Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface

We provide a new insight that the sulphur-depleted MoS(2) surface can store hydrogen gas at room temperature. Our findings reveal that the sulphur-vacancy defects preferentially serve as active sites for both hydrogen chemisorption and physisorption. Unexpectedly the sulphur vacancy instantly dissoc...

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Autores principales: Han, Sang Wook, Cha, Gi-Beom, Park, Youngsin, Hong, S. C.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2017
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541097/
https://www.ncbi.nlm.nih.gov/pubmed/28769059
http://dx.doi.org/10.1038/s41598-017-07178-9
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author Han, Sang Wook
Cha, Gi-Beom
Park, Youngsin
Hong, S. C.
author_facet Han, Sang Wook
Cha, Gi-Beom
Park, Youngsin
Hong, S. C.
author_sort Han, Sang Wook
collection PubMed
description We provide a new insight that the sulphur-depleted MoS(2) surface can store hydrogen gas at room temperature. Our findings reveal that the sulphur-vacancy defects preferentially serve as active sites for both hydrogen chemisorption and physisorption. Unexpectedly the sulphur vacancy instantly dissociates the H(2) molecules and strongly binds the split hydrogen at the exposed Mo atoms. Thereon the additional H(2) molecule is adsorbed with enabling more hydrogen physisorption on the top sites around the sulphur vacancy. Furthermore, the increase of the sulphur vacancy on the MoS(2) surface further activates the dissociative hydrogen chemisorption than the H(2) physisorption.
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spelling pubmed-55410972017-08-07 Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface Han, Sang Wook Cha, Gi-Beom Park, Youngsin Hong, S. C. Sci Rep Article We provide a new insight that the sulphur-depleted MoS(2) surface can store hydrogen gas at room temperature. Our findings reveal that the sulphur-vacancy defects preferentially serve as active sites for both hydrogen chemisorption and physisorption. Unexpectedly the sulphur vacancy instantly dissociates the H(2) molecules and strongly binds the split hydrogen at the exposed Mo atoms. Thereon the additional H(2) molecule is adsorbed with enabling more hydrogen physisorption on the top sites around the sulphur vacancy. Furthermore, the increase of the sulphur vacancy on the MoS(2) surface further activates the dissociative hydrogen chemisorption than the H(2) physisorption. Nature Publishing Group UK 2017-08-02 /pmc/articles/PMC5541097/ /pubmed/28769059 http://dx.doi.org/10.1038/s41598-017-07178-9 Text en © The Author(s) 2017 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Han, Sang Wook
Cha, Gi-Beom
Park, Youngsin
Hong, S. C.
Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface
title Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface
title_full Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface
title_fullStr Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface
title_full_unstemmed Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface
title_short Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS(2) surface
title_sort hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of mos(2) surface
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5541097/
https://www.ncbi.nlm.nih.gov/pubmed/28769059
http://dx.doi.org/10.1038/s41598-017-07178-9
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