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Fabrication and Application of a Sensitive and Highly Stable Copper Hexacyanoferrate Modified Carbon Ionic Liquid Paste Electrode for Hydrogen Peroxide and Glucose Detection

Authors

  • Behzad Haghighi,

    Corresponding author
    1. Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P. O. Box 45195-1159, Gava Zang, Zanjan, Iran
    • Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P. O. Box 45195-1159, Gava Zang, Zanjan, Iran
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  • Leila Nazari,

    1. Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P. O. Box 45195-1159, Gava Zang, Zanjan, Iran
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  • S. Maryam Sajjadi

    1. Department of Chemistry, Institute for Advanced Studies in Basic Sciences, P. O. Box 45195-1159, Gava Zang, Zanjan, Iran
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Abstract

A three-factor mixture design and response surface methodology were employed to find the optimal weight ratio of graphite powder, n-dodecylpyridinium hexafluorophosphate and paraffin for the fabrication of a copper hexacyanoferrate modified carbon ionic liquid paste electrode (CuHCFe-CILPE). The fabricated sensor showed electrocatalytic activity towards oxidation and reduction of hydrogen peroxide. It also was observed that the electrocatalytic activity for hydrogen peroxide oxidation was much higher than the electrocatalytic activity for hydrogen peroxide reduction. Glucose oxidase was then successfully immobilized on the surface of the proposed sensor to examine the possibility of using CuHCFe-CILPE for the biosensor fabrication.

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