Ion-selective uranium capture from seawater by UiO-66 metal-organic framework modified with amidoxime groups.

ABSTRACT: Seawater is a valuable source of uranium (U) resources, and harnessing it effectively can play a crucial role in promoting nuclear energy. However, current polymer-based adsorbents typically exhibit slow adsorption rates and insufficient selectivity. In this work, the efficient uranyl ion (UO₂ ²⁺) adsorbent (UiO-66-AO) was obtained from UiO-66-NH₂ through a simple and mild approach post synthesis modification (PSM). During the PSM process, not only the octahedral morphology (particle size ∼200 nm) but also the crystal structure of UiO-66-NH₂ was well maintained. The integration of amidoxime groups (AO) improved the selectivity and adsorption performance towards UO₂ ²⁺. According to the Langmuir model, the maximum adsorption

SUBMITTER: Ma L 

PROVIDER: S-EPMC12038888 | biostudies-literature | 2025 Apr

REPOSITORIES: biostudies-literature