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Nanostructured Microspheres Based on Titanium Nano-Oxide with the Function of Accumulation of a Charge for Prolonged Catalysis

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Abstract

Nanoheterostructures based on titanium, vanadium, molybdenum, and tungsten oxides assembled in the form of microspheres have been synthesized. Their structural and photoelectronic properties have been studied. It has been shown that the photocatalysis rate increases significantly for microspheres consisting several metal oxides. A relation of the photocatalysis rate to the number of V4+ paramagnetic centers and the time of their relaxation after the end of illumination has been revealed. It has been found that the spatial separation of photoexcited charge carriers between different nano-oxides in heterostructures leads to the accumulation of charge in them and to prolonged catalysis. Consequently, they are promising for application as the main material of photocatalytic filters for cleaning the environment.

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Funding

This work was supported by the Russian Foundation for Basic Research (project no. 18-29-23051). G.V. Trusov acknowledges the support of the Ministry of Science and Higher Education of the Russian Federation (project no. K2-2019-007, competitiveness program for National University of Science and Technology MISiS, Government Resolution no. 211 on March 16, 2013).

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Authors and Affiliations

  1. Moscow State University, Moscow, 119991, Russia

    E. A. Konstantinova & E. V. Kytina

  2. National Research Center Kurchatov Institute, Moscow, 123182, Russia

    E. A. Konstantinova & A. A. Minnekhanov

  3. Moscow Institute of Physics and Technology, National Research University, Dolgoprudnyi, Moscow region, 141701, Russia

    E. A. Konstantinova

  4. National University of Science and Technology MISiS, Moscow, 119049, Russia

    G. V. Trusov

Authors
  1. E. A. Konstantinova
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  2. A. A. Minnekhanov
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  3. E. V. Kytina
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  4. G. V. Trusov
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Corresponding author

Correspondence to A. A. Minnekhanov.

Additional information

Russian Text © The Author(s), 2020, published in Pis’ma v Zhurnal Eksperimental’noi i Teoreticheskoi Fiziki, 2020, Vol. 112, No. 8, pp. 562–567.

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Konstantinova, E.A., Minnekhanov, A.A., Kytina, E.V. et al. Nanostructured Microspheres Based on Titanium Nano-Oxide with the Function of Accumulation of a Charge for Prolonged Catalysis. Jetp Lett. 112, 527–531 (2020). https://doi.org/10.1134/S0021364020200060

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  • DOI: https://doi.org/10.1134/S0021364020200060

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