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DC Field | Value | Language |
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dc.citation.endPage | 10543 | - |
dc.citation.number | 21 | - |
dc.citation.startPage | 10537 | - |
dc.citation.title | JOURNAL OF MATERIALS CHEMISTRY A | - |
dc.citation.volume | 5 | - |
dc.contributor.author | Van Tam, Tran | - |
dc.contributor.author | Kang, Sung Gu | - |
dc.contributor.author | Babu, Kadumudi Firoz | - |
dc.contributor.author | Oh, Eun-Suok | - |
dc.contributor.author | Lee, Seung Geol | - |
dc.contributor.author | Choi, Won Mook | - |
dc.date.accessioned | 2024-03-26T13:35:13Z | - |
dc.date.available | 2024-03-26T13:35:13Z | - |
dc.date.created | 2024-03-26 | - |
dc.date.issued | 2017-06 | - |
dc.description.abstract | Boron-doped graphene quantum dots (BGQDs) have been synthesized by a one-step, facile and low temperature method through the hydrothermal treatment of glucose as the precursor in the presence of boric acid. The as-obtained BGQDs possess a high B-doping content up to 4.25% of uniform nm-size. Interestingly, the effect of different types of B-C bond species on the ORR catalytic activity has been investigated to clarify the origin of the electrochemical reduction of O-2. Further, the composite of the reduced graphene oxide (rGO) and BGQD (G-BGQDs) was also prepared as a metal-free electrocatalyst for the oxygen reduction reaction (ORR). The G-BGQD composites exhibit a significantly enhanced electrocatalytic activity, including a positive onset potential and a high current density with a one step, four-electron pathway toward the ORR, comparable to the commercial Pt/C catalyst. Among various B-C bond structures in BGQDs, the graphite-like BC3 structure is considered to be an important site for the ORR by improving the electric conductivity and electrocatalytic activity of BGQDs, which is also confirmed by a DFT study. In addition, the G-BGQD composites show an outstanding long-term operational stability and high tolerance to the methanol crossover effect, which are comparable to the commercial Pt/C catalyst. These results demnt electrocatalysts onstrate that the synthesized BGQD, as metal-free catalyst materials, may be inexpensive and efficiefor the replacement of Pt-based catalysts toward the ORR and other electrochemical applications. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MATERIALS CHEMISTRY A, v.5, no.21, pp.10537 - 10543 | - |
dc.identifier.doi | 10.1039/c7ta01485f | - |
dc.identifier.issn | 2050-7488 | - |
dc.identifier.scopusid | 2-s2.0-85021646810 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/81840 | - |
dc.identifier.wosid | 000402387900050 | - |
dc.language | 영어 | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.title | Synthesis of B-doped graphene quantum dots as a metal-free electrocatalyst for the oxygen reduction reaction | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical; Energy & Fuels; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Energy & Fuels; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordPlus | GENERALIZED GRADIENT APPROXIMATION | - |
dc.subject.keywordPlus | FREE CATALYSTS | - |
dc.subject.keywordPlus | CARBON | - |
dc.subject.keywordPlus | NANOPLATELETS | - |
dc.subject.keywordPlus | GENERATION | - |
dc.subject.keywordPlus | MOLECULES | - |
dc.subject.keywordPlus | ELECTRODE | - |
dc.subject.keywordPlus | SINGLE | - |
dc.subject.keywordPlus | OXIDE | - |
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