Synthesis of V2O5 flowers/reduced graphene oxide mixtures for removal of hydrogen sulphide gas

This paper describes the combination of reduced graphene oxide (rGO) and V2O5 flower and its ability to adsorb H2S. Graphite oxide was prepared using the Hummer method and then reduced to graphene oxide. The V2O5-rGO mixture was synthesised by the hydrothermal method, and the variation in the V2O5:GO ratio was studied to evaluate its influence on the structure of the material. The amount of rGO in the mixture varied from 2% to 20% according to the mass ratio of rGO : V2O5 used for the hydrothermal process. Field emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and fourier-transform infrared spectroscopy (FTIR) were used to analyse the morphology, crystal structure, and chemical structure of V2O5-rGO, respectively. The V2O5-rGO mixture consists of 1-2 μm in diameter V2O5 flowers covered by layers of rGO. The V2O5-rGO mixture has the highest adsorption capacity of 2.64 mg/g after 50 min of adsorption.