• Role of acidity on the electrochemistry of Prussian Blue at plain and Nation filmcoated electrodes

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    • Keywords


      Prussian Blue; Nafion film; modified electrodes

    • Abstract


      Prussian Blue (PB) coated on plain platinum (Pt) shows a redox wave at 0.44V vs SCE in addition to the two usual redox waves at 0.82 and 0.12 V vs SCE when the electrodes were dipped in acidic KC1 solution. PB incorporated into Nation film-coated on Pt electrode exhibited the same behaviour even in the presence of neutral KG solution. In acidic KC1, the additional redox wave observed for PB incorporated into Nation film shifted positively to 0.39V vs SCE and the peak separation was reduced to 30mV. The observed additional redox wave for PB coated on plain Pt electrode and incorporated into Nafion film-coated Pt electrodes was assigned to the partial reduction of PB occurring due to the insertion of protons into the film. The effect of various cations on the electrochemistry of PB incorporated into Nafion film-coated electrode was also studied.

    • Author Affiliations


      S Abraham John1 R Ramaraj1

      1. School of Chemistry, Madurai Kamaraj University, Madurai - 625021, India
    • Dates

  • Journal of Chemical Sciences | News

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      Posted on July 25, 2019

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