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<p>The present study focuses on the effect of refluxing temperature on the surface morphology and NO<sub>2</sub> gas sensing properties of zinc oxide (ZnO) nanorods synthesized by a facile reflux method. ZnO nanorods were grown on the glass substrates at various refluxing temperatures (by tuning the rate of heating to maintain the constant temperature at 50&#xa0;°C, 60&#xa0;°C, 70&#xa0;°C, and 80&#xa0;°C, and labelled as Z-50, Z-60, Z-70, and Z-80 respectively). The synthesized ZnO samples were characterized using techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM) to determine its crystallinity, particle size, and morphology respectively. Then the NO<sub>2</sub> gas sensing properties of ZnO nanorods, refluxed at different temperatures, were systematically investigated. The sample Z-70 shows superior performance with 93% of sensitivity and fast response within 17&#xa0;s to the NO<sub>2</sub> gas. Hence, the results reveal that refluxing temperature significantly affects the morphology and particle size of samples, which influences the gas sensing property of ZnO.</p>

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Facile reflux synthesis of ZnO nanorods: influence of refluxing temperature on morphology and NO2 sensing properties

  • 期刊论文

  • 发表日期：

    2025年8月15日

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  • S. S. Patil,
  • V. A. Sathe,
  • S. D. Jituri,
  • P. B. Kashid,
  • G. S. Nivhekar,
  • A. S. Patil,
  • P. S. Nikam,
  • S. M. Lengare,
  • S. S. Suryavanshi,
  • A. A. Pisal

摘要

The present study focuses on the effect of refluxing temperature on the surface morphology and NO2 gas sensing properties of zinc oxide (ZnO) nanorods synthesized by a facile reflux method. ZnO nanorods were grown on the glass substrates at various refluxing temperatures (by tuning the rate of heating to maintain the constant temperature at 50 °C, 60 °C, 70 °C, and 80 °C, and labelled as Z-50, Z-60, Z-70, and Z-80 respectively). The synthesized ZnO samples were characterized using techniques such as X-ray diffraction (XRD), scanning electron microscopy (SEM) to determine its crystallinity, particle size, and morphology respectively. Then the NO2 gas sensing properties of ZnO nanorods, refluxed at different temperatures, were systematically investigated. The sample Z-70 shows superior performance with 93% of sensitivity and fast response within 17 s to the NO2 gas. Hence, the results reveal that refluxing temperature significantly affects the morphology and particle size of samples, which influences the gas sensing property of ZnO.