Facile and efficient exfoliation of inorganic layered materials using liquid alkali metal alloys

Abstract

A facile and efficient exfoliation process has been reported to produce single- and few-layer nanosheets of MoS₂, WS₂ and BN using liquid alloys of alkali metals at room temperature. The colloidal dispersions of MoS₂ and WS₂ layers were highly stable over several months, which allowed us to easily prepare films of MoS₂ and WS₂ by vacuum filtration or spraying.