Hydrothermal synthesis of two-dimensional MoS2 and its applications

Abstract

Two-dimensional (2D) transition metal dichalcogenides (TMDs) have attracted tremendous attention because of their unique electronic, optical and chemical properties. 2D TMDs, especially 2D MoS 2 , have been proved to show great potential in various applications such as sensing, hydrogen evolution and lithium ion batteries. Therefore, methods for the scalable preparation of 2D materials and 2D nanocomposites of high quality and low cost must be developed. Among the various synthesis methods, the hydrothermal synthesis method is simple and can meet the above requirements. In this review, the recent advances in the controllable hydrothermal synthesis of 2D MoS 2 and its nanocomposites by the hydrothermal synthesis method are highlighted. We provide insight into the growth mechanisms of few-layered 2D MoS 2 with different morphologies and the key technologies to realize wafer-scale growth of continuous and homogeneous 2D films which are important for practical applications. Further, the typical applications of TMDs in nonlinear optics as ultrafast optical modulation devices are presented based on work of our institute. For more clarity, we summarize the current challenges of the hydrothermal synthesis method encountering, and suggest solutions to these challenges concerning future developments in practical applications.

Bottom-Up Engineering Strategies for High-Performance Thermoelectric Materials

“…Aqueous solution-based hydrothermal synthesis has been widely used for the synthesis of 2D type transition metal dichalcogenides [188][189][190].…”

Molybdenum Disulphide Heterointerfaces as Potential Materials for Solar Cells, Energy Storage, and Hydrogen Evolution

“…Besides 2H MoS 2 phase, the other metastable 1T and 3R phases have also caused significant attention of scientific community due to their intriguing physical and chemical properties and have proved to be excellent material for energy‐conversion and energy‐storage applications . Detailed experimental investigations have been carried out since years to prepare these materials, the techniques include the alkali metal ion intercalation/exfoliation, hydrothermal method, argon plasma etching of high‐quality MoS 2, etc. The 1T polymorph has MoS 6 octahedral as a basic motif and doesn't exist naturally, it can be obtained by chemical processing of 2H phase which again undergoes irreversible transformation to the 2H phase at 95 °C .…”

“…It is predicted that such materials can exhibit a high surface‐to‐volume ratio, high chemical activity, high stability, low toxicity etc . The QCE exhibits the size‐dependent optoelectronic properties as a result, these may find potential applications in numerous areas such as bioimaging, sensors, photodetectors, photocatalysts, energy‐conversion/storage and high‐performance electronic devices etc . As an example, MoS 2 QDs with a lateral size of ≈2.1 nm shows a larger direct bandgap (3.96 eV) compared with a monolayer 2D sheet with bandgap 1.89 eV, which is quite a significant change .…”

Electrochemically Exfoliated WS2 Nanosheets for the Electrochemical Impedimetric Detection of NADH

“…The structure with more active site such as nanosheets and nanoflakes could be an ideal candidate for the sensing application. Till date, TMDs nanostructures have been prepared by various methods, including hydrothermal, mechanical exfoliation, chemical exfoliation, and electrochemical exfoliation [14–19] . Each method has their own advantages and limitations.…”