气敏新材料MXenes在呼出气体传感器中的应用

Application for Exhaled Gas Sensor Based on Novel Mxenes Materials

电子鼻结合人工智能对呼出气进行检测、分析和识别已成为非侵入性医疗检测领域的研究热点。然而,目前已报道的气体传感材料尚不能同时满足高灵敏度、高选择性和稳定的室温检测,阻碍了气体传感器在医疗健康领域的应用及发展,寻找合适的传感材料具有重要的意义和挑战。新型二维层状纳米材料MXenes具有种类多、比表面积大、导电性能强、表面含有丰富的官能团以及能带宽度可调等优异性能,是高灵敏、低能耗气体传感器的明星候选材料。本综述针对MXenes基材料的特殊结构,总结梳理了MXenes基材料在气体传感中的最新研究成果,聚焦于MXenes材料的气体传感机理和改性方法,对MXenes材料用于气体传感依然存在的问题和挑战进行深入探讨。

In order to detect,analyze,and identify exhaled gas,electronic-nose combined with artificial intelligence has become a hot spot in the field of non-invasive medical detection.However,gas sensing materials cannot meet the requirements of high sensitivity as well as high selectivity at room temperature,which seriously hinders the application of gas sensors in the field of health care.It is still challenging to find suitable materials for the electronic-nose.With many unique properties:a wide variety,large specific surface area,strong electrical conductivity,rich functional groups on the surface,and adjustable bandwidth,novel two-dimensional MXenes material has become a star candidate for the gas sensor of highly sensitive and low energy consumption.In this review,we summarize the latest research achievements of MXenes based materials with the special structure in gas sensing,focus on the gas sensing mechanism and modification methods,and probe into the problems and challenges still existing in the application of MXenes materials in gas sensing.