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Preparation of functionalized ion‐imprinted phenolic polymer for efficient removal of copper ions
Author(s) -
Monier Mohammed,
Youssef Ibrahim,
ElMekabaty Ahmed
Publication year - 2020
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.5915
Subject(s) - schiff base , adsorption , copper , aqueous solution , selectivity , resorcinol , ion , ligand (biochemistry) , inorganic chemistry , chemistry , ionic bonding , extraction (chemistry) , materials science , catalysis , polymer chemistry , nuclear chemistry , organic chemistry , biochemistry , receptor
In this work, an ion‐imprinted polymeric material based on functionalized phenolic resin was developed for the efficient selective removal of Cu 2+ ions from aqueous solution. p‐ Aminophenol‐isatin Schiff base ligand (HPIS) was first synthesized and combined with Cu 2+ ions to prepare the corresponding complex [Cu(PIS) 2 ]. The Schiff base ligand along with its copper complex was fully investigated and characterized before anchoring in a base‐catalyzed condensation copolymerization with formaldehyde and resorcinol. The Cu 2+ ions were removed from the obtained resin construction and the resulting Cu 2+ ion‐imprinted material (Cu‐PIS) was employed for the selective extraction of Cu 2+ ions under different pH values, initial concentrations and contact time conditions. The optimum pH for the removal process was chosen as 6 and the maximum adsorption capacity was 187 ± 1 mg g –1 . Also, the kinetics showed a better fit with the pseudo‐second‐order equations. The selectivity of the prepared Cu‐PIS was also evaluated in a multi‐ionic species containing Ni 2+ , Cd 2+ , Pb 2+ , Co 2+ besides Cu 2+ ions and the determined parameters confirmed a superior recognition capability toward the imprinted Cu 2+ ions. © 2019 Society of Chemical Industry