Mechanism of a green graphene oxide reduction with reusable potassium carbonate

Abstract

The mechanism of a green reduction of graphene oxide by potassium carbonate as recycling deoxidizer has been revealed.

Role of RGO support and irradiation source on the photocatalytic activity of CdS–ZnO semiconductor nanostructures

“…7. The FTIR spectrum of GO shows strong broad absorption peaks at 3309 cm −1 and 1404 cm −1 , which could be attributed to the O–H stretching vibrations and deformation vibrations of intercalated water [50]. Absorption peaks at 1032 cm −1 , 1229 cm −1 and 1725 cm −1 are the characteristic stretching vibrations of C–O, epoxy C–O, and C=O of carbonyl groups, respectively, which are present at the edges of the GO sheets [51].…”

Multilayer‐Functionalized Reduced Graphene Oxide Decorated with Gold Nanoparticles as a Designed Nanonanocatalyst for the Selective Oxidation of Cyclohexene by Molecular Oxygen in a Solvent‐Free System

“…The Fourier‐transform infrared spectroscopy (FTIR) of GO (Figure a) shows the peaks at 1047, 1613, 1721 and 3383 cm −1 , which can be attributed to the epoxide, C=C, C=O, and OH stretching vibrations respectively . The FTIR spectrum conforms successful synthesis of RGO from GO (Figure b), by the removal of principal peaks of epoxide groups and a noticeable decrease in the intensities of peaks at 1721 and 3383 cm −1 that show a large fraction of the C=O and OH groups were removed . After modification of RGO with 4‐aminothiophenol, its FT‐IR spectrum had shown some new bands at 1060 and 1307 cm −1 which attributed to bending and stretching vibration of C‐N and C‐S bands, respectively.…”

Electrocatalytic Water Splitting and CO2 Reduction: Sustainable Solutions via Single‐Atom Catalysts Supported on 2D Materials

“…By detecting the changes in the frequency and intensity of the chemical bonding vibration with proper calibration, one can deduce the physical and chemical properties of the catalytically active centers. It is widely used in the identification of the defects and the results of functionalization of graphene derivatives . The FTIR spectroscopy may be used for detecting the ensuing intermediate species during a catalytic reaction.…”

“…It is widely used in the identification of the defects and the results of functionalization of graphene derivatives. [67][68][69] The FTIR spectroscopy may be used for detecting the ensuing intermediate species during a catalytic reaction. The various types of FTIR spectroscopy can offer qualitative and quantitative information of the SACs on the support materials in the catalytic reactions.…”