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<p>Herein, we have reported the preparation, characterization, and acetone sensing properties of ZnO, 2%,5%, and 10% Na-doped ZnO samples synthesized using the microwave-assisted combustion method, aimed to enhance the sensitivity at low temperatures. The prepared samples were characterized using several characterization techniques to analyze their phase structure, crystallinity, and morphology. X-ray diffraction (XRD) analysis confirmed that the synthesized ZnO samples possess a well-crystalline hexagonal wurtzite crystal structure. The detailed experiments revealed that at an optimized temperature, i.e., ~ 50&#xa0;°C, 5% Na-ZnO sample exhibited a significant sensitivity towards acetone concentrations of 100, 200, 300, 400, and 500 ppm with response value of ~ 39, ~54, ~ 100, ~214, and ~ 300% and the response and recovery time of ~ 442 /~62&#xa0;s, respectively. The results indicate that 5% Na-ZnO samples have a high sensing response towards acetone at low operating temperatures.</p>

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Impact of sodium on acetone sensing behaviour of ZnO prepared by microwave-assisted combustion method

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月24日

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  • Divyanshu Singh,
  • Anurag Shukla,
  • Sumit Mishra,
  • Brajendra Singh

摘要

Herein, we have reported the preparation, characterization, and acetone sensing properties of ZnO, 2%,5%, and 10% Na-doped ZnO samples synthesized using the microwave-assisted combustion method, aimed to enhance the sensitivity at low temperatures. The prepared samples were characterized using several characterization techniques to analyze their phase structure, crystallinity, and morphology. X-ray diffraction (XRD) analysis confirmed that the synthesized ZnO samples possess a well-crystalline hexagonal wurtzite crystal structure. The detailed experiments revealed that at an optimized temperature, i.e., ~ 50 °C, 5% Na-ZnO sample exhibited a significant sensitivity towards acetone concentrations of 100, 200, 300, 400, and 500 ppm with response value of ~ 39, ~54, ~ 100, ~214, and ~ 300% and the response and recovery time of ~ 442 /~62 s, respectively. The results indicate that 5% Na-ZnO samples have a high sensing response towards acetone at low operating temperatures.