Feasibility of graphene–polymer composite membranes for forward osmosis applications

Abstract

Preparation of sandwich-like graphene-polymer composite membranes by stacked multilayer graphene, polyethyleneimine and ethylenediamine.

rGO induced enhanced antifouling properties in electrospun PVA–rGO nanocomposite membranes

“…As a result, the hydroxyl functional groups are reduced, which reduces the O–H stretching intensity at 3200 cm −1 –3500 cm −1 . 24 This clearly indicates the membrane is cross-linked properly. In case of PVA–rGO nanofibrous membrane, the peak intensity is further diminished because the intra-chain hydrogen bondings are partially adsorbed by the functional groups of rGO.…”

“…23 Graphene has a two-dimensional planar structure and is hydrophobic, which improves the mechanical, thermal, electrical, and functional properties of the membranes. 24 However, the inherent hydrophobicity of graphene and graphite makes them less attractive for the fabrication of hydrophilic membranes for oily wastewater treatment. Graphene oxide (GO) is hydrophilic due to the presence of some strongly polarized functional groups.…”

Shellac-mediated laser-induced reduced graphene oxide film on paper and fabric: exceptional performance in flexible fuel cell, supercapacitor and electrocardiography applications

“…4 Graphene has various unique properties, such as 2 Â 10 5 cm 2 V À1 s À1 electron mobility rate, B125 GPa fracture strength, B1 TPa tensile strength, B5000 W mK À1 thermal conductivity, and more than 2630 m 2 g À1 of the theoretical specific surface area (SSA). 5,6 Despite such unique properties of graphene and its progressive synthesis techniques, began the race for its potential findings. 7,8 Numerous kinds of graphene-derived materials, including graphene oxide (GO), reduced graphene oxide (rGO), multilayered graphene, graphene composites, and graphene ribbons, have been synthesized for prominent specific applications.…”

“…4 Graphene has various unique properties, such as 2 × 10 5 cm 2 V −1 s −1 electron mobility rate, ∼125 GPa fracture strength, ∼1 TPa tensile strength, ∼5000 W mK −1 thermal conductivity, and more than 2630 m 2 g −1 of the theoretical specific surface area (SSA). 5,6…”