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Hierarchically Ordinated Two-Dimensional MoS2 Nanosheets on Three-Dimensional Reduced Graphene Oxide Aerogels as Highly Active and Stable Catalysts for Hydrogen Evolution Reaction
- Source :
- Catalysts, Volume 11, Issue 2, Catalysts, Vol 11, Iss 182, p 182 (2021)
- Publication Year :
- 2021
- Publisher :
- Multidisciplinary Digital Publishing Institute, 2021.
-
Abstract
- Hydrogen gas (H2) is being intensively proposed as a next-generation clean energy owing to the depletion of fossil fuels. Electrochemical water splitting is one of the most promising processes for hydrogen production. Furthermore, many efforts focusing on electrochemical water splitting have been made to develop low-cost, electrochemically active, and stable catalysts for efficient hydrogen production. MoS2 has emerged as an attractive material for developing catalysts for the hydrogen evolution reaction (HER). Hence, in this study, we design hierarchically ordinated two-dimensional (2D) MoS2 nanosheets on three-dimensional (3D) reduced graphene oxide (rGO) (H-2D/3D-MoS2-rGO) aerogel structures as a new class of electrocatalysts for the HER. We use the one-pot hydrothermal synthesis route for developing high-performance electroactive materials for the HER. The as-prepared H-2D/3D-MoS2-rGO contains a unique 3D hierarchical structure providing large surface areas owing to the 3D porous networks of rGO and more active sites owing to the many edge sites in the MoS2 nanosheets. In addition, the H-2D/3D-MoS2-rGO structure exhibits remarkable electrochemical properties during the HER. It shows a lower overpotential than pure MoS2 and excellent electrochemical stability owing to the large number of active sites (highly exposed edge sites) and high electrical conductivity from the rGO structure.
- Subjects :
- Materials science
Hydrogen
Oxide
chemistry.chemical_element
02 engineering and technology
Overpotential
lcsh:Chemical technology
010402 general chemistry
01 natural sciences
reduced graphene oxide
electrocatalysts
Catalysis
law.invention
lcsh:Chemistry
chemistry.chemical_compound
law
lcsh:TP1-1185
molybdenum disulfide
Physical and Theoretical Chemistry
Hydrogen production
Graphene
Aerogel
021001 nanoscience & nanotechnology
0104 chemical sciences
hydrogen evolution reaction
lcsh:QD1-999
chemistry
Chemical engineering
3D networks
Water splitting
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 20734344
- Database :
- OpenAIRE
- Journal :
- Catalysts
- Accession number :
- edsair.doi.dedup.....45ab66b0b8532c436a4aa9c6e0a6fe3e
- Full Text :
- https://doi.org/10.3390/catal11020182