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Photocatalytic activity of titania nanopowders prepared by a sol-gel process at various pHs

  • Synthesis and Properties of Inorganic Compounds
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Abstract

A strategy has been proposed to prepare photocatalytically active titania nanopowders through a sol-gel route using high-degree molecular separation upon the dilution of reagents, high water/alkoxide ratios, high reagent mixing rates, and pH effects. This strategy has been successfully used to isolate, from sols, anatase powders with high surface areas (100–310 m2/g) dependent on the pH value during the synthesis. The photocatalytic activity of titania nanopowders prepared by the sol-gel process at various pHs has been tested in photodestruction of organic dyes (Rodamine B, Methylene Blue, and Anthraquinone AcidBlue) in acid solutions. UV-radiation-induced dye destruction rates are found to depend on the surface properties (including surface area and ζ potential) and hydration specifics of the titania.

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Authors and Affiliations

  1. Institute of Solution Chemistry, Russian Academy of Sciences, ul. Akademicheskaya 1, Ivanovo, 153045, Russia

    A. V. Agafonov, A. A. Redozubov & A. S. Kraev

  2. National Research Tomsk University, pr. Lenina 36, Tomsk, 634050, Russia

    A. V. Agafonov & V. V. Kozik

Authors
  1. A. V. Agafonov
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  2. A. A. Redozubov
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  3. V. V. Kozik
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  4. A. S. Kraev
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Correspondence to A. V. Agafonov.

Additional information

Original Russian Text © A.V. Agafonov, A.A. Redozubov, V.V. Kozik, A.S. Kraev, 2015, published in Zhurnal Neorganicheskoi Khimii, 2015, Vol. 60, No. 8, pp. 1001–1008.

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Agafonov, A.V., Redozubov, A.A., Kozik, V.V. et al. Photocatalytic activity of titania nanopowders prepared by a sol-gel process at various pHs. Russ. J. Inorg. Chem. 60, 906–912 (2015). https://doi.org/10.1134/S0036023615080021

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  • DOI: https://doi.org/10.1134/S0036023615080021

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