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<p>The electrochemical behavior of potassium permanganate (KMnO<sub>4</sub>) was investigated using cyclic voltammetry in 0.1 M potassium fluoride solution in the absence and presence of bromocresol green (BCG) and selenium oxide (SeO<sub>2</sub>). The KMnO<sub>4</sub>–SeO<sub>2</sub> system exhibited significantly enhanced anodic and cathodic peak currents compared with pristine KMnO<sub>4</sub> and the KMnO<sub>4</sub>–BCG system, indicating improved electron transfer and increased electrochemical activity. In contrast, the presence of BCG altered the redox characteristics of KMnO<sub>4</sub> but did not significantly enhance charge accumulation behavior. Analysis of scan-rate dependence confirmed that the electrochemical processes are predominantly diffusion-controlled with additional surface-associated contributions. The results demonstrate that selenium oxide effectively promotes charge transfer and electrochemical activity in KMnO<sub>4</sub> systems, providing insight into additive-assisted modulation of redox-mediated electrochemical processes.</p>

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Influence of organic and inorganic additives on the electrochemical behavior of KMnO4 at the electrode interface

  • 期刊论文

  • 发表日期：

    2026年4月9日

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  • Mennah Allah G. El-Zohiray,
  • Esam A. Gomaa,
  • Mohamed M. El-Defrawy,
  • Mahmoud N. Abd El-Hady,
  • Elsayed M. AbouElleef

摘要

The electrochemical behavior of potassium permanganate (KMnO4) was investigated using cyclic voltammetry in 0.1 M potassium fluoride solution in the absence and presence of bromocresol green (BCG) and selenium oxide (SeO2). The KMnO4–SeO2 system exhibited significantly enhanced anodic and cathodic peak currents compared with pristine KMnO4 and the KMnO4–BCG system, indicating improved electron transfer and increased electrochemical activity. In contrast, the presence of BCG altered the redox characteristics of KMnO4 but did not significantly enhance charge accumulation behavior. Analysis of scan-rate dependence confirmed that the electrochemical processes are predominantly diffusion-controlled with additional surface-associated contributions. The results demonstrate that selenium oxide effectively promotes charge transfer and electrochemical activity in KMnO4 systems, providing insight into additive-assisted modulation of redox-mediated electrochemical processes.