A Mixed-Solvent Strategy for Efficient Exfoliation of Inorganic Graphene Analogues

摘要

Layered two-dimensional (2D) nanomaterials such as graphene are a conceptually new class of materials that offers new access to low-dimensional physics. Besides well-known graphene, inorganic graphene analogues (IGAs) such as layered transition metal dichalcogenides (e.g., MoS2 and WS2)and boron nitride (BN) have been attracting rapidly increasing attention in the past few years, These IGAs were expected to exhibit unique properties and have great potential in applications like transistors, energy storage, thermal conductors, and topological insulators. Moreover, IGAs like MoS2 and WS2 have intrinsic band gap and high mobility, and may even compete with graphene in certain fields. However, investigations on IGAs have been significantly hindered by the practical difficulties in the preparation and assembly of these 2D nanomaterials.