Enhancement of quaternary nitrogen doping of graphene oxide via chemical reduction prior to thermal annealing and an investigation of its electrochemical properties
DC Field | Value | Language |
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dc.contributor.author | Huan, Tran Ngoc | - |
dc.contributor.author | Khai, Tran Van | - |
dc.contributor.author | Kang, Youngjong | - |
dc.contributor.author | Shim, Kwang Bo | - |
dc.contributor.author | Chung, Hoeil | - |
dc.date.accessioned | 2022-07-16T14:21:14Z | - |
dc.date.available | 2022-07-16T14:21:14Z | - |
dc.date.created | 2021-05-12 | - |
dc.date.issued | 2012-08 | - |
dc.identifier.issn | 0959-9428 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/164959 | - |
dc.description.abstract | A simple and efficient method to enhance the quaternary nitrogen doping (N-doping) of graphene has been demonstrated. Recent studies have shown that quaternary N in the graphene network provides more efficient electrocatalytic activity. Therefore, a novel strategy to enhance the quaternary N-doping is currently in high demand. The strategy employed in this work was to modify graphene oxide (GO) prior to thermal annealing so as to provide a more efficient structure for quaternary N doping. GO was first chemically reduced with hydrazine to substantially increase the formation of C = C bonds and simultaneously decrease the atomic oxygen concentration. The reduced graphene oxide (RGO) was then annealed in the presence of NH3. Although N-doping via the replacement of oxygen is preferred, the probability of carbon being substituted with N dopants in the graphitic structure of RGO could increase due to the relatively higher content of C = C when compared to the atomic oxygen concentration. In addition, due to the decreased atomic oxygen concentration, the electro-conductivity was enhanced. Cyclic voltammograms (CVs) of 5 mM K3Fe(CN)(6) and 2 mM H2O2 were used to examine the electrochemical response of the quaternary N-maximized RGO. An improvement in electrocatalytic reduction and a higher electro-conductivity were confirmed based on an analysis of the obtained CVs. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Enhancement of quaternary nitrogen doping of graphene oxide via chemical reduction prior to thermal annealing and an investigation of its electrochemical properties | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Kang, Youngjong | - |
dc.contributor.affiliatedAuthor | Chung, Hoeil | - |
dc.identifier.doi | 10.1039/c2jm31158e | - |
dc.identifier.scopusid | 2-s2.0-84863666881 | - |
dc.identifier.wosid | 000305966200061 | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY, v.22, no.29, pp.14756 - 14762 | - |
dc.relation.isPartOf | JOURNAL OF MATERIALS CHEMISTRY | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY | - |
dc.citation.volume | 22 | - |
dc.citation.number | 29 | - |
dc.citation.startPage | 14756 | - |
dc.citation.endPage | 14762 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | DOPED GRAPHENE | - |
dc.subject.keywordPlus | CATALYSTS | - |
dc.subject.keywordPlus | GROWTH | - |
dc.identifier.url | https://pubs.rsc.org/en/content/articlelanding/2012/JM/c2jm31158e | - |
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