Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface

Abstract We provide a new insight that the sulphur-depleted MoS2 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...

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Autores principales:	Sang Wook Han, Gi-Beom Cha, Youngsin Park, S. C. Hong
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2017
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/9309caa52db1448494c9cbc9c3c2643f
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spelling	oai:doaj.org-article:9309caa52db1448494c9cbc9c3c2643f2021-12-02T12:30:52ZHydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface10.1038/s41598-017-07178-92045-2322https://doaj.org/article/9309caa52db1448494c9cbc9c3c2643f2017-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-017-07178-9https://doaj.org/toc/2045-2322Abstract We provide a new insight that the sulphur-depleted MoS2 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 H2 molecules and strongly binds the split hydrogen at the exposed Mo atoms. Thereon the additional H2 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 MoS2 surface further activates the dissociative hydrogen chemisorption than the H2 physisorption.Sang Wook HanGi-Beom ChaYoungsin ParkS. C. HongNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 7, Iss 1, Pp 1-7 (2017)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Sang Wook Han Gi-Beom Cha Youngsin Park S. C. Hong Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface
description	Abstract We provide a new insight that the sulphur-depleted MoS2 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 H2 molecules and strongly binds the split hydrogen at the exposed Mo atoms. Thereon the additional H2 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 MoS2 surface further activates the dissociative hydrogen chemisorption than the H2 physisorption.
format	article
author	Sang Wook Han Gi-Beom Cha Youngsin Park S. C. Hong
author_facet	Sang Wook Han Gi-Beom Cha Youngsin Park S. C. Hong
author_sort	Sang Wook Han
title	Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface
title_short	Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface
title_full	Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface
title_fullStr	Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface
title_full_unstemmed	Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface
title_sort	hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of mos2 surface
publisher	Nature Portfolio
publishDate	2017
url	https://doaj.org/article/9309caa52db1448494c9cbc9c3c2643f
work_keys_str_mv	AT sangwookhan hydrogenphysisorptionbasedonthedissociativehydrogenchemisorptionatthesulphurvacancyofmos2surface AT gibeomcha hydrogenphysisorptionbasedonthedissociativehydrogenchemisorptionatthesulphurvacancyofmos2surface AT youngsinpark hydrogenphysisorptionbasedonthedissociativehydrogenchemisorptionatthesulphurvacancyofmos2surface AT schong hydrogenphysisorptionbasedonthedissociativehydrogenchemisorptionatthesulphurvacancyofmos2surface
_version_	1718394292790099968

Hydrogen physisorption based on the dissociative hydrogen chemisorption at the sulphur vacancy of MoS2 surface

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