面向氨气检测的气敏材料开发现状研究

Research on The Development Status of Ammonia Sensitive Devices

氨气是一种对人体健康具有危害性的有毒气体,实现环境系统中氨气浓度的监测有利于环保和人员健康保护.为此,研究人员开发了多种氨气气敏材料,以求能开发出灵敏度高、响应恢复时间短、稳定性好并且具有良好选择性的氨气传感器.经过多年的实验研究,市面上已经出现了许多性能良好的氨气传感器,但是其中还有很多不足,许多传感器并不能兼备传感器所拥有的优良特性,比如有些灵敏度高的传感器不能在室温下工作、响应恢复时间短但稳定性比较差,这些问题都是现阶段开发传感器件所面临的直接问题.本文综述了检测氨气气敏材料的研究现状,并讨论了氨气传感器未来的发展趋势.

Ammonia is a toxic gas that is harmful to human health.It can monitor the concentration of ammonia in the environmental system,which is bene□cial to environmental protection and personnel health protection.To this end,researchers have developed a variety of ammonia gas sensing materials in order to develop ammonia sensors with high sensitivity,short response recovery time,good stability and good selectivity.After many years of experimental research,many ammonia sensors with good performance have appeared on the market,but there are still many deficiencies.Many sensors do not have the excellent characteristics that the sensors should have.For example,some sensors with high sensitivity cannot work at room temperature.Short response recovery time but poor stability.These problems are the direct problems facing the development of sensor devices at this stage.This paper summarizes the research status of ammonia-sensitive gas detection materials and discusses the future development trend of ammonia gas sensors.