NDLI: Sorption interactions of plutonium and europium with ordered mesoporous carbon

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Inside back cover

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Journal of Materials Chemistry A Vol - 2 Issue - 19

Journal of Materials Chemistry A Vol - 2 Issue - 9

Journal of Materials Chemistry A Vol - 2 Issue - 8

Journal of Materials Chemistry A Vol - 2 Issue - 7

Journal of Materials Chemistry A Vol - 2 Issue - 6

Journal of Materials Chemistry A Vol - 2 Issue - 5

Journal of Materials Chemistry A Vol -1

Sorption interactions of plutonium and europium with ordered mesoporous carbon

Content Provider	Royal Society of Chemistry (RSC)
Author	Kersting, Annie B. Zavarin, Mavrik Wang, Jinxiu Jones, Stephen May, Erin Olive, Daniel Nitsche, Heino Dai, Zurong Zhao, Dongyuan Parsons-Moss, Tashi
Copyright Year	2014
Abstract	Both 3d-cubic FDU-16-type and 2d-hexagonal C-CS-type ordered mesoporous carbons (OMCs) were synthesized to test their application as radionuclide sorbent materials. A portion of each OMC was oxidized with acidic ammonium persulfate (APS), and the physicochemical properties of all four OMCs were characterized with several techniques. Based on plutonium (Pu) sorption and desorption tests with FDU-16, oxidized FDU-16-COOH, C-CS, and oxidized C-CS-COOH, the C-CS-COOH was the most effective OMC for sorption of Pu over a wide pH range. Batch sorption interactions of C-CS and C-CS-COOH were further explored with Pu(VI) and Eu(III) to determine the uptake capacities, sorption kinetics, and effects of ionic strength. The nature of the Pu sorption reaction was also probed via X-ray absorption spectroscopy (XAS) and transmission electron microscopy (TEM). The highly oxidized surface, large pores, and high surface area of C-CS-COOH make it a very effective general scavenger for actinide and lanthanide cations. Pu and Eu uptake by C-CS-COOH appears to be dictated by chemisorption, and the Langmuir Eu capacity (138 mg g−1 from pH 4 solution) is higher than those previously reported for many other adsorbents. Pristine C-CS has a low affinity for Eu(III), but is an excellent sorbent of PuO2 nanocrystals (∼3 nm diameter), which are formed because the carbon reduces Pu(VI) and Pu(V) to Pu(IV). Plutonium is also reduced by C-CS-COOH, but PuO2 colloid formation in pH 4 solution is prevented by carboxyl complexation of Pu(IV) at the C-CS-COOH surface.
Starting Page	11209
Ending Page	11221
Page Count	13
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	2
Issue Number	29
Journal	Journal of Materials Chemistry A
DOI	10.1039/c4ta01740d
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	OMC Eu Langmuir Eu Pu Mesoporous material Radionuclide Adsorption Persulfate Plutonium Sorption PH Ionic strength X-ray absorption spectroscopy Spectroscopy Transmission electron microscopy Actinide Lanthanide Chemisorption Langmuir adsorption model Carbon Colloid
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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