Zhang Dongxiang, Liu Yingmin, Wang Yang, Li Zhi, Xiao Dongkun, Zhou Tianhong, Sun Mojie
School of Chemical Engineering, Northeast Electric Power University, Jilin 132012, China.
State Key Laboratory of Precision Measuring Technology and Instruments, Tianjin University, Tianjin 300072, China.
Sensors (Basel). 2025 Apr 22;25(9):2640. doi: 10.3390/s25092640.
Polyaniline (PANI) is currently one of the most extensively studied conductive polymers in the field of flexible gas sensors. However, sensors based on pure PANI generally suffer from problems such as low sensitivity and poor stability. To address these issues, in this work, a room-temperature hydrogen sulfide gas sensor of polyaniline/tungsten oxide/copper oxide (PANI/WO/CuO) was synthesized using in situ polymerization technology. This gas sensor displays a response value of 31.3% to 1 ppm hydrogen sulfide at room temperature, with a response/recovery time of 353/4958 s and a detection limit of 100 ppb. Such an excellent performance is attributed to the high surface area and large adsorption capacity of the ternary composite, as well as the multi-phase interface synergistic effect.
聚苯胺（PANI）是目前柔性气体传感器领域中研究最为广泛的导电聚合物之一。然而，基于纯聚苯胺的传感器通常存在灵敏度低和稳定性差等问题。为了解决这些问题，在本工作中，采用原位聚合法合成了一种聚苯胺/氧化钨/氧化铜（PANI/WO/CuO）室温硫化氢气体传感器。该气体传感器在室温下对1 ppm硫化氢的响应值为31.3%，响应/恢复时间为353/4958 s，检测限为100 ppb。如此优异的性能归因于三元复合材料的高比表面积和大吸附容量，以及多相界面协同效应。
