Issue 2, 2022

Magnetic MOF-808 as a novel adsorbent for toxic metal removal from aqueous solutions

Abstract

Mercury (Hg) in water is a global concern due to its high toxicity and bioaccumulation in the food chain, which severely affects the environment and human health. In this work, a magnetic zirconium metal–organic framework (Zr-MOF@Fe3O4) has been synthesized for Hg(II) removal. The Zr-MOF@Fe3O4 demonstrated the maximum adsorption capacity of 303 mg g−1 at pH 6. The possible mechanism was confirmed by spectroscopic analysis, which indicated that free –COOH groups and Zr–OH were responsible for adsorption. The adsorbent showed high uptake capacity for Hg(II), Pb(II), and Cd(II) ions in a multi-element solution. The regeneration of the material was successfully carried out with NaOH solution for five cycles. Thus, the study has reported a highly efficient adsorbent for the removal of toxic heavy metals from aqueous solutions.

Graphical abstract: Magnetic MOF-808 as a novel adsorbent for toxic metal removal from aqueous solutions

Supplementary files

Article information

Article type
Paper
Submitted
18 yan 2022
Accepted
29 mar 2022
First published
07 apr 2022
This article is Open Access
Creative Commons BY-NC license

Environ. Sci.: Adv., 2022,1, 182-191

Magnetic MOF-808 as a novel adsorbent for toxic metal removal from aqueous solutions

R. Paz, H. Viltres, N. K. Gupta, A. Romero-Galarza and C. Leyva, Environ. Sci.: Adv., 2022, 1, 182 DOI: 10.1039/D2VA00010E

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