JOURNAL OF MEMBRANE SCIENCE
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2020
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IF 7.183
Jian Lu,Yingying Qin,Yilin Wu,Minjia Meng,Zeqing Dong,Chao Yu,Yongsheng Yan,Chunxiang Li,Felix Kwame Nyarko
Molecularly imprinted membranes (MIMs) inspired from biological semi-permeable membranes are playing promising roles in molecularly selective recognition and separation due to its remarkable and customizable selectivity. In this research, the bidirectional pyrimethamine molecularly imprinted membranes (PMIMs) have been fabricated for selective separation of pyrimethamine (PMM). PMM was selected as the target resulting from the potential threat to human health and reusable value in aquaculture industry. The carbon nanotubes double-faced loading strategy was implemented based on polydopamine and κ-carrageenan for the improvement of effective platform. By photo-initiated “click chemistry”, specific recognition sites were facilely and efficiently formed on membranes using methacrylic acid as functional monomers . Notably, results indicated that the PMIMs possess desirable rebinding selectivity ( α = 3.24, 3.53 and 3.78) and permselectivity ( β = 3.99, 4.03 and 4.21) towards PMM despite the interference of competitors or analogues (sulfadiazine, diaveridine, and bisphenol A). High regeneration rate (>90% after ten cycles of regeneration) proved the potentials of PMIMs for practical applications. During the designed bidirectional filtration, the PMIMs showed a stable performance in separation of PMM from practical samples. The PMIMs and preparation strategy developed here will provide significant potentials for selective separation and extraction of harmful or reusable constituents form wastewater.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
LUMINESCENCE
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2017
·Vol. 32
·期 7
·1116-1122
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IF 1.509
Xingyi Yuan,Yanji Tan,Xiaoping Wei,Jianping Li
A novel molecular imprinting electrochemiluminescence sensor for detecting chiral cinchonine molecules was developed with a molecularly imprinted polymer membrane on the surfaces of magnetic microspheres. Fe 3 O 4 @Au nanoparticles modified with 6-mercapto-beta-cyclodextrin were used as a carrier, cinchonine as a template molecule, methacrylic acid as a functional monomer and N , N ′-methylenebisacrylamide as a cross-linking agent. Cinchonine was specifically recognized by the 6-mercapto-beta-cyclodextrin functional molecularly imprinted polymer and detected based on enhancement of the electrochemiluminescence intensity caused by the reaction of tertiary amino structures of cinchonine molecules with Ru(bpy) 3 2+ . Cinchonine concentrations of 1 × 10 −10 to 4 × 10 −7 mol/L showed a good linear relationship with changes of the electrochemiluminescence intensity, and the detection limit of the sensor was 3.13 × 10 −11 mol/L. The sensor has high sensitivity and selectivity, and is easy to renew. It was designed for detecting serum samples, with recovery rates of 98.2% to 107.6%.
研究领域:
分析化学
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生物传感
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材料科学
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产品关联
DOI
PubMed
高影响因子
APPLIED SURFACE SCIENCE
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2018
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IF 4.439
Hui Zhang,Yuqi Li,Deyong Zheng,Shilin Cao,Lihui Chen,Liulian Huang,Huining Xiao
Separating the natural product of paclitaxel from its structural analogs still remains a significant challenge. In this work, a novel molecular imprinting membrane (Cell/SiO 2 -MIM) with specific recognition sites was hierarchically constructed for paclitaxel (PTX) separation. Inspired by mussel, inorganic silica nanoparticles (SiO 2 NPs) were introduced onto the surface of the regenerated cellulose membrane as polymerization platform in an attempt to enhance the permeation flux of the membrane. The specific recognition sites of PTX were constructed on the nanoscale silica surface through the bulk polymerization of vinylpyridine in the presence of PTX as templates, leading to the membrane with the selective recognition ability for the target molecule (PTX). The as-synthesized imprinting membrane exhibited excellent selective adsorption capacity and perm-selectivity towards PTX, with the maximum adsorption amount and separation factor of 46.36 mg/g and 3.77, respectively. Moreover, after six consecutive adsorption and desorption cycles, the membrane maintained the excellent stability and reusability, which facilities its potential application in an industrial scale.
