Highly Efficient Electrocatalytic Uranium Extraction from Seawater over an Amidoxime-Functionalized In-N-C Catalyst.

ABSTRACT: Seawater contains uranium at a concentration of ≈3.3 ppb, thus representing a rich and sustainable nuclear fuel source. Herein, an adsorption-electrocatalytic platform is developed for uranium extraction from seawater, comprising atomically dispersed indium anchored on hollow nitrogen-doped carbon capsules functionalized with flexible amidoxime moieties (In-N_x -C-R, where R denotes amidoxime groups). In-N_x -C-R exhibits excellent uranyl capture properties, enabling a uranium removal rate of 6.35 mg g^-1 in 24 h, representing one of the best uranium extractants reported to date. Importantly, In-N_x -C-R demonstrates exceptional selectivity for uranium extraction relative to vanadium in seawater (8.75 times more selective for the former). X-ray absor

SUBMITTER: Liu X 

PROVIDER: S-EPMC9376814 | biostudies-literature | 2022 Aug

REPOSITORIES: biostudies-literature