Nitrogen Doping to Metatitanic Acid by NH3 Heat Treatment for Achieving Visible-Light-Responsive Photocatalytic Activity

Se Keun Park; Jun Ho Eun; Hyun Ho Shin

doi:10.4028/www.scientific.net/MSF.761.35

Paper Titles

Optical and Photovoltaic Properties of CdS/Ag₂S Quantum Dots Co-Sensitized-Solar Cells
p.15

Preparation and Electrical Conductivity of Sr(Zr_1-xAl_x)O_3-x/2 Perovskite Solid Solution (x = 0-0.5)
p.19

The Thermal Expansion Characteristics of Epoxy Resin/Crepe Paper Composites for High-Voltage DC Bushing
p.23

Fabrication and Thermoelectric Properties of Al-Doped (ZnO)₅In₂O₃ by Microwave Heating
p.27

Nitrogen Doping to Metatitanic Acid by NH₃ Heat Treatment for Achieving Visible-Light-Responsive Photocatalytic Activity
p.35

Feasibility of Hydrothermal Nitrogen Doping Process for Enhancing Visible Light Photocatalytic Activity of Metatitanic Acid Powder
p.41

Preparation of Hematite by Drip Thermal Oxidation Using a Fluidized Bed for Conversion to Electromagnetic-Wave-Absorptive Magnetite
p.49

Fabrication and Consolidation of TiN_x by Pulsed Electric Current Sintering
p.55

Fabrication and Characterization of Calcium Silicate Phosphors - Ca₂SiO₄ and Ca₂MgSi₂O₇ -
p.59

HomeMaterials Science ForumMaterials Science Forum Vol. 761Nitrogen Doping to Metatitanic Acid by NH3 Heat...

Nitrogen Doping to Metatitanic Acid by NH₃ Heat Treatment for Achieving Visible-Light-Responsive Photocatalytic Activity

Abstract:

Nitrogen doping can be achieved by heating TiO₂-based photocatalyst powders under dopant-generating atmospheres such as NH₃. In the present work, metatitanic acid (MTA) powder was used as a raw material to obtain nitrogen-doped titania using heat treatment in NH₃ flow. MTA is an industrially available intermediate product in sulfate process for TiO₂ production, which is mesoporous material with high specific surface area. The MTA powder was heat-treated in flowing NH₃ at 400–550°C. For comparison, commercial P25 TiO₂ powder was heat-treated under the same conditions. The results show that nitrogen dopant can be successfully incorporated into the MTA by heating in NH3 atmosphere. This obviously results in the enhanced visible-light photocatalytic activity, especially in MTA sample heated at 400°C. Due to the fascinating properties of MTA powder such as high specific surface area, the N-doping effect on MTA powder is much higher than the P25 TiO₂ powder.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 761)

Pages:

35-39

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.761.35

Citation:

Cite this paper

Online since:

July 2013

Authors:

Se Keun Park, Jun Ho Eun, Hyun Ho Shin

Keywords:

Ammonioa Gas, Metatitanic Acid, Nitrogen Doping, Photodegradation, TiO₂, Visible Light

Export:

RIS, BibTeX

Price:

Permissions CCC:

Request Permissions

Permissions PLS:

Request Permissions

Сopyright:

Citation:

References

[1] A. Fujishima, K. Honda, Electrochemical photolysis of water at a semiconductor electrode, Nature 238 (1972) 37–38.

DOI: 10.1038/238037a0

Google Scholar

[2] T. Ibusuki, K. Takeuchi, Removal of low concentration nitrogen oxides through photoassisted heterogeneous catalysis, J. Mol. Catal. 88 (1994) 93–102.

DOI: 10.1016/0304-5102(93)e0247-e

Google Scholar

[3] M. R. Hoffmann, S.T. Martin, W.Y. Choi, D.W. Bahnemann, Environmental applications of semiconductor photocatalysis, Chem. Rev. 95 (1995) 69–96.

DOI: 10.1021/cr00033a004

Google Scholar

[4] A. Fujishima, N.R. Tata, A.T. Donald, Titanium dioxide photocatalysis, J. Photochem. Photobiol. C: Photochem. Rev. 1 (2000) 1–21.

Google Scholar

[5] R. Asahi, T. Morikawa, T. Ohwaki, K. Aoki, Y., Taga, Visible-light photocatalysis in nitrogen-doped titanium dioxide, Science 293 (2001) 269–271.

DOI: 10.1126/science.1061051

Google Scholar

[6] A., Fujishima, X. Zhang, D.A. Tryk, TiO2 photocatalysis and related surface phenomena, Surf. Sci. Rep. 63 (2008) 515–582.

DOI: 10.1016/j.surfrep.2008.10.001

Google Scholar

[7] A.V., Emeline, V.N., Kuznetsov, V.K., Rybchuk, N. Serpone, Visible-light-active titania photocatalysts: The case of N-doped TiO2s-properties and some fundamental issues, Int. J. Photoenergy 2008 (2008) 258394.

DOI: 10.1155/2008/258394

Google Scholar

[8] M. Pelaez, N.T. Nolan, S.C. Pillai, M.K. Seery, P. Falaras, A.G. Kontos, P.S.M. Dunlop, J.W.J. Hamilton, J. Byrne, K. O'Shea, M.H. Entezari, D.D. Dionysiou, A review on the visible light active titanium dioxide photocatalysts for environmental applications. Appl. Catal. B: Environ. 125 (2012) 331–349.

DOI: 10.1016/j.apcatb.2012.05.036

Google Scholar

[9] C. Di Valentin, G. Pacchioni, A. Selloni, S. Livraghi, E. Giamello, Characterization of paramagnetic species in N-doped TiO2 powders by EPR spectroscopy and DFT calculations, J. Phys. Chem. B 109 (2005), 11414–11419.

DOI: 10.1021/jp051756t

Google Scholar

[10] J. Wang, D.N. Tafen, J.P. Lewis, Z. Hong, A. Manivannan, M. Zhi, M. Li, N. Wu, Origin of photocatalytic activity of nitrogen-doped TiO2 nanobelts, J. Am. Chem. Soc. 131 (2009) 12290–12297.

DOI: 10.1021/ja903781h

Google Scholar