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Atomically engineering activation sites onto metallic 1T-MoS
- Source :
- Nature Communications, Nature Communications, Vol 10, Iss 1, Pp 1-11 (2019)
- Publication Year :
- 2018
-
Abstract
- Engineering catalytic sites at the atomic level provides an opportunity to understand the catalyst’s active sites, which is vital to the development of improved catalysts. Here we show a reliable and tunable polyoxometalate template-based synthetic strategy to atomically engineer metal doping sites onto metallic 1T-MoS2, using Anderson-type polyoxometalates as precursors. Benefiting from engineering nickel and oxygen atoms, the optimized electrocatalyst shows great enhancement in the hydrogen evolution reaction with a positive onset potential of ~ 0 V and a low overpotential of −46 mV in alkaline electrolyte, comparable to platinum-based catalysts. First-principles calculations reveal co-doping nickel and oxygen into 1T-MoS2 assists the process of water dissociation and hydrogen generation from their intermediate states. This research will expand on the ability to improve the activities of various catalysts by precisely engineering atomic activation sites to achieve significant electronic modulations and improve atomic utilization efficiencies.<br />While heterogeneous catalysts can act as tangible, efficient materials for energy conversion, understanding the active catalytic sites is challenging. Here, authors engineer specific catalytic sites into molybdenum sulfide to improve and elucidate hydrogen evolution electrocatalysis.
- Subjects :
- 0301 basic medicine
inorganic chemicals
Materials science
Catalyst synthesis
Science
General Physics and Astronomy
chemistry.chemical_element
02 engineering and technology
Overpotential
Electrochemistry
Electrocatalyst
Two-dimensional materials
7. Clean energy
General Biochemistry, Genetics and Molecular Biology
Article
Catalysis
03 medical and health sciences
lcsh:Science
Hydrogen production
Multidisciplinary
General Chemistry
021001 nanoscience & nanotechnology
Publisher Correction
Nickel
Hydrogen fuel
030104 developmental biology
chemistry
Chemical engineering
Polyoxometalate
lcsh:Q
0210 nano-technology
Platinum
Electrocatalysis
Subjects
Details
- ISSN :
- 20411723
- Volume :
- 10
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Nature communications
- Accession number :
- edsair.doi.dedup.....14605ae5b2f257352931c95eac643ccc