Nitrogen-rich 1T-MoS2 layered nanostructures using alkyl amines for high catalytic performance toward hydrogen evolution
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kwak, In Hye | - |
dc.contributor.author | Kwon, Ik Seon | - |
dc.contributor.author | Abbas, Hafiz Ghulam | - |
dc.contributor.author | Jung, Gabin | - |
dc.contributor.author | Lee, Yeron | - |
dc.contributor.author | Debela, Tekalign Terfa | - |
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 | 2021-09-02T07:45:27Z | - |
dc.date.available | 2021-09-02T07:45:27Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-08-14 | - |
dc.identifier.issn | 2040-3364 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/73773 | - |
dc.description.abstract | The imminent global energy crisis and current environmental issues have stimulated considerable research on high-performance catalysts for sustainable hydrogen energy generation. Two-dimensional layered MoS2 has recently drawn worldwide attention because of its excellent catalytic properties for the hydrogen evolution reaction (HER). In the present work, we prepared nitrogen (N)-rich 1T (distorted 1T) phase MoS2 layered nanostructures using different alkyl amines with 1-4 nitrogen atoms (methylamine, ethylenediamine, diethylenetriamine, and triethylenetetramine) as intercalants. The amine molecules intercalate at 10 atomic%, and simultaneously supply the N atoms that substitute the S atoms to produce the N-doped MoS2, whose composition is MoS2(1-x)Nx, where x = 0.1-0.26. MoS2 prepared with amines having more N atoms has enhanced catalytic HER performance: a Tafel slope of 36 mV dec(-1) and 10 mA cm(-2) at -160 mV (vs. RHE). First-principles calculations showed that the amine intercalation and N doping increase the density of states near the Fermi level in a narrow range and bring about an effective overlap of the d(z)(2)(Mo), p(z)(S), and p(z)(N) states. These factors in turn increase the carrier (electron) concentration and mobility for improved HER. The calculation also predicted that the most active site is S vacancies. The present work illustrates how the HER catalytic performance of 1T phase MoS2 can be effectively controlled by the amine molecules. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | MOLYBDENUM-DISULFIDE | - |
dc.subject | MOS2 NANOSHEETS | - |
dc.subject | TRANSITION | - |
dc.subject | ELECTROCATALYSTS | - |
dc.subject | PLANE | - |
dc.subject | PHASE | - |
dc.subject | SITE | - |
dc.subject | MON | - |
dc.title | Nitrogen-rich 1T-MoS2 layered nanostructures using alkyl amines for high catalytic performance toward hydrogen evolution | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Park, Jeunghee | - |
dc.identifier.doi | 10.1039/c8nr03661f | - |
dc.identifier.scopusid | 2-s2.0-85050983201 | - |
dc.identifier.wosid | 000441583400037 | - |
dc.identifier.bibliographicCitation | NANOSCALE, v.10, no.30, pp.14726 - 14735 | - |
dc.relation.isPartOf | NANOSCALE | - |
dc.citation.title | NANOSCALE | - |
dc.citation.volume | 10 | - |
dc.citation.number | 30 | - |
dc.citation.startPage | 14726 | - |
dc.citation.endPage | 14735 | - |
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.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.subject.keywordPlus | MOLYBDENUM-DISULFIDE | - |
dc.subject.keywordPlus | MOS2 NANOSHEETS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | PLANE | - |
dc.subject.keywordPlus | PHASE | - |
dc.subject.keywordPlus | SITE | - |
dc.subject.keywordPlus | MON | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
(02841) 서울특별시 성북구 안암로 14502-3290-1114
COPYRIGHT © 2021 Korea University. All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.