Application of a new choline-imidazole based deep eutectic solvents in hybrid magnetic molecularly imprinted polymer for efficient and selective removal of naproxen from aqueous samples
A magnetic molecularly imprinted polymer (Fe3O4@MIP) with naproxen (as template) was successfully prepared by adding a co-solvent consisting of a choline-imidazole based deep eutectic solvent (ChCl-BuIM) during polymerisation. The morphological, functional group, and magnetic characteristics of th...
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Main Authors: | , , , , , , , |
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Format: | Article |
Language: | English |
Published: |
Elsevier
2021
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Subjects: | |
Online Access: | http://eprints.uthm.edu.my/1037/1/J11948_bef6a747948caa54502eec437e9dd1b2.pdf http://eprints.uthm.edu.my/1037/ https://doi.org/10.1016/j.matchemphys.2021.124228 |
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Summary: | A magnetic molecularly imprinted polymer (Fe3O4@MIP) with naproxen (as template) was successfully prepared
by adding a co-solvent consisting of a choline-imidazole based deep eutectic solvent (ChCl-BuIM) during polymerisation.
The morphological, functional group, and magnetic characteristics of the synthesised materials were
characterised by elemental analysis, Fourier transform-infrared spectroscopy, scanning electron microscopy, and
vibrating sample magnetometer. This hybrid Fe3O4@MIP-ChCl-BuIM material was used as a magnetic adsorbent
for efficient and selective removal of naproxen from wastewater samples. A batch adsorption study showed that
adsorption of naproxen onto the multilayer surface of the adsorbent through a chemisorption mechanism. The
data showed that the adsorption was feasible, spontaneous, and exothermic. The Fe3O4@MIP-ChCl-BuIM
removed more naproxen (93.2–97.1%) than Fe3O4@MIP without ChCl-BuIM (83.2–88.9%). This finding confirms
that the use of ChCl-BuIM improved both the selectivity and affinity of the MIP adsorbent towards naproxen.
Competitive recognition studies of the Fe3O4@MIP-ChCl-BuIM using naproxen and structurally similar
non-steroidal anti-inflammatory drugs revealed that the Fe3O4@MIP-ChCl-BuIM had high selectivity for naproxen. A cytotoxicity test showed that the synthesised ChCl-BuIM was non-toxic, as the human normal cell
lines MCF-10A, and BEAS-2B maintained viability above 50%. These results show that Fe3O4@MIP-ChCl-BuIM
has potential for use as a functional adsorption material for the removal of naproxen from water samples. |
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