Journal article
Biomimetic hydrogen evolution: MoS2 Nanoparticles as Catalyst for Hydrogen Evolution
Department of Physics, Technical University of Denmark1
Surface Physics and Catalysis, Department of Physics, Technical University of Denmark2
Computational Atomic-scale Materials Design, Department of Physics, Technical University of Denmark3
Center for Individual Nanoparticle Functionality, Centers, Technical University of Denmark4
Center for Nanoteknologi, Centers, Technical University of Denmark5
The electrochemical hydrogen evolution reaction is catalyzed most effectively by the Pt group metals. As H2 is considered as a future energy carrier, the need for these catalysts will increase and alternatives to the scarce and expensive Pt group catalysts will be needed. We analyze the ability of different metal surfaces and of the enzymes nitrogenase and hydrogenase to catalyze the hydrogen evolution reaction and find a necessary criterion for high catalytic activity.
The necessary criterion is that the binding free energy of atomic hydrogen to the catalyst is close to zero. The criterion enables us to search for new catalysts, and inspired by the nitrogenase active site, we find that MoS2 nanoparticles supported on graphite are a promising catalyst. They catalyze electrochemical hydrogen evolution at a moderate overpotential of 0.1-0.2 V.
Language: | English |
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Year: | 2005 |
Pages: | 5308-5309 |
ISSN: | 15205126 and 00027863 |
Types: | Journal article |
DOI: | 10.1021/ja0504690 |
ORCIDs: | Nielsen, Jane Hvolbæk , Horch, Sebastian , Chorkendorff, Ib and Nørskov, Jens Kehlet |