Bismuth-embedded SBA-15 mesoporous silica for radioactive iodine capture and stable storage

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dc.contributor.authorYang, Jae Hwanko
dc.contributor.authorCho, Yong-Junko
dc.contributor.authorShin, Jin Myeongko
dc.contributor.authorYim, Man-Sungko
dc.date.accessioned2016-06-29T02:07:43Z-
dc.date.available2016-06-29T02:07:43Z-
dc.date.created2015-12-22-
dc.date.created2015-12-22-
dc.date.created2015-12-22-
dc.date.issued2015-10-
dc.identifier.citationJOURNAL OF NUCLEAR MATERIALS, v.465, pp.556 - 564-
dc.identifier.issn0022-3115-
dc.identifier.urihttp://hdl.handle.net/10203/208507-
dc.description.abstractEfficient capture and stable storage of the long-lived iodine-129 (I-129), released as off-gas from nuclear fuel reprocessing, have been of significant concern in the waste management field. In this study, bismuth-embedded SBA-15 mesoporous silica was firstly applied for iodine capture and storage. SBA-15 was functionalized with thiol (-SH) groups, followed by bismuth adsorption with Bi-S bonding, which was thermally treated to form Bi2S3 within SBA-15. The bismuth-embedded SBA-15s demonstrated high iodine loading capacities (up to 540 mg-l/g-sorbent), which benefitted from high surface area and porosity of SBA-15 as well as the formation of thermodynamically stable BiI3 compound. Iodine physisorption was effectively suppressed due to the large pores present in SBA-15, resulting in chemisorption as a main mechanism for iodine confinement. Furthermore, a chemically durable iodine-bearing material was made with a facile post-sorption process, during which the iodine-incorporated phase was changed from BiI3 to chemically durable Bi5O7I. Thus, our results showed that both efficient capture and stabilization of 1291 would be possible with the bismuth-embedded SBA-15, in contrast to other sorbents mainly focused on iodine capture.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleBismuth-embedded SBA-15 mesoporous silica for radioactive iodine capture and stable storage-
dc.typeArticle-
dc.identifier.wosid000364890300068-
dc.identifier.scopusid2-s2.0-84947920338-
dc.type.rimsART-
dc.citation.volume465-
dc.citation.beginningpage556-
dc.citation.endingpage564-
dc.citation.publicationnameJOURNAL OF NUCLEAR MATERIALS-
dc.identifier.doi10.1016/j.jnucmat.2015.06.043-
dc.contributor.localauthorYim, Man-Sung-
dc.contributor.nonIdAuthorCho, Yong-Jun-
dc.contributor.nonIdAuthorShin, Jin Myeong-
dc.description.isOpenAccessN-
dc.type.journalArticleArticle-
dc.subject.keywordAuthorlodine-129-
dc.subject.keywordAuthorBismuth-embedded SBA-15-
dc.subject.keywordAuthorChemisorption-
dc.subject.keywordAuthorPost-sorption process-
dc.subject.keywordAuthorEfficient capture and stabilization-
dc.subject.keywordPlusCHALCOGEN-BASED AEROGELS-
dc.subject.keywordPlusSELECTIVE ADSORPTION-
dc.subject.keywordPlusWASTE FORMS-
dc.subject.keywordPlusACID GROUPS-
dc.subject.keywordPlusCONFINEMENT-
dc.subject.keywordPlusREMEDIATION-
dc.subject.keywordPlusSORBENTS-
dc.subject.keywordPlusGLASSES-
dc.subject.keywordPlusSTREAMS-
dc.subject.keywordPlusAREA-
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