DC Field | Value | Language |
---|---|---|
dc.contributor.author | Jeon, Hyungmin | ko |
dc.contributor.author | Seok, Jin | ko |
dc.contributor.author | Ha, Yejee | ko |
dc.contributor.author | Kim, Jeong-Chul | ko |
dc.contributor.author | Cho, Hae Sung | ko |
dc.contributor.author | Yang, Hee-Man | ko |
dc.contributor.author | Choi, Minkee | ko |
dc.date.accessioned | 2023-04-17T03:00:30Z | - |
dc.date.available | 2023-04-17T03:00:30Z | - |
dc.date.created | 2023-04-17 | - |
dc.date.created | 2023-04-17 | - |
dc.date.issued | 2023-06 | - |
dc.identifier.citation | JOURNAL OF HAZARDOUS MATERIALS, v.451 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | http://hdl.handle.net/10203/306339 | - |
dc.description.abstract | Al-rich zeolites such as NaA (Si/Al = 1.00) have been widely applied to remove radioactive 90Sr2+ because of their high surface charge density enabling efficient ion-exchange of multivalent cations. However, due to the small micropore diameters of zeolites and large molecular size of strongly hydrated Sr2+, Sr2+-exchange with zeolites suffers from very slow kinetics. In principle, mesoporous aluminosilicates with low Si/Al ratios close to unity and tetrahedrally coordinated Al sites can exhibit both high capacity and fast kinetics in Sr2+-exchange. Nonetheless, the synthesis of such materials has not been realized yet. In this study, we demonstrate the first successful synthesis of an Al-rich mesoporous silicate (ARMS) using a cationic organosilane surfactant as an efficient mesoporogen. The material exhibited a wormhole-like mesoporous structure with a high surface area (851 m2 g-1) and pore volume (0.77 cm3 g-1), and an Al-rich framework (Si/Al = 1.08) with most Al sites tetrahedrally coordinated. Compared to commercially applied NaA, ARMS exhibited a dramatically improved Sr2+-exchange kinetics (>33-fold larger rate constant) in batch adsorption while showing similarly high Sr2+ capture capacity and selectivity. Due to the fast Sr2+-exchange kinetics, the material also exhibited 3.3-fold larger breakthrough volume than NaA in fixed-bed continuous adsorption. | - |
dc.language | English | - |
dc.publisher | ELSEVIER | - |
dc.title | First successful synthesis of an Al-rich mesoporous aluminosilicate for fast radioactive strontium capture | - |
dc.type | Article | - |
dc.identifier.wosid | 000955232100001 | - |
dc.identifier.scopusid | 2-s2.0-85150773725 | - |
dc.type.rims | ART | - |
dc.citation.volume | 451 | - |
dc.citation.publicationname | JOURNAL OF HAZARDOUS MATERIALS | - |
dc.identifier.doi | 10.1016/j.jhazmat.2023.131136 | - |
dc.contributor.localauthor | Choi, Minkee | - |
dc.contributor.nonIdAuthor | Seok, Jin | - |
dc.contributor.nonIdAuthor | Ha, Yejee | - |
dc.contributor.nonIdAuthor | Kim, Jeong-Chul | - |
dc.contributor.nonIdAuthor | Cho, Hae Sung | - |
dc.contributor.nonIdAuthor | Yang, Hee-Man | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Mesoporous | - |
dc.subject.keywordAuthor | Organosilane surfactant | - |
dc.subject.keywordAuthor | Ion-exchange | - |
dc.subject.keywordAuthor | Strontium | - |
dc.subject.keywordAuthor | Kinetics | - |
dc.subject.keywordPlus | ION-EXCHANGE | - |
dc.subject.keywordPlus | ZEOLITE-A | - |
dc.subject.keywordPlus | REMOVAL | - |
dc.subject.keywordPlus | CESIUM | - |
dc.subject.keywordPlus | MCM-41 | - |
dc.subject.keywordPlus | CS+ | - |
dc.subject.keywordPlus | LTA | - |
dc.subject.keywordPlus | RADIONUCLIDE | - |
dc.subject.keywordPlus | SELECTIVITY | - |
dc.subject.keywordPlus | MONOLITHS | - |
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