Morphological changes and covalent reactivity assessment of single-layer graphene oxides under carboxylic group-targeted chemistry

Morphological and chemical features of nano and macroscale carbons affecting hydrogen peroxide decomposition in aqueous media

“…No impurities were detected by UV-Visible or fluorescence spectroscopic analysis of the leachates implying that the as-supplied samples were clean. SLGO used behaved in a similar fashion to that reported elsewhere in terms of solubility and sheet size [21,22].…”

“…7.2 meq g À1 ), is greater than that of CNTs and CNT ox . It has been noted in a previous study that the suspension stability of graphene oxides was also linked to the pH of its environment, where SLGO eventually agglomerates in both excess acidic and alkali aqueous solution and led to conformational changes of the sheet structure [21]. It was also reported that an excess of acid, alkali and salt can destabilize the sheets surface negative charge, facilitating agglomeration of the sheets in solution [35].…”

pH-driven physicochemical conformational changes of single-layer graphene oxide

“…thionyl chloride, then amidation), albeit with degradation of the graphene lattice, but only 3-5% in aqueous solution (carbodiimide, then N-hydroxysuccinimide activated amidation) 9,10 and indicated that morphological changes of the SLGO sheets may be the principal cause. 11 Herein, we demonstrate how these effects occur.…”

Starch Derived Nanosized Graphene Oxide Functionalized Bioactive Porous Starch Scaffolds

“…It has abundant functional groups such as carboxyl, hydroxyl, and epoxy groups on its basal planes and edges. That enables conjugation of GO with various systems, imparting GO with multifunctionalities for diverse biological and medical applications. GO has been covalently attached to polymer chains such as poly(vinyl alcohol), polysebacic anhydride, poly( N ‐isopropylacrylamide), and poly(methyl methacrylate), via esterification, resulting in more stable GO‐functionalized nanocomposites.…”