Synthesis of Graphite‐Based Ion‐Imprinted Polymer for the Selective Removal of Nitrate Ions

A graphite‐based ion‐imprinted polymer (G‐IIP) was synthesized using the surface‐printing technique. Allylthiourea was used as the functional monomer, nitrate as the template, and ethylene glycol dimethacrylate as a crosslinker. The polymers were characterized, and the adsorption capacity was tested...

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Bibliographic Details
Published in:Chemical engineering & technology 2022-10, Vol.45 (10), p.1803-1810
Main Authors: Ismail, Anis Syahirah, Ishak, Noorhidayah, Kamarudin, Qasrina, Ewe, Vivian Shin Hui, Mustapa, Nur Bahijah, Mohamed Nasir, Azalina
Format: Article
Language:English
Subjects:
Adsorption
Allylthiourea
Chemical synthesis
Ethylene glycol
Glycol dimethacrylates
Graphite
Imprinted polymers
Ion‐imprinted polymer
Nitrate ions removal
Nitrate removal
Selective adsorption
Surface‐imprinting technique
Wastewater treatment
Water sampling
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Summary:A graphite‐based ion‐imprinted polymer (G‐IIP) was synthesized using the surface‐printing technique. Allylthiourea was used as the functional monomer, nitrate as the template, and ethylene glycol dimethacrylate as a crosslinker. The polymers were characterized, and the adsorption capacity was tested. The binding ability of G‐IIP was nearly twice higher than that of the graphite‐non‐imprinted polymer (G‐NIP). The adsorption of G‐IIP followed the Freundlich isotherm and the pseudo‐second‐order kinetic. G‐IIP showed good removal efficiency of nitrate ions in actual wastewater samples with 85 % recovery. Overall, the fabricated G‐IIP would be a potential adsorbent for wastewater treatment. A sandwich‐like surfaced graphite‐based ion‐imprinted polymer (G‐IIP) was successfully fabricated for removing nitrate ions selectively using solid‐phase extraction. The adsorbents were developed for selective adsorption with good selectivity and sensitivity due to the tailored specific recognition sites on the G‐IIP surface that were complementary to the geometry of the target ions.
ISSN:0930-7516
1521-4125
DOI:10.1002/ceat.202200001