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2010 | 12 | 3 | 33-35

Article title

Comparison of NaNbO3 and NaTaO3 as the photocatalysts in the reaction of hydrogen generation


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The photocatalytic production of hydrogen over several chemical compounds based on sodium niobates and tantalates has been investigated. The photocatalysts have been prepared by an impregnation method of Nb2O5 and Ta2O5 in the aqueous solution of sodium hydroxide and then the calcination at the temperature range of 450 - 800°C. In this report, we present the study showing that of the catalysts explored, the highest photocatalytic activity was shown in a sample obtained at the temperature of 450°C and containing NaTaO3 as a main phase.









Physical description


1 - 1 - 2010
27 - 9 - 2010


  • Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland
  • Institute of Chemical and Environment Engineering, West Pomeranian University of Technology, ul. Pułaskiego 10, 70-322 Szczecin, Poland


  • Ni, M., Leung, M. K. H., Leung, D. Y. C. & Sumathy, K. (2007). A review and recent developments in photocatalytic water-splitting using TiO2 for hydrogen production. Ren. Sust. Energy Rev. 11, 401-425. DOI:10.1016/j.rser.2005.01.009.[Crossref][WoS]
  • Zheng, X.-J., Wei, L.-F., Zhang, Z.-H., Jiang, Q.-J., Wei, Y.-J., Xie, B. & Wei, M.-B. (2009). Research on photocatalytic H2 production from acetic acid solution by Pt/TiO2 nanoparticles under UV irradiation. Int. J. Hydrogen Energy. 34, 9033-9041. DOI:10.1016/j.ijhydene.2009.09.019.[Crossref][WoS]
  • Jeong, H., Kim, T., Kim, D. & Kim K. (2006). Hydrogen production by the photocatalytic overall water splitting on NiO/Sr3Ti2O7: Effect of preparation method. Int. J. Hydrogen Energy. 31, 1142-1146. DOI:10.1016/j.ijhydene.2005.10.005.[Crossref]
  • Shanker, V., Samal, S. L., Pradhan, G. K., Narayana, Ch. & Ganguli, A. K. (2009). Nanocrystalline NaNbO3 and NaTaO3: Rietveld studies, Raman spectroscopy and dielectric properties. Solid State Sci. 11, 562-569. DOI: 10.1016/j.solidstatesciences.2008.08.001.[Crossref]
  • Kato, H., Asakura, K. & Kudo, A. (2003). Highly Efficient Water Splitting into H2 and O2 over Lanthanum-Doped NaTaO3 Photocatalysts with High Crystallinity and Surface Nanostructure. J. Am. Chem. Soc. 125, 3082-3089.
  • Zielińska, B. & Morawski, A. W. (2005) TiO2 photocatalysts promoted by alkali metals. Appl. Catal, B: 55, 221-226. DOI:10.1016/j.apcatb.2004.08.015.[Crossref]
  • Liu, J. W., Chen, G., Li, Z. H. & Ahang, Z. G. (2007). Hydrothermal synthesis and photocatalytic properties of ATaO3 and ANbO3 (A=Na and K). Int. J. Hydrogen Energy. 32, 2269-2272. DOI:10.1016/j.ijhydene.2006.10.005.[Crossref]
  • Hsiao, Y.-J., Chang, Y.-H., Chang, Y.-S. Fang, T.-H., Chai, Y.-L., Chen, G.-J. & Huang, T.-H. (2007). Growth and characterization of NaNbO3 synthesized using reaction-sintering method. Mater. Sci. Eng. 136, 129-133. DOI:10.1016/j.mseb.2006.09.013.[Crossref]
  • Zhu, H., Zheng, Z., Gao, X., Huang, Y., Yan, Z., Zou, J., Yin, H., Zou, Q., Kable, S. H., Zhao, J., Xi, Y., Martens, W. & Frost R. L. (2006). Structural Evolution in a Hydrothermal Reaction between Nb2O5 and NaOH Solution: From Nb2O5 Grains to Microporous Na2Nb2O62/3H2O Fibers and NaNbO3 Cubes. J. Am. Chem. Soc. 128, 2373-2384.
  • Porob, D. G. & Maggard, P. A. (2006). Flux syntheses of La-doped NaTaO3 and its photocatalytic activity. J. Solid State Chem. 179, 1727-1732. DOI:10.1016/j.jssc.2006.03.008.[Crossref]
  • Kato, H. & Kudo, A. (1998). New tantalate photocatalysts for water decomposition into H2 and O2. Chem. Phys. Lett. 295, 487-492.

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