10.57647/j.ijic.2025.1601.05

Synthesis and isotherm studies of nGO@nFe3O4 decorated with ZIF-8 for methylene blue removal

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  • Kaveh Pezeshk1,
  • Maryam Khavarpour*1,
  • Seyed Mohammad Vahdat2,
  • Seyed Meysam Baghbanian2,
  • Mehri Esfahanian3,
  1. Department of Chemical Engineering, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
  2. Department of Chemistry, Ayatollah Amoli Branch, Islamic Azad University, Amol, Iran
  3. Department of Chemical Engineering, Qaemshahr Branch, Islamic Azad University, Amol, Iran

Received: 2025-02-16

Revised: 2025-05-24

Accepted: 2025-05-28

Published in Issue 2025-05-29

Copyright (c) -1 Kaveh Pezeshk, Maryam Khavarpour, Seyed Mohammad Vahdat, Seyed Meysam Baghbanian, Mehri Esfahanian (Author)

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

How to Cite

Pezeshk, K., Khavarpour, M., Vahdat, S. M., Baghbanian, S. M., & Esfahanian, M. (2025). Synthesis and isotherm studies of nGO@nFe3O4 decorated with ZIF-8 for methylene blue removal. International Journal of Industrial Chemistry, 16(1). https://doi.org/10.57647/j.ijic.2025.1601.05
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Abstract

 As the use of dyes in various industries has increased, environmental pollution has also increased due to the discharge of their wastewater into the waters. Here, the nanographene oxide@nano Fe3O4 (nGO@nFe3O4) decorated with ZIF-8 was synthesized to remove methylene blue from aqueous solutions. Physicochemical, thermal, morphological, and magnetic properties of ZIF-8@nGO@nFe3O4 nanocomposite adsorbent were characterized by standard analyses. SEM analysis show a porous structure and  superposition of the layered structure of nGO@nFe3O4 which ZIF-8 was dispersed uniformly on or between the layers. Fine synthesis of the adsorbent was also confirm by FTIR. Results demonstrate the suitable growth of ZIF-8 on the surface of nGO@nFe3O4. The adsorbent possessed the appropriate magnetic ability and easily separated by a magnet. In addition, isotherm models of Langmuir, Freundlich,  Temkin, and Redlich-Peterson were studied. Results show that Langmuir isotherm is the better model for describing the adsorption process, so, the adsorbent possesses a homogeneous surface, and the adsorption process is monolayer.

Keywords

  • Methylene blue,
  • ZIF-8,
  • Nanographene oxide,
  • Magnetic,
  • Isotherm
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