BROWSE

Related Scientist

Researcher

나노 구조 물리 연구단
나노구조물리 연구단
more info

A molecular approach to an electrocatalytic hydrogen evolution reaction on single-layer graphene

DC Field Value Language
dc.contributor.authorSohyeon Seo-
dc.contributor.authorKeunsik Lee-
dc.contributor.authorMisook Min-
dc.contributor.authorYunhee Cho-
dc.contributor.authorMeeree Kim-
dc.contributor.authorHyoyoung Lee-
dc.date.available2017-05-19T01:12:41Z-
dc.date.created2017-04-24-
dc.date.issued2017-03-
dc.identifier.issn2040-3364-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/3453-
dc.description.abstractA major challenge in the development of electrocatalysts is to determine a detailed catalysis mechanism on a molecular level for enhancing catalytic activity. Here, we present bottom-up studies for an electrocatalytic hydrogen evolution reaction (HER) process through molecular activation to systematically control surface catalytic activity corresponding to an interfacial charge transfer in a porphyrin monolayer on inactive graphene. The two-dimensional (2D) assembly of porphyrins that create homogeneous active sites (e.g., electronegative tetrapyrroles (N4)) on graphene showed structural stability against electrocatalytic reactions and enhanced charge transfer at the graphene-liquid interface. Performance operations of the graphene field effect transistor (FET) were an effective method to analyse the interfacial charge transfer process associated with information about the chemical nature of the catalytic components. Electronegative pristine porphyrin or Pt-porphyrin networks, where intermolecular hydrogen bonding functioned, showed larger interfacial charge transfers and higher HER performance than Ni-, or Zn-porphyrin. A process to create surface electronegativity by either central N-4 or metal (M)-N-4 played an important role in the electrocatalytic reaction. These findings will contribute to an in-depth understanding at the molecular level for the synergetic effects of molecular structures on the active sites of electrocatalysts toward HER-
dc.languageENG-
dc.publisherROYAL SOC CHEMISTRY-
dc.titleA molecular approach to an electrocatalytic hydrogen evolution reaction on single-layer graphene-
dc.typeArticle-
dc.type.rimsA-
dc.identifier.wosid000397126000032-
dc.identifier.scopusid2-s2.0-85015785103-
dc.description.wostc4-
dc.date.tcdate2018-10-01-
dc.date.scptcdate2018-10-01-
dc.contributor.affiliatedAuthorSohyeon Seo-
dc.contributor.affiliatedAuthorHyoyoung Lee-
dc.identifier.bibliographicCitationNANOSCALE, v.9, no.11, pp.3969 - 3979-
dc.description.scptc4-
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > Journal Papers (저널논문)
Files in This Item:
A molecular approach_So Hyeon Seo.pdfDownload

qrcode

  • facebook

    twitter

  • Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.
해당 아이템을 이메일로 공유하기 원하시면 인증을 거치시기 바랍니다.

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse