Fig. 1: Synthesis strategy of 2D MOs/MSs.

a Schematic approach for the synthesis of ultrathin 2D MOs/MSs. b Diagram of the periodic table of elements. Metal oxides/sulfides highlighted in green were prepared via this method.

a Schematic approach for the synthesis of ultrathin 2D MOs/MSs. b Diagram of the periodic table of elements. Metal oxides/sulfides highlighted in green were prepared via this method.