Extraordinary water adsorption characteristics of graphene oxide

Abstract

The laminated structure of graphene oxide (GO) confers unique interactions with water molecules which may be utilised in a range of applications that require materials with tuneable hygroscopic properties.

Evaluation of fluorine and sulfonic acid co-functionalized graphene oxide membranes under hydrogen proton exchange membrane fuel cell conditions

“…32 Although the interlayer spacing under dry conditions differs slightly (see Table S2 †), the similar swelling behavior suggests that the maximum water uptake is nearly identical for all membranes (with the exception of TGO*), which is already documented for modied Hummers' GO. 50 It is noteworthy however to recall that the stability of F-TGO and SF-TGO in the wet state is superior to that of HGO and TGO (Fig. S2 †), despite the similar interlayer distances.…”

Graphene oxide quantum dots embedded polysulfone membranes with enhanced hydrophilicity, permeability and antifouling performance

“…Recently, graphene oxide (GO) has become a promising membrane material owing to its impressive separation performance [22][23][24][25]. GO membranes possess ultrafast water transport properties and extraordinary water adsorption characteristics [26,27]. GO sheets have also been proven to be effective nanofillers to improve the overall performance of polymeric UF membranes, due to their high aspect ratio, low density, easy functionalization and abundance of oxygen containing functional groups [28][29][30].…”

Effective Separation of CO2 Using Metal‐Incorporated rGO Membranes

“…Fortunately, the interaction between the oxygen‐functional groups on graphene oxide sheets and cations have been extensively studied, [ 36,37 ] as it is fundamental for applications such as energy storage and water purification. [ 38–40 ] Considering the value of transition metals for N 2 adsorption, we hypothesize that the incorporation of these metals into graphene oxide‐based membranes could enhance selectivity to N 2 . To test this hypothesis, we study the Fe and Cr incorporated reduced graphene oxide (rGO) membranes for gas separation.…”