Magnetic Fe3O4-Ag0 nanocomposites for effective mercury removal from water

Vassilis J. Inglezakis; Aliya Kurbanova; Anara Molkenova; Antonis A. Zorpas; Timur Sh Atabaev

doi:10.3390/su12135489

Magnetic Fe₃O₄-Ag⁰ nanocomposites for effective mercury removal from water

Vassilis J. Inglezakis, Aliya Kurbanova, Anara Molkenova, Antonis A. Zorpas^*, Timur Sh Atabaev

^*Corresponding author for this work

Chemical And Process Engineering

Research output: Contribution to journal › Article › peer-review

24 Citations (Scopus)

21 Downloads (Pure)

Abstract

In this study, magnetic Fe₃O₄ particles and Fe₃O₄-Ag⁰ nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg²⁺ from water. Characterizations showed that the Fe₃O₄ 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 Hg²⁺ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe₃O₄-Ag0 and 28 mg/g for the bare Fe₃O₄. The removal mechanism is complex, involving Hg²⁺ adsorption and reduction, Fe2+ and Ag0 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 Fe₃O₄-Ag⁰ nanocomposites attractive materials for the removal of Hg²⁺ from water

Original language	English
Article number	5489
Journal	Sustainability (Switzerland)
Volume	12
Issue number	13
DOIs	https://doi.org/10.3390/su12135489
Publication status	Published - 1 Jul 2020

Funding

This research was funded by Nazarbayev University Grant Number 110119FD4536 and the APC was funded by the same project. The authors wish to thank the operators of Nazarbayev University Core Facilities for their help.

Keywords

amalgamation
magnetite
mercury
nanocomposites
silver

Access to Document

10.3390/su12135489Licence: CC BY 4.0

Inglezakis-etal-Sustainability-2020-Magnetic-Fe3O4-Ag0-nanocomposites-for-effective-mercuryFinal published version, 2.2 MBLicence: CC BY 4.0

Cite this

@article{b9cb0176e7814d65915c2063b3af294c,

title = "Magnetic Fe3O4-Ag0 nanocomposites for effective mercury removal from water",

abstract = "In this study, magnetic Fe3O4 particles and Fe3O4-Ag0 nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg2+ from water. Characterizations showed that the Fe3O4 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 Hg2+ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe3O4-Ag0 and 28 mg/g for the bare Fe3O4. The removal mechanism is complex, involving Hg2+ adsorption and reduction, Fe2+ and Ag0 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 Fe3O4-Ag0 nanocomposites attractive materials for the removal of Hg2+ from water",

keywords = "amalgamation, magnetite, mercury, nanocomposites, silver",

author = "Inglezakis, \{Vassilis J.\} and Aliya Kurbanova and Anara Molkenova and Zorpas, \{Antonis A.\} and Atabaev, \{Timur Sh\}",

year = "2020",

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doi = "10.3390/su12135489",

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T1 - Magnetic Fe3O4-Ag0 nanocomposites for effective mercury removal from water

AU - Inglezakis, Vassilis J.

AU - Kurbanova, Aliya

AU - Molkenova, Anara

AU - Zorpas, Antonis A.

AU - Atabaev, Timur Sh

PY - 2020/7/1

Y1 - 2020/7/1

N2 - In this study, magnetic Fe3O4 particles and Fe3O4-Ag0 nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg2+ from water. Characterizations showed that the Fe3O4 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 Hg2+ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe3O4-Ag0 and 28 mg/g for the bare Fe3O4. The removal mechanism is complex, involving Hg2+ adsorption and reduction, Fe2+ and Ag0 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 Fe3O4-Ag0 nanocomposites attractive materials for the removal of Hg2+ from water

AB - In this study, magnetic Fe3O4 particles and Fe3O4-Ag0 nanocomposites were prepared by a facile and green method, fully characterized and used for the removal of Hg2+ from water. Characterizations showed that the Fe3O4 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 Hg2+ removal rate was very fast followed by a slow increase and the maximum solid phase loading was 71.3 mg/g for the Fe3O4-Ag0 and 28 mg/g for the bare Fe3O4. The removal mechanism is complex, involving Hg2+ adsorption and reduction, Fe2+ and Ag0 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 Fe3O4-Ag0 nanocomposites attractive materials for the removal of Hg2+ from water

KW - amalgamation

KW - magnetite

KW - mercury

KW - nanocomposites

KW - silver

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