Two-dimensional MoS2: Properties, preparation, and applications

TLDR

Two‑dimensional transition‑metal dichalcogenides, especially MoS₂, have attracted intense interest because their monolayer form exhibits a direct 1.8‑eV band gap and layer‑dependent electronic structure, addressing graphene’s lack of a band gap. This review surveys recent advances in the optical and electronic properties, synthesis methods, and prospective applications of 2D MoS₂. It outlines strategies for fabricating MoS₂‑graphene hybrid structures to enhance individual component performance and expand functional uses in flexible electronics, energy storage, harvesting, and electrochemical catalysis.

Abstract

Graphene-like two-dimensional (2D) transition metal dichalcogenides (TMDCs) have been attracting a wide range of research interests. Molybdenum disulfide (MoS2) is one of the most typical TMDCs. Its particular direct band gap of 1.8 eV in monolayer and layer dependence of band structure tackle the gapless problems of graphene, thus making it scientific and industrial importance. In this Review, we attempt to provide the latest development of optical and electronic properties, synthesis approaches, and potential applications of 2D MoS2. A roadmap towards fabricating hybrid structures based on MoS2 and graphene is highlighted, proposing ways to enhance properties of the individual component and broaden the range of functional applications in various fields, including flexible electronics, energy storage and harvesting as well as electrochemical catalysis.