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Nickel and iron-based metal-organic frameworks for removal of organic and inorganic model contaminants.
- Source :
-
Environmental research [Environ Res] 2022 Sep; Vol. 212 (Pt B), pp. 113164. Date of Electronic Publication: 2022 Apr 06. - Publication Year :
- 2022
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Abstract
- Metal-organic frameworks (MOFs) are a promising class of porous nanomaterials in the field of environmental remediation. Ni-MOF and Fe-MOF were chosen for their advantages such as structural robustness and ease of synthesis route. The structure of prepared MOFs was characterized using FE-SEM, XRD, FTIR, and N <subscript>2</subscript> adsorption-desorption. The efficiency of MOFs to remove organic model contaminants (anionic Alizarin Red S (ARS) and cationic malachite green (MG) and inorganic fluoride was studied. Fe-MOF and Ni-MOF adsorbed 67, 88, 6% and 32, 5, and 9% of fluoride, ARS, and MG, respectively. Further study on ARS adsorption by Fe-MOF showed that the removal efficiency was high in a wide range of pH from 3 to 9. Moreover, dye removal was directly increased by adsorbent mass (0.1-0.75 g/L) and decreased by ARS concentration (25-100 mg/L). The pseudo-first-order kinetic model and Langmuir isotherm model with a q <subscript>max</subscript> of 176.68 mg/g described the experimental data well. The separation factor, K <subscript>L,</subscript> was in the range of 0-1, which means the adsorption process was favorable. In conclusion, Fe-MOF showed remarkable adsorption of organic and inorganic model contaminants.<br /> (Copyright © 2022 Elsevier Inc. All rights reserved.)
Details
- Language :
- English
- ISSN :
- 1096-0953
- Volume :
- 212
- Issue :
- Pt B
- Database :
- MEDLINE
- Journal :
- Environmental research
- Publication Type :
- Academic Journal
- Accession number :
- 35398078
- Full Text :
- https://doi.org/10.1016/j.envres.2022.113164