Graphene oxide–polybenzimidazolium nanocomposite anion exchange membranes for electrodialysis

Abstract

Reaching beyond the upper limits of electromembrane desalination processes with novel graphene-based nanocomposite anion exchange membranes.

Poly(ionic liquid) composites

“…The GO-based nanocomposite AEMs demonstrated excellent potential for electrodialysis with a permselectivity of 0.99 at a loading content of 1% GO. 113…”

Effective Dye Degradation by Graphene Oxide Supported Manganese Oxide

“…GO contains reactive oxygen functional groups (hydroxyl, carboxyl, epoxy groups) attached to an sp 2 /sp 3 hybridized carbon network that provides hydrophilic character and chemical reactivity [24][25][26]. It is a fact that GO has an important impact on many applications nowadays, such as batteries [27], nanofiltration [28], electrodialysis [29], imaging [30], etc. GO-MnO 2 nanocomposites are easier to separate from water, and their high conductivity can accelerate electron transfer [31,32], which is beneficial for the oxidation of organic molecules.…”

Functionalizing graphene oxide framework membranes with sulfonic acid groups for superior aqueous mixture separation

“…Since the formation of the GO laminar membrane is mainly based on the interlamellar π-π and hydrogen bonding interactions, [18][19] periodically bridging the GO nanosheets by stronger interactions such as covalent bonding to form an interconnected graphene oxide framework (GOF) membrane is a judicious strategy for restraining the swelling and enhancing the stability. [20][21][22][23] Hung and co-workers obtained various diamine crosslinked GOF membranes with d-spacing from 0.93 to 1.09 nm in the wet state whereas that of the control GO membrane increased from 0.85 to 1.31 nm. 14 Sun et al employed thiourea to crosslink GO, resulting in a narrowed 2D nanochannel.…”