Publication:
Advancing the understanding of the structure-activity-durability relation of 2D MoS2 for the hydrogen evolution reaction

dc.contributor.departmentDepartment of Chemistry
dc.contributor.departmentGraduate School of Sciences and Engineering
dc.contributor.departmentKUTEM (Koç University Tüpraş Energy Center)
dc.contributor.kuauthorKarakaya, Cüneyt
dc.contributor.kuauthorKaya, Sarp
dc.contributor.kuauthorSolati, Navid
dc.contributor.schoolcollegeinstituteCollege of Sciences
dc.contributor.schoolcollegeinstituteGRADUATE SCHOOL OF SCIENCES AND ENGINEERING
dc.contributor.schoolcollegeinstituteResearch Center
dc.date.accessioned2024-11-09T23:28:09Z
dc.description.abstractIt has been decades since electrochemical water splitting was proposed as a promising strategy for renewable hydrogen production. Transition-metal dichalcogenides offer cheap, earth-abundant catalyst candidates for the hydrogen evolution reaction (HER). Among those, molybdenum disulfide (MoS2) has been the subject of a vast number of studies, where different approaches such as manipulating the type and number of layers, or density of the intrinsic active sites, and engineering compositional phase and structure have been employed to enhance the electrochemical activity. Herein, we show the HER activities of twodimensional 1T-and 1H-MoS2 mixed phases with respect to the pure 1H-MoS2 scale with the 1T phase. The creation of S vacancies in 1H-MoS2 enhances HER activities. Further enhancement in the activity is achieved by N doping induced by N2 plasma exposure owing to the formation of a metallic 1T phase and S vacancies. The spectroelectrochemical Raman spectroscopy and ex-situ X-ray photoelectron spectroscopy investigations reveal a gradual phase conversion induced by H adsorption during electrochemical tests. The 1T to 1H phase transformation results in a significant loss in HER activity.
dc.description.indexedbyWOS
dc.description.indexedbyScopus
dc.description.openaccessNO
dc.description.sponsoredbyTubitakEuN/A
dc.identifier.doi10.1021/acscatal.2c03719
dc.identifier.issn2155-5435
dc.identifier.scopus2-s2.0-85144459495
dc.identifier.urihttps://doi.org/10.1021/acscatal.2c03719
dc.identifier.urihttps://hdl.handle.net/20.500.14288/11841
dc.identifier.wos913569700001
dc.keywordsMoS2
dc.keywordsHER
dc.keywords2D materials
dc.keywordsTransition-metal dichalcogenides
dc.keywordsPhase modifications
dc.language.isoeng
dc.publisherAmer Chemical Soc
dc.relation.ispartofAcs Catalysis
dc.subjectChemistry, physical and theoretical
dc.titleAdvancing the understanding of the structure-activity-durability relation of 2D MoS2 for the hydrogen evolution reaction
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorSolati, Navid
local.contributor.kuauthorKarakaya, Cüneyt
local.contributor.kuauthorKaya, Sarp
local.publication.orgunit1GRADUATE SCHOOL OF SCIENCES AND ENGINEERING
local.publication.orgunit1College of Sciences
local.publication.orgunit1Research Center
local.publication.orgunit2Department of Chemistry
local.publication.orgunit2KUTEM (Koç University Tüpraş Energy Center)
local.publication.orgunit2Graduate School of Sciences and Engineering
relation.isOrgUnitOfPublication035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isOrgUnitOfPublication3fc31c89-e803-4eb1-af6b-6258bc42c3d8
relation.isOrgUnitOfPublication6ce65247-25c7-415b-a771-a9f0249b3a40
relation.isOrgUnitOfPublication.latestForDiscovery035d8150-86c9-4107-af16-a6f0a4d538eb
relation.isParentOrgUnitOfPublicationaf0395b0-7219-4165-a909-7016fa30932d
relation.isParentOrgUnitOfPublication434c9663-2b11-4e66-9399-c863e2ebae43
relation.isParentOrgUnitOfPublicationd437580f-9309-4ecb-864a-4af58309d287
relation.isParentOrgUnitOfPublication.latestForDiscoveryaf0395b0-7219-4165-a909-7016fa30932d

Files