Research status of gas sensing performance of Ti(3)C(2)Tx-based gas sensors: A mini review

Developing efficient gas sensing materials capable of sensitive, fast, stable, and selective detection is a requisite in the field of indoor gas environment monitoring. In recent years, metal carbides/nitrides (MXenes) have attracted attention in the field of gas sensing because of their high specific surface area, good electrical conductivity, and high hydrophilicity. Ti(3)C(2)Tx, the first synthesised MXene material, has also become the most popular MXene material owing to its low formation energy. In this paper, the latest progress in the application of Ti(3)C(2)Tx-based nanomaterials in the field of gas sensors is reviewed. Some challenges currently faced by Ti(3)C(2)Tx gas sensors are discussed, and possible solutions are proposed, focusing on the use of composite materials and surface functionalization methods to modify Ti(3)C(2)Tx nanomaterials to improve their sensing performance for the detection of gaseous volatile organic compounds. This study highlights the application prospects of Ti(3)C(2)Tx nanomaterials in gas sensors.