Fabrication of chromium-imprinted polymer: A real magneto-selective sorbent for the removal of Cr(vi) ions in real water samples

Sagar Kumar, Esra Alveroǧlu, Aamna Balouch*, Farah Naz Talpur, Muhammad Saqaf Jagirani, Abdullah, Ali Muhammad Mahar, Abdul Hameed Pato, Dadu Mal, Shanker Lal

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Citations (Scopus)

Abstract

In this research work, we report a novel chromium-based magnetic ion-imprinted polymer for the selective and sensitive detoxification of hexavalent chromium ions from aqueous systems. A simple and facile co-precipitation method was applied for the fabrication of an amine-functionalized silica-capped iron oxide nanoparticle-based ion-imprinted polymer using dichromate (Cr2O7)2- ions as a template, 4-vinylpyradine as a ligand, methyl methacrylate as a functional monomer, ethylene glycol methacrylate (EGDMA) as a crosslinker, and α-α′-azoisobisbutyronitrile (AIBN) as an initiator. Different analytical techniques were used for the characterization of the synthesized materials, including SEM, XRD EDX, and FTIR. To achieve the maximum adsorption capacity, different parameters were optimized during the adsorption and desorption study including pH, adsorbent dose, temperature, analyte concentration, and shaking speed. According to the results, the data follows the Langmuir isotherm model, while the kinetic study was well described by the pseudo-second-order model. The maximum adsorption capability of Cr-MIIP was determined to be 169.49 mg g-1. The relative standard deviation and limit of detection and quantification were found to be 0.81 μg L-1 and 2.7 μg L-1 for this method. Thus, the high adsorption capacity, selectivity, ease of separation, and time-saving property of the Cr(vi)-imprinted silica-amine-functionalized magnetic polymer make it an efficient adsorbent for the selective remediation of hexavalent chromium ions from water bodies.

Original languageEnglish
Pages (from-to)18668-18678
Number of pages11
JournalNew Journal of Chemistry
Volume44
Issue number43
DOIs
Publication statusPublished - 21 Nov 2020

Bibliographical note

Publisher Copyright:
© 2020 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

Funding

Dr Aamna Balouch is highly thankful to the Scientific and Technological Research Council of Turkey (TUBITAK) for funding this project through ‘‘2221-visiting scientist Fellowship Programme for Foreign Citizens’’.

FundersFunder number
TUBITAK
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

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