研究领域:
材料科学
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药物分离工程
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生物医学工程
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DOI
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
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2022
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IF 4.831
Hongji Li,Junfu Wang,Xiyue Wang,Haochen Yu,Linjing Ji,Tianyu Zhou,Chunbo Liu,Guangbo Che,Dandan Wang
In this test, the eggshell membrane (ESM) is selected as the support membrane for the biocompatibility and anchors CNTs on the surface to increase the mechanical properties. Then Ag NPs are decorated on CNTs-ESM substrate as SERS substrate by twice in-situ reduction. Finally, a layer of imprinted polymers is coated on the surface of the substrate to synthesize the imprinted membrane for selective detection of spiramycin. It is exhibited from the characteristic results that the CNTs significantly increase the mechanical properties and the detection sensitivity, simultaneously. When the concentration of SP changes between 10 -6 ∼ 10 -11 M, there is a linear relationship between SERS intensity and SP concentration. The detection limit is 10 -11 M, and the correlation coefficient R 2 is 0.9864. The SERS imprinted membrane can be applied into the detection of antibiotics in practical sample, which broadens the research field of antibiotics detection.
研究领域:
分析化学
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生物医学工程
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材料科学
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2022
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IF 10.53
Tingting Tang,Fan Yang,Meiying Xie,Liyan Xue,Zhengming Jiang,Zexing Xie,Kaixian Wang,ZhiWan Li,Laiyao Geng,Tianxi Hu
Hafnium (Hf) is an important strategic material for the semiconductor, aerospace and nuclear industries. In this paper, an advanced ion-imprinted membranes (IIMs) separation system was prepared for the first time to achieve efficient separation and enrichment of Hf ions from zirconium oxychloride solutions. IIMs were constructed by a keyhole complex imprinting method with N , N -di-2-ethylhexyl diglycolamic acid (D2EHDGAA) as the carrier molecule, cellulose triacetate (CTA) as the base polymer and Hf ions as the template ion. In addition, amide acid driven IIMs were coupled with aspartic acid in the feed phase, which changes from preferential extraction of Zr to preferential extraction of Hf. To characterize it, we used Fourier transform infrared (FT-IR) spectroscopy and scanning election microscopy (SEM). The results showed that IIMs can increase C Hf /C Zr from 2.33:100 to 33.33:100 within 1 h compared with polymer inclusion membranes (PIMs) and ionic liquid supported liquid membranes (SLMs), which increased by 3.33 and 3.67 times. The selectivity and enrichment performance for the enrichment of Hf ions from Zr solution were significantly improved due to the high recognition selectivity of ion imprinting. Therefore, IIMs, as an advanced membrane separation system, may have good potential for industrial application in the field of efficient separation and enrichment of Hf ions.
研究领域:
材料科学
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化学工程
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核工业技术
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DOI
高影响因子
MOLECULES
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2022
·Vol. 28
·期 1
·310
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IF 4.927
Yi Zhang,Shaofeng Li,Yurong Gu,Jianying Zhang,Zhenfeng Yue,Liao Ouyang,Fengjuan Zhao
A novel malachite green molecularly imprinted membrane (MG-MIM) with specific selectivity for malachite green (MG) and leucomalachite green (LMG) was prepared using a hydrophobic glass fiber membrane as the polymer substrate, methyl violet as a template analog, 4-vinyl benzoic acid as the functional monomer, and ethyleneglycol dimethacrylate as the crosslinking agent. MG-MIM and non-imprinted membrane (NIM) were structurally characterized using scanning electron microscopy, surface area analyzer, Fourier-transform infrared spectrometer and synchronous thermal analyzer. The results showed that MG-MIM possessed a fluffier surface, porous and looser structure, and had good thermal stability. Adsorption properties of MG-MIM were investigated under optimal conditions, and adsorption equilibrium was reached in 20 min. The saturated adsorption capacities for MG and LMG were 24.25 ng·cm−2and 13.40 ng·cm−2, and the maximum imprinting factors were 2.41 and 3.20, respectively. Issues such as “template leakage” and “embedding” were resolved. The specific recognition ability for the targets was good and the adsorption capacity was stable even after five cycles. The proposed method was successfully applied for the detection of MG and LMG in real samples, and it showed good linear correlation in the range of 0 to 10.0 μg·L−1(R2= 0.9991 and 0.9982), and high detection sensitivity (detection limits of MG and LMG of 0.005 μg/kg and 0.02 μg·kg−1in shrimp, and 0.005 μg/kg and 0.02 μg/kg in fish sample). The recoveries and relative standard deviations were in the range of 76.31–93.26% and 0.73–3.72%, respectively. The proposed method provides a simple, efficient and promising alternative for monitoring MG and LMG in aquatic products.Keywords:malachite green molecularly imprinted membranes;template analogs malachite green;colloidal gold strip;residuals analysis
研究领域:
环境科学
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食品安全
