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The character of the response of ZnO and SnO2 sensors modified with porphyrins to volatile organic compounds

  • Physical Chemistry of Surface Phenomena
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Abstract

The influence of the modification of the surface of ZnO and SnO2 sensors with 5,10,15,20-tetraphenylporphyrin on the parameters of sensor response to high-volatility organic substances was analyzed. The organic substances used were ethanol, acetone, and benzene. The sensor response was characterized by specific sensitivity γ determined as the ratio between a change in the resistance of the sensitive sensor layer and the volume concentration of high-volatility organic compounds introduced into the system. The modification of the sensors with tetraphenylporphyrin caused changes in sensor response, including a change in the sign of the γ parameter, which was of importance for creating “electronic nose” sensor systems.

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Authors and Affiliations

  1. Semenov Institute of Chemical Physics, Russian Academy of Sciences, ul. Kosygina 4, Moscow, 117977, Russia

    G. V. Belkova, N. N. Glagolev & A. B. Solov’eva

  2. Karpov Research Institute of Physical Chemistry, ul. Vorontsovo pole 10, Moscow, 105064, Russia

    S. A. Zav’yalov & S. F. Timashev

  3. Moscow Power Institute (Technical University), ul. Krasnokazarmennaya 17, Moscow, 111250, Russia

    O. B. Sarach & A. M. Gulyaev

Authors
  1. G. V. Belkova
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  2. S. A. Zav’yalov
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  3. O. B. Sarach
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  4. A. M. Gulyaev
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  5. N. N. Glagolev
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  6. A. B. Solov’eva
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  7. S. F. Timashev
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Correspondence to G. V. Belkova.

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Belkova, G.V., Zav’yalov, S.A., Sarach, O.B. et al. The character of the response of ZnO and SnO2 sensors modified with porphyrins to volatile organic compounds. Russ. J. Phys. Chem. 82, 2323–2328 (2008). https://doi.org/10.1134/S0036024408130281

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  • DOI: https://doi.org/10.1134/S0036024408130281

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