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<p>Ammonia (NH<sub>3</sub>) monitoring in environmental and biomedical contexts poses significant challenges due to its impact on sensor sensitivity and selectivity. In the present study, a novel ternary MoSe<sub>2</sub>/PANI/Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> composite was synthesized using hydrothermal and oxidative polymerization techniques for high-performance NH<sub>3</sub> sensing. The newly developed sensor exhibits an exceptional response of 6481.1 upon exposure to 1000 ppm of NH<sub>3</sub> gas at room temperature (28 °C). Notably, the sensor shows an ultrafast response and recovery time of 4.7 s and 18.4 s, respectively, with a limit of detection of 0.6 ppm, along with outstanding selectivity and long-term stability over 90 days. Furthermore, the effect of humidity up to 90% RH and cross-sensitivity over various similar amines was also studied. A wireless IoT-enabled NH<sub>3</sub> leak detection prototype was developed, confirming the sensor’s practical utility. Furthermore, clinical evaluations on uremic patients highlight its promise for non-invasive chronic kidney disease (CKD) monitoring.</p>

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Development of high-performance NH3 gas sensor through novel MoSe2/PANI/Ti3C2Tx composite for medical diagnosis and industrial applications

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年8月29日

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  • Preety Yadav,
  • Neeraj Dhariwal,
  • Akanksha,
  • Amit Sanger,
  • Sung Bum Kang,
  • Vinod Kumar,
  • O. P. Thakur

摘要

Ammonia (NH3) monitoring in environmental and biomedical contexts poses significant challenges due to its impact on sensor sensitivity and selectivity. In the present study, a novel ternary MoSe2/PANI/Ti3C2Tx composite was synthesized using hydrothermal and oxidative polymerization techniques for high-performance NH3 sensing. The newly developed sensor exhibits an exceptional response of 6481.1 upon exposure to 1000 ppm of NH3 gas at room temperature (28 °C). Notably, the sensor shows an ultrafast response and recovery time of 4.7 s and 18.4 s, respectively, with a limit of detection of 0.6 ppm, along with outstanding selectivity and long-term stability over 90 days. Furthermore, the effect of humidity up to 90% RH and cross-sensitivity over various similar amines was also studied. A wireless IoT-enabled NH3 leak detection prototype was developed, confirming the sensor’s practical utility. Furthermore, clinical evaluations on uremic patients highlight its promise for non-invasive chronic kidney disease (CKD) monitoring.