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分析化学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Jingjing Zhen,Faguang Ma,Jing Yan,Rongxin Lin,Ming Yan,Yilin Wu
Complex substrates found in certain extracts-particularly those containing high phenolic compounds with significant medicinal value-pose considerable challenges to developing molecularly imprinted membranes (MIMs) with specific recognition abilities. In this study, UiO-66-NH 2 , a metal–organic structure (MOF), was chosen as an optimizer to enhance the basic support material C 3 N 4 . A composite imprinted membrane based on MOFs was then prepared for the targeted adsorption of luteolin (LTL). This not only increases the surface area and pore capacity of the composite membranes, but also ensures unprecedented control over the membranes structure and good stability. To maximize the proportion of imprinted sites, we utilize an advanced boron affinity sol–gel imprinting technique that capitalizes on the exceptional response of the bifunctional monomer. By finely manipulating the imprinting process, controlled distribution of imprinted sites was achieved. Furthermore, the incorporation of Ag nanoparticles into the composite matrix of MIMs enhances selectivity and efficiency due to their plasmonic properties and high affinity for phenolic compounds, providing increased adsorption surface area and additional binding sites. The results showed satisfactory rebinding ability (56.25 mg g −1 ) and superselective ( β AG/LTL = 4.43 and β CT/LTL = 8.49). It was worth noting that incorporating Ag nanoparticles into composite MIMs for the selective adsorption of LTL demonstrates significant potential. This includes enhanced selectivity, efficiency, and hydrophilicity of the membrane surface. Thus, enhanced hydrophilicity can establish stronger non-covalent interactions, namely hydrogen bonding and van der waals forces, with the target molecules, thereby significantly improving the adsorption capacity of the MIMs. The feasibility of this method was demonstrated via in-situ infrared analysis of the chemical structure changes before and after adsorption.
研究领域:
材料科学
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生物医药工程
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分析化学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2022
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IF 16.744
Wendong Xing,Yulong Yan,Chong Wang,Jia Gao,Chao Yu,Yongsheng Yan,Chunxiang Li,Zhongfei Ma,Yilin Wu
Molecularly imprinted membranes (MIMs) are promising in water treatment because of its predetermined selectivity, but the limitations of trade-off relationship between permeability and selectivity, as well as membrane failure hinder their wider applications. Herein, we report construction of MOFs self-assembled molecularly imprinted membranes (SA-MIMs) with photoinduced regeneration ability by visible light driven loading strategy for long-lasting selective separation of ciprofloxacin (CF). The visible light driven loading design leverages on the UiO-66-NH 2 as visible light absorption medium to generate reactive oxygen species (ROS) to promote dopamine polymerization, which in turn facilitates the loading of the MOFs on the substrate membranes under mild conditions. The CF imprinted polymers layer was synthesized in water via reverse atom transfer radical polymerization (RATRP) that imparted the specific recognition ability and excellent water compatibility for the SA-MIMs. As a result, the prepared SA-MIMs display enhanced rebinding selectivity and permselectivity (α CF/PM = 4.02 and α CF/LF = 3.23) and permselectivity ( β CF/PM = 3.44 and β CF/LF = 3.51) for target molecules. More importantly, based on the good photocatalytic activity of UiO-66-NH 2 , the target molecules adsorbed on the specific binding sites can be degraded and removed, thereby achieving photoinduced rapidly regeneration. The impressive long lasting selective separation performance of SA-MIMs in the regeneration assisted continuous separation process indicate that the potential in practical application.
研究领域:
环境科学
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材料科学
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化学工程
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Shucheng Liu,Yan Chen,Zhi Hu,Bin Bai,Xuan Zhang,Jinyu Li,Nana Tang,Bo Wang
Naringin (NRG), known as an important natural flavoniod compounds, exhibits excellent phamaceutical value and clinical application prospect. However, the main obstacle to the isolation and purification of NRG is the low concentration and complexity of the extraction system. Herein, a new kind of hierarchical porous metal–organic frameworks (MOFs) based molecularly imprinted membranes (PBMMA-MIMs) for the specific separation of NRG. The prepared PBMMA-MIMs showed the fast adsorption kinetics (within 120 min). Moreover, the abundant boronic acid imprinted recognition sits and hydrophilic hierarchical porous MOFs improved the adsorption capacity (the maximum adsorption amounts 57.39 μmol/g) and exhibited selective NRG adsorption (imprinting factor 2.31) with efficiency over 91.69 % after seven adsorption–desorption cycles. In addition, the coarse NRG could be effectively extracted to a promising purity of 93.13 % via PBMMA-MIMs. This study provides new insights into the design molecularly imprinted membranes via environmentally friendly synthesis route for the preparation for enriching high-value flavoniods, achieving efficient purification rate of agricultural wastes for pollution control, and promoting the sustainable reuse in complex agricultural wastewater.
