Abstract
Molybdenum disulfide (MoS2 ) nanosheet is a two-dimensional (2D) material with high electron mobility and with high potential for applications in catalysis and electronics. MoS2 nanosheets are synthesized using a one-pot wet-chemical synthesis route with and without Re doping. Atom probe tomography reveals that 3.8 at% Re is homogeneously distributed within the Re-doped sheets. Other impurities are also found integrated within the material: light elements including C, N, O, and Na, locally enriched up to 0.1 at%, as well as heavy elements such as V and W. Analysis of the nondoped sample reveals that the W and V likely originate from the Mo precursor. It is shown how wet-chemical synthesis results in an uncontrolled integration of species from the solution that can affect the material's activity. The results of this work are expected to contribute to an improved understanding of the relationships linking composition to properties of 2D transition-metal dichalcogenide materials.
Highlights
Control of the charge carrier concenand electronics
One of the problems that hinders relating performance and doping stems from the Molybdenum disulfide (MoS2) is a semiconducting material; unlike bulk MoS2 which has an indirect bandgap of 1.2 eV,[1] MoS2 prepared as a 2D material has a direct bandgap of 1.8 eV[2] paired with a high electron mobility.[3] 2D MoS2 shows advantageous properties for a wide array of applications in photo(electric)catalysis,[4,5] photoluminescence,[6] chemical challenge to measure the low-level concentration of p- or n-type dopants within 2D materials, which is necessary to understand their influence on the bandgap.[17]
Scanning electron microscopy images obtained from the surface of the Ni/rhenium doping of MoS2 (Re-MoS2) co-electroplated sample are displayed in Figure S2a,b (Supporting Information)
Summary
Control of the charge carrier concenand electronics. MoS2 nanosheets are synthesized using a one-pot wet-chemical synthesis route with and without Re doping. (S)TEM-EDS (see Figure S1a in the Supporting Information) shows that Mo, S, and Re are apparently rather homogeneously distributed within the 2D assembled nanosheets.
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
