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dc.contributor.authorLiu, Zhong
dc.contributor.authorZhou, Yongquan
dc.contributor.authorGuo, Min
dc.contributor.authorLv, Baoliang
dc.contributor.authorWu, Zhijian
dc.contributor.authorZhou, Wuzong
dc.identifier.citationLiu , Z , Zhou , Y , Guo , M , Lv , B , Wu , Z & Zhou , W 2019 , ' Experimental and theoretical investigations of Cs + adsorption on crown ethers modified magnetic adsorbent ' , Journal of Hazardous Materials , vol. 371 , pp. 712-720 .
dc.identifier.otherORCID: /0000-0001-9752-7076/work/62668231
dc.descriptionThis work was financially supported by the NSFC (No: U1607105 and No: 51574286). The Scientific and Technological Funding in Qinghai Province (No: 2018-GX-101, No: 2018-ZJ-722 and No: 2019-HZ-808). “Light of West China” Program and Youth Innovation Promotion Association of CAS (No: 2015141 and 2016377).en
dc.description.abstractCarboxyl Fe3O4 nanoparticles (Fe3O4@R-COOH) modified with 18-Crown-6 ether functional groups have been prepared via an amidation reaction and used as bifunctional adsorbent for Cs+. The adsorbent has a superparamagnetic property, allowing an easy recycling, and a high capacity of Cs+ adsorption on the crown ether. The adsorption isotherms and kinetic behaviors agree well with the Langmuir and the pseudo-second-order models. The material exhibits a high selectivity for Cs+ in the solution with co-existing cations (NH4+, Rb+, K+, Na+ and Li+). A theoretical calculation according to density functional theory (DFT) is used to estimate the structure of Cs+ adsorption on crown ether, demonstrating an exothermic process and showing a good agreement with the experimental observations. The adsorption behavior is affected not only by the size of macrocyclic crown ethers, but also by the chelating symmetry and the binding energy. The newly developed adsorbent has a potential application for removing cesium out of wastewater and salt lakes.
dc.relation.ispartofJournal of Hazardous Materialsen
dc.subjectCarboxyl Fe3O4en
dc.subjectMagnetic adsorbenten
dc.subjectCrown ethersen
dc.subjectQD Chemistryen
dc.titleExperimental and theoretical investigations of Cs+ adsorption on crown ethers modified magnetic adsorbenten
dc.typeJournal articleen
dc.contributor.institutionUniversity of St Andrews. EaSTCHEMen
dc.contributor.institutionUniversity of St Andrews. School of Chemistryen
dc.description.statusPeer revieweden

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