Synthesis and characterization of graphene and functionalized graphene via chemical and thermal treatment methods

Abstract

Graphene oxide was chemically synthesized, functionalized with dodecyl amine and then reduced. The graphene oxide was also thermally reduced to obtain graphene. Different analyses were employed to structural characterization of the materials.

Conductive poly(vinylidene fluoride)/polyethylene/graphene blend‐nanocomposites: Relationship between rheology, morphology, and electrical conductivity

“…Conductive graphene nano‐platelets (GnP) were chosen owning to their great opportunities for enhancing the electrical and mechanical properties of polymeric nanocomposites . The GnP displays better conductive properties than the other carbon based conductive fillers such as CNT, because of their ultrahigh aspect ratio, excellent electrical conductivity and relatively low production cost …”

New functionalization of graphene oxide with N2O2ligand for efficient loading of Cu nanostructures as a heterogeneous nanocatalyst for the synthesis of β‐hydroxy‐1,2,3‐triazoles

“…Figure demonstrates the UV–visible spectra of GO, GO‐DADO and GO‐DADO‐Cu. The spectrum of the prepared GO has two peaks, at 232 and 306 nm, respectively, which are related to π → π* transitions of CO bonds and n → π* transitions of CO bonds, respectively . The UV–visible spectrum of GO‐DADO has just one weak peak at 270 nm which is attributed to π → π* transitions of CC.…”

“…In the FT‐IR spectrum of GO (Figure a), the peaks which appeared at 1733, 1624, 1229 and 1056 cm −1 correspond to CO, CC, COC and ‐OH groups, respectively. A broad peak at 3420 cm −1 was attributed to the OH stretching bands of hydroxyl (on the GO basal plane) and carboxylic acid groups (on the edges of GO nanosheets) . The spectrum in Figure b is related to the immobilized organic ligand (DADO) on the edges and the basal plane of GO.…”

“…A broad peak at 3420 cm −1 was attributed to the O H stretching bands of hydroxyl (on the GO basal plane) and carboxylic acid groups (on the edges of GO nanosheets). [22] The spectrum in Figure 1b is related to the immobilized organic ligand (DADO) on the edges and the basal plane of GO. The broad peak appearing at around 3256 cm −1 is ascribed to the stretching vibrations of amino groups (N H) of the DADO ligand.…”

“…π* transitions of C O bonds, respectively. [22] The UV-visible spectrum of GO-DADO has just one weak peak at 270 nm which is attributed to π ! π* transitions of C C. The red shift (232 to 270 nm) is attributed to the increase of sp 2 carbons, formed in the reaction of DADO organic ligand and the surface of GO.…”