Fig. 2: Conversion of Ti3C2Tx into 2D TiO2 flakes.

a XRD patterns and b Raman spectra of the Ti3C2Tx before and after annealing at 400 °C for 50 h. c XPS spectra of the Ti3C2Tx and the derived TiO2; d AFM images and height profiles of Ti3C2Tx and a derived TiO2 flake on a SiO2/Si substrate (scale bar: 2 μm); e HRTEM images of Ti3C2Tx and derived TiO2 flakes (scale bar: 1 nm); f Crystal structures of Ti3C2Tx and derived anatase phase of TiO2.