Full metadata record
DC Field | Value | Language |
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dc.contributor.author | Shin, Cheol-Hwan | - |
dc.contributor.author | Yu, Ted H. | - |
dc.contributor.author | Lee, Ha-Young | - |
dc.contributor.author | Lee, Byong-June | - |
dc.contributor.author | Kwon, Soonho | - |
dc.contributor.author | Goddard, William A. | - |
dc.contributor.author | Yu, Jong-Sung | - |
dc.date.accessioned | 2023-07-04T11:10:23Z | - |
dc.date.available | 2023-07-04T11:10:23Z | - |
dc.date.created | 2023-05-18 | - |
dc.date.issued | 2023-10 | - |
dc.identifier.issn | 0926-3373 | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11750/46079 | - |
dc.description.abstract | Herein, we report a novel methodology for preparation of new N-doped extensively graphitized porous carbon (N-GPC) as a new catalyst support for Ru nanoparticles (NPs) with dramatically improved hydrogen evolution reaction (HER) activity. Our method is remarkably simple: pyrolyzing g-C3N4 in the presence of Mg metal. Here, we show that Mg plays marvelous dual roles as a reducing agent to graphitize the g-C3N4 precursor at low temperature and as a precursor for Mg3N2, which generates network-structured porous carbon as a new porogen. This offers highly robust graphitized carbon with high electrical conductivity, network-structured high porosity, and proper N content, most desired as a catalyst support. As-prepared Ru/N-GPC catalyst shows a remarkably low overpotential of 9.6 mV (vs. RHE) at 10 mA/cm2, which is near ideal, providing 12 times faster hydrogen production rate than state-of-the-art Pt/C. We explain the atomistic basis for this low overpotential and superb stability via Grand canonical quantum mechanics calculations. These calculations show that pyrrolic-N in the support strengthens the coupling to the Ru NP while weakening the binding of H to Ru NP to accelerate the Tafel step. © 2023 Elsevier B.V. | - |
dc.language | English | - |
dc.publisher | Elsevier B.V. | - |
dc.title | Ru-loaded pyrrolic-N-doped extensively graphitized porous carbon for high performance electrochemical hydrogen evolution | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.apcatb.2023.122829 | - |
dc.identifier.wosid | 001053511400001 | - |
dc.identifier.scopusid | 2-s2.0-85156086684 | - |
dc.identifier.bibliographicCitation | Applied Catalysis B: Environmental, v.334 | - |
dc.description.isOpenAccess | FALSE | - |
dc.subject.keywordAuthor | Graphitized carbon | - |
dc.subject.keywordAuthor | Mg reduction | - |
dc.subject.keywordAuthor | Pyrrolic-N | - |
dc.subject.keywordAuthor | Hydrogen evolution | - |
dc.subject.keywordAuthor | Electrochemical water splitting | - |
dc.subject.keywordAuthor | Quantum mechanics calculation | - |
dc.subject.keywordPlus | RUTHENIUM-BASED CATALYST | - |
dc.subject.keywordPlus | MESOPOROUS MATERIALS | - |
dc.subject.keywordPlus | NITROGEN | - |
dc.subject.keywordPlus | ELECTROCATALYSTS | - |
dc.subject.keywordPlus | EFFICIENT | - |
dc.subject.keywordPlus | DESIGN | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | NITRIDE | - |
dc.subject.keywordPlus | SULFUR | - |
dc.citation.title | Applied Catalysis B: Environmental | - |
dc.citation.volume | 334 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry; Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Engineering, Environmental; Engineering, Chemical | - |
dc.type.docType | Article | - |
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