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Journal of Materials Science

, Volume 41, Issue 18, pp 6168–6170 | Cite as

Acid-mediated sol–gel synthesis of visible-light active photocatalysts

  • C. X. Dong
  • A. P. Xian
  • E. H. Han
  • J. K. Shang
Letter

Photocatalysis by visible light has received a great deal of attention ever since titanium oxide was first discovered to exhibit photocatalytic activity under ultraviolet radiation in 1970s [1, 2]. To equip titanium oxide with visible light activity, cationic doping by transition metal elements has been extensively investigated [3, 4, 5, 6, 7]. The problems with the photocatalysts so prepared are their low conversion efficiency of photo-generated carriers and poor thermal instability [8, 9]. After Asahi et al. [10] found N-doped TiO2 synthesized by sputtering methods showed remarkable visible-light absorption, other methods in doping nitrogen and other anions into TiO2 have also been reported subsequently [11, 12, 13, 14, 15, 16, 17, 18]. For example, Umebayashi [15] et al. succeeded in synthesizing S anion doped TiO2 by oxidation annealing of titanium disulfide. Khan et al. [16] prepared C-doped TiO2by controlled combustion of titanium metal in a natural gas flame. Sivalingam et al....

Keywords

TiO2 Methylene Blue Photocatalytic Activity TiO2 Lattice Undoped TiO2 

Notes

Acknowledgement

Support for this study was provided by the Chinese Natural Science Foundation through the grant No. 50342001 and by the STC program of the US National Science Foundation under Agreement No. CTS-0120978.

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Copyright information

© Springer Science+Business Media, LLC 2006

Authors and Affiliations

  • C. X. Dong
    • 1
  • A. P. Xian
    • 1
  • E. H. Han
    • 1
  • J. K. Shang
    • 1
    • 2
  1. 1.Shenyang National Laboratory for Materials Science, Institute of Metal ResearchChinese Academy of SciencesShenyangChina
  2. 2.Department of Materials Science and Engineering University of Illinois at Urbana-ChampaignUrbanaUSA

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