Akademik Məlumat İdarəetmə Sistemi
Chemical Review and Letters, vol.7, no.7, pp.701-711, 2024 (Scopus)
In this research, a series of Fe3O4 and Fe3O4/Graphene oxide nanocompounds with various contents of graphene in the composite were prepared using iron chloride and graphene oxide as the starting materials. The synthesized Fe3O4/Graphene oxide was characterized by XRD, SEM, EDX, FT-IR, and UV–visible spectroscopy. The photocatalytic and sonocatalytic activities of the synthesized samples were investigated by the degradation of malachite green as a cationic dye. Fe3O4/Graphene oxide was found to be more efficient at photodegradation of malachite green. The photodegradation reaction fit well to a Langmuir-Hinshelwood kinetic model implying the reaction rate is depended on initial adsorption step. The quantities of the adsorption equilibrium constant (Kdye) and the kinetic rate constant of surface reaction (kc) were 0.91 (mg L−1)−1 and 2.32 mg L−1 min−1, respectively. Based on results, the rate constant of sonocatalysis was higher than that of photocatalysis. Finally, it has been concluded that graphene when employed as catalytic support for Fe3O4 increases its catalytic activity.