Chemical Review and Letters

Influence of graphene oxide on the catalytic activity of Fe3O4 nanoparticles

Document Type : Research Article

Authors

Robab Mohammadi 1
Rovnag Rzayev 2

1 Department of Chemistry, Payame Noor University, PO box 19395-3697, Iran

2 Composite Materials Scientific Research Center of Azerbaijan State University of Economics (UNEC), 194 M.Mukhtarov str. Baku, Azerbaijan

https://doi.org/10.22034/crl.2024.461585.1355
Abstract
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.

Keywords

Fe3O4/Graphene oxide
Photodegradation
Sonodegradation
Graphene content
Kinetic model

Subjects

Chemical Review and Letters
Volume 7, Issue 4 - Serial Number 4
September and October 2024
Pages 701-711

  • Receive Date 14 June 2024
  • Revise Date 16 August 2024
  • Accept Date 18 August 2024

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