L-serine-assisted synthesis of Fe3O4 impregnated N-doped RGO composites via a facile electrostatic self-assembly for synergistic adsorption of Rhodamine B

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In this work, Fe3O4 nanoparticles impregnated N-doped RGO (Fe3O4-N-RGO) nanocomposite was synthesized through one-pot electrostatic self-assembly of magnetite nanoparticles (Fe3O4 NPs) on N-doped RGO sheet in the presence of L-serine (L-Ser) as a surface functionalizing and reducing agent. The surface property, structure, morphology, and magnetic properties of as-prepared Fe3O4-N-RGO nanocomposite were characterized by FTIR spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), transmission electron microscope (TEM), vibrating sample magnetometer (VSM), and electron paramagnetic resonance spectroscopy (EPRS). The XRD results were indicated the formation of high crystalline spinel type Fe3O4 NPs. The Fe3O4 nanoparticles with average sizes of 12 nm were formed uniformly on reduced graphene sheets. The Fe3O4-N-RGO nanocomposite was used as an adsorbent to remove Rhodamine B dye from aqueous solution. The nanocomposite shows excellent ability to adsorb organic pollutants and can be easily manipulated in a magnetic field for separation. The results suggest that Fe3O4-N-RGO nanocomposite has great potential for efficient removal of organic dyes pollutants from aqueous solution.

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Thanks to the Government of Ethiopia and Department of Inorganic and Analytical Chemistry, Andhra University, to support this research work. The authors also thanks to Advanced Analytical Laboratory, Andhra University, for their support in carrying out this research work regarding SEM-EDS, FT-IR, and XRD analysis.

Funding information

The chemical and characterization cost of the research work was covered by Andhra University and Ministry of Education of Ethiopia under the regular fund for graduate students.

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Correspondence to Neway Belachew.

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Not applicable. The study does not involve human or animal subjects.

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Belachew, N., Devi, D.R. & Basavaiah, K. L-serine-assisted synthesis of Fe3O4 impregnated N-doped RGO composites via a facile electrostatic self-assembly for synergistic adsorption of Rhodamine B. emergent mater. (2020) doi:10.1007/s42247-019-00064-2

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  • Nanocomposites
  • Fe3O4
  • Self-assembly
  • Reduced graphene oxide
  • L-serine
  • Adsorption