Fig. 6
a Schematic illustration of the Ti3C2Tx MXene-based gas sensor [87]. b Selective detection of ethanol by Ti3C2Tx gas sensor [87]. Copyright 2018, American Chemical Society. c Fabrication of Ti3C2Tx/WSe2 hybrids [88]. d Mechanism of sensing enhancement for the Ti3C2Tx/WSe2 hybrid [88]. e Comparison of the detection ability of Ti3C2Tx and Ti3C2Tx/WSe2 hybrid for various volatile organic compounds at 40 ppm [88]. Copyright 2020, Springer Nature. f Ti3C2Tx treated by urea-involved solvothermal reactions to obtain the nitrogen-functionalized heterophase TiO2 homojunctions (N-MXene) [90]. g Selectivity detection of NH3 by modified the N-MXene [90]. Copyright 2021, American Chemical Society. h Alkaline MXene to enhance gas response to ammonia NH3 [67]. Copyright 2019, American Chemical Society. i MXene/rGO hybrid structure to selected detection of NH3 [29]. Copyright 2020, American Chemical Society. j Selective detection of the Ti3C2Tx MXene/PANI/BC composite aerogel-based gas sensor with high gas response [91]. Copyright 2021, American Chemical Society