000075763 001__ 75763
000075763 005__ 20191122145057.0
000075763 0247_ $$2doi$$a10.1039/C7EN00902J
000075763 0248_ $$2sideral$$a102148
000075763 037__ $$aART-2018-102148
000075763 041__ $$aeng
000075763 100__ $$aHelal, A.S.
000075763 245__ $$aHighly efficient and selective extraction of uranium from aqueous solution by a magnetic device: succinyl-ß-cyclodextrin-APTES@maghemite nanoparticles
000075763 260__ $$c2018
000075763 5060_ $$aAccess copy available to the general public$$fUnrestricted
000075763 5203_ $$aThe removal of radio-elements, notably uranium, from waste-waters is crucial for public health and environmental remediation. To this end, succinyl-ß-cyclodextrin (SßCD) is grafted onto maghemite nanoparticles (NPs) synthesized by the polyol method. The nanocomposite was well characterized. The adsorption of U(VI) by SßCD-APTES@Fe2O3 is pH-dependent with a maximum at pH 6. Adsorption occurs mainly by complex formation and displays a very good selectivity for U(VI) compared to other cations such as Cs+, K+, Na+, Mg2+ and Al3+. The data were plotted according to the Langmuir, Freundlich, Elovich, Temkin and Halsey isotherms. The Langmuir isotherm maximum adsorption capacity (qmax) is 286 mg U g-1 and higher than for other reported sorbents. Moreover, Cs-corrected STEM visualizes the uranium on the NP surface, which is consistent with the Halsey isotherm model for multilayer adsorption. The U(VI) adsorbed on SßCD-APTES@Fe2O3 is easily recovered by magnetic sedimentation and desorption performed in a small volume in order to concentrate the extract. The nanocomposite can be regenerated and re-used at least tenfold.
000075763 540__ $$9info:eu-repo/semantics/openAccess$$aAll rights reserved$$uhttp://www.europeana.eu/rights/rr-f/
000075763 590__ $$a7.704$$b2018
000075763 591__ $$aENVIRONMENTAL SCIENCES$$b11 / 250 = 0.044$$c2018$$dQ1$$eT1
000075763 591__ $$aNANOSCIENCE & NANOTECHNOLOGY$$b17 / 94 = 0.181$$c2018$$dQ1$$eT1
000075763 591__ $$aCHEMISTRY, MULTIDISCIPLINARY$$b24 / 172 = 0.14$$c2018$$dQ1$$eT1
000075763 592__ $$a1.936$$b2018
000075763 593__ $$aMaterials Science (miscellaneous)$$c2018$$dQ1
000075763 593__ $$aEnvironmental Science (miscellaneous)$$c2018$$dQ1
000075763 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/acceptedVersion
000075763 700__ $$aMazario, E.
000075763 700__ $$0(orcid)0000-0002-5229-2717$$aMayoral, A.
000075763 700__ $$aDecorse, P.
000075763 700__ $$aLosno, R.
000075763 700__ $$aLion, C.
000075763 700__ $$aAmmara S.
000075763 700__ $$aHémadi, M.
000075763 773__ $$g5, 1 (2018), 158-168$$pEnviron. sci. nano$$tEnvironmental science. Nano$$x2051-8153
000075763 8564_ $$s999351$$uhttps://zaguan.unizar.es/record/75763/files/texto_completo.pdf$$yPostprint
000075763 8564_ $$s118358$$uhttps://zaguan.unizar.es/record/75763/files/texto_completo.jpg?subformat=icon$$xicon$$yPostprint
000075763 909CO $$ooai:zaguan.unizar.es:75763$$particulos$$pdriver
000075763 951__ $$a2019-11-22-14:47:06
000075763 980__ $$aARTICLE