Site differentiation strategy for selective strontium uptake and elution within an all-inorganic polyoxoniobate framework.

ABSTRACT: Selective uptake and elution of trace amounts of hazardous radioactive ⁹⁰Sr from large-scale high-level liquid waste (HLW) is crucial for sustainable development. Here, we propose a site differentiation strategy, based on the presence of distinct selective metal capture sites (concavity site and tweezer site) within the giant polyoxoniobate (PONb) nanoclusters of an all-inorganic PONb framework (FZU-1). Through this strategy, FZU-1 can not only effectively remove 98.9% of Sr²⁺ from simulated nuclear liquid waste, performing best among the reported Sr adsorbents, but also achieve desorption of adsorbed Sr²⁺ ions by selectively loading Na⁺ ions, thus enabling the recycling of FZU-1. Based on the well-defined single-crystal structures and theoretical studies, it can be revealed tha

SUBMITTER: Liu YX 

PROVIDER: S-EPMC11480440 | biostudies-literature | 2024 Oct

REPOSITORIES: biostudies-literature