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다차원탄소재료연구단
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Liquid-phase water isotope separation using graphene-oxide membranes

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dc.contributor.authorChing, Karin-
dc.contributor.authorBaker, Andy-
dc.contributor.authorTanaka, Ryoji-
dc.contributor.authorZhao, Tingwen-
dc.contributor.authorSu, Zhen-
dc.contributor.authorRodney S. Ruoff-
dc.contributor.authorZhao, Chuan-
dc.contributor.authorChen, Xianjue-
dc.date.accessioned2021-12-08T07:30:00Z-
dc.date.available2021-12-08T07:30:00Z-
dc.date.created2021-11-29-
dc.date.issued2022-01-
dc.identifier.issn0008-6223-
dc.identifier.urihttps://pr.ibs.re.kr/handle/8788114/10807-
dc.description.abstractWe report pressure-driven liquid-phase isotope separation (dead-end filtration) to enrich D and O-18 in natural water using graphene oxide (G-O) and UV-reduced graphene oxide (UV-rG-O) membranes. The isotope diffusivity (molecular diffusion and adsorption separation) was found to be responsible for isotope separation. Adsorption separation is the dominant mechanism for improvements in D and O-18 enrichment via increased G-O loading that leads to the increased number of adsorption sites (epoxy and hydroxyl groups on G-O), and higher degrees of reduction of G-O that result in the narrowing of the nanochannels which decreases the portion of water molecules experiencing molecular diffusion. The best performing membrane was "UV-rG-O" made by exposing a G-O membrane to 24 h UV irradiation from one side, showing enrichment of D of 0.5% for D/H and O-18 of 0.08% for O-18/O-16 in a single-stage experiment, without contribution from the vapor pressure isotope effect. This work improves the understanding of the mechanisms for graphene-based membrane separation of D and O-18 enriched water. (C) 2021 Elsevier Ltd. All rights reserved.-
dc.language영어-
dc.publisherPERGAMON-ELSEVIER SCIENCE LTD-
dc.titleLiquid-phase water isotope separation using graphene-oxide membranes-
dc.typeArticle-
dc.type.rimsART-
dc.identifier.wosid000712465900006-
dc.identifier.scopusid2-s2.0-85119274968-
dc.identifier.rimsid76783-
dc.contributor.affiliatedAuthorRodney S. Ruoff-
dc.identifier.doi10.1016/j.carbon.2021.10.009-
dc.identifier.bibliographicCitationCARBON, v.186, pp.344 - 354-
dc.relation.isPartOfCARBON-
dc.citation.titleCARBON-
dc.citation.volume186-
dc.citation.startPage344-
dc.citation.endPage354-
dc.description.journalClass1-
dc.description.journalClass1-
dc.description.isOpenAccessN-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.relation.journalWebOfScienceCategoryChemistry, Physical-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.subject.keywordPlusGRAPHITE OXIDE-
dc.subject.keywordPlusREDUCTION-
dc.subject.keywordPlusDIFFUSION-
dc.subject.keywordPlusOXYGEN-
dc.subject.keywordPlusH2O-
dc.subject.keywordPlusFRACTIONATION-
dc.subject.keywordPlusPERMEATION-
dc.subject.keywordPlusADSORPTION-
dc.subject.keywordPlusD2O-
dc.subject.keywordAuthorGraphene oxide-
dc.subject.keywordAuthorMembranes-
dc.subject.keywordAuthorWater isotopes-
dc.subject.keywordAuthorFiltration-
dc.subject.keywordAuthorIsotope effect-
dc.subject.keywordAuthorDiffusion-
Appears in Collections:
Center for Multidimensional Carbon Materials(다차원 탄소재료 연구단) > 1. Journal Papers (저널논문)
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