Facile synthesis of water-stable iron intercalated multi layered graphene nanocomposite with large magnetic moments as superior water pollutant remediators

•Zero-valent Iron (Fe0) nano-crystals intercalated within graphene (Gr) flakes is fabricated.•The Fe0/Gr formed as intercalated Fe0/Fe2O3 structure into expanded multi layered Gr.•Composite has a large magnetic moment and remarkable air and solution stability.•Remediation capability of Methyl Orange...

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Bibliographic Details
Published in:Synthetic metals 2019-09, Vol.255, p.116105, Article 116105
Main Authors: Ansari, N., Feghhi, F., Montazeri, M., Mohammadnejad, M., Sheykhifard, Z., Mohseni, S.M.
Format: Article
Language:English
Subjects:
Activated carbon
Dyes
Functional groups
Graphene
Iron
Magnetic graphene
Magnetic moments
Methylene blue
Nanocomposites
Nanocrystals
Nanotechnology
Pollutants
Remediation
Rhodamine
superparamagnetic
Synthesis
Wastewater treatment
water remediation
zero-valent iron
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Summary:•Zero-valent Iron (Fe0) nano-crystals intercalated within graphene (Gr) flakes is fabricated.•The Fe0/Gr formed as intercalated Fe0/Fe2O3 structure into expanded multi layered Gr.•Composite has a large magnetic moment and remarkable air and solution stability.•Remediation capability of Methyl Orange, Methylene Blue, Crystal Violet and Rhodamine B dye solutions is studied. Fabrication of the large magnetic moment, water stable, nanoscale zero-valent Iron (Fe0) as a desirable component for application in nanotechnology and multifunctional composite has shown to be a great challenge. Here, a facile, cost-effective, and green synthesis of Fe0 nano-crystals intercalated within graphene (Gr) flakes based on simultaneous Gr-exfoliation/Iron-deposition is demonstrated. The Fe0/Gr formed as intercalated Fe0/Fe2O3 structure into expanded multi layered Gr with a large magnetic moment and remarkable solution stability is used to remove pollutants from wastewater. We explore remediation capability of Methyl Orange (MO), Methylene Blue (MB), Crystal Violet (CV) and Rhodamine B (RhB) dye solutions. Application of this new nanocomposite for removing pollutants from dye water shows highly-efficient remediation for both cationic and anionic common azo dyes thanks to the sorption capability of iron in conjunction with activated carbon functional groups.
ISSN:0379-6779
1879-3290
DOI:10.1016/j.synthmet.2019.116105