Issue 3, 2024

Green synthesis of a potential magnetic and mesoporous EG-nZVI/CA-MCM41 nanocomposite for reductive sorption of europium

Abstract

Europium is the “rarest” rare-earth element in the earth's crust. Nanocomposite-mediated adsorptive extraction of europium is very promising due to its cost-effectiveness and environmental acceptability. A newfangled ethylene glycol nano zerovalent iron supported citric acid modified MCM41 (EG-nZVI/CA-MCM-41) nanocomposite was synthesized employing green tea extracts. The structural and morphological characterization of the prepared nanomaterials was carried out by XRD, FTIR, XPS, FE-SEM, and EDS analysis. Under optimal conditions (i.e., pH 5.2, 40 °C), the nanocomposite could remove 91.5% Eu(III) from an initial dose of 750 mg L−1, yielding an extraordinarily high sorption capacity of 714.28 mg g−1. While the best fit Freundlich isotherm (R2: 0.955) suggests monolayer adsorption, the kinetic analysis indicates a chemisorption process. Rapid adsorption through electrostatic interaction followed by reduction at the nZVI surface could be the mechanism for Eu(III) removal. The green synthesized nanocomposite also has significant reusability capacity for up to 3 consecutive cycles.

Graphical abstract: Green synthesis of a potential magnetic and mesoporous EG-nZVI/CA-MCM41 nanocomposite for reductive sorption of europium

Supplementary files

Article information

Article type
Paper
Submitted
01 nov. 2023
Accepted
27 ene. 2024
First published
31 ene. 2024

Environ. Sci.: Nano, 2024,11, 855-869

Green synthesis of a potential magnetic and mesoporous EG-nZVI/CA-MCM41 nanocomposite for reductive sorption of europium

A. Jena, B. Mahanty, D. Deka, P. K. Sahoo, S. Pradhan, P. R. Rout, S. Mishra and N. K. Sahoo, Environ. Sci.: Nano, 2024, 11, 855 DOI: 10.1039/D3EN00785E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements