Functional Carbon Capsules Supporting Ruthenium Nanoclusters for Efficient Electrocatalytic ⁹⁹ TcO₄ ^- /ReO₄ ^- Removal from Acidic and Alkaline Nuclear Wastes.

ABSTRACT: The selective removal of the β-emitting pertechnetate ion (⁹⁹ TcO₄ ^- ) from nuclear waste streams is technically challenging. Herein, a practical approach is proposed for the selective removal of ⁹⁹ TcO₄ ^- (or its surrogate ReO₄ ^- ) under extreme conditions of high acidity, alkalinity, ionic strength, and radiation field. Hollow porous N-doped carbon capsules loaded with ruthenium clusters (Ru@HNCC) are first prepared, then modified with a cationic polymeric network (R) containing imidazolium-N⁺ units (Ru@HNCC-R) for selective ⁹⁹ TcO₄ ^- and ReO₄ ^- binding. The Ru@HNCC-R capsules offer high binding affinities for ⁹⁹ TcO₄

SUBMITTER: Liu X 

PROVIDER: S-EPMC10602505 | biostudies-literature | 2023 Oct

REPOSITORIES: biostudies-literature