Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production

Layered molybdenum disulfide has demonstrated great promise as a low-cost alternative to platinum-based catalysts for electrochemical hydrogen production from water. Research effort on this material has focused mainly on synthesizing highly nanostructured molybdenum disulfide that allows the exposur...

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Main Authors:	Gao, Min-Rui, Chan, Maria K.Y., Sun, Yugang
Format:	Online
Language:	English
Published:	Nature Pub. Group 2015
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4507019/

id	pubmed-4507019
recordtype	oai_dc
spelling	pubmed-45070192015-07-21 Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production Gao, Min-Rui Chan, Maria K.Y. Sun, Yugang Article Layered molybdenum disulfide has demonstrated great promise as a low-cost alternative to platinum-based catalysts for electrochemical hydrogen production from water. Research effort on this material has focused mainly on synthesizing highly nanostructured molybdenum disulfide that allows the exposure of a large fraction of active edge sites. Here we report a promising microwave-assisted strategy for the synthesis of narrow molybdenum disulfide nanosheets with edge-terminated structure and a significantly expanded interlayer spacing, which exhibit striking kinetic metrics with onset potential of −103 mV, Tafel slope of 49 mV per decade and exchange current density of 9.62 × 10−3 mA cm−2, performing among the best of current molybdenum disulfide catalysts. Besides benefits from the edge-terminated structure, the expanded interlayer distance with modified electronic structure is also responsible for the observed catalytic improvement, which suggests a potential way to design newly advanced molybdenum disulfide catalysts through modulating the interlayer distance. Nature Pub. Group 2015-07-03 /pmc/articles/PMC4507019/ /pubmed/26138031 http://dx.doi.org/10.1038/ncomms8493 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by-nc-nd/4.0/ This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-nd/4.0/
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Gao, Min-Rui Chan, Maria K.Y. Sun, Yugang
spellingShingle	Gao, Min-Rui Chan, Maria K.Y. Sun, Yugang Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production
author_facet	Gao, Min-Rui Chan, Maria K.Y. Sun, Yugang
author_sort	Gao, Min-Rui
title	Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production
title_short	Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production
title_full	Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production
title_fullStr	Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production
title_full_unstemmed	Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production
title_sort	edge-terminated molybdenum disulfide with a 9.4-å interlayer spacing for electrochemical hydrogen production
description	Layered molybdenum disulfide has demonstrated great promise as a low-cost alternative to platinum-based catalysts for electrochemical hydrogen production from water. Research effort on this material has focused mainly on synthesizing highly nanostructured molybdenum disulfide that allows the exposure of a large fraction of active edge sites. Here we report a promising microwave-assisted strategy for the synthesis of narrow molybdenum disulfide nanosheets with edge-terminated structure and a significantly expanded interlayer spacing, which exhibit striking kinetic metrics with onset potential of −103 mV, Tafel slope of 49 mV per decade and exchange current density of 9.62 × 10−3 mA cm−2, performing among the best of current molybdenum disulfide catalysts. Besides benefits from the edge-terminated structure, the expanded interlayer distance with modified electronic structure is also responsible for the observed catalytic improvement, which suggests a potential way to design newly advanced molybdenum disulfide catalysts through modulating the interlayer distance.
publisher	Nature Pub. Group
publishDate	2015
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4507019/
_version_	1613249372237070336

Edge-terminated molybdenum disulfide with a 9.4-Å interlayer spacing for electrochemical hydrogen production

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