Fig. 1
Fabrication of the MXene/nanofiber composite membrane. a The MXene is prepared from the Ti3AlC2 precursors using HF etching method. b SEM image of the as-prepared MXene nanosheets (scale bar: 1 µm). c The ANF is prepared from commercial Kevlar yarns using the KOH/DMSO exfoliation method. d TEM image of the as-prepared ANF (scale bar: 200 nm). e Suspension of ANF/MXene composite exhibits strong Tyndall effect. f A flexible, free-standing, paper-like MXene/ANF composite membrane with an ANF weight content of 11% obtained by vacuum-assisted filtration (scale bar: 5 mm). g Cross-section SEM image shows the lamellar microstructure of the composite membrane (scale bar: 400 nm). h Schematic of the interior structure of the MXene/ANF composite membrane
