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Photocatalytic properties of composites containing titania nanoparticles on submicron Y2O3 spheres

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Abstract

The photocatalytic properties of TiO2/Y2O3 composites prepared by coating with anatase and η-TiO2 nanoparticles, Degussa P25, and Hombifine N by simultaneous dispersing Y2O3 and TiO2 powders in a weakly alkaline aqueous medium (procedure I) or Y2O3 powder in an acidic titanium-containing hydrosol (procedure II) have been studied for the first time. The results demonstrate that, after sonication, the η-TiO2/Y2O3 and anatase/Y2O3 composites have almost identical photocatalytic activities (PCAs), which are however lower than those of anatase and η-TiO2, whereas the PCA of the samples prepared by procedure II is comparable to that of nano-TiO2 under UV irradiation and exceeds the activity of Degussa-N,S (Degussa P25 annealed with thiourea) exposed to visible light. The highest PCA is offered by a TiO2〈Cl〉/Y2O3 composite modified with the products of titanium tetrachloride hydrolysis in air.

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Authors and Affiliations

  1. Lomonosov State University of Fine Chemical Technology, pr. Vernadskogo 86, Moscow, 119571, Russia

    L. N. Obolenskaya, E. V. Savinkina & G. M. Kuz’micheva

  2. Institute of Single Crystals, National Academy of Sciences of Ukraine, pr. Lenina 60, Kharkiv, 61001, Ukraine

    N. A. Dulina

Authors
  1. L. N. Obolenskaya
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  2. N. A. Dulina
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  3. E. V. Savinkina
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  4. G. M. Kuz’micheva
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Corresponding author

Correspondence to G. M. Kuz’micheva.

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Original Russian Text © L.N. Obolenskaya, N.A. Dulina, E.V. Savinkina, G.M. Kuz’micheva, 2013, published in Neorganicheskie Materialy, 2013, Vol. 49, No. 6, pp. 609–614.

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Obolenskaya, L.N., Dulina, N.A., Savinkina, E.V. et al. Photocatalytic properties of composites containing titania nanoparticles on submicron Y2O3 spheres. Inorg Mater 49, 572–576 (2013). https://doi.org/10.1134/S0020168513060071

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  • DOI: https://doi.org/10.1134/S0020168513060071

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