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<p>The structural, electrochemical and microbial properties of ZnCo<sub>2</sub>O<sub>4</sub> nanoparticles synthesized by low-temperature Sol-Gel technique using a precipitant agent (H<sub>2</sub>C<sub>2</sub>O<sub>4</sub>·2H<sub>2</sub>O) are detailed in this study. The study of physico-chemical properties of prepared nanoparticles were well investigated by various spectral techniques; X-ray diffraction (XRD) patterns shows the crystallinity and spinel cubic (Fd3m) configuration with average particle sizes of ∼ 17–19&#xa0;nm calculated by Scherrer’s process. With support of SEM, HR-TEM and SAED analysis confirmed its morphological development in configuration and particle sizes. The optical analysis of ZnCo<sub>2</sub>O<sub>4</sub> nanoparticles were recorded to be 4.63 to 4.9&#xa0;eV by plotting energy (hν) v/s [F(R)hv]<sup>2</sup> from Kubelka–Munk activity. The electrochemical examinations modified glassy carbon electrode with ZnCo<sub>2</sub>O<sub>4</sub> (200 <sup>o</sup>C) nanoparticle was achieved by cyclic voltammetry method at different scan rate of 1-5mV/s. The excellent electrochemical sensing action against N<sub>2</sub>H<sub>4</sub> molecule at 10 mM concentration was recorded in a phosphate buffer solution of pH 7.4 and its limit of detection was calculated to be 0.3 µM. The antibacterial activities of both as-formed and calcined at 200, 400 and 600 <sup>o</sup>C of ZnCo<sub>2</sub>O<sub>4</sub> NPs (50&#xa0;µl) were tested against gram positive Bacillus and gram negative Pseudomonas isolates using Muller Hinton agar plates.</p>

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Fabrication of Sustainable ZnCo2O4 Nanoparticle for Electrochemical Sensing of N2H4 and Microbial Applications

  • 期刊论文

  • 发表日期：

    2025年7月24日

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  • K. Gurushantha,
  • B. S. Surendra,
  • T. Kiran,
  • M. Bhaskar,
  • S. Shashidhar,
  • Swarnalata Swain,
  • K. V. Brungesh,
  • K. M. Girish

摘要

The structural, electrochemical and microbial properties of ZnCo2O4 nanoparticles synthesized by low-temperature Sol-Gel technique using a precipitant agent (H2C2O4·2H2O) are detailed in this study. The study of physico-chemical properties of prepared nanoparticles were well investigated by various spectral techniques; X-ray diffraction (XRD) patterns shows the crystallinity and spinel cubic (Fd3m) configuration with average particle sizes of ∼ 17–19 nm calculated by Scherrer’s process. With support of SEM, HR-TEM and SAED analysis confirmed its morphological development in configuration and particle sizes. The optical analysis of ZnCo2O4 nanoparticles were recorded to be 4.63 to 4.9 eV by plotting energy (hν) v/s [F(R)hv]2 from Kubelka–Munk activity. The electrochemical examinations modified glassy carbon electrode with ZnCo2O4 (200 oC) nanoparticle was achieved by cyclic voltammetry method at different scan rate of 1-5mV/s. The excellent electrochemical sensing action against N2H4 molecule at 10 mM concentration was recorded in a phosphate buffer solution of pH 7.4 and its limit of detection was calculated to be 0.3 µM. The antibacterial activities of both as-formed and calcined at 200, 400 and 600 oC of ZnCo2O4 NPs (50 µl) were tested against gram positive Bacillus and gram negative Pseudomonas isolates using Muller Hinton agar plates.