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Research on Chemical Intermediates

, Volume 39, Issue 4, pp 1509–1515 | Cite as

Nb and N co-doped TiO2 for a high-performance deNO x photocatalyst under visible LED light irradiation

  • Peilin Zhang
  • Shu YinEmail author
  • Tohru Sekino
  • Soo Wohn Lee
  • Tsugio Sato
Article

Abstract

By a facile and rapid microwave-assisted hydrothermal reaction at 190 °C for 30 min, niobium and nitrogen co-doping TiO2 nanoparticles were prepared. The obtained samples were characterized by XRD, UV–Vis spectroscopy, EDX analysis, and BET measurements. To evaluate the photocatalytic activity, destruction of NO x gas under the irradiation of several LED lamps with various wavelengths were carried out. Although co-doping of Nb with N into TiO2 resulted in the decrement of the specific surface area, it was useful to improve the photocatalytic activity for the oxidative destruction of NO, probably due to the effective reduction of the anion vacancy in the lattice which acts as the recombination center of the photo-induced electrons and holes.

Keywords

Photocatalyst deNOx Titania Nitrogen Niobium Co-doping 

Notes

Acknowledgments

This research was supported in part by Grant-in-Aid for JSPS Fellows (20007574), and the Management Expenses Grants for National Universities Corporations from the Ministry of Education, Culture, Sports, Science and Technology of Japan (MEXT), and also supported by the Global Research Laboratory (GRL) Program.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Peilin Zhang
    • 1
  • Shu Yin
    • 1
    Email author
  • Tohru Sekino
    • 1
  • Soo Wohn Lee
    • 2
  • Tsugio Sato
    • 1
  1. 1.Institute of Multidisciplinary Research for Advanced Materials (IMRAM)Tohoku UniversitySendaiJapan
  2. 2.Department of Materials Engineering, College of EngineeringSun Moon UniversityAsanKorea

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