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Graphene oxide for effective radionuclide removal

Anna Yu. RomanchukDepartment of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, RussiaAlexander SlesarevDepartment of Chemistry, Rice University, 6100 Main St, Houston, Texas, USAStepan N. KalmykovDepartment of Chemistry, Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, RussiaDmitry V. KosynkinDepartment of Chemistry, Rice University, 6100 Main St, Houston, Texas, USAJames M. TourDepartment of Chemistry, Rice University, 6100 Main St, Houston, Texas, USA

2012en

ABI

Annotatsiya

Here we show the efficacy of graphene oxide (GO) for rapid removal of some of the most toxic and radioactive long-lived human-made radionuclides from contaminated water, even from acidic solutions (pH < 2). The interaction of GO with actinides including Am(III), Th(IV), Pu(IV), Np(V), U(VI) and typical fission products Sr(II), Eu(III) and Tc(VII) were studied, along with their sorption kinetics. Cation/GO coagulation occurs with the formation of nanoparticle aggregates of GO sheets, facilitating their removal. GO is far more effective in removal of transuranium elements from simulated nuclear waste solutions than other routinely used sorbents such as bentonite clays and activated carbon. These results point toward a simple methodology to mollify the severity of nuclear waste contamination, thereby leading to effective measures for environmental remediation.

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Identifikatorlar

DOI: 10.1039/c2cp44593j

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