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Scalable Production Method for Graphene Oxide Water Vapor Separation Membranes

  • Leonard S. Fifield (a1), Yongsoon Shin (a1), Wei Liu (a1) and David W. Gotthold (a1)

Abstract

Membranes for selective water vapor separation were assembled from graphene oxide suspension using techniques compatible with high volume industrial production. The large-diameter graphene oxide flake suspensions were synthesized from graphite materials via relatively efficient chemical oxidation steps with attention paid to maintaining flake size and achieving high graphene oxide concentrations. Graphene oxide membranes produced using scalable casting methods exhibited water vapor flux and water/nitrogen selectivity performance meeting or exceeding that of membranes produced using vacuum-assisted laboratory techniques. (PNNL-SA-117497)

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