Fig. 11.

a Schematic illustration of liquid-exfoliation process from bulk g-C₃N₄ to ultrathin nanosheets. Reproduced with permission from Ref. [90]. b TEM image of exfoliated ultrathin nanosheets, c higher magnification of a carbon nitride nanosheet edge viewed along [001]. Reproduced with permission from Ref. [91] d Schematic diagram of the lithiation and exfoliation of g-C₃N₄ nanosheets from bulk g-C₃N₄. Reproduced with permission from Ref. [92]. Copyright permissions from American Chemical Society. (Color figure online)