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Uranium adsorption capacity of PAO hydrogel membrane (m AAM:m PAO = 4:4) in uranium‐spiked seawater. a) Adsorption kinetics of hydrogel within different uranium concentrations. b) SEM images of the original PAO hydrogel and the U‐uptake hydrogel, respectively. (The photos are hydrogel membrane adsorbing different amounts of uranium. All scale bars in photos are 1.0 cm.)
