Department of Microelectronics, Czech Technical University in Prague, Technicka 2, 166 27 Prague, Czech Republic.
Department of Material Analysis, FZU-Institute of Physics of the Czech Academy of Sciences, Na Slovance 1999/2, 182 00 Prague, Czech Republic.
Sensors (Basel). 2023 Jan 18;23(3):1106. doi: 10.3390/s23031106.
This work presents the design of a polymer-film-based sensor for gas detection. Different types of polyaniline are used as active layers. The advantages of resistive sensors with PANI layers are easy preparation and low production cost. At room temperature, polymer films have a high sensitivity to gas concentrations. The developed sensor works on the idea of electrical resistance shifting with gas concentration. Three different polymerization solutions are employed to synthesize the polyaniline (PANI) active layers (aqueous solution, sulfuric acid solution, and acetic acid solution). Active layers are evaluated in a controlled environment for their ability to detect ammonia, carbon monoxide, nitrogen monoxide, acetone, toluene, and relative humidity in synthetic air. PANI layers polymerized in acetic acid solutions exhibit good sensitivity toward ammonia.
本工作提出了一种用于气体检测的聚合物薄膜传感器的设计。不同类型的聚苯胺被用作活性层。具有聚苯胺层的电阻式传感器的优点是制备简单且生产成本低。在室温下，聚合物薄膜对气体浓度具有高灵敏度。所开发的传感器基于电阻随气体浓度变化的原理工作。三种不同的聚合溶液被用于合成聚苯胺（PANI）活性层（水溶液、硫酸溶液和乙酸溶液）。在受控环境中评估活性层检测合成空气中的氨、一氧化碳、一氧化氮、丙酮、甲苯和相对湿度的能力。在乙酸溶液中聚合的 PANI 层对氨表现出良好的灵敏度。
