State of the art overview wearable biohazard gas sensors based on nanosheets for environment monitoring applications

Nanosheets, a classification of two-dimensional nanomaterials with extremely high surface-to-volume ratios, have attracted great attention in various fields with vast applications. Owing to their specific structures, nanosheets possess prominent sensing properties including catalyst, electrical properties, etc., together with unique physical properties like remarkable adhesion, stretchability, and flexibility. Therefore, nanosheet materials could play a significant role in the field of wearable biohazard gas sensors which is one of the rising research topics in the field of biosensors. In this review, the state-of-the-art development of wearable biohazard gas sensors based on nanosheet materials is discussed and classified into four categories including wearable biohazard gas sensors based on nanosheets towards the monitoring of NO₂, NH₃, other gases, and multiple gases. Finally, the research trend in wearable biohazard gas sensors based on nanosheets is prospected.