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dc.contributor.authorLee, Yu Ri-
dc.contributor.authorDo, Xuan Huy-
dc.contributor.authorCho, Kie Yong-
dc.contributor.authorJeong, Keunhong-
dc.contributor.authorBaek, Kyung-Youl-
dc.date.accessioned2024-01-19T16:31:08Z-
dc.date.available2024-01-19T16:31:08Z-
dc.date.created2021-09-02-
dc.date.issued2020-10-23-
dc.identifier.issn2574-0970-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/117980-
dc.description.abstractThe efficient removal of radioactive iodine (I-2) has drawn worldwide attention because of the severe effects of radiotoxicity on the environment and human health. As a result, efficient porous materials for the capture and safe storage of radioactive iodine are required. In this work, nanoscale zeolitic imidazolate framework-8 (ZIF-8) and its amino-functionalized ZIF-8 derivatives with 3-amino-1,2,4-triazole (Atz), denoted as ZIF8-A, were prepared via postsynthetic modification, and their performance for I-2 removal from n-hexane was investigated. The abundant amine functionalities in the ZIF8-A structure including the primary and secondary amine groups (-NH2 and -NH) and triazole-ring (-C=N-NH-) not only serve as effective adsorption sites but also form strong interactions with I-2 via electron transfer from the nitrogen atom of the ligand to I-2. The adsorption isotherms and the kinetics were well fitted by the Langmuir model and the pseudo-second-order kinetic model, respectively, suggesting a monolayer chemisorption process. ZIF8-A61 achieved an adsorption capacity of more than 870% compared to the pristine ZIF-8. Based on the experimental and computational results, a plausible mechanism for the adsorption of I-2 on ZIF8-A nanocrystals is proposed by considering the host-guest interactions, specifically, those between the amine functional groups and I-2. In addition, the reusability and structural stability of the adsorbents were investigated.-
dc.languageEnglish-
dc.publisherAMER CHEMICAL SOC-
dc.subjectMETAL-ORGANIC FRAMEWORKS-
dc.subjectHIGHLY EFFICIENT-
dc.subjectCAPTURE-
dc.subjectREMOVAL-
dc.subjectMOFS-
dc.subjectSORBENTS-
dc.subjectHYDROGEN-
dc.subjectZR-
dc.titleAmine-Functionalized Zeolitic Imidazolate Framework-8 (ZIF-8) Nanocrystals for Adsorption of Radioactive Iodine-
dc.typeArticle-
dc.identifier.doi10.1021/acsanm.0c01914-
dc.description.journalClass1-
dc.identifier.bibliographicCitationACS APPLIED NANO MATERIALS, v.3, no.10, pp.9852 - 9861-
dc.citation.titleACS APPLIED NANO MATERIALS-
dc.citation.volume3-
dc.citation.number10-
dc.citation.startPage9852-
dc.citation.endPage9861-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000583331600091-
dc.identifier.scopusid2-s2.0-85096876983-
dc.relation.journalWebOfScienceCategoryNanoscience & Nanotechnology-
dc.relation.journalWebOfScienceCategoryMaterials Science, Multidisciplinary-
dc.relation.journalResearchAreaScience & Technology - Other Topics-
dc.relation.journalResearchAreaMaterials Science-
dc.type.docTypeArticle-
dc.subject.keywordPlusMETAL-ORGANIC FRAMEWORKS-
dc.subject.keywordPlusHIGHLY EFFICIENT-
dc.subject.keywordPlusCAPTURE-
dc.subject.keywordPlusREMOVAL-
dc.subject.keywordPlusMOFS-
dc.subject.keywordPlusSORBENTS-
dc.subject.keywordPlusHYDROGEN-
dc.subject.keywordPlusZR-
dc.subject.keywordAuthoriodine adsorption-
dc.subject.keywordAuthorZIF-8-
dc.subject.keywordAuthoramine functionalization-
dc.subject.keywordAuthordensity functional theory-
dc.subject.keywordAuthorelectron-transfer complex-
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