Hydrophilic imprinted MnO2 nanowires “coating” membrane with ultrahigh adsorption capacity for highly selective separation of Artemisinin/Artemether

Meng, Minjia; Li, Yang; Hui, Pei; Li, Binrong; Zhang, Chuanxun; Ren, Jiajia; Ren, Qingluola; Liu, Yan; Pan, Jianming

doi:10.1016/j.cej.2023.143020

Cited by 15 publications

(3 citation statements)

References 35 publications

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“…The mechanism through which the ART is adsorbed by the MINM was investigated using the ATR FT-IR dynamic spectrum. The study revealed the in situ formation of hydrogen bonds between the ART and the MINM, providing insights into the adsorption process (Figure 6) [36].…”

Section: Molecularly Imprinted Nanofiber Membranesmentioning

confidence: 96%

“…This research first studied the effect of the coagulation-bath temperature on the phaseinversion imprinting process. However, the recognition sites of these MIMs tend to have a weak affinity with the template molecule due to the membrane-solubilization phenomenon, resulting in poor selectivity [36]. Therefore, in order to improve this weak selectivity, a phase-inversion method was developed by embedding pre-synthesized MIP particles into the membrane matrix [29].…”

Section: Development Of Molecular Imprinting Membranesmentioning

confidence: 99%

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Advanced Development of Molecularly Imprinted Membranes for Selective Separation

Chen,

Wei,

Meng

2023

Molecules

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Molecularly imprinted membranes (MIMs), the incorporation of a given target molecule into a membrane, are generally used for separating and purifying the effective constituents of various natural products. They have been in use since 1990. The application of MIMs has been studied in many fields, including separation, medicine analysis, solid-phase extraction, and so on, and selective separation is still an active area of research. In MIM separation, two important membrane performances, flux and permselectivities, show a trade-off relationship. The enhancement not only of permselectivity, but also of flux poses a challenging task for membranologists. The present review first describes the recent development of MIMs, as well as various preparation methods, showing the features and applications of MIMs prepared with these different methods. Next, the review focuses on the relationship between flux and permselectivities, providing a detailed analysis of the selective transport mechanisms. According to the majority of the studies in the field, the paramount factors for resolving the trade-off relationship between the permselectivity and the flux in MIMs are the presence of effective high-density recognition sites and a high degree of matching between these sites and the imprinted cavity. Beyond the recognition sites, the membrane structure and pore-size distribution in the final imprinted membrane collectively determine the selective transport mechanism of MIM. Furthermore, it also pointed out that the important parameters of regeneration and antifouling performance have an essential role in MIMs for practical applications. This review subsequently highlights the emerging forms of MIM, including molecularly imprinted nanofiber membranes, new phase-inversion MIMs, and metal–organic-framework-material-based MIMs, as well as the construction of high-density recognition sites for further enhancing the permselectivity/flux. Finally, a discussion of the future of MIMs regarding breakthroughs in solving the flux–permselectivity trade-off is offered. It is believed that there will be greater advancements regarding selective separation using MIMs in the future.

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Section: Molecularly Imprinted Nanofiber Membranesmentioning

confidence: 96%

Section: Development Of Molecular Imprinting Membranesmentioning

confidence: 99%

Advanced Development of Molecularly Imprinted Membranes for Selective Separation

Chen,

Wei,

Meng

2023

Molecules

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“…This gives the polymer an amazing "memory" function and a very selective adsorption ability towards the target molecule. Molecularly imprinted membrane technology [12] is a new crossover technology that combines the advantages of specificity and the high selectivity of MIT with the advantages of easy and continuous operation and mild conditions of membrane separation technology, and it is widely used in the fields of the separation and purification of substances, bionic sensors, and solid phase extraction [13,14]. The common preparation methods of molecularly imprinted membranes (MIMs) are mainly interfacial condensation, surface grafting, electrostatic spinning, and phase conversion techniques, among which phase conversion is the most commonly used method to prepare molecularly imprinted membranes.…”

Section: Introductionmentioning

confidence: 99%

Three-Dimensional Porous PVDF Foam Imprinted Membranes with High Flux and Selectivity toward Artemisinin/Artemether

Bian,

Zhang,

Chen

et al. 2023

Molecules

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In this study, a new 3D porous PVDF-foam-imprinted membrane (PPIM) for the selective separation of artemisinin (ART) was first prepared via the dopamine adhesion of pre-synthesized MIPs into the interior of the PPIM. In the PPIM, the pre-synthesized molecularly imprinted polymers (MIPs) with artesunate (ARU) as a dummy template were uniformly loaded on the interior of the membrane, avoiding the defects of recognition site encapsulation found in the conventional membrane. This membrane also exhibited excellent flux, which is beneficial in practical separation applications. The PPIM was systematically characterized via FT-IR, SEM, pore-size distribution analysis, water contact angle test, membrane flux, and mechanical performance analysis, respectively. In the static adsorption experiment, the pseudo-second-order kinetic model better fitted the rebinding data of ART. Under dynamic conditions, the ART adsorption capacity of the PPIM could be further remarkably improved by tailoring the flow rate to 3 mL min−1. In the selective separation experiment, with artemether (ARE) as the competition substrate, the selective separation ability (α) of the PPIM towards ART/artemether (ARE) reached its peak value (3.16) within only 10 min at this flow rate, which is higher than that of porous PVDF foam non-imprinted membranes (PPNM) (ca. 1.5), showing great separation efficiency in a short time. Moreover, the PPIM can be reused five times without a significant decrease in its adsorption capacities, showing good regeneration performance. This work highlights a simple strategy for constructing new MIMs with high flux and great mechanical strength to achieve the efficient selective separation of ART and ARE in practical applications.

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Engineering strategies toward electrodes stabilization in capacitive deionization

Gao,

Chen

2024

Coordination Chemistry Reviews

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Hydrophilic imprinted MnO2 nanowires “coating” membrane with ultrahigh adsorption capacity for highly selective separation of Artemisinin/Artemether

Cited by 15 publications

References 35 publications

Advanced Development of Molecularly Imprinted Membranes for Selective Separation

Advanced Development of Molecularly Imprinted Membranes for Selective Separation

Three-Dimensional Porous PVDF Foam Imprinted Membranes with High Flux and Selectivity toward Artemisinin/Artemether

Engineering strategies toward electrodes stabilization in capacitive deionization

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