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Nitrogen-Concentration Dependence on Photocatalytic Activity of TiO2-xNx Powders
Abstract
The oxidation power of the TiO 2 - x N x powders with low nitrogen concentrations (<0.02) was evaluated by the decomposition of gaseous 2-propanol (IPA) under the same absorbed photon number, 1.4 × 10 14 quanta·cm -2 ·s -1, of visible (Vis) or ultraviolet (UV) light. Regardless of the x value, the quantum yield values from irradiating with Vis light was lower than with UV light, which suggests that the isolated narrow band formed above the valence band is responsible for the Vis light response in the present nitrogen doped TiO 2 . In addition, increasing the nitrogen concentration when irradiating with UV light lowered the quantum yields, indicating that the doping sites could also serve as recombination sites.
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Citations
Cites
Photocatalysis on TiO2 Surfaces: Principles, Mechanisms, and Selected Results
Linsebigler, A. L., Lu, G., & Yates, J. T. (1995) · Chemical Reviews · doi:10.1021/cr00035a013 · Cited by 11,575
Cited by
TiO2 photocatalysis and related surface phenomena
FUJISHIMA, A., ZHANG, X., & TRYK, D. (2008) · Surface Science Reports · doi:10.1016/j.surfrep.2008.10.001 · Cited by 6,737
Recent developments in photocatalytic water treatment technology: A review
Chong, M. N., Jin, B., Chow, C. W. K., & Saint, C. (2010) · Water Research · doi:10.1016/j.watres.2010.02.039 · Cited by 5,386
Recent developments of zinc oxide based photocatalyst in water treatment technology: A review
Lee, K. M., Lai, C. W., Ngai, K. S., & Juan, J. C. (2016) · Water Research · doi:10.1016/j.watres.2015.09.045 · Cited by 2,341
Ajmal, A., Majeed, I., Malik, R. N., Idriss, H., & Nadeem, M. A. (2014) · RSC Adv. · doi:10.1039/c4ra06658h · Cited by 1,485
Visible light induced photocatalytic degradation of organic pollutants
Chatterjee, D., & Dasgupta, S. (2005) · Journal of Photochemistry and Photobiology C: Photochemistry Reviews · doi:10.1016/j.jphotochemrev.2005.09.001 · Cited by 1,258
Metadata
- Authors
- Irie, H., Watanabe, Y., & Hashimoto, K.
- Venue
- The Journal of Physical Chemistry B
- Publisher
- American Chemical Society (ACS)
- Published
- 2003-05-17
- Volume
- 107
- Issue
- 23
- Pages
- 5483-5486
- ISSN
- 1520-5207 (ISSN-L)
- 1520-6106
- OpenAlex
- W2088952940
- Cited by
- 2,005
- References
- 1
- FWCI
- 46.68
- Type
- journal article
- Language
- en
- Open access
- closed
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