Figure 2

FE-SEM images of (a) multilayer Ti₃C₂ MXene and (b) few-layer Ti₃C₂ MXene, the high-resolution FE-SEM image of multilayer Ti₃C₂ MXene is shown in the inset of (a). (c) TEM and (d) higher-resolution TEM images of few-layer Ti₃C₂ MXene, the inset of (d) is the corresponding fast Fourier transform (FFT) of the thin Ti₃C₂ MXene nanosheet. (e) The AFM image of Ti₃C₂ MXene nanosheets. The inserted image exhibits the thickness of single Ti₃C₂ MXene nanosheet. (f) Histograms of measured value for Ti₃C₂ MXene nanosheets thickness.