Enrichment of uranium in seawater by glycine cross-linked graphene oxide membrane

•Membrane separation technology was rarely used for seawater uranium enrichment.•A new typed GO-Gly composited membrane is fabricated.•GO-Gly membrane is stable with d suitable for uranium enrichment.•The membrane shows distinct rejection and enrichment properties toward uranium.•GO-Gly membrane has the potential for uranium enrichment in seawater.