Spectroscopic Analyses of Changes in Photocatalytic and Catalytic Activities of Mn- and Ni-Ion Doped and Base-Treated Reduced Graphene Oxide
DC Field | Value | Language |
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dc.contributor.author | Lee, Hangil | - |
dc.contributor.author | Kim, Hyun Sung | - |
dc.date.accessioned | 2022-04-19T09:06:56Z | - |
dc.date.available | 2022-04-19T09:06:56Z | - |
dc.date.issued | 2021-08 | - |
dc.identifier.issn | 2073-4344 | - |
dc.identifier.issn | 2073-4344 | - |
dc.identifier.uri | https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/146491 | - |
dc.description.abstract | While reduced graphene oxide (rGO) is used widely as a catalyst, its catalytic activity can be improved significantly by modifying it with a metal. In this study, we compared the photocatalytic and catalytic properties of base-treated rGO particles and transition-metal-ion-doped rGO based on the oxidation reaction of thiophenol and the photocatalytic degradation of 4-chlorophenol. Since the two catalytic activities are related to the changes in the electronic structure of rGO, X-ray photoemission spectroscopy, X-ray absorption spectroscopy, and Raman spectroscopy were performed. When rGO was doped with Mn2+ ions, its catalytic properties improved with respect to both reactions. The changes in the electronic structure of rGO are attributed to the formation of defect structures on the rGO surface via a reaction between the doped Mn2+ ions and oxygen of the rGO surface. Thus, the results show that the doping of rGO with Mn ions in the +2-charge state (stable oxide form: MnO) enhances its catalytic and photocatalytic activities. Hence, this study provides new insights into the use of defect-controlled rGO as a novel catalyst. | - |
dc.format.extent | 10 | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | MDPI | - |
dc.title | Spectroscopic Analyses of Changes in Photocatalytic and Catalytic Activities of Mn- and Ni-Ion Doped and Base-Treated Reduced Graphene Oxide | - |
dc.type | Article | - |
dc.publisher.location | 스위스 | - |
dc.identifier.doi | 10.3390/catal11080990 | - |
dc.identifier.scopusid | 2-s2.0-85112769977 | - |
dc.identifier.wosid | 000688973900001 | - |
dc.identifier.bibliographicCitation | CATALYSTS, v.11, no.8, pp 1 - 10 | - |
dc.citation.title | CATALYSTS | - |
dc.citation.volume | 11 | - |
dc.citation.number | 8 | - |
dc.citation.startPage | 1 | - |
dc.citation.endPage | 10 | - |
dc.type.docType | Article | - |
dc.description.isOpenAccess | N | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.subject.keywordPlus | REDUCTION | - |
dc.subject.keywordPlus | NANOSHEETS | - |
dc.subject.keywordPlus | DEGRADATION | - |
dc.subject.keywordPlus | FABRICATION | - |
dc.subject.keywordPlus | COMPOSITE | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | RGO | - |
dc.subject.keywordPlus | HETEROSTRUCTURE | - |
dc.subject.keywordPlus | ELECTROCATALYST | - |
dc.subject.keywordPlus | SUPERCAPACITORS | - |
dc.subject.keywordAuthor | reduced graphene oxide | - |
dc.subject.keywordAuthor | photocatalyst | - |
dc.subject.keywordAuthor | doping | - |
dc.subject.keywordAuthor | base treatment | - |
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