKDDP, Senevirathne MKI, Tennakone K (2005) Solar Energy Mater Solar Cells 85:91Google Scholar
  8. 8.
    Iwasaki M, Hara M, Kawada H, Tada H, Ito S (2000) J Colloid Interf Sci 224:202CrossRefGoogle Scholar
  9. 9.
    Subramanian V, Wolf E, Kamat PV (2001) J Phys Chem B 105:11439CrossRefGoogle Scholar
  10. 10.
    Asahi R, Morikawa T, Ohwaki T, Aoki K, Taga Y (2001) Science 293:269CrossRefGoogle Scholar
  11. 11.
    Pron A, Rannou P (2002) Prog Polym Sci 27:135CrossRefGoogle Scholar
  12. 12.
    Shaheen SE, Brabec CJ, Padinger F, Fromherz T, Hummelen JC, Sariciftci NS (2001) Appl Phys Lett 78:841CrossRefGoogle Scholar
  13. 13.
    Suh DJ, Park OO, Ahn T, Shim H (2002) Opt Mater 21:365Google Scholar
  14. 14.
    Ravirajan P, Haque SA, Poplavskyy D, Durrant JR, Bradley DDC, Nelson J (2004) Thin Solid Films 451–452:624CrossRefGoogle Scholar
  15. 15.
    Kwon J, Kim P, Keum J, Kim JS (2004) Solar Energy Mater Solar Cells 83:311CrossRefGoogle Scholar
  16. 16.
    Hebestreit N, Hofmann J, Rammelt U, Plieth W (2003) Electrochim Acta 48:1779CrossRefGoogle Scholar
  17. 17.
    Andersona NA, Haoa E, Ai X, Hastings G, Lian TQ (2002) Phys E 14:215CrossRefGoogle Scholar
  18. 18.
    van Hal PA, Christiaans MPT, Wienk MM, Kroon JM, Janssen RAJ (1999) J Phys Chem B 103:4352Google Scholar
  19. 19.
    Christiaans MPT, Wienk MM, van Hal PA, Kroon JM, Janssen RAJ (1999) Synth Met 101:265CrossRefGoogle Scholar
  20. 20.
    Luzzati S, Basso M, Catellani M, Brabec CJ, Gebeyehu D, Sariciftci NS (2002) Thin Solid Films 403–404:52CrossRefGoogle Scholar
  21. 21.
    Senadeera GKR, Kitamura T, Wada Y, Yanagida S (2004) J Photochem Photobiol A: Chem 164:61CrossRefGoogle Scholar
  22. 22.
    Yanagida S, Senadeera GKR, Nakamura K, Kitamura T, Wada Y (2004) J Photochem Photobiol A: Chem 166:75CrossRefGoogle Scholar
  23. 23.
    Savenije TJ, Vermeulen WMJ, de Haas MP, Warman JM (2000) Solar Energy Mater Solar Cells 61:9CrossRefGoogle Scholar
  24. 24.
    Tang H, Prasad K, Sanjines R, Schmid PE, Levy F (1994) J Appl Phys 75:2042CrossRefGoogle Scholar
  25. 25.
    Feng W, Sun E, Fujii A, Wu H, Nihara K, Yoshino K (2000) Bull Chem Soc Jpn 73:2627CrossRefGoogle Scholar
  26. 26.
    Xia HS, Wang Q (2002) Chem Mater 14:2158CrossRefGoogle Scholar
  27. 27.
    Zhang LJ, Wan MX (2003) J Phys Chem B 107:6748CrossRefGoogle Scholar
  28. 28.
    Li XW, Wang GC, Li XX, Lu DM (2004) Appl Surf Sci 229:395CrossRefGoogle Scholar
  29. 29.
    Somani PR, Marimuthu R, Mulik UP, Sainkar SR, Amalnerkar DP (1999) Synth Met 106:45CrossRefGoogle Scholar
  30. 30.
    Su SJ, Kuramoto N (2000) Synth Met 114:147CrossRefGoogle Scholar
  31. 31.
    Alan GM, Arthur JE (1995) Synth Met 69:85CrossRefGoogle Scholar
  32. 32.
    Wu Q, Xue Z, Qi Z, Wang F (2000) Polymer 41:2029CrossRefGoogle Scholar
  33. 33.
    Chen SA, Hwang GW (1994) J Am Chem Soc 116:7939CrossRefGoogle Scholar
  34. 34.
    Chen SA, Hwang GW (1996) Macromolecules 29:3950CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2007

Authors and Affiliations

  1. 1.Department of Chemistry, Key Laboratory of Resources and Environmental Chemistry of West China Hexi UniversityZhangyeChina

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