Activating basal-plane catalytic activity of two-dimensional MoS2 monolayer with remote hydrogen plasma

Handle URI:
http://hdl.handle.net/10754/622272
Title:
Activating basal-plane catalytic activity of two-dimensional MoS2 monolayer with remote hydrogen plasma
Authors:
Cheng, Chia-Chin; Lu, Ang-Yu; Tseng, Chien-Chih ( 0000-0003-0676-5664 ) ; Yang, Xiulin ( 0000-0003-2642-4963 ) ; Hedhili, Mohamed N. ( 0000-0002-3624-036X ) ; Chen, Min-Cheng; Wei, Kung-Hwa; Li, Lain-Jong ( 0000-0002-4059-7783 )
Abstract:
Two-dimensional layered transition metal dichalcogenide (TMD) materials such as Molybdenum disufide (MoS2) have been recognized as one of the low-cost and efficient electrocatalysts for hydrogen evolution reaction (HER). The crystal edges that account for a small percentage of the surface area, rather than the basal planes, of MoS2 monolayer have been confirmed as their active catalytic sites. As a result, extensive efforts have been developing in activating the basal planes of MoS2 for enhancing their HER activity. Here, we report a simple and efficient approach-using a remote hydrogen-plasma process-to creating S-vacancies on the basal plane of monolayer crystalline MoS2; this process can generate high density of S-vacancies while mainly maintaining the morphology and structure of MoS2 monolayer. The density of S-vacancies (defects) on MoS2 monolayers resulted from the remote hydrogen-plasma process can be tuned and play a critical role in HER, as evidenced in the results of our spectroscopic and electrical measurements. The H2-plasma treated MoS2 also provides an excellent platform for systematic and fundamental study of defect-property relationships in TMDs, which provides insights for future applications including electrical, optical and magnetic devices. © 2016 Elsevier Ltd.
KAUST Department:
Physical Sciences and Engineering (PSE) Division
Citation:
Cheng C-C, Lu A-Y, Tseng C-C, Yang X, Hedhili MN, et al. (2016) Activating basal-plane catalytic activity of two-dimensional MoS2 monolayer with remote hydrogen plasma. Nano Energy 30: 846–852. Available: http://dx.doi.org/10.1016/j.nanoen.2016.09.010.
Publisher:
Elsevier BV
Journal:
Nano Energy
Issue Date:
10-Sep-2016
DOI:
10.1016/j.nanoen.2016.09.010
Type:
Article
ISSN:
2211-2855
Additional Links:
http://www.sciencedirect.com/science/article/pii/S2211285516303731
Appears in Collections:
Articles; Physical Sciences and Engineering (PSE) Division

Full metadata record

DC FieldValue Language
dc.contributor.authorCheng, Chia-Chinen
dc.contributor.authorLu, Ang-Yuen
dc.contributor.authorTseng, Chien-Chihen
dc.contributor.authorYang, Xiulinen
dc.contributor.authorHedhili, Mohamed N.en
dc.contributor.authorChen, Min-Chengen
dc.contributor.authorWei, Kung-Hwaen
dc.contributor.authorLi, Lain-Jongen
dc.date.accessioned2017-01-02T09:08:23Z-
dc.date.available2017-01-02T09:08:23Z-
dc.date.issued2016-09-10en
dc.identifier.citationCheng C-C, Lu A-Y, Tseng C-C, Yang X, Hedhili MN, et al. (2016) Activating basal-plane catalytic activity of two-dimensional MoS2 monolayer with remote hydrogen plasma. Nano Energy 30: 846–852. Available: http://dx.doi.org/10.1016/j.nanoen.2016.09.010.en
dc.identifier.issn2211-2855en
dc.identifier.doi10.1016/j.nanoen.2016.09.010en
dc.identifier.urihttp://hdl.handle.net/10754/622272-
dc.description.abstractTwo-dimensional layered transition metal dichalcogenide (TMD) materials such as Molybdenum disufide (MoS2) have been recognized as one of the low-cost and efficient electrocatalysts for hydrogen evolution reaction (HER). The crystal edges that account for a small percentage of the surface area, rather than the basal planes, of MoS2 monolayer have been confirmed as their active catalytic sites. As a result, extensive efforts have been developing in activating the basal planes of MoS2 for enhancing their HER activity. Here, we report a simple and efficient approach-using a remote hydrogen-plasma process-to creating S-vacancies on the basal plane of monolayer crystalline MoS2; this process can generate high density of S-vacancies while mainly maintaining the morphology and structure of MoS2 monolayer. The density of S-vacancies (defects) on MoS2 monolayers resulted from the remote hydrogen-plasma process can be tuned and play a critical role in HER, as evidenced in the results of our spectroscopic and electrical measurements. The H2-plasma treated MoS2 also provides an excellent platform for systematic and fundamental study of defect-property relationships in TMDs, which provides insights for future applications including electrical, optical and magnetic devices. © 2016 Elsevier Ltd.en
dc.publisherElsevier BVen
dc.relation.urlhttp://www.sciencedirect.com/science/article/pii/S2211285516303731en
dc.subjectCatalysisen
dc.subjectElectrolysisen
dc.subjectHydrogen evolution reactionen
dc.subjectMoS2en
dc.subjectTransition metal dichalcogenidesen
dc.titleActivating basal-plane catalytic activity of two-dimensional MoS2 monolayer with remote hydrogen plasmaen
dc.typeArticleen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.identifier.journalNano Energyen
dc.contributor.institutionDepartment of Material Science and Engineering, National Chiao Tung University, Hsinchu 300, Taiwanen
dc.contributor.institutionNational Nano Device Laboratories, National Applied Research Laboratories, Hsinchu 300, Taiwanen
kaust.authorLu, Ang-Yuen
kaust.authorTseng, Chien-Chihen
kaust.authorYang, Xiulinen
kaust.authorHedhili, Mohamed N.en
kaust.authorLi, Lain-Jongen
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