Fig. 5

Hydrophilicity map of a 2 × 2 Ti₂CT_x with mixed terminated surface. The two axes identify the lateral displacement on the surface, referring to the termination positions. Terminations are shown in relief on the map. Hydrophilic regions (blue) are those rich in hydroxyl groups, where hydrogen bond networks are easily formed (inset A). White regions correspond to less hydrophilic areas, where H₂O interacts only moderately with the surface (inset B). Black tiny dots identify the average x and y coordinates of H₂O, for each of the 96 optimized water molecules