Poly(amidoxime)/polyzwitterionic semi-interpenetrating network hydrogel with robust salt-shrinkage resistance for enhanced uranium extraction from seawater

•Poly(amidoxime)/Polyzwitterionic adsorbent is fabricated for uranium extraction.•The adsorbent can be easily prepared by free-radical polymerization.•The adsorbent shows high salt shrinkage resistance.•The adsorbent exhibits excellent antibacterial activity.•A high uranium extraction capacity of 6....

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