Graphene Oxide: A New Platform for High-Performance Gas- and Liquid-Separation Membranes

摘要

In recent times, graphene and graphene oxide have been of intense interest for a broad spectrum of applications, including field-effect transistors, paper-like materials, polymer nanocomposites, capacitors, batteries, and separation membranes for gas and water purification. Regarding the last two applications, graphene oxide (GO) is the focus of two very recent studies by Joshi et al. and Kim et al., who reported breakthrough discoveries in the small-molecule permeation properties of GO. Kim et al. reported highly permeable and selective GO membranes for separating mixtures of gases of industrial relevance, whereas Joshi et al. described the permeation of aqueous solutions of ions and neutral molecules through GO, reporting "ultrafast" transport properties.