DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, Hyunjung | ko |
dc.contributor.author | Eom, Ho Hyeon | ko |
dc.contributor.author | Kim, Yonghwan | ko |
dc.contributor.author | Harbottle, David | ko |
dc.contributor.author | Lee, Jae Woo | ko |
dc.date.accessioned | 2022-07-20T07:00:12Z | - |
dc.date.available | 2022-07-20T07:00:12Z | - |
dc.date.created | 2022-07-19 | - |
dc.date.created | 2022-07-19 | - |
dc.date.created | 2022-07-19 | - |
dc.date.created | 2022-07-19 | - |
dc.date.issued | 2022-12 | - |
dc.identifier.citation | CHEMICAL ENGINEERING JOURNAL, v.450, no.Part2 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | http://hdl.handle.net/10203/297421 | - |
dc.description.abstract | Cesium (137Cs) is one of the representative radionuclides which must be eliminated from nuclear waste. Here, we designed a zinc hexacyanoferrate (ZnHCF) composite using ZIF-8 derived carbon (ZDC) and utilized it as an electrode to selectively remove cesium ions. Specifically, we focused on how the ZIF-8 pyrolysis temperature affected the composite formation and non-radioactive cesium removal performance. With an optimized temperature of 700 °C, a highly conductive and uniform composite with well-distributed ZnHCF was produced, and it exhibited a large cesium uptake capacity (204.9 mg g−1). The composite electrode also retained high selectivity in Na-rich environments (molar Na/Cs = 1330, Kd (mL g−1) = 1.04 105), K-rich environments (molar K/Cs = 133, Kd (mL g−1) = 7.20 104), and groundwater conditions (95 % removal, C0 = 0.007 mM Cs+). Moreover, the reversible uptake and release of cesium over 5 cycles were feasible in our system without any chemical additives, which can be reached 100 % regeneration at the fourth cycle. Using in-depth characterizations including XRD and XPS, we investigated the faradaic behavior, phase transition, and structural stability of the ZnHCF-ZDC composite over 5 cycles. This study formed a composite electrosorbent with a ZIF-derived carbon support and applied it to cesium removal for the first time. This electro-mediated cesium removal process is expected to serve as a green technology for the future nuclear industry and environmental remediation. | - |
dc.language | English | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.title | Reversible electro-mediated cesium ion removal using a zeolitic imidazolate framework derived zinc hexacyanoferrate composite | - |
dc.type | Article | - |
dc.identifier.wosid | 000830818400001 | - |
dc.identifier.scopusid | 2-s2.0-85134604366 | - |
dc.type.rims | ART | - |
dc.citation.volume | 450 | - |
dc.citation.issue | Part2 | - |
dc.citation.publicationname | CHEMICAL ENGINEERING JOURNAL | - |
dc.identifier.doi | 10.1016/j.cej.2022.138029 | - |
dc.contributor.localauthor | Lee, Jae Woo | - |
dc.contributor.nonIdAuthor | Kim, Hyunjung | - |
dc.contributor.nonIdAuthor | Harbottle, David | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Cesiumion | - |
dc.subject.keywordAuthor | ZIF-8 | - |
dc.subject.keywordAuthor | Pyrolysis | - |
dc.subject.keywordAuthor | Electrosorption | - |
dc.subject.keywordAuthor | Redoxreaction | - |
dc.subject.keywordPlus | POTASSIUM COPPER HEXACYANOFERRATE | - |
dc.subject.keywordPlus | EFFECTIVE CS+ REMOVAL | - |
dc.subject.keywordPlus | ELECTROCHEMICAL REMOVAL | - |
dc.subject.keywordPlus | ADSORPTION CAPACITY | - |
dc.subject.keywordPlus | RADIOACTIVE CESIUM | - |
dc.subject.keywordPlus | EFFICIENT REMOVAL | - |
dc.subject.keywordPlus | NUCLEAR-POWER | - |
dc.subject.keywordPlus | IMMOBILIZATION | - |
dc.subject.keywordPlus | DESALINATION | - |
dc.subject.keywordPlus | PERFORMANCE | - |
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