Journal
POLYMERS
Volume 14, Issue 22, Pages -Publisher
MDPI
DOI: 10.3390/polym14224818
Keywords
Fe(II) clathrochelate; copolymers; poly(vinylene sulfone); selective oxidation; iodine adsorption; environmental remediation
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Funding
- Kuwait Foundation for the Advancement of Sciences (KFAS) [PN18-14SC-03]
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Three organometallic copolymers with iron(II) clathrochelate units and excellent iodine adsorption properties were synthesized and characterized. Regeneration tests confirmed their high efficiency for iodine adsorption even after multiple cycles of adsorption-desorption.
Three organometallic copolymers, ICP1-3, containing iron(II) clathrochelate units with cyclohexyl lateral groups and interconnected by various thioether derivatives were synthesized. The reaction of the latter into their corresponding OICP1-3 sulfone derivatives was achieved quantitatively using mild oxidation reaction conditions. The target copolymers, ICP1-3 and OICP1-3, were characterized by various instrumental analysis techniques, and their iodine uptake studies disclosed excellent iodine properties, reaching a maximum of 360 wt.% (q(e) = 3600 mg g(-1)). The adsorption mechanisms of the copolymers were explored using pseudo-first-order and pseudo-second-order kinetic models. Furthermore, regeneration tests confirmed the efficiency of the target copolymers for their iodine adsorption even after several adsorption-desorption cycles.
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