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  Weyl Semimetals as Hydrogen Evolution Catalysts

Rajamathi, C. R., Gupta, U., Kumar, N., Yang, H., Sun, Y., Süß, V., et al. (2017). Weyl Semimetals as Hydrogen Evolution Catalysts. Advanced Materials, 29(19): 1606202, pp. 1-6. doi:10.1002/adma.201606202.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-D609-D Version Permalink: http://hdl.handle.net/21.11116/0000-0001-08EF-A
Genre: Journal Article

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 Creators:
Rajamathi, Catherine R.1, Author              
Gupta, Uttam2, Author
Kumar, Nitesh1, Author              
Yang, Hao2, Author
Sun, Yan1, Author              
Süß, Vicky1, Author              
Shekhar, C.3, Author              
Schmidt, Marcus4, Author              
Blumtritt, Horst2, Author
Werner, Peter2, Author
Yan, Binghai5, Author              
Parkin, Stuart2, Author
Felser, Claudia6, Author              
Rao, C. N. R.2, Author
Affiliations:
1Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
2External Organizations, ou_persistent22              
3Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863428              
4Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863415              
5Binghai Yan, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863427              
6Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863429              

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Free keywords: topological materials, Weyl semimetals, hydrogen evolution reactions, catalysts
 Abstract: The search for highly efficient and low-cost catalysts is one of the main driving forces in catalytic chemistry. Current strategies for the catalyst design focus on increasing the number and activity of local catalytic sites, such as the edge sites of molybdenum disulfides in the hydrogen evolution reaction (HER). Here, the study proposes and demonstrates a different principle that goes beyond local site optimization by utilizing topological electronic states to spur catalytic activity. For HER, excellent catalysts have been found among the transition-metal monopnictides—NbP, TaP, NbAs, and TaAs—which are recently discovered to be topological Weyl semimetals. Here the study shows that the combination of robust topological surface states and large room temperature carrier mobility, both of which originate from bulk Dirac bands of the Weyl semimetal, is a recipe for high activity HER catalysts. This approach has the potential to go beyond graphene based composite photocatalysts where graphene simply provides a high mobility medium without any active catalytic sites that have been found in these topological materials. Thus, the work provides a guiding principle for the discovery of novel catalysts from the emerging field of topological materials.

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Language(s): eng - English
 Dates: 2017-03-242017-03-24
 Publication Status: Published in print
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: DOI: 10.1002/adma.201606202
 Degree: -

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Title: Advanced Materials
  Other : Adv. Mater.
Source Genre: Journal
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Publ. Info: Weinheim : Wiley-VCH
Pages: - Volume / Issue: 29 (19) Sequence Number: 1606202 Start / End Page: 1 - 6 Identifier: ISSN: 0935-9648
CoNE: /journals/resource/954925570855