Polydopamine-based multilevel molecularly imprinted nanocomposite membranes comprising metal organic frameworks for selective recognition and separation

PDA-induced molecularly imprinted nanocomposite membranes with three-dimensional MOFs-based imprinting structure, in which propranolol was template molecule, was constructed based on our newly-developed synergetic synthesis strategy of the sol-gel imprinting-initiated system. [Display omitted] Molec...

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Bibliographic Details
Published in:Journal of colloid and interface science 2022-01, Vol.606, p.696-708
Main Authors: Yan, Ming, Jiang, Fan, Fei, Hangtao, Ma, Faguang, Yan, Jing, Wu, Yilin
Format: Article
Language:English
Subjects:
Molecularly imprinted membranes
PDA-induced MOFs nanocomposite
Polycarbonate track etch membranes
Propranolol
Selective adsorption and separation
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Summary:PDA-induced molecularly imprinted nanocomposite membranes with three-dimensional MOFs-based imprinting structure, in which propranolol was template molecule, was constructed based on our newly-developed synergetic synthesis strategy of the sol-gel imprinting-initiated system. [Display omitted] Molecularly imprinted nanocomposite membranes with three-dimensional metal–organic frameworks (MOFs)-based structure (MINMs-TM) were successfully prepared by using propranolol as template molecule. Importantly, for the first time, polycarbonate track etch membranes had been used as the supporting surfaces to construct the polydopamine (PDA)-induced MOFs composite structure, in which the as-prepared PDA-modified surface would promote the crystallization and nucleation of ZIF-8-based composite layer. Based on the entire preparation processes of our design, the as-prepared PDA-induced ZIF-8-modified surfaces could be regarded as the imprinted-initiated units of sol–gel imprinting polymerization. Abundant recognition sits of propranolol were achieved in MINMs-TM, which showed characteristic properties of permeability and selectivity. Therefore, high adsorption capacity (41.31 mg/g) and fast adsorption equilibrium rate (within 30 min) had been successfully achieved. Meanwhile, excellent permselectivity rates (β) of MINMs-TM toward propranolol were also obtained as 5.04, 4.79 and 5.14, which MINMs-TM the successful synthesis of high-affinity and high-density propranolol-imprinted sites. Overall, for the practical selective separation and scalability, we had successfully MINMs-TM the preparation of MINMs-TM-based to selective rebinding and separation of propranolol from complex solution system and mimetic water sample, which had further confirmed the desired and potential applications of many environmental pollutants.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2021.08.076