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Kim, Hee Reyoung
Liquid Metal Magnetohydrodynamics Lab/ Environmental Radiation Safety Lab
Research Interests
  • Environmental radiation safety

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Eco-friendly one-pot synthesis of Prussian blue-embedded magnetic hydrogel beads for the removal of cesium from water

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dc.contributor.authorYang, Hee-Manko
dc.contributor.authorHwang, Ju Riko
dc.contributor.authorLee, Dong Yeopko
dc.contributor.authorKim, Kyu Beomko
dc.contributor.authorPark, Chan Wooko
dc.contributor.authorKim, Hee Reyoungko
dc.contributor.authorLee, Kune-Wooko
dc.date.available2018-09-06T02:31:43Z-
dc.date.created2018-08-30ko
dc.date.issued201807ko
dc.identifier.citationSCIENTIFIC REPORTS, v.8, no., pp.11476 -ko
dc.identifier.issn2045-2322ko
dc.identifier.urihttp://scholarworks.unist.ac.kr/handle/201301/24744-
dc.identifier.urihttps://www.nature.com/articles/s41598-018-29767-yko
dc.description.abstractA simple one-step approach to fabricating Prussian blue-embedded magnetic hydrogel beads (PBMHBs) was fabricated for the effective magnetic removal of radioactive cesium (Cs-137) from water. Through the simple dropwise addition of a mixed aqueous solution of iron salts, commercial PB and polyvinyl alcohol (PVA) to an ammonium hydroxide (NH4OH) solution, the formation of hydrogel beads and the encapsulation of PB in beads were achieved in one pot through the gelation of PVA with in situ-formed iron oxide nanoparticles as the cross-linker. The obtained PB-MHBs, with 43.77 weight %of PB, were stable without releasing PB for up to 2 weeks and could be effectively separated from aqueous solutions by an external magnetic field, which is convenient for the large-scale treatment of Cs-contaminated water. Detailed Cs adsorption studies revealed that the adsorption isotherms and kinetics could be effectively described by the Langmuir isotherm model and the pseudo-second-order model, respectively. Most importantly, the PB-MHBs exhibited excellent selectivity for Cs-137 in (137)Cscontaminated simulated groundwater (55 Bq/g) with a high removal efficiency (>99.5%), and the effective removal of Cs-137 from real seawater by these PB-MHBs demonstrated the excellent potential of this material for practical application in the decontamination of Cs-137-contaminated seawaterko
dc.languageENGko
dc.publisherNATURE PUBLISHING GROUPko
dc.titleEco-friendly one-pot synthesis of Prussian blue-embedded magnetic hydrogel beads for the removal of cesium from waterko
dc.typeARTICLEko
dc.identifier.pid1281null
dc.identifier.rimsid30852ko
dc.identifier.scopusid2-s2.0-85050918916ko
dc.identifier.wosid000440288600010ko
dc.type.rimsAko
dc.identifier.doihttp://dx.doi.org/10.1038/s41598-018-29767-yko
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