石墨烯结构型氨气传感器研究进展

Research progress of graphene-structured ammonia sensor

石墨烯基气体传感器具有噪声低、能耗小和常温下即可检测等优点,在医疗诊断、气体检测和农业生产等方面有着广泛的应用。然而,传统石墨烯型传感器往往存在着恢复时间长和选择性低等问题。为了使传感器工作更加灵敏,开发基于石墨烯及其衍生物的复合新型气敏材料用以降低恢复时间和提高选择性,是当前的主要研究热点。简要介绍了近年来石墨烯复合气敏材料(如金属氧化物半导体、导电聚合物、金属有机骨架化合物、二维过渡金属碳氮化物等)用于氨气检测的研究现状,展望了其在微机电系统集成化等领域的应用前景。

Graphene-based gas sensors have the advantages of low noise,low energy consumption,and efficient detection at room temperature,and are widely used in medical diagnostics,gas detection and agricultural production and so on.However,the traditional graphene-based sensors often have the problems of long recovery time and low selectivity.In order to make the sensor work more sensitive,the development of new composite gas sensing materials based on graphene and its derivatives to reduce the recovery time and improve the selectivity is the main research hotspot at present.The research status of graphene composite gas-sensitive materials materials(such as metal oxide semiconductor,conductive polymer,metal organic skeleton compound,two-dimensional transition metal carbonitride,etc.)for ammonia detection in recent years was briefly introduced,and the application prospect in the field of micro electromechanical systems(MEMS)integration was prospected.