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Magnetic Fe 3 O 4 -Ag 0 Nanocomposites for Effective Mercury Removal from Water

Author

Listed:
  • Vassilis J. Inglezakis

    (Environmental Science & Technology Group (ESTg), Department of Chemical &Materials Engineering, Nazarbayev University, Nur-Sultan 010000, Kazakhstan)

  • Aliya Kurbanova

    (The Environment & Resource Efficiency Cluster (EREC), Nazarbayev University, Nur-Sultan 010000, Kazakhstan)

  • Anara Molkenova

    (Department of Chemistry, Nazarbayev University, Nur-Sultan 010000, Kazakhstan)

  • Antonis A. Zorpas

    (Lab of Chemical Engineering & Engineering Sustainability, Faculty of Pure & Applied Science, Open University of Cyprus, GiannouKranidioti 33, Nicosia 2220, Cyprus)

  • Timur Sh. Atabaev

    (Department of Chemistry, Nazarbayev University, Nur-Sultan 010000, Kazakhstan)

Abstract

In this study, magnetic Fe 3 O 4 particles and Fe 3 O 4 -Ag 0 nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg 2+ from water. Characterizations showed that the Fe 3 O 4 particles are quasi-spherical with an average diameter of 217 nm and metallic silver nanoparticles formed on the surface with a size of 23–41 nm. The initial Hg 2+ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe 3 O 4 -Ag 0 and 28 mg/g for the bare Fe 3 O 4 . The removal mechanism is complex, involving Hg 2+ adsorption and reduction, Fe 2+ and Ag 0 oxidation accompanied with reactions of Cl − with Hg + and Ag + . The facile and green synthesis process, the fast kinetics and high removal capacity and the possibility of magnetic separation make Fe 3 O 4 -Ag 0 nanocomposites attractive materials for the removal of Hg 2+ from water.

Suggested Citation

  • Vassilis J. Inglezakis & Aliya Kurbanova & Anara Molkenova & Antonis A. Zorpas & Timur Sh. Atabaev, 2020. "Magnetic Fe 3 O 4 -Ag 0 Nanocomposites for Effective Mercury Removal from Water," Sustainability, MDPI, vol. 12(13), pages 1-10, July.
    • Handle: RePEc:gam:jsusta:v:12:y:2020:i:13:p:5489-:d:381593
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    Cited by:

    1. Belessiotis, George V. & Kontos, Athanassios G., 2022. "Plasmonic silver (Ag)-based photocatalysts for H2 production and CO2 conversion: Review, analysis and perspectives," Renewable Energy, Elsevier, vol. 195(C), pages 497-515.

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