导电聚合物气敏传感器研究进展

Research progress of conductive polymer gas sensors

气敏传感器是利用材料的气敏特性实现目标气体浓度检测的电子元器件,在生产安全、环境监测、临床医学等领域均有广泛应用。气敏材料主要分为金属氧化物半导体材料、导电聚合物(CP)材料、金属有机框架材料。导电聚合物因其成本低、易于合成,在室温下对氨气等有害气体表现出良好的响应的特点而受到广泛关注。近年来导电聚合物复合物的研究也极大地提高了导电聚合物的气敏性能。分析了导电聚合物电阻调控机理,重点介绍了近年来对氨气、二氧化氮、硫化氢等气体的导电聚合物及其复合物的气敏传感器的研究进展,简要介绍了导电高分子在甲醇、三乙胺、一氧化碳等气体检测中的研究情况,最后展望了导电聚合物在气体传感领域的应用前景。

Gas sensors are electronic components that utilize the gas-sensitive properties of materials to detect target gas concentrations.They are widely used in production safety,environmental monitoring,clinical medicine and other fields.Gas sensing materials are mainly divided into metal oxide semiconductor materials,conductive polymer(CP)materials,and metal organic framework materials.Conductive polymers have attracted extensive attention due to their low cost,easy synthesis,and good response to harmful gases such as ammonia at room temperature.Recent studies on CP composites have also greatly improved the gas-sensing properties of CP.In this paper,the regulation mechanism of CP resistance is analyzed,and the research progress of CP and their composite gas sensors for NH3,NO2,H2 S and other gases in recent years is mainly introduced,the research status of CP in the detection of methanol,triethylamine,carbon monoxide and other gases is briefly introduced.Finally,the application prospects of CP in the field of gas sensing are prospected.