High-performance CO2-philic graphene oxide membranes under wet-conditions

Abstract

Ultrathin graphene oxide (GO) (<5 nm) membranes were prepared by spin-casting onto microporous polymeric support membranes. GO membranes exhibited a highly CO₂ permeable character, which is suitable for CO₂ separation. In the presence of water vapour, high CO₂ selectivity (e.g., CO₂/H₂, CO₂/N₂, and CO₂/CH₄) was achieved by enhanced CO₂ sorption.