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99TcO4− remediation by a cationic polymeric network.
- Source :
- Nature Communications; 8/1/2018, Vol. 9 Issue 1, p1-1, 1p
- Publication Year :
- 2018
-
Abstract
- Direct removal of <superscript>99</superscript>TcO<subscript>4</subscript><superscript>−</superscript> from the highly acidic solution of used nuclear fuel is highly beneficial for the recovery of uranium and plutonium and more importantly aids in the elimination of <superscript>99</superscript>Tc discharge into the environment. However, this task represents a huge challenge given the combined extreme conditions of super acidity, high ionic strength, and strong radiation field. Here we overcome this challenge using a cationic polymeric network with significant TcO<subscript>4</subscript><superscript>−</superscript> uptake capabilities in four aspects: the fastest sorption kinetics, the highest sorption capacity, the most promising uptake performance from highly acidic solutions, and excellent radiation-resistance and hydrolytic stability among all anion sorbent materials reported. In addition, this material is fully recyclable for multiple sorption/desorption trials, making it extremely attractive for waste partitioning and emergency remediation. The excellent TcO<subscript>4</subscript><superscript>−</superscript> uptake capability is elucidated by X-ray absorption spectroscopy, solid-state NMR measurement, and density functional theory analysis on anion coordination and bonding. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20411723
- Volume :
- 9
- Issue :
- 1
- Database :
- Complementary Index
- Journal :
- Nature Communications
- Publication Type :
- Academic Journal
- Accession number :
- 131065385
- Full Text :
- https://doi.org/10.1038/s41467-018-05380-5