1 Key Lab for New Type of Functional Materials in Hebei Province, School of Materials Science and Engineering, Hebei University of Technology；2 School of Science, Hebei University of Technology,
MoS2 is a prototype of layered transition metal dichalcogenides. Owing to its unique electronic structure and physical and chemical performance, it has been widely used in areas of photocatalytical degradation of organic dyes, electrochemical hydrogen evolution reaction, and solar cells, etc. In recent years, MoS2 nanomaterials have drawn increased attentions due to its high specific surface area, narrow band gap, excellent electrical properties and high electron mobility. However, its intrinsic defect structures limit its applications in many ways. This review introduces different preparation methods for MoS2 with varied structure and morphologies. In addition, MoS2-based functional materials can be engineered by the interface modification with increased active sites, which reduces the electron-hole recombination rate thus higher quantum yield and enhances the cycle stability. In the end, we review its applications in areas of environment and energy usage.