研究领域:
材料科学
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环境科学
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药学
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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2024
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IF 8.1
Zheng Li,Xin Song,Wenke Li,Xiaolong Ding,Lianjie Li,Meijun Liu,Lanhe Zhang,Chuntao Zhu,Zicheng Chen
A novel lithium (Li) ion-imprinted composite membrane (IIP@PPy/rGO@PVDF) was developed for the selective recovery of Li + through an external-voltage-driven process. This membrane was synthesized by integrating ion-imprinting technology with electrochemically switched ion exchange technology, presenting a highly promising technique for the efficient extraction of Li from brine. The IIP@PPy/rGO@PVDF membrane consisted of polypyrrole (PPy), reduced graphene oxide (rGO), 12-crown 4-ether (12C4), and ethylene dimethacrylate (EDGMA). Furthermore, leveraging the electric field and specific recognition of 12C4 toward Li + , the membrane exhibited excellent ionic adsorption performance, including a high adsorption capacity of 214 mg.g −1 , a superior retention ratio (Maintaining the initial value even after 10 cycles of electrochemical adsorption–desorption), a short equilibration time of <25 min, and an adsorption capacity of 98 mg.g −1 at pH = 1. Subsequently, variations in the average heat of adsorption indicated that the electric field enhanced the adsorption performance. These performances were attributable to the synergistic effects of rGO with PPy. Therefore, IIP@PPy/rGO@PVDF serves as an outstanding candidate for Li extraction in environments with high applied voltages and strong acidity.
研究领域:
材料科学
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环境工程
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产品关联
DOI
高影响因子
Journal of the Taiwan Institute of Chemical Engineers
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2018
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IF 3.849
Keyu Cui,Baihui Gao,Meng Tai,Bin Su
Rapid development of rare earth industry has led to an increasing demand for highly purified rare earth elements (REEs). The combination of ion-imprinted technique (IIT) and membrane separation technique (MST) is recently regarded as a promising strategy for selectively separating specific ions from multiple REEs. In this work, a facile bionic strategy for preparation of Gd (III)-imprinted membranes (GIMs) were developed via interlaced stacking of one-dimensional Gd (III)-imprinted carbon nanotubes (GICNTs) and two-dimensional polydopamine-modified graphene oxide (pDA@GO). Polydopamine was synthesized on graphene oxide to large enhance the interfacial adhesion, and ion-imprinting polymerization is implemented on carbon nanotubes (CNTs) by direct cross-link of linear polymers. The obtained materials are characterized in detail by FTIR, SEM, TEM and AFM to explorer the evolution of chemical composition and morphology. Selectivity towards Gd (III) is obtained by isothermal adsorption, kinetic adsorption and time-depended permeation. Isothermal and kinetic models are fitted with adsorption data to obtain the mechanism of selective separation on GIMs. The as-synthesized GIMs with high permeation selectivity (2.91 and 2.49) towards Gd (III) and stable permeation regeneration would potentially be applied to separation and purification of specific ions form multiple REEs.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
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2022
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IF 4.119
Jiaqi Yang,Guorui Qu,Cuiping Liu,Shiwei Zhou,Bo Li,Yonggang Wei
The high lithium content in spent lithium ion batteries (LIBs) and a large number of spent LIBs generation shift the target of lithium recovery to solid waste. Adsorption separation is of great application value for lithium recovery. There is still a lack of a lithium adsorption material with excellent properties. Herein, an environmental hydrolytic polymerization to prepare lithium ion-imprinted membranes (LIIMs) with high adsorption capacity and selectivity is presented. The LIIMs can reach adsorption equilibrium in 40 min, showing fast adsorption kinetics . The optimal adsorption capacity of the LIIMs for Li + was 132.00 mg g −1 after immersing in a 300 mg L −1 LiCl solution based on ample binding sites and a strong affinity force. Langmuir isothermal adsorption results proved that the imprinting sites on LIIMs were homogeneous. The selective separation factors (α) of Li + to Mg 2+ , K + , Ca 2+ , Na + were 6.80, 17.00, 21.30, and 24.60, respectively, which implies the superior selectivity LIIMs toward Li + . The adsorption capacity of LIIMs remained about 97 % after six cycles. Due to the suitable cavity, abundant rebinding sites, and strong affinity, the LIIMs have a good selective adsorption ability to Li + . Therefore, the LIIMs would have potential applications for separating Li + from spent LIBs.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）