fig3

Figure 3. (A) The zeta potential of HCl-treated melamine and 3D N-Ti₃C₂T_x. XRD patterns of Ti₃AlC₂, multi-layered Ti₃C₂T_x, few-layered Ti₃C₂T_x sheets and 3D N-Ti₃C₂T_x with (B) 2θ from 2° to 15°, (C) 2θ from 2° to 70°. (D) N₂ adsorption-desorption isotherms and (E) pore-size distribution curves of 3D N-Ti₃C₂T_x and 3D Ti₃C₂T_x. XPS pattern of 3D N-Ti₃C₂T_x (F) C 1s, (G) Ti 2p, (H) O 1s and (I) N 1s.