fig4

Figure 4. Schematics of perforation on 2D materials. (A) Low-dose e-beam patterning of ZIF-L with pyridine as an etchant^[176]. Copyright 2021, American Chemical Society. (B) UV irradiation etching of MoS₂/WS₂ nanosheets^[177]. Copyright 2016, Royal Society of Chemistry. (C) Focused ion beam etching process on GO^[178]. Copyright 2019, Elsevier Ltd. (D) Plasma etching process^[179]. Copyright 2020, MDPI. (E) The synthesis of porous Si/C composite nanosheets by chemical etching^[180]. Copyright 2019, American Chemical Society.