Selective Navigation of Bisphenol‐A from Water to a Polarity Tuned Porous Molecularly Imprinted Polymer

Abstract

A novel water compatible thermally stable molecularly imprinted polymer (MIP) was synthesized with bi‐functional monomers such as methacrylic acid (MAA) and 4‐vinyl pyridine (4VP) in the presence of mixed porogens such as THF and toluene for selectively higher adsorption of potential genotoxic compound Bisphenol‐A (BPA) compared to other structurally comparable phenolic compounds from aqueous solution at pH 7.0. The specific adsorption capacity (56.58 mg/g) and selectivity for BPA compared to non imprinted polymer (NIP) (44.10 mg/g) were achieved at 298 K under optimized conditions. The mesoporous imprints in the macroporous polymeric structure, higher pore volume, higher surface area, synergistic effect of H‐bonding, van der Waals force and π‐π interaction in bi‐functional cavities of MIP improved the recognition selectivity of BPA compared to NIP. The comparison of experimental adsorption isotherm with sixteen adsorption isotherm models conferred that the adsorption of BPA on MIP happened to energetically heterogeneous sites of the imprinted polymer through a spontaneous exothermic process. The kinetics of adsorption of BPA by MIP was best modeled via non‐linear pseudo‐second order kinetics. That novel MIP was found to be reusable for several cycles. This is the first report of the synthesis of thermally stable and mesoporous MAA‐4VP bi‐functional bulk MIPs having excellent selectivity, rapid binding kinetics and appropriate adsorption capacity for adsorption of BPA in water.

Molecularly Imprinted Phase-Change Microcapsule System for Bifunctional Applications in Waste Heat Recovery and Targeted Pollutant Removal

“…This suggests that the MIMs are reproducible and reusable. In addition, Table shows the comparison of the adsorptive performance of the MIMs for BPA with other reported studies. − ,,,− It is noticeable that the comprehensive adsorptive properties of the MIMs are superior or identical to the molecular imprinting systems reported in the literature. These results clearly demonstrate that with satisfactory adsorptive performance, the MIMs synthesized in this work can meet the highly sensitive, highly accurate, and cost-effective requirements for targeted pollutant removal in practical application. , …”

A novel molecularly imprinted electrochemiluminescence sensor based on cobalt nitride nanoarray electrode for the sensitive detection of bisphenol S

“…The absorption peaks in curve c at 1154 cm −1 , 1257 cm −1 , 1458 cm −1 were, respectively, assigned to the symmetric vibration –C–O–, the asymmetric stretching vibration –C–O– and the bending vibration –CH 2 –, respectively, in both MAA and EDMA. 38 The absorption band in the range (2800–3000 cm −1 ) demonstrated the appearance of methyl (–CH 3 ) and methylene groups (–CH 2 ) in both MAA and crosslinking agent EDMA. 39 The carbonyl (–C O) functional groups of MAA could interact with the hydroxy (–OH) functional groups of the template BPS through hydrogen bonds.…”