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Photocatalytic Degradation of Pharmaceutical Pollutants Under UV and Visible Light Using Ironcontaining Metal-Ceramic Composites

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Russian Physics Journal Aims and scope

The adsorption and photocatalytic activity of iron-containing metal-ceramic composites produced by the selfpropagating combustion of aluminum ferrosilicon in nitrogen with the addition of metallic tantalum (0, 5, 10, 15 wt.%) during oxidative degradation of pharmaceutical pollutants (chloramphenicol, metamizole, cinnarizine) under UV and visible light was evaluated. The phase composition of the composite materials was determined by X-ray diffraction and infrared spectroscopy. The morphological features and optical properties of the composites were investigated, and the band gaps of the semiconductors included in the ceramic matrix were determined. The acid properties of the surface of the composites were studied using pH-metry and the Hammett indicator. The correlation of the number of surface-active sites and adsorption of pollutants with the corresponding value of pКa was shown, and the mechanisms of adsorption were proposed. Optimal conditions for the oxidative degradation of chloramphenicol (~100%) under visible light were found: a composite (5% Ta) with the addition of H2O2 to combine heterogeneous catalysis with the homogeneous photo-Fenton system.

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Authors and Affiliations

  1. National Research Tomsk State University, Tomsk, Russia

    L. N. Skvortsova, K. I. Kazantseva, I. A. Tikhonova & K. A. Dychko

  2. Tomsk Scientific Center, Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    K. A. Bolgaru & A. A. Reger

Authors
  1. L. N. Skvortsova
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  2. K. A. Bolgaru
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  3. K. I. Kazantseva
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  4. I. A. Tikhonova
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  5. A. A. Reger
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  6. K. A. Dychko
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Corresponding author

Correspondence to L. N. Skvortsova.

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Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 11, pp. 145–154, November 2022

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Skvortsova, L.N., Bolgaru, K.A., Kazantseva, K.I. et al. Photocatalytic Degradation of Pharmaceutical Pollutants Under UV and Visible Light Using Ironcontaining Metal-Ceramic Composites. Russ Phys J 65, 1947–1957 (2023). https://doi.org/10.1007/s11182-023-02855-x

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  • DOI: https://doi.org/10.1007/s11182-023-02855-x

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