Figure 1.

(a) Schematic illustration of exfoliation 2D amorphousMoS₃ nanosheets and their chemical structure. Reprinted with permission from Ref. [23]. Copyright Royal Society of Chemistry, 2019. (b) Schematic illustration of the general synthetic process for amorphous noble metal nanosheets. Reprinted with permission from Ref. [33]. (c) The schematic illustration of the synthesis of amorphous metal hydroxide nanosheets. Reprinted with permission from Ref. [28]. Copyright Royal Society of Chemistry, 2019. (d) Schematic illustration of the formation mechanism for amorphous MoO₃ nanosheets. Reprinted with permission from Ref. [31]. Copyright Wiley-VCH, 2017.