Se-Rich MoSe2 Nanosheets and Their Superior Electrocatalytic Performance for 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 | Abbas, Hafiz Ghulam | - |
dc.contributor.author | Park, Yun Chang | - |
dc.contributor.author | Ahn, Jae-pyoung | - |
dc.contributor.author | Park, Jeunghee | - |
dc.contributor.author | Kang, Hong Seok | - |
dc.date.accessioned | 2021-08-30T23:14:42Z | - |
dc.date.available | 2021-08-30T23:14:42Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2020-05-26 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/55635 | - |
dc.description.abstract | Two-dimensional MoSe2 has emerged as a promising electrocatalyst for the hydrogen evolution reaction (HER), although its catalytic activity needs to be further improved. Herein, we report Serich MoSe2 nanosheets synthesized using a hydrothermal reaction, displaying much enhanced HER performance at the Se/Mo ratio of 2.3. The transition from the 2H to the 1T' phase occurred as Se/Mo exceeded 2. Structural analysis revealed the presence of Se adatoms as well as the formation of Se-Se bonding. Based on first-principles calculations, we propose two equally stable Se-rich structures. In the first one, excess Se atoms bridge two MoSe2 layers via the interlayer Se-Se bonds. In the second one, the Se atoms substitute for the Mo atoms, and extra Se atoms are added closest to the Mo-substituted Se. Calculation of Gibbs free energy along the reaction path indicates that the Se adatoms of the second model are the most active sites for HER. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | TOTAL-ENERGY CALCULATIONS | - |
dc.subject | ACTIVE EDGE SITES | - |
dc.subject | CATALYTIC-ACTIVITY | - |
dc.subject | 1T PHASE | - |
dc.subject | EFFICIENT | - |
dc.subject | TRANSITION | - |
dc.subject | IDENTIFICATION | - |
dc.subject | MODULATION | - |
dc.subject | MONOLAYERS | - |
dc.subject | DEFECTS | - |
dc.title | Se-Rich MoSe2 Nanosheets and Their Superior Electrocatalytic Performance for Hydrogen Evolution Reaction | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Jeunghee | - |
dc.identifier.doi | 10.1021/acsnano.0c02593 | - |
dc.identifier.scopusid | 2-s2.0-85085536731 | - |
dc.identifier.wosid | 000537682300112 | - |
dc.identifier.bibliographicCitation | ACS NANO, v.14, no.5, pp.6295 - 6304 | - |
dc.relation.isPartOf | ACS NANO | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 14 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 6295 | - |
dc.citation.endPage | 6304 | - |
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 | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | ACTIVE EDGE SITES | - |
dc.subject.keywordPlus | CATALYTIC-ACTIVITY | - |
dc.subject.keywordPlus | 1T PHASE | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | IDENTIFICATION | - |
dc.subject.keywordPlus | MODULATION | - |
dc.subject.keywordPlus | MONOLAYERS | - |
dc.subject.keywordPlus | DEFECTS | - |
dc.subject.keywordAuthor | MoSe2 | - |
dc.subject.keywordAuthor | phase transition | - |
dc.subject.keywordAuthor | enriched Se | - |
dc.subject.keywordAuthor | first-principles calculation | - |
dc.subject.keywordAuthor | hydrogen evolution | - |
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