Cerium organic frameworks as green pollution preventing materials for dye removal

Document Type : Original Article

Authors

1 National Research Center, Dokki, Cairo, Egypt

2 Textile Research and Technology Institute, National Research Centre

Abstract

Cerium organic frameworks are presented in this work as pollutant preventing materials for the removal of reactive red 195 dye (RR 195) from aqueous solutions. Anthranilic acid and β-diketone as ligand sources were used in the separate state for the preparation of the cerium complexes metal organic frameworks (MOF1- MOF2) with a stoichiometric ratio 1:2 The prepared MOFs were used as adsorbent materials for decontamination of coloured solutions.

The prepared materials were fully characterized by SEM, EDX, FTIR, surface area and zeta potential. The adsorption conditions (adsorption time, adsorbent loading, pH and dye concentration) were thoroughly optimized. The maximum adsorption capacity of the tertiary complex was more than that of the binary complexes. Different isothermal models (Langmuir, Freundlich, Temkin, and Dubinin–Kaganer–Radushkevich) have been studied. The physic-sorption adsorption of RR 195 behaviour is more fit to the Langmuir isotherm model through the pseudo-second-order kinetic model. That study introduces the promising cerium organic framework as pollution preventing material through dye removal.

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Egyptian Journal of Chemistry
Volume 65, Issue 131 - Serial Number 13
Special Issue: Chemistry and Global Challenges (Part A)
December 2022
Pages 1217-1230

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History

  • Receive Date: 13 October 2022
  • Revise Date: 24 October 2022
  • Accept Date: 30 October 2022

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