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<p>Zinc oxide (<i>ZnO</i>) nanoparticle- modified manganese oxide (<i>MnO</i>)- based gas sensors were prepared and investigated to detect two different hazardous gases <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(SO_2\)</EquationSource> </InlineEquation> and <InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(NH_3\)</EquationSource> </InlineEquation>. Two different <i>ZnO</i>-<i>MnO</i> nano- composites with different ratio of <i>MnO</i> inclusions were prepared using cost effective sol–gel method. Both the devices show good responses towards the target gases at room temperature with better response for higher <i>MnO</i> inclusion. Both the devices show distinctly different responses towards <InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(SO_2\)</EquationSource> </InlineEquation> and <InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(NH_3\)</EquationSource> </InlineEquation> gases indicating high selectivity. Mathematical model was used to analyze the response curves to identify the response parameters. The parameters can be used as a calibration tool for the device for a particular target gas.</p>

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ZnO-MnO nano-composite based gas sensor: Experimental study and mathematical analysis for calibrating the sensing process

  • 期刊论文

  • 发表日期：

    2025年11月5日

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  • Arnab Gangopadhyay,
  • Aditi Sarkar,
  • Bijoy Jana,
  • Papi Sarkar,
  • Mousumi Pramanik,
  • Kaustuv Das

摘要

Zinc oxide (ZnO) nanoparticle- modified manganese oxide (MnO)- based gas sensors were prepared and investigated to detect two different hazardous gases \(SO_2\) and \(NH_3\) . Two different ZnO-MnO nano- composites with different ratio of MnO inclusions were prepared using cost effective sol–gel method. Both the devices show good responses towards the target gases at room temperature with better response for higher MnO inclusion. Both the devices show distinctly different responses towards \(SO_2\) and \(NH_3\) gases indicating high selectivity. Mathematical model was used to analyze the response curves to identify the response parameters. The parameters can be used as a calibration tool for the device for a particular target gas.