State Key Laboratory of Integrated Optoelectronics, Key Laboratory of Advanced Gas Sensors, Jilin Province, College of Electronic Science and Engineering, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
State Key Laboratory of Supramolecular Structure and Materials, College of Chemistry, Jilin University, 2699 Qianjin Street, Changchun 130012, China.
J Hazard Mater. 2022 Oct 15;440:129695. doi: 10.1016/j.jhazmat.2022.129695. Epub 2022 Jul 28.
Triethylamine (TEA), as a common and widely used industrial raw material, is extremely hazardous to the environment and human health. Therefore, the development of a portable gas-sensing technology for high-efficiency detection of TEA is of great worth for human health and environmental monitoring. In this work, a mixed potential type TEA sensor was initially developed based on pyrochlore GdZrO solid state electrolyte and BiVO sensing electrode. The sensor generates high response values of - 62.2 mV and - 134.4 mV to 5 ppm and 100 ppm TEA at 500 °C, respectively. The response value of the sensor displays a logarithmic linear relationship with the concentration of TEA in the range of 1-100 ppm with the sensitivity of - 50.8 mV/decade. Besides, the sensor shows good response and recovery characteristics, and the response and recovery time to 10 ppm TEA is 10 s and 89 s, respectively. Moreover, the sensor possesses good humidity resistance, reproducibility and stability. The sensing behavior of the sensor is explained by the mixed potential sensing mechanism, which is confirmed by the measurement of the polarization curves. This work provides a good supplement for TEA gas sensor, which holds important application value for the sensitive detection of TEA in the environment.
三乙胺（TEA）作为一种常见且广泛使用的工业原料，对环境和人体健康具有极高的危害性。因此，开发一种用于高效检测 TEA 的便携式气体传感技术对于人类健康和环境监测具有重要意义。在这项工作中，我们最初基于钙钛矿 GdZrO 固体电解质和 BiVO 传感电极开发了一种混合电势型 TEA 传感器。该传感器在 500°C 下对 5ppm 和 100ppm TEA 的响应值分别高达-62.2mV 和-134.4mV。传感器的响应值与 TEA 浓度在 1-100ppm 范围内呈对数线性关系，灵敏度为-50.8mV/decade。此外，该传感器还表现出良好的响应和恢复特性，对 10ppm TEA 的响应和恢复时间分别为 10s 和 89s。此外，该传感器还具有良好的抗湿性、重现性和稳定性。传感器的传感行为通过极化曲线的测量得到了混合电势传感机制的解释。这项工作为 TEA 气体传感器提供了良好的补充，对于环境中 TEA 的灵敏检测具有重要的应用价值。
