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<p>Hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) plays a vital role in various aspects of daily life, such as food, health, and the&#xa0;environment. Foods containing excessive quantities of H<sub>2</sub>O<sub>2</sub> residue may have harmful impacts on human health. In this work, tin dioxide nanoparticles (SnO<sub>2</sub>NPs) were synthesized by a hydrothermal method and subsequently characterized using an X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscope (FESEM), and Energy-dispersive X-ray analysis (EDAX). An electrochemical sensor for analyzing hydrogen peroxide (H<sub>2</sub>O<sub>2</sub>) was developed by immobilizing tin dioxide nanoparticles onto a graphite electrode (SnO<sub>2</sub>/GE). The electrocatalytic behavior of the developed electrochemical sensor was studied using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results indicated that the SnO<sub>2</sub>/GE exhibits notable electrocatalytic oxidation and reduction capabilities for detecting and quantifying H<sub>2</sub>O<sub>2</sub>. The DPV technique determined parameters included linear range of 1–5&#xa0;μM, a detection limit is 0.196&#xa0;μM, and a qualification limit is 2.38&#xa0;μM for the reduction peak with correlation coefficient <i>R</i><sup>2</sup> is 0.98. The stability of the sensor is measured for five days and has 98.7% of&#xa0;stability. The highest current is measured at pH 7. The developed sensor was successfully used to detect trace levels of H<sub>2</sub>O<sub>2</sub>.</p>

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Investigation on electrochemical sensing behavior of hydrogen peroxide using tin dioxide (SnO2) nanoparticles

  • 期刊论文

  • 发表日期：

    2025年4月22日

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  • S. S. Beenaben,
  • Radha Sankararajan,
  • Mythili Kumaresan

摘要

Hydrogen peroxide (H2O2) plays a vital role in various aspects of daily life, such as food, health, and the environment. Foods containing excessive quantities of H2O2 residue may have harmful impacts on human health. In this work, tin dioxide nanoparticles (SnO2NPs) were synthesized by a hydrothermal method and subsequently characterized using an X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR), Field emission scanning electron microscope (FESEM), and Energy-dispersive X-ray analysis (EDAX). An electrochemical sensor for analyzing hydrogen peroxide (H2O2) was developed by immobilizing tin dioxide nanoparticles onto a graphite electrode (SnO2/GE). The electrocatalytic behavior of the developed electrochemical sensor was studied using cyclic voltammetry (CV) and differential pulse voltammetry (DPV). The results indicated that the SnO2/GE exhibits notable electrocatalytic oxidation and reduction capabilities for detecting and quantifying H2O2. The DPV technique determined parameters included linear range of 1–5 μM, a detection limit is 0.196 μM, and a qualification limit is 2.38 μM for the reduction peak with correlation coefficient R2 is 0.98. The stability of the sensor is measured for five days and has 98.7% of stability. The highest current is measured at pH 7. The developed sensor was successfully used to detect trace levels of H2O2.