Journal
MATERIALS LETTERS
Volume 64, Issue 15, Pages 1728-1731Publisher
ELSEVIER
DOI: 10.1016/j.matlet.2010.04.024
Keywords
TiO2 nanoparticles; Combustion reaction; Photocatalysis; Visible light; Doping
Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Foundation of Innovation (CFI)
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N and B co-doped TiO2 nanoparticles were prepared by a facile one-step combustion reaction where Ti (OC4H9)(4) and H3BO3 were used as the precursors and urea served as the fuel and the N source. The formation of TiO2 nanoparticles and the co-doping of N and B into the TiO2 matrix lattices were achieved simultaneously. Our experimental results have shown that the optical absorption edges of the N and B co-doped TiO2 nanoparticles significantly shift toward long wavelength compared to that of non-doped TiO2 photocatalysts. The estimated optical bandgap of the N&B co-doped TiO2 nanoparticles is 2.13 eV. which is much smaller than that of pure anatase TiO2 (3.18 eV). We further studied the photocatalytic activity of the synthesized N&B co-doped TiO2 nanoparticles through the decomposition of acetic acid, showing that the N&B co-doped TiO2 exhibits superb photocatalytic activity and visible light response compared to one of the best commercially available TiO2 photocatalysts, P25. (C) 2010 Elsevier B.V. All rights reserved.
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