Phase-Transition Mo1-xVxSe2 Alloy Nanosheets with Rich V-Se Vacancies and Their Enhanced Catalytic Performance of Hydrogen Evolution Reaction
DC Field | Value | Language |
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dc.contributor.author | Kwon, Ik Seon | - |
dc.contributor.author | Kwak, In Hye | - |
dc.contributor.author | Debela, Tekalign Terfa | - |
dc.contributor.author | Kim, Ju Yeon | - |
dc.contributor.author | Yoo, Seung Jo | - |
dc.contributor.author | Kim, Jin-Gyu | - |
dc.contributor.author | Park, Jeunghee | - |
dc.contributor.author | Kang, Hong Seok | - |
dc.date.accessioned | 2022-02-19T01:40:58Z | - |
dc.date.available | 2022-02-19T01:40:58Z | - |
dc.date.created | 2022-02-08 | - |
dc.date.issued | 2021-09-28 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/136295 | - |
dc.description.abstract | Alloys of transition-metal dichalcogenide can display distinctive phase evolution because of their two-dimensional structures. Herein, we report the colloidal synthesis of Mo1-xVxSe2 alloy nanosheets with full composition tuning. Alloying led to a phase transition at x = 0.7 from the semiconducting 2H phase MoSe2 to the metallic 1T phase VSe2. It also produced significant V and Se vacancies, which became the richest in the 2H phase at x = 0.3-0.5. Extensive spin-polarized density functional theory calculations consistently predicted the 2H-1T phase transition at x = 0.7, in agreement with the experimental results. The vacancy formation energy also supports the formation of V and Se vacancies. Alloying in the 2H phase enhanced the electrocatalytic performance toward hydrogen evolution reaction (HER) at x = 0.3 (in 0.5 M H2SO4) or 0.4 (in 1 M KOH). The Gibbs free energy along the HER pathway indicates that this maximum performance is due to the highest concentration of active V and Se vacancy sites. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | ELECTROCHEMICAL H-2 EVOLUTION | - |
dc.subject | ACTIVE EDGE SITES | - |
dc.subject | METAL DICHALCOGENIDES | - |
dc.subject | MOS2 | - |
dc.subject | ELECTROCATALYSTS | - |
dc.subject | WS2(1-X)SE2X | - |
dc.subject | CRYSTALS | - |
dc.subject | GRAPHENE | - |
dc.subject | GROWTH | - |
dc.title | Phase-Transition Mo1-xVxSe2 Alloy Nanosheets with Rich V-Se Vacancies and Their Enhanced Catalytic Performance of Hydrogen Evolution Reaction | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kwon, Ik Seon | - |
dc.contributor.affiliatedAuthor | Kwak, In Hye | - |
dc.contributor.affiliatedAuthor | Park, Jeunghee | - |
dc.identifier.doi | 10.1021/acsnano.1c04453 | - |
dc.identifier.scopusid | 2-s2.0-85115652772 | - |
dc.identifier.wosid | 000703553600064 | - |
dc.identifier.bibliographicCitation | ACS NANO, v.15, no.9, pp.14672 - 14682 | - |
dc.relation.isPartOf | ACS NANO | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 15 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 14672 | - |
dc.citation.endPage | 14682 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | ACTIVE EDGE SITES | - |
dc.subject.keywordPlus | CRYSTALS | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | ELECTROCHEMICAL H-2 EVOLUTION | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | METAL DICHALCOGENIDES | - |
dc.subject.keywordPlus | MOS2 | - |
dc.subject.keywordPlus | WS2(1-X)SE2X | - |
dc.subject.keywordAuthor | (Mo,V)Se-2 alloy | - |
dc.subject.keywordAuthor | hydrogen evolution reaction | - |
dc.subject.keywordAuthor | phase transition | - |
dc.subject.keywordAuthor | spin-plarized density functional theory | - |
dc.subject.keywordAuthor | vacancies | - |
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