fig8

Figure 8. (A) A schematic representation of MAX structures from n = 1 to n = 4 and their etched MXene structures. Reprinted with permission from Ref.^[103]. Copyright 2021 Wiley-VCH)^[103]. (B) A schematic of different surface functional groups depending on the etching route. Reprinted with permission from Ref.^[104]. Copyright 2018 Wiley-VCH^[104]. (C) Schematic depicting different MXene stoichiometries. Reprinted with permission from Ref.^[105]. Copyright 2023 Wiley-VCH^[105].