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<p>The increasing consumption of high-protein seafood has heightened the demand for efficient detection of triethylamine (TEA), a key spoilage biomarker. In this study, a novel ternary SnO<sub>2</sub>-Pt/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> composite was for the first time fabricated via a combined strategy of electrospinning and electrostatic self-assembly for TEA sensing. Characterization confirmed the formation of a well-defined ternary heterostructure with abundant mesopores and a synergistic microstructure. Benefiting from this rational design, gas sensing tests revealed that the composite exhibits a high response, fast response/recovery, excellent cycling/long-term stability, and high selectivity with a low detection limit of 0.05&#xa0;ppm at an optimal temperature of 122.28°C, alongside stable performance under 30–70% relative humidity. The enhanced performance is attributed to the catalytic effect of Pt, high conductivity of MXene, and synergistic interactions among the components. This work provides new insights for developing high-performance TEA gas sensors with promising practical potential.</p> Graphical abstract <p></p>

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A highly sensitive and selective triethylamine gas sensor based on SnO2–Pt/Ti3C2Tx nanocomposite

  • 期刊论文

  • 发表日期：

    2026年2月4日

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  • Mengqi Lu,
  • Ruoyu Wang,
  • Xiaoxuan Miao,
  • Tingting Tang,
  • Wenfeng Hu,
  • Xiaoxuan Jin,
  • Haoxiang Wang,
  • Yuyang He,
  • Yang Wang,
  • Dongpo Xu

摘要

The increasing consumption of high-protein seafood has heightened the demand for efficient detection of triethylamine (TEA), a key spoilage biomarker. In this study, a novel ternary SnO2-Pt/Ti3C2Tx composite was for the first time fabricated via a combined strategy of electrospinning and electrostatic self-assembly for TEA sensing. Characterization confirmed the formation of a well-defined ternary heterostructure with abundant mesopores and a synergistic microstructure. Benefiting from this rational design, gas sensing tests revealed that the composite exhibits a high response, fast response/recovery, excellent cycling/long-term stability, and high selectivity with a low detection limit of 0.05 ppm at an optimal temperature of 122.28°C, alongside stable performance under 30–70% relative humidity. The enhanced performance is attributed to the catalytic effect of Pt, high conductivity of MXene, and synergistic interactions among the components. This work provides new insights for developing high-performance TEA gas sensors with promising practical potential.

Graphical abstract