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Specifics of adsorption and chemical processes on the surface of gamma-irradiated vanadium dioxide

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Abstract

The effect of γ-irradiation on the electrophysical properties and processes of thermal desorption of water from the surface of vanadium oxides V2O3-VO2−δ-VO2+δ-V2O5 were studied by the thermal analysis and electric conductivity techniques. It was shown that the amount of adsorbed water on the surface and the phase composition of the surface changed under exposure to low doses. The observed effects for vanadium oxides as semiconductors were correlated with analogous processes for alumina as a dielectric. It was found that the surface conductivity in irradiated VO2−δ samples during the chemical reaction of ethanol with benzoic acid adsorbed after irradiation was substantially higher than that in their unirradiated counterparts. It was assumed that irradiation enhances the metal-semiconductor phase transition on the VO2−δ surface during the chemical reaction.

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Authors and Affiliations

  1. Institute of Surface Chemistry, National Academy of Sciences of Ukraine, ul. Generala Naumova 17, Kiev, 03680, Ukraine

    V. N. Kaurkovskaya, L. S. Dzyubenko, V. N. Doroshenko & A. A. Chuiko

  2. Institute of Physics, National Academy of Sciences of Ukraine, pr. Nauki 46, Kiev, 03028, Ukraine

    A. P. Shakhov

Authors
  1. V. N. Kaurkovskaya
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  2. L. S. Dzyubenko
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  3. A. P. Shakhov
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  4. V. N. Doroshenko
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  5. A. A. Chuiko
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Original Russian Text © V.N. Kaurkovskaya, L.S. Dzyubenko, A.P. Shakhov, V.N. Doroshenko, A.A. Chuiko, 2006, published in Khimiya Vysokikh Energii, 2006, Vol. 40, No. 4, pp. 252–258.

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Kaurkovskaya, V.N., Dzyubenko, L.S., Shakhov, A.P. et al. Specifics of adsorption and chemical processes on the surface of gamma-irradiated vanadium dioxide. High Energy Chem 40, 212–217 (2006). https://doi.org/10.1134/S0018143906040035

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  • DOI: https://doi.org/10.1134/S0018143906040035

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