Atomically Thin Graphene Membranes with Nanoscale Pores for Dialysis Based Separations

Atomically thin membranes from 2D materials offer unique opportunities for molecular separations with high permeance and high selectivity. Here, we report the fabrication of fully functional centimeter scale nanoporous (<2-3nm) atomically thin graphene membranes for molecular separation applications. Our work focuses on systematically addressing key challenges that have limited progress in field i.e. a) scalable nanopore formation methods including in-situ approaches, b) facile support casting, c) novel defect sealing methods and d) scalable manufacturing approaches. The synthesized nanoporous atomically thin membranes show higher selectivity and permeance (up to 100 times more) than state-of-the-art polymeric membranes and can be readily used for lab-scale dialysis.

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