Graphene as a thin-film catalyst booster: graphene-catalyst interface plays a critical role
DC Field | Value | Language |
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dc.contributor.author | Chae, Sieun | - |
dc.contributor.author | Choi, Won Jin | - |
dc.contributor.author | Chae, Soo Sang | - |
dc.contributor.author | Jang, Seunghun | - |
dc.contributor.author | Chang, Hyunju | - |
dc.contributor.author | Lee, Tae Il | - |
dc.contributor.author | Kim, Youn Sang | - |
dc.contributor.author | Lee, Jeong-O | - |
dc.date.available | 2020-02-27T16:41:09Z | - |
dc.date.created | 2020-02-06 | - |
dc.date.issued | 2017-12-08 | - |
dc.identifier.issn | 0957-4484 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/5355 | - |
dc.description.abstract | Due to its extreme thinness, graphene can transmit some surface properties of its underlying substrate, a phenomenon referred to as graphene transparency. Here we demonstrate the application of the transparency of graphene as a protector of thin-film catalysts and a booster of their catalytic efficiency. The photocatalytic degradation of dye molecules by ZnO thin films was chosen as a model system. A ZnO thin film coated with monolayer graphene showed greater catalytic efficiency and long-term stability than did bare ZnO. Interestingly, we found the catalytic efficiency of the graphene-coated ZnO thin film to depend critically on the nature of the bottom ZnO layer; graphene transferred to a relatively rough, sputter-coated ZnO thin film showed rather poor catalytic degradation of the dye molecules while a smooth sol-gelsynthesized ZnO covered with monolayer graphene showed enhanced catalytic degradation. Based on a systematic investigation of the interface between graphene and ZnO thin films, we concluded the transparency of graphene to be critically dependent on its interface with a supporting substrate. Graphene supported on an atomically flat substrate was found to efficiently transmit the properties of the substrate, but graphene suspended on a substrate with a rough nanoscale topography was completely opaque to the substrate properties. Our experimental observations revealed the morphology of the substrate to be a key factor affecting the transparency of graphene, and should be taken into account in order to optimally apply graphene as a protector of catalytic thin films and a booster of their catalysis. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | IOP PUBLISHING LTD | - |
dc.relation.isPartOf | NANOTECHNOLOGY | - |
dc.subject | WETTING TRANSPARENCY | - |
dc.subject | RAMAN-SPECTROSCOPY | - |
dc.subject | ZNO | - |
dc.subject | STRAIN | - |
dc.subject | HYBRIDIZATION | - |
dc.subject | ENHANCEMENT | - |
dc.subject | WETTABILITY | - |
dc.subject | PERFORMANCE | - |
dc.subject | REACTIVITY | - |
dc.subject | DEPOSITION | - |
dc.title | Graphene as a thin-film catalyst booster: graphene-catalyst interface plays a critical role | - |
dc.type | Article | - |
dc.type.rims | ART | - |
dc.description.journalClass | 1 | - |
dc.identifier.wosid | 000415606900003 | - |
dc.identifier.doi | 10.1088/1361-6528/aa94b0 | - |
dc.identifier.bibliographicCitation | NANOTECHNOLOGY, v.28, no.49 | - |
dc.identifier.scopusid | 2-s2.0-85035335920 | - |
dc.citation.title | NANOTECHNOLOGY | - |
dc.citation.volume | 28 | - |
dc.citation.number | 49 | - |
dc.contributor.affiliatedAuthor | Lee, Tae Il | - |
dc.type.docType | Article | - |
dc.subject.keywordAuthor | graphene | - |
dc.subject.keywordAuthor | transparency | - |
dc.subject.keywordAuthor | morphology | - |
dc.subject.keywordAuthor | surface energy | - |
dc.subject.keywordAuthor | hydrothermal growth | - |
dc.subject.keywordPlus | WETTING TRANSPARENCY | - |
dc.subject.keywordPlus | RAMAN-SPECTROSCOPY | - |
dc.subject.keywordPlus | ZNO | - |
dc.subject.keywordPlus | STRAIN | - |
dc.subject.keywordPlus | HYBRIDIZATION | - |
dc.subject.keywordPlus | ENHANCEMENT | - |
dc.subject.keywordPlus | WETTABILITY | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | REACTIVITY | - |
dc.subject.keywordPlus | DEPOSITION | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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