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Lattice -Mismatch-Induced Ultrastable 1T-Phase MoS2–Pd/Au for Plasmon-Enhanced Hydrogen Evolution
- Source :
- Nano Letters. 19:2758-2764
- Publication Year :
- 2019
- Publisher :
- American Chemical Society (ACS), 2019.
-
Abstract
- Metallic 1T-phase transition metal dichalcogenides (TMDs) are of considerable interest in enhancing catalytic applications due to their abundant active sites and good conductivity. However, the unstable nature of 1T-phase TMDs greatly impedes their practical applications. Herein, we developed a new approach for the synthesis of highly stable 1T-phase Au/Pd-MoS2 nanosheets (NSs) through a metal assembly induced ultrastable phase transition for achieving a very high electrocatalytic activity in the hydrogen evolution reaction. The phase transition was evoked by a novel mechanism of lattice-mismatch-induced strain based on density functional theory (DFT) calculations. Raman spectroscopy and transmission electron microscopy (TEM) were used to confirm the phase transition on experimental grounds. A novel heterostructured 1T MoS2–Au/Pd catalyst was designed and synthesized using this mechanism, and the catalyst exhibited a 0 mV onset potential in the hydrogen evolution reaction under light illumination. Therefo...
- Subjects :
- Phase transition
Materials science
Mechanical Engineering
Bioengineering
02 engineering and technology
General Chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
Catalysis
chemistry.chemical_compound
symbols.namesake
chemistry
Transition metal
Chemical physics
Phase (matter)
symbols
General Materials Science
Density functional theory
0210 nano-technology
Raman spectroscopy
Molybdenum disulfide
Plasmon
Subjects
Details
- ISSN :
- 15306992 and 15306984
- Volume :
- 19
- Database :
- OpenAIRE
- Journal :
- Nano Letters
- Accession number :
- edsair.doi...........5147994c5f700a85c36f2e76064d1f78