Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 강영종 | - |
dc.date.accessioned | 2018-03-30T07:05:15Z | - |
dc.date.available | 2018-03-30T07:05:15Z | - |
dc.date.issued | 2012-12 | - |
dc.identifier.citation | JOURNAL OF MATERIALS CHEMISTRY,V.22 N.29, p14756-p14762, 7p. | en_US |
dc.identifier.issn | 0959-9428 | - |
dc.identifier.issn | 1364-5501 | - |
dc.identifier.uri | http://pubs.rsc.org/en/content/articlelanding/2012/jm/c2jm31158e/unauth#!divAbstract | - |
dc.identifier.uri | http://hdl.handle.net/20.500.11754/54405 | - |
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. | en_US |
dc.description.sponsorship | This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology(2012R1A1B3003965). | en_US |
dc.language.iso | en | en_US |
dc.publisher | ROYAL SOC CHEMISTRY | en_US |
dc.title | Enhancement of quaternary nitrogen doping of graphene oxide via chemical reduction prior to thermal annealing and an investigation of its electrochemical properties | en_US |
dc.type | Article | en_US |
dc.relation.no | 29 | - |
dc.relation.volume | 22 | - |
dc.identifier.doi | 10.1039/C2JM31158E | - |
dc.relation.page | 14756-14762 | - |
dc.relation.journal | JOURNAL OF MATERIALS CHEMISTRY | - |
dc.contributor.googleauthor | Huan, Tran Ngoc | - |
dc.contributor.googleauthor | Khai, Tran Van | - |
dc.contributor.googleauthor | Kang, Youngjong | - |
dc.contributor.googleauthor | Shim, Kwang Bo | - |
dc.contributor.googleauthor | Chung, Hoeil | - |
dc.relation.code | 2012205376 | - |
dc.sector.campus | S | - |
dc.sector.daehak | COLLEGE OF NATURAL SCIENCES[S] | - |
dc.sector.department | DEPARTMENT OF CHEMISTRY | - |
dc.identifier.pid | youngjkang | - |
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