A Novel Synthesis of the Graphene Oxide-Silver (GO-Ag) Nanocomposite for Unique Physiochemical Applications

Abstract

Graphene oxide-silver nanocomposite (GO-Ag) was fabricated via the sonochemical method, which shows unique physiochemical properties. Graphene oxide (GO) and silver nanoparticles (AgNPs) were synthesized by modified Hummer's and Chemical reduction methods, respectively. The synthesized nanocomposite was characterized using powder X-ray diffraction, Raman spectroscopy, and Fourier-transform infrared spectroscopy. The surface morphology of synthesized nanoparticles was studied using scanning electron microscopy and transmission electron microscopy. The thermoluminescence property of the nanocomposite was analyzed by irradiating the samples in gamma radiation at 1 kGy. Electrochemical reversibility of the GO-Ag nanocomposite was examined by cyclic voltammetry. The photocatalytic application of the nanocomposite was studied using degradation of methylene blue dye. Results reveal that doping of AgNPs on the GO surface not only improves its dye degradation property but also enhances its thermoluminescence property. This knowledge will be helpful in determining the antibacterial property of the GO-Ag nanocomposite in the future.

Synthesis and Characterization of Some Graphene Oxide Powders Used as Additives in Hydraulic Mortars

“…The literature data reveals that graphene oxide (GO), resulting from the graphite oxidation, is a versatile material, that can be successfully used in several activity fields, such as electronics, environment, biomedicine and why not, in construction [2][3][4]. The functional groups containing oxygen, i.e., hydroxyl (-OH), epoxy (-C-O-C), carbonyl (-C=O), carboxyl (-COOH), which are present both on the surface of GO sheets and on their edges [5][6][7][8], allow the GO functionalization. The silanization of GO, by functionalizing its reactive groups with organosilanes, can lead to an improvement of the properties of the construction materials in which they are introduced [9,10].…”

Hematite nanoparticles decorated nitrogen-doped reduced graphene oxide/graphitic carbon nitride multifunctional heterostructure photocatalyst towards environmental applications

“…S1, ESI†). 49 In the rGO XRD pattern, the peak shifting observed at 26.5° is assigned to the (002) diffraction plane, which is also the characteristic peak of NrGO (Fig. S1, ESI†).…”

Iron Oxide- and Copper Oxide-Decorated Chemically Reduced Graphene Oxide Composite as a Novel Electrode for Hybrid Supercapacitors

“…Figure illustrates the N 2 adsorption/desorption plot at 77 K and the average pore diameter distribution of FeO-CuO-RGO. From the figure, it is apparent that the composite displays a classic IV isotherm with a loop at a relatively high pressure ( P / P 0 ) from 0.4 to 0.9, indicating the formation of micropores . The calculated BET surface areas of GO, RGO, and FeO-CuO-RGO were 240.9, 180.3, and 168 m 2 /g, respectively.…”

“…From the figure, it is apparent that the composite displays a classic IV isotherm with a loop at a relatively high pressure (P/P 0 ) from 0.4 to 0.9, indicating the formation of micropores. 30 The calculated BET surface areas of GO, RGO, and FeO-CuO-RGO were 240.9, 180.3, and 168 m 2 /g, respectively. GO possesses a much higher surface area, which may have resulted from the formation of oxygenated groups.…”