CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Jiuyun Cui,Zhiping Zhou,Atian Xie,Siwei Liu,Qianqian Wang,Yilin Wu,Yongsheng Yan,Chunxiang Li
Lithium resources are attractive for different applications because of their specific properties. Therefore, it is more significant to find a cost-effective and environment-friendly method to selective adsorption and recovery of Li + . In this work, a renewable and easy degradable CA/CS hybrid membrane was modified with polydopamine as adhesion layer to anchored TiO 2 . The simple imprinting process could be realized by hydrolysis polymerization. The adsorption process followed Langmuir isotherm model and pseudo-second-order kinetic equation were researched in detail. The results displayed the maximum adsorption capacity is 20.08 mg g −1 for Li + . The selectivity factors of Li + to Na + , K + , Mg 2+ and Ca 2+ are 1.78, 2.43, 2.60 and 3.61, respectively, which mainly attributed to imprinting effect. The LIICMs also exhibited the superior reusability and durability. Thus, the LIICMs provide a powerful tool for selective separation and recovery of Li + from mixed solutions.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
·
IF 7.489
Yilin Wu,Wendong Xing,Junzhi Yan,Jiuyun Cui,Faguang Ma,Jia Gao,Jian Lu,Chao Yu,Ming Yan
In spite of the intense efforts in selective separation field, the utilization and preparation of membrane-associated molecularly imprinted membranes with both enhanced rebinding capacities and high permselectivity performance still remain strong challenges. Herein, the bioinspired PDA-modified porous regenerated cellulose membrane (pRCMs) with mineral-coated multilevel structure was first proposed for the preparation of PDA/CaCO 3 -based imprinted nanocomposite membranes (PCIMs), m-cresol was chosen as the template molecule. Importantly, this bioinspired methodology was redeveloped and optimized to obtain abundant and uniformly distributed CaCO 3 nanocomposite on the surfaces of PDA@pRCMs. The as-designed sandwich-like imprinting structure were then constructed on PDA/CaCO 3 -based surfaces by developing a simple sol-gel imprinting process. Attributing to the design of the uniform CaCO 3 /PDA@pRCMs surfaces, amount of m-cresol-imprinted sites and permeation selectivity could be both optimized, it was no surprise that more excellent rebinding capacity (97.4 mg g −1 ), fast adsorption kinetics and high permselectivity coefficients (more than 13) were successfully achieved. Importantly, the whole synthesis process was conducted without complicated procedures and polluting the environment. Finally, the experimental results mentioned above, together with the green synthesis processes strongly demonstrated that our synthesis methodology of PCIMs had great potential for applications in various fields of selective separation, chemical industry, environment, biological medicine and so on.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
DOI
高影响因子
Materials Today Nano
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2023
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IF 10.3
Jing Yan,Faguang Ma,Yilin Wu
Molecularly imprinted membranes have superior selective separation capacity, rebinding capacity, and flux due to their microporous substrates and tightly packed molecularly imprinted polymers . In current study, artemisinin (Ars), the most effective antimalarial drug , is used as template molecule. The permeation-selectivity wooden membranes based on Ars-imprinted nanocages designed by metal organic framework@carbon nitride self-assembly process (MDWMs) has been successfully prepared: (i) based on three-dimensional mesoporous basswood membranes, dopamine-based auto-polymerization process was developed on basswood to for harvest the first layer imprinting and secondary reaction platform. (ii) The two-dimensional sheet carbon nitride modified by metal-organic framework is stably loaded on the surface of the polydopamine-modified basswood membrane, providing a rich irregular point array structure for the formation of recognition sites. Based on elaborate designs and optimizations, selectivity , rebinding capabilities, and flux are enhanced on the developed MDWMs ( β Are/Ars = 6.49, β Aru/Ars = 4.22, β DH-Ars/Ars = 7.42), and high regeneration rate (>94% after 10 cycles) indicates that MDWMs have superior selectivity and stability. The MDWMs and preparation strategies developed here will provide a completely new design methodology for subsequent selective separation of Ars.
研究领域:
材料科学
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药物化学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2015
·Vol. 132
·期 31
·
IF 1.768
Fengquan Sun,Minjia Meng,Li Yan,Zhihui He,Yongsheng Yan,Yan Liu,Shijuan Liu
Highly selective, ordered microporous molecularly imprinted membranes (MIMs) for phenol were synthesized by breath figure (BF) method using styrene-acrylonitrile copolymer (SAN) as the membrane matrix and molecularly imprinted polymer nanoparticles (nano-MIPs) as the imprinted nanoparticles. The nano-MIPs were synthesized by oil-in-water emulsion polymerization using 4-vinyl pyridine (4-VP), methyl methacrylate (MMA) or cinnamic acid (CA) as the functional monomer, respectively. The prepared nano-MIPs were characterized by transmission electron microscope (TEM) and Raman, whereas MIMs were characterized by SEM, membrane flux, and selective adsorption experiments. Morphological analysis exhibited that the addition of nano-MIPs improved the formation of ordered and well-defined porous membrane morphology. Compared with MMA-MIM and CA-MIM, the 4-VP-MIM exhibited higher membrane flux, adsorption capacity, and stronger selective binding for phenol as well as excellent permeation selectivity for phenol. Moreover, the selective effect of 4-VP-MIM on phenol was strongly affected by the amount of 4-VP imprinted nanoparticles (nano-4-VP-MIPs). The experimental data revealed that the 4-VP-MIM containing 2.0 wt % of nano-4-VP-MIPs exhibited the highest separation selectivity for the template phenol, whose selectivity coefficients for phenol relative to salicylic acid (SA) and p -hydroxybenzoic acid ( p -HB) were 5.6770 and 5.5433, respectively, which was close to the predicted selectivity coefficient value. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42350.
研究领域:
材料科学
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环境科学
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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
Hang Cui,Jing Yan,Faguang Ma,Zequan Diao,Ming Yan,Yilin Wu,Jianming Pan
Here, ribavirin (RBV) was introduced into metal organic frameworks (MOFs) in this instance to direct the in situ fabrication of appropriate nanocage structures to facilitate the targeted binding of RBV. Well-designed nano-caged RBV imprinted membranes (NCRIMs) have remarkable antifouling capabilities and can selectively separate