DC Field | Value | Language |
---|---|---|
dc.contributor.author | Han, Seung Won | ko |
dc.contributor.author | Bang, Jisuk | ko |
dc.contributor.author | Ko, Seung Hyeon | ko |
dc.contributor.author | Ryoo, Ryong | ko |
dc.date.accessioned | 2019-05-02T03:10:08Z | - |
dc.date.available | 2019-05-02T03:10:08Z | - |
dc.date.created | 2019-04-29 | - |
dc.date.created | 2019-04-29 | - |
dc.date.issued | 2019-04 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY A, v.7, no.14, pp.8353 - 8360 | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.uri | http://hdl.handle.net/10203/261719 | - |
dc.description.abstract | Nitrogen-doped microporous carbons with various compositions of pyridinic, pyrrolic, and graphitic N species were synthesized by the pyrolysis of pyrrole using Ca2+ ion-exchanged Y zeolite as a template. The Ca2+ ions in zeolite pores served as a catalyst to lower the carbonization temperature, resolving the problems associated with high carbonization temperature, such as inhomogeneous carbon deposition, easy breakage of weak C-N bonds, and preferential formation of thermodynamically stable graphitic N species. The resultant carbons exhibited a 3D microporous structure with high surface area and uniform micropore diameters, as well as high N content (5-6 wt%). Taking advantage of the lowered carbonization temperature, the ratio of the N species was modulated by the carbonization temperature, while a similar pore structure of the carbons was maintained. These N-doped carbons were used to investigate the efficiency of each N species on the electrochemical oxygen reduction, without the influences from the porous structure of the carbons. The results of this electrochemical investigation indicate that the graphitic N was more effective in enhancing the oxygen-reduction performance of the 3D microporous carbons than pyridinic N. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Variation of nitrogen species in zeolite-templated carbon by low-temperature carbonization of pyrrole and the effect on oxygen reduction activity | - |
dc.type | Article | - |
dc.identifier.wosid | 000464414200035 | - |
dc.identifier.scopusid | 2-s2.0-85063930971 | - |
dc.type.rims | ART | - |
dc.citation.volume | 7 | - |
dc.citation.issue | 14 | - |
dc.citation.beginningpage | 8353 | - |
dc.citation.endingpage | 8360 | - |
dc.citation.publicationname | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.identifier.doi | 10.1039/c9ta01621j | - |
dc.contributor.localauthor | Ryoo, Ryong | - |
dc.contributor.nonIdAuthor | Ko, Seung Hyeon | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | METAL-FREE ELECTROCATALYSTS | - |
dc.subject.keywordPlus | DOPED GRAPHENE | - |
dc.subject.keywordPlus | POROUS CARBON | - |
dc.subject.keywordPlus | MESOPOROUS CARBON | - |
dc.subject.keywordPlus | NANOPOROUS CARBON | - |
dc.subject.keywordPlus | RECENT PROGRESS | - |
dc.subject.keywordPlus | SITES | - |
dc.subject.keywordPlus | TRANSFORMATION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | CATALYSTS | - |
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