Sorption of radionuclides and metals to graphene oxide and magnetic graphene oxide

Graphene oxide (GO) and two magnetic graphene oxide (MGO) composites with a different amount of magnetite were synthesized, characterized and used in sorption experiments. The effect of pH on sorption of Am(III) and Pu(IV) isotopes as well as Co(II), Ni(II), Cu(II) and Pb(II) to GO and MGO was studi...

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Published inJournal of radioanalytical and nuclear chemistry Vol. 307; no. 3; pp. 2267 - 2275
Main Authors Lujanienė, Galina, Šemčuk, Sergej, Kulakauskaitė, Ieva, Mažeika, Kęstutis, Valiulis, Darius, Juškėnas, Remigijus, Tautkus, Stasys
Format Journal Article
LanguageEnglish
Published Dordrecht Springer Netherlands 01.03.2016
Springer
Subjects
Chemistry
Chemistry and Materials Science
Cobalt
Diagnostic Radiology
Graphene
Graphite
Hadrons
Heavy Ions
Inorganic Chemistry
Magnetite
Nuclear Chemistry
Nuclear Physics
Physical Chemistry
Sorption
Magnetic graphene oxide
Am
Pu
Heavy metals
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Summary:Graphene oxide (GO) and two magnetic graphene oxide (MGO) composites with a different amount of magnetite were synthesized, characterized and used in sorption experiments. The effect of pH on sorption of Am(III) and Pu(IV) isotopes as well as Co(II), Ni(II), Cu(II) and Pb(II) to GO and MGO was studied in equilibrium and kinetic experiments. The adsorption capacities varied from 30 to 574 mg g −1 while rate constants ranged from 0.29 to 0.46 min −1 and increased in the following order Co, Cu, Pb and Ni. Large variations in the uptake of studied elements by adsorbents depending on initial and final pH of solutions were observed.
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-015-4461-2