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Nanostructured Titanium Oxynitride Porous Thin Films as Efficient Visible‐Active Photocatalysts
Abstract
Nanocrystalline mesoporous N‐doped titania films have been prepared for the first time. The introduction of nitrogen into the anatase structure starts at 500 °C, with N bonding to titanium via oxygen substitution. Increasing the treatment temperature leads to the formation of TiN (TiN 1–xOx) and N‐doped rutile showing mixed‐valence Ti states. Microstructural characterization shows that the ordered mesoporosity is maintained until 700 °C, where TiN (TiN 1–xOx) begins to form. Optical characterization shows that the discrete introduction of N is able to shift the titania absorption edge. The photocatalytic tests give the best results under visible light excitation for the film nitrided at 500 °C. At this temperature the concentration of nitrogen in the structure is optimal since oxygen vacancies are still not important enough to promote the recombination of the photogenerated electrons and holes.
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Cites
Surface Science Studies of the Photoactivation of TiO 2 New Photochemical Processes
Thompson, T. L., & Yates, J. T. (2006) · Chemical Reviews · doi:10.1021/cr050172k · Cited by 2,064
Shimura, H., Schlossmacher, M. G., Hattori, N., Frosch, M. P., Trockenbacher, A., Schneider, R., Mizuno, Y., Kosik, K. S., & Selkoe, D. J. (2001) · Science · doi:10.1126/science.1060627 · Cited by 1,053
Cited by
A review on the visible light active titanium dioxide photocatalysts for environmental applications
Pelaez, M., Nolan, N. T., Pillai, S. C., Seery, M. K., Falaras, P., Kontos, A. G., Dunlop, P. S. M., Hamilton, J. W. J., Byrne, J. A., O'Shea, K., et al. (2012) · Applied Catalysis B: Environmental · doi:10.1016/j.apcatb.2012.05.036 · Cited by 4,047
A red anatase TiO2 photocatalyst for solar energy conversion
Liu, G., Yin, L.-C., Wang, J., Niu, P., Zhen, C., Xie, Y., & Cheng, H.-M. (2012) · Energy & Environmental Science · doi:10.1039/c2ee22930g · Cited by 409
Liu, G., Wang, L., Sun, C., Yan, X., Wang, X., Chen, Z., Smith, S. C., Cheng, H.-M., & Lu, G. Q. (2009) · Chemistry of Materials · doi:10.1021/cm802986r · Cited by 295
Metadata
- Authors
- Martínez‐Ferrero, E., Sakatani, Y., Boissière, C., Grosso, D., Fuertes, A., Fraxedas, J., & Sanchez, C.
- Venue
- Advanced Functional Materials
- Publisher
- Wiley
- Published
- 2007-10-04
- Volume
- 17
- Issue
- 16
- Pages
- 3348-3354
- ISSN
- 1616-301X (ISSN-L)
- 1616-3028
- OpenAlex
- W2038707917
- Cited by
- 179
- References
- 2
- FWCI
- 10.79
- Type
- journal article
- Language
- en
- Open access
- closed
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- The paper
- Martínez‐Ferrero, E., Sakatani, Y., Boissière, C., Grosso, D., Fuertes, A., Fraxedas, J., & Sanchez, C. (2007). Nanostructured Titanium Oxynitride Porous Thin Films as Efficient Visible‐Active Photocatalysts. Advanced Functional Materials. https://doi.org/10.1002/adfm.200700396
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