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Gas permeability of graphite foil modified with iron, cobalt, and nickel oxides

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Abstract

Graphite foils containing iron(III), cobalt(II), and nickel(II) oxides have been prepared via the impregnation of oxidized graphite in aqueous FeCl3, Co(NO3)2, and Ni(NO3)2 solutions, followed by exfoliation via thermal shock and pressing of the resultant exfoliated graphite. The materials thus prepared have been characterized by X-ray diffraction, scanning electron microscopy, and energy dispersive X-ray spectroscopy. We have studied the gas transport properties of the modified graphite foil samples and observed a considerable increase in the nitrogen and hydrogen permeabilities of the metal oxide-modified graphite foils relative to the unmodified graphite foil. The thermal properties of the samples have been studied by thermogravimetry and differential scanning calorimetry. The results demonstrate that their oxidation onset temperature reaches 570°C.

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Authors and Affiliations

  1. Faculty of Chemistry, Moscow State University, Moscow, 119991, Russia

    A. V. Ivanov, N. V. Maksimova, A. P. Malakho & V. V. Avdeev

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  1. A. V. Ivanov
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  2. N. V. Maksimova
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  3. A. P. Malakho
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  4. V. V. Avdeev
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Correspondence to A. V. Ivanov.

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Original Russian Text © A.V. Ivanov, N.V. Maksimova, A.P. Malakho, V.V. Avdeev, 2017, published in Neorganicheskie Materialy, 2017, Vol. 53, No. 6, pp. 578–585.

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Ivanov, A.V., Maksimova, N.V., Malakho, A.P. et al. Gas permeability of graphite foil modified with iron, cobalt, and nickel oxides. Inorg Mater 53, 568–575 (2017). https://doi.org/10.1134/S0020168517060061

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  • DOI: https://doi.org/10.1134/S0020168517060061

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