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Electrochemistry of a Thin Cobalt(II)-Heptacyanonitrosylferrate Film Modified Glassy Carbon Electrode

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Abstract

The electrochemical behavior of a cobalt(II)-heptacyanonitrosylferrate (CoHNF) film on a glassy carbon electrode has been investigated. Cyclic voltammetry shows a single electron-transfer reaction taking place at 0.51 V for the modified electrode. The ion effect of the supporting electrolyte indicates that the ion permeability in the CoHNF film is mainly determined by the hydrated radius of cation. The modified electrode catalyzes redox reactions of the Fe2+/Fe3+ couple. It also exhibits a linear potentiometric response over the range of 3×10-5 - 1×10-2 M NO2- with a near-Nernstian slope in an acidic medium.

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Authors and Affiliations

  1. Department of Chemistry, National University of Singapore, Kent Ridge Crescent, Singapore, 119260, Republic of Singapore

    Zhiqiang Gao

  2. Laboratory of Electronic Microscope, Luoyang Technological Institute, Luoyang, Henan, People’s Republic of China

    Yimin Zhang

  3. Department of Chemistry, Yulin Normal Collage, Yulin, Shanxi, People’s Republic of China

    Guangqing Wang

Authors
  1. Zhiqiang Gao
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  2. Yimin Zhang
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  3. Guangqing Wang
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Gao, Z., Zhang, Y. & Wang, G. Electrochemistry of a Thin Cobalt(II)-Heptacyanonitrosylferrate Film Modified Glassy Carbon Electrode. ANAL. SCI. 14, 1053–1058 (1998). https://doi.org/10.2116/analsci.14.1053

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  • DOI: https://doi.org/10.2116/analsci.14.1053

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