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Synthesis of Magnetic Nanocomposite Core–Shell Fe3O4@MCM-41-NH2 and its Application for Removal of Congo Red from Aqueous Solutions

  • E. Khaledyan
  • K. Alizadeh
  • Y. Mansourpanah
Research Paper
  • 32 Downloads

Abstract

A core–shell Fe3O4@MCM-41-NH2 was synthesized as a magnetic mesoporous nanocomposite was used as an adsorbent for the effective and rapid removal of anionic dye, Congo red. The Fe3O4@MCM-41-NH2 nanocomposites were characterized by FT-IR, SEM, TEM and XRD. The selected removal conditions obtained by a central composite design under response surface methodology were: pH 4.0, mass of adsorbent 0.01 g, stirring time 2.84 min and dye concentration 15 mg L−1. Under these conditions maximum dye removal efficiency obtained was about 95.12%. The adsorption isotherms at different temperatures were fitted well with Langmuir model. Various kinetics models were examined and the results showed that pseudo-second-order could be the best model for the adsorption rate.

Keywords

Congo red Adsorption Core–shell magnetic mesoporous nanocomposite Central composite design Removal 

Notes

Acknowledgements

Authors appreciatively acknowledge the financial support of the University of Lorestan.

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Copyright information

© Shiraz University 2018

Authors and Affiliations

  1. 1.Department of ChemistryLorestan UniversityKhorramabadIran

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