Facile one-pot synthesis of dual-cation incorporated titanosilicate and its deposition to membrane surfaces for simultaneous removal of Cs+ and Sr2+

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dc.contributor.authorKim, Yun Konko
dc.contributor.authorKim, Sungjunko
dc.contributor.authorKim, Yonghwanko
dc.contributor.authorBae, Kyeonghuiko
dc.contributor.authorHarbottle, Davidko
dc.contributor.authorLee, Jae Wooko
dc.date.accessioned2019-07-26T09:20:10Z-
dc.date.available2019-07-26T09:20:10Z-
dc.date.created2019-07-11-
dc.date.issued2019-11-
dc.identifier.citationAPPLIED SURFACE SCIENCE, v.493, pp.165 - 176-
dc.identifier.issn0169-4332-
dc.identifier.urihttp://hdl.handle.net/10203/263835-
dc.description.abstractSelective removal of 137Cs and 90Sr from aqueous environments is essential for the volume reduction and ultimate safe storage of nuclear waste. This study introduces a facile one-pot hydrothermal synthesis of Dual-cation form of TitanoSilicate (DTS, M3HTi4O4(SiO4)3, M = Na+ and K+) for the effective and simultaneous removal of Cs+ and Sr2+. DTS showed enhanced adsorption capacities (469 mg/g for Cs+ and 179 mg/g for Sr2+) and the adsorption kinetics were extremely fast with around 98% and >99% removal achieved within 1 min from a dilute Cs+ and Sr2+ solution, respectively. Moreover, DTS indicated the superior selectivity for both Cs+ and Sr2+ due to the dual-cation incorporation in the structure. In groundwater, the distribution coefficients (Kd at V/m = 1000 mL/g) for DTS were high for both Cs+ (1 ppm, 2.9 × 105 mL/g) and Sr2+ (1 ppm, 1.0 × 105 mL/g), and even in seawater DTS maintained a Cs+ (1 ppm) Kd value as high as 4.9 × 104 mL/g. Remarkably, DTS is synthesized as a membrane with graphene oxide for continuous removal of the radionuclides, which is extremely beneficial to purifying a large volume of contaminated water.-
dc.languageEnglish-
dc.publisherELSEVIER SCIENCE BV-
dc.titleFacile one-pot synthesis of dual-cation incorporated titanosilicate and its deposition to membrane surfaces for simultaneous removal of Cs+ and Sr2+-
dc.typeArticle-
dc.type.rimsART-
dc.citation.volume493-
dc.citation.beginningpage165-
dc.citation.endingpage176-
dc.citation.publicationnameAPPLIED SURFACE SCIENCE-
dc.identifier.doi10.1016/j.apsusc.2019.07.008-
dc.contributor.localauthorLee, Jae Woo-
dc.contributor.nonIdAuthorKim, Sungjun-
dc.contributor.nonIdAuthorBae, Kyeonghui-
dc.contributor.nonIdAuthorHarbottle, David-
dc.description.isOpenAccessN-
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CBE-Journal Papers(저널논문)
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