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Photocatalytic Reduction of CO2 on Mesoporous TiO2 Modified with Ag/Cu Bimetallic Nanostructures

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Theoretical and Experimental Chemistry Aims and scope

A study was carried out on the photocatalytic behavior of mesoporous TiO2 modified with Ag/Cu bimetallic nanostructures in the gas-phase reduction of carbon dioxide. The TiO2/Ag/Cu nanoheterostructure was found to have much higher activity than TiO2/Ag and TiO2/Cu nanocomposites. The highest rate of the photocatalytic reduction of carbon dioxide to give methane is found for the optimal 1 : 6 Ag/Cu mole ratio. The activity of the nanoheterostructures was found to depend on the sequence of deposition of the metals onto the TiO2 surface. The greatest rate of methane accumulation was found in the case of deposition of Ag0 particles with subsequent deposition of copper onto this layer.

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Authors and Affiliations

  1. L. V. Pisarzhevskii Institute of Physical Chemistry, National Academy of Sciences of Ukraine, Prospekt Nauky, 31, Kyiv, 03028, Ukraine

    M. L. Ovcharov, V. V. Shvalagin & V. M. Granchak

Authors
  1. M. L. Ovcharov
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  2. V. V. Shvalagin
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  3. V. M. Granchak
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Correspondence to M. L. Ovcharov.

Additional information

Translated from Teoreticheskaya i Éksperimental’naya Khimiya, Vol. 50, No. 3, pp. 173-178, May-June, 2014.

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Ovcharov, M.L., Shvalagin, V.V. & Granchak, V.M. Photocatalytic Reduction of CO2 on Mesoporous TiO2 Modified with Ag/Cu Bimetallic Nanostructures. Theor Exp Chem 50, 175–180 (2014). https://doi.org/10.1007/s11237-014-9362-x

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  • DOI: https://doi.org/10.1007/s11237-014-9362-x

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