Recent advances on ion-imprinted polymers

Hg2+ion-imprinted polymers sorbents based on dithizone–Hg2+chelation for mercury speciation analysis in environmental and biological samples

“…20,21,[24][25][26][27] This recognition ability can be explained by the memory effects of polymers toward metal ion interaction with a specic ligand, coordination geometry, metal ion coordination number, charge and size. 28 Metal IIPs have attracted increasing attention due to their unique features: rst, the coordination reaction is stronger than the hydrogen bond strength, especially in aqueous solution; second, it is quick to achieve the balance of the thermodynamics and kinetics. 29,30 Lately, a number of studies on IIPs and their applications for selective preconcentration and separation of metal ions have been reported.…”

“…29,30 Lately, a number of studies on IIPs and their applications for selective preconcentration and separation of metal ions have been reported. 20,21,28,30,31 However, IIPs related studies are oen limited by the challenges of incomplete ion removal and low selectivity because many metal ions have the same charges, similar ionic radius and properties. 28,32,33 To overcome these limitations effectively, a graing method on the surface of polymer/silica gel beads and utilizing selective ligands and/or functional monomers for ion imprinting have been developed.…”

Current status and challenges of ion imprinting

“…The role of the ligand is specic and fundamental since ion chelation is involved in the recognition process. 24 The coordination interaction between an ion and the polymer is due to electron donation from heteroatoms based on its unlled orbitals in the outer sphere. Relatively speaking, commonly used monomers oen possess universality to form immobilized covalent or non-covalent bonds for many ions, which may limit their selectivity.…”

“…2,[22][23][24][25][26] Our group 2 gave a panoramic review on MIT and Whitcombe et al 22 presented a survey that reviewed 3779 references over the years [2004][2005][2006][2007][2008][2009][2010][2011]; but neither of them focused on ion imprinting. Rao et al 23 paid more attention to some applications of IIPs for solid-phase extraction (SPE), sensors, and membrane separations.…”

Multi-templated Pb-Zn-Hg Ion Imprinted Polymer for the Selective and Simultaneous Removal of Toxic Metallic Ions from Wastewater

“…or their combinations have been employed to eliminate the challenges of previous traditional methods (C.-Y. Chen, Chang, & Wang, 2009) (Branger, Meouche, & Margaillan, 2013). These methods exhibit numerous advantages such as high removal factors, high retention capacity, flexibility, robustness, speed and simplicity.…”