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<p>ZnSnO3-based gas sensors have attracted increasing attention for the detection of volatile organic compounds; however, the influence of calcination temperature on hollow microstructure formation and its direct correlation with gas sensing performance has not been fully clarified. In this work, hollow ZnSnO3 microcubes were synthesized via a co-precipitation method and calcined at different temperatures to systematically investigate their structural, morphological, and gas sensing properties. X-ray diffraction, FESEM, FTIR, TEM, BET and Raman analyses reveal that calcination temperature plays a critical role in controlling crystallinity, particle size, and hollow architecture formation. Gas sensing measurements demonstrate that the ZnSnO3 sample calcined at 700&#xa0;°C exhibits the highest sensing response, rapid response–recovery behavior, and improved stability toward acetone gas. The enhanced sensing performance is attributed to optimized crystallinity, increased surface oxygen adsorption, and efficient electron transport facilitated by the hollow microcube architecture. This study provides new insight into temperature-driven structural tuning of ZnSnO3 for high-performance gas sensing applications.</p>

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Enhanced Acetone Gas Sensing Characteristics of Hollow ZnSnO3 Microcubes Synthesized via Co-precipitation

  • 期刊论文

  • 发表日期：

    2026年4月6日

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  • Shiva Azizi,
  • Iraj Kazeminezhad

摘要

ZnSnO3-based gas sensors have attracted increasing attention for the detection of volatile organic compounds; however, the influence of calcination temperature on hollow microstructure formation and its direct correlation with gas sensing performance has not been fully clarified. In this work, hollow ZnSnO3 microcubes were synthesized via a co-precipitation method and calcined at different temperatures to systematically investigate their structural, morphological, and gas sensing properties. X-ray diffraction, FESEM, FTIR, TEM, BET and Raman analyses reveal that calcination temperature plays a critical role in controlling crystallinity, particle size, and hollow architecture formation. Gas sensing measurements demonstrate that the ZnSnO3 sample calcined at 700 °C exhibits the highest sensing response, rapid response–recovery behavior, and improved stability toward acetone gas. The enhanced sensing performance is attributed to optimized crystallinity, increased surface oxygen adsorption, and efficient electron transport facilitated by the hollow microcube architecture. This study provides new insight into temperature-driven structural tuning of ZnSnO3 for high-performance gas sensing applications.