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<p>In this study, a three-dimensional nickel foam-supported Ni(OH)<sub>2</sub>/NiOOH electrode was synthesized via a simple in situ electrochemical approach in NaOH solution, without the use of any nickel precursors. The resulting Ni(OH)<sub>2</sub>/NiF electrode was thoroughly characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). For the first time, the fabricated Ni(OH)<sub>2</sub>/NiF sensor was employed as a highly efficient non-enzymatic electrochemical platform, enabling the selective detection of glucose, methanol, and ethanol in an alkaline media using cyclic voltammetry (CV) and amperometric techniques. The sensor exhibited wide linear detection ranges of 1.0 µM–10 mM for glucose, 1.0 µM–10 mM for methanol, and 1.0 µM–12 mM for ethanol, with corresponding low detection limits of 0.9, 1.8, and 2.0 µM, respectively. The proposed electrode demonstrated excellent sensitivity, reproducibility, and long-term stability, making it as a promising candidate for the individual determination of glucose, methanol, and ethanol in real samples such as blood serum and adulterated alcoholic beverages.</p>

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In-situ electrochemical formation of nickel oxyhydroxide (NiOOH) onmetallic nickel foam electrode for non-enzymatic glucose, methanol and ethanol detection

  • 期刊论文

  • 发表日期：

    2026年2月18日

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  • Rafiaa Kihal,
  • Mohamed Lyamine Chelaghmia,
  • Hassina Fisli,
  • Abdulaziz K. Assaifan,
  • Widad Drissi,
  • Hamid Satha,
  • Abed Mohamed Affoune,
  • Omar Khelifi,
  • Serge Mbokou Foukmeniok,
  • Maxime Pontié

摘要

In this study, a three-dimensional nickel foam-supported Ni(OH)2/NiOOH electrode was synthesized via a simple in situ electrochemical approach in NaOH solution, without the use of any nickel precursors. The resulting Ni(OH)2/NiF electrode was thoroughly characterized by scanning electron microscopy (SEM) and X-ray diffraction (XRD). For the first time, the fabricated Ni(OH)2/NiF sensor was employed as a highly efficient non-enzymatic electrochemical platform, enabling the selective detection of glucose, methanol, and ethanol in an alkaline media using cyclic voltammetry (CV) and amperometric techniques. The sensor exhibited wide linear detection ranges of 1.0 µM–10 mM for glucose, 1.0 µM–10 mM for methanol, and 1.0 µM–12 mM for ethanol, with corresponding low detection limits of 0.9, 1.8, and 2.0 µM, respectively. The proposed electrode demonstrated excellent sensitivity, reproducibility, and long-term stability, making it as a promising candidate for the individual determination of glucose, methanol, and ethanol in real samples such as blood serum and adulterated alcoholic beverages.