Functional groups in graphene oxide

Abstract

Graphene oxide has aroused significant interest for a range of applications owing to their outstanding physico-chemical properties. Specifically, the presence of a large number of reactive chemical moieties such as...

3D printed membranes of polylactic acid and graphene oxide for guided bone regeneration

“…36 Additionally, the hydroxyl group not only enhances the interaction with polymer chains but also improves the stability and biocompatibility of the composites by facilitating hydrogen bonding with water molecules. 37,38 The hydrophilic nature of GO can lead to improved focal adhesion formation which is comparable to the native environment. 39 Moreover, the surface topography and stiffness act as biophysical cues that can promote different cell anchorage and mechanosensitive pathways, which produce cellular cytoskeleton rearrangement and trigger a cascade of transduction signals that modulate cell phenotypes.…”

ZIF-8/Graphene Oxide Hybrid Membranes as Breathable and Protective Barriers against Chemical Warfare Agents

“…The density of oxygen-containing functional groups on GO plays a crucial role in the fabrication of dense, continuous, uniform, and thin ZIF-8 membranes. Because GO is a two-dimensional material with oxygen-containing functional groups, it is considered a good template to grow nanosized materials, as precursors bind to the oxygen-containing functional groups. , However, because most oxygen-containing functional groups are located at the edge sites of GO, , the large-flake GO synthesized using the conventional Hummer’s method has few oxygen-containing functional groups, resulting in the sparse growth of ZIF-8 crystals. Thus, we controlled the size of the GO flakes (and consequently the density of functional groups) through a simple and scalable horn sonication method. , …”

Functionalized graphene oxide-based lamellar membranes for organic solvent nanofiltration applications

“…[21][22][23][24][25][26][27][28] The GO nanosheets have the unique combination of hydrophobic and hydrophilic domains along with hydroxyl, epoxide and carboxyl groups on its basal plane and edges. [29][30][31] Such functional groups can attract water molecules and swell in aqueous environment. Therefore, these membranes rapidly delaminated and were destroyed during wastewater separation and purication processes.…”