A graphene oxide membrane with highly selective molecular separation of aqueous organic solution

Abstract

A graphene oxide (GO) membrane is supported on a ceramic hollow fiber prepared by a vacuum suction method. This GO membrane exhibited excellent water permeation for dimethyl carbonate/water mixtures through a pervaporation process. At 25 C and 2.6 wt % feed water content, the permeate water content reached 95.2 wt % with a high permeation flux (1702 g m-2 h -1). On a roll: A graphene oxide (GO) membrane (see picture, dark gray) was prepared on a ceramic hollow fiber (light gray) by a vacuum suction method. The resulting GO membrane exhibits excellent selective water permeation of aqueous dimethyl carbonate solution (water: purple; Me2CO 3: red; scale bar: 1.5 μm). © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.