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<p>The importance of multifunctional materials for various energy and biomedical applications is attracting the attention of scientists worldwide. In this study, <i>Moringa-oleifera</i> plant extract was used for the synthesis of highly porous NiO nanostructures. The confirmation of the successful formation of the nanostructures was done by XRD, FT-IR, FE-SEM, and BET analyses. A high surface area of 121.6 m<sup>2</sup>/g was shown by the synthesized NiO. The synthesized electrocatalyst was utilized as a sensor, supercapacitor electrode, and an electrode for HER and OER analyses. The sensing studies detected the presence of glucose upto 1 µM, which ensured the efficient activity of the material towards glucose oxidation. The supercapacitance studies ensured a higher specific capacitance of 623.4&#xa0;F/g at a current density of 1&#xa0;A/g. The efficacy of the synthesized NiO towards electrocatalytic water splitting was analyzed primarily through linear sweep voltametric studies. The HER studies showed a lower overpotential of 187 mV at a current density of 10&#xa0;mA/cm<sup>2</sup>. The overpotential demonstrated by the material for OER at a current density of 5&#xa0;mA/cm<sup>2</sup> was 398 mV. The results confirmed the efficient multifunctionality of the <i>Moringa-Oleifera</i> plant extract aided synthesized NiO nanostructures.</p> Graphical Abstract <p></p>

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Bio-derived Porous NiO Nanostructures for Multifunctional Electrochemical Applications: Glucose Sensing, Supercapacitive Energy Storage, and Water Splitting

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • Manjusha Mathew,
  • P. H. Gangadharagowda,
  • K. Chandana,
  • G. T. Vidyavathi,
  • Ebin Sebastian,
  • K. Yogesh Kumar,
  • Arun Varghese

摘要

The importance of multifunctional materials for various energy and biomedical applications is attracting the attention of scientists worldwide. In this study, Moringa-oleifera plant extract was used for the synthesis of highly porous NiO nanostructures. The confirmation of the successful formation of the nanostructures was done by XRD, FT-IR, FE-SEM, and BET analyses. A high surface area of 121.6 m2/g was shown by the synthesized NiO. The synthesized electrocatalyst was utilized as a sensor, supercapacitor electrode, and an electrode for HER and OER analyses. The sensing studies detected the presence of glucose upto 1 µM, which ensured the efficient activity of the material towards glucose oxidation. The supercapacitance studies ensured a higher specific capacitance of 623.4 F/g at a current density of 1 A/g. The efficacy of the synthesized NiO towards electrocatalytic water splitting was analyzed primarily through linear sweep voltametric studies. The HER studies showed a lower overpotential of 187 mV at a current density of 10 mA/cm2. The overpotential demonstrated by the material for OER at a current density of 5 mA/cm2 was 398 mV. The results confirmed the efficient multifunctionality of the Moringa-Oleifera plant extract aided synthesized NiO nanostructures.

Graphical Abstract