DC Field | Value | Language |
---|---|---|
dc.contributor.author | Song, Cheol-Ock | ko |
dc.contributor.author | Lee, Jung-Woo | ko |
dc.contributor.author | Choi, Hwa-Seob | ko |
dc.contributor.author | Kang, Jeung-Ku | ko |
dc.date.accessioned | 2014-08-26T07:37:07Z | - |
dc.date.available | 2014-08-26T07:37:07Z | - |
dc.date.created | 2013-12-12 | - |
dc.date.created | 2013-12-12 | - |
dc.date.issued | 2013 | - |
dc.identifier.citation | RSC ADVANCES, v.3, no.43, pp.20179 - 20185 | - |
dc.identifier.issn | 2046-2069 | - |
dc.identifier.uri | http://hdl.handle.net/10203/187061 | - |
dc.description.abstract | We report a two-step synthesis method to fabricate peroxidase-like Co3O4 nanoparticles-carbon nitride nanotube (Co3O4 NPs-CNNT) hybrid catalysts enabling a high redox activity. At first, the energy-dispersive spectrometer mapping shows that the CNNT surface is wrapped by the Co(OH)(2) after the first solvothermal step using cobalt acetylacetonate of Co(acac) 3 precursor and triethylene glycol solvent. Also, the X-ray diffraction and photoelectron spectroscopy measurements support that the subsequent heat treatment transforms the Co(OH)(2) into the crystalline Co3O4 NPs on the CNNT. Also, the near-edge X-ray absorption fine structure analysis and density functional theory calculations provide a clue regarding the role of pyridine-and graphite-like N atoms of the CNNT to anchor agglomeration-free Co3O4 NPs on its surface. Indeed, the Co3O4 NPs-CNNT hybrid shows high peroxidase-like redox activity for 3,3,5,5-tetramethylbenzidine (TMB) in the presence of H2O2. Furthermore, the electron spinning resonance analysis elucidates the mechanism for the high peroxidase-like redox activity, where the electrons of Co3O4 NPs and a CNNT first move to H2O2 and then H2O2 form one OH radicals and one OH ion. Next, TMB is oxidized by a Co3O4 NPs-CNNT hybrid and generates electrons. Then, the generated electrons offset to maintain the neutral state of a Co3O4 NPs-CNNT hybrid. The XRD data of a Co3O4 NPs-CNNT hybrid after the peroxidase reaction further supports our proposed model. | - |
dc.language | English | - |
dc.publisher | ROYAL SOC CHEMISTRY | - |
dc.subject | REMEDIATION | - |
dc.subject | COBALT | - |
dc.title | Two-step synthesis of agglomeration-free peroxidase-like Co3O4 nanoparticles-carbon nitride nanotube hybrids enabling a high redox activity | - |
dc.type | Article | - |
dc.identifier.wosid | 000325950600081 | - |
dc.identifier.scopusid | 2-s2.0-84886938194 | - |
dc.type.rims | ART | - |
dc.citation.volume | 3 | - |
dc.citation.issue | 43 | - |
dc.citation.beginningpage | 20179 | - |
dc.citation.endingpage | 20185 | - |
dc.citation.publicationname | RSC ADVANCES | - |
dc.identifier.doi | 10.1039/c3ra42117a | - |
dc.embargo.liftdate | 9999-12-31 | - |
dc.embargo.terms | 9999-12-31 | - |
dc.contributor.localauthor | Kang, Jeung-Ku | - |
dc.contributor.nonIdAuthor | Choi, Hwa-Seob | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordPlus | REMEDIATION | - |
dc.subject.keywordPlus | COBALT | - |
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