Microwave-assisted 1T to 2H phase reversion of MoS2 in solution: a fast route to processable dispersions of 2H-MoS2 nanosheets and nanocomposites

Exfoliated molybdenum disulfide (MoS₂) has unique 2H phase and semiconductor properties and potential applications across a wide range of fields. However, the chemically exfoliated MoS₂ nanosheets from Li _x MoS₂ have a 1T phase, and searching for a fast route to get processable 2H-MoS₂ nanosheets and its nanocomposites is still an urgent task. This study reports on a simple, fast and efficient microwave strategy to achieve the 1T to 2H phase conversion of MoS₂ and the successful preparation of processable 2H-MoS₂ nanosheets and their nanocomposites. The method here may be easily changed to achieve the phase change of other exfoliated TMDs.