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Journal of Sol-Gel Science and Technology

, Volume 58, Issue 1, pp 312–318 | Cite as

Chemical synthesis of Ni/TiO2 nanophotocatalyst for UV/visible light assisted degradation of organic dye in aqueous solution

  • Dongfang Zhang
Original Paper

Abstract

The Ni/TiO2 nanoparticles with different Ni dopant content were prepared by a modified sol–gel method. The structure and photoinduced charge properties of the as-prepared catalysts were determined using X-ray diffraction, transmission electron microscopy, UV–vis diffuse reflectance spectroscopy and surface photovoltage spectroscopy techniques, and the photocatalytic efficiency of these catalysts was tested using an organic dye. It was shown that Ni modification could greatly enhance the photocatalytic efficiency of these nanocomposite catalysts by taking the photodegradation of methyl orange as a model reaction. With appropriate ratio of Ni and TiO2, Ni/TiO2 nanocomposites showed the superior photocatalytic activity than the single TiO2 nanoparticles. Surface photovoltage spectra demonstrated that Ni modification could effectively inhibit the recombination of the photoinduced electron and holes of TiO2. This electron–hole pair separation conditions are responsible for the higher photocatalytic performance of Ni/TiO2 nanocomposites in the visible region of electromagnetic spectrum.

Keywords

Photocatalyst Modification Dye degradation 

Notes

Acknowledgments

This work was supported by the Fundamental Research Funds for the Central Universities and Huazhong Agricultural University Scientific & Technological Self-innovation Foundation (2009QC016).

References

  1. 1.
    Hoffmann MR, Martin ST, Choi W, Bahnemann DW (1995) Chem Rev 95:69CrossRefGoogle Scholar
  2. 2.
    Schaaff TG, Blom DA (2002) Nano Lett 2:507CrossRefGoogle Scholar
  3. 3.
    Sun B, Vorontsov AV, Smirniotis PG (2003) Langmuir 19:3151CrossRefGoogle Scholar
  4. 4.
    Kim S, Choi W (2002) J Phys Chem B 106:13311CrossRefGoogle Scholar
  5. 5.
    Einaga H, Ibusuki T, Futamura S (2004) Environ Sci Technol 38:285CrossRefGoogle Scholar
  6. 6.
    Wang W, Zhang J, Chen F, Anpo M, He D (2010) Res Chem Intermed 36:163CrossRefGoogle Scholar
  7. 7.
    Hao HY, He CX, Tian BZ, Zhang JL (2009) Res Chem Intermed 35:705CrossRefGoogle Scholar
  8. 8.
    Yuan X, Zhang J, Anpo M, He D (2010) Res Chem Intermed 36:83CrossRefGoogle Scholar
  9. 9.
    Xiong RC, Jia CG, Wei G (2002) J BUCT (Nature Science Edition) 29:34Google Scholar
  10. 10.
    Umebayashi T, Yamaki T, Itoh H, Asai K (2002) J Phys Chem Solids 63:1909CrossRefGoogle Scholar
  11. 11.
    Sharma SD, Singh D, Saini KK, Kant C, Sharma V, Jain SC, Sharma CP (2006) Appl Catal A Gen 314:40CrossRefGoogle Scholar
  12. 12.
    Sanchez E, Lopez T (1995) Mater Lett 25:271CrossRefGoogle Scholar
  13. 13.
    Kronik L, Shapira Y (1999) Surf Sci Rep 37:1CrossRefGoogle Scholar
  14. 14.
    Morikawa T, Irokawa Y, Ohwaki T (2006) Appl Catal A Gen 314:123CrossRefGoogle Scholar
  15. 15.
    Litter MI (1999) Appl Catal B 23:89CrossRefGoogle Scholar
  16. 16.
    Nakamura I, Negishi N, Kutsuna S, Ihara T, Sugihara S, Takeuchi K (2000) J Mol Catal A Chem 161:205CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  1. 1.College of Science, Huazhong Agricultural UniversityHubeiPeople’s Republic of China

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