Journal
CHINESE JOURNAL OF CHEMISTRY
Volume 39, Issue 12, Pages 3399-3403Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cjoc.202100431
Keywords
Actinides; Photooxidation; Radiochemistry; Plutonium; Separation
Categories
Funding
- National Natural Science Foundation of China [21790372, 21822606]
- Science Challenging Project [TZ2016004]
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The study introduces a light-driven oxidation approach that can effectively oxidize plutonium (IV) to different oxidation states without the addition of extra chemical oxidants, contributing to efficient recovery of plutonium in nuclear wastes and green stripping of plutonium from an organic solvent.
Main observation and conclusion Plutonium (Pu) is a key actinide in nuclear industry and is the only element in the periodic table known to date that could exist in four different oxidation states simultaneously in aqueous solution. Efficient recovery of Pu in nuclear wastes relies greatly on the precise control of its oxidation states. Herein, we introduce a light-driven oxidation approach that could effectively oxidize Pu(IV) to Pu(VI) in acidic solutions without the addition of extra chemical oxidants. The oxidation proceeds via the reaction of Pu(IV) with the oxidative species induced by UV light irradiation. This approach can help with the separation of Pu from other metals and can be further extended to a biphasic extraction system to achieve green and efficient stripping of Pu from an organic solvent.
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