Polyacrylamide-grafted magnetic reduced graphene oxide nanocomposite: preparation and adsorption properties

Abstract

Magnetic reduced graphene oxide/polymer nanocomposites were prepared by in situ polymerization and grafting of polyacrylamide on the surface of functionalized magnetic reduced graphene oxide (rGO). Graphene oxide nanosheets were decorated with Fe3O4 nanoparticles, reduced and functionalized with 3-(trimethoxysilyl)propyl methacrylate, and then grafted with polyacrylamide. Grafting of polyacrylamide makes magnetic rGO hydrophilic and highly water dispersible. The prepared material was used as adsorbent for removal of an anionic dye, Congo red, and a maximum adsorption capacity up to 166.7 mg g−1 was obtained. The kinetics and isotherm of adsorption and the effect of experimental condition on adsorption capacity were also investigated.

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Funding

The authors are grateful for the financial support from the Sharif University of Technology, Grant Program (G940607).

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Correspondence to Ali Pourjavadi.

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Pourjavadi, A., Nazari, M., Kohestanian, M. et al. Polyacrylamide-grafted magnetic reduced graphene oxide nanocomposite: preparation and adsorption properties. Colloid Polym Sci 297, 917–926 (2019). https://doi.org/10.1007/s00396-019-04506-5

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Keywords

  • Graphene oxide
  • Magnetic nanoparticles
  • Polymer grafting
  • Dye adsorption