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<p>This study presents a novel approach to enhancing CO₂ gas sensor performance by series of hybrid thin films composed of varying ratios (100SnO2: 00 ZnO/ PPy/GP, 90SnO2: 10ZnO/ PPy/GP, 70SnO2: 30ZnO/ PPy/GP, 50SnO2: 50ZnO/ PPy/GP, 30SnO2: 70ZnO/ PPy/GP, and 100 ZnO2: 00 SnO2/ PPy/GP) of SnO₂ and ZnO nanoparticles synthesized via the sol-gel method. Unlike previous works that focus on single-material sensors, this research systematically explores the structural, morphological, and gas-sensing characteristics of composite thin films ranging from pure SnO₂ to pure ZnO deposited on PPy/GP substrates using screen printing. Detailed XRD and SEM analyses provide insight into the crystallite size, crystal structure, and surface morphology of each composition. The comparative evaluation of sensor response parameters such as sensitivity, selectivity, response time, and stability across the series enables the identification of an optimal SnO₂-ZnO ratio for CO₂ detection. This combinatorial approach introduces a new direction in the development of metal oxide-based gas sensors by leveraging the synergistic effects of SnO₂ and ZnO nanostructures for improved performance.</p>

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SnO2 and ZnO based CO2 gas sensor using sol-gel technique

  • 期刊论文

  • 发表日期：

    2025年11月10日

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  • C. C. Jadhao,
  • G. T. Lamdhade,
  • K. B. Raulkar,
  • A. O. Chauhan,
  • R. B. Butley

摘要

This study presents a novel approach to enhancing CO₂ gas sensor performance by series of hybrid thin films composed of varying ratios (100SnO2: 00 ZnO/ PPy/GP, 90SnO2: 10ZnO/ PPy/GP, 70SnO2: 30ZnO/ PPy/GP, 50SnO2: 50ZnO/ PPy/GP, 30SnO2: 70ZnO/ PPy/GP, and 100 ZnO2: 00 SnO2/ PPy/GP) of SnO₂ and ZnO nanoparticles synthesized via the sol-gel method. Unlike previous works that focus on single-material sensors, this research systematically explores the structural, morphological, and gas-sensing characteristics of composite thin films ranging from pure SnO₂ to pure ZnO deposited on PPy/GP substrates using screen printing. Detailed XRD and SEM analyses provide insight into the crystallite size, crystal structure, and surface morphology of each composition. The comparative evaluation of sensor response parameters such as sensitivity, selectivity, response time, and stability across the series enables the identification of an optimal SnO₂-ZnO ratio for CO₂ detection. This combinatorial approach introduces a new direction in the development of metal oxide-based gas sensors by leveraging the synergistic effects of SnO₂ and ZnO nanostructures for improved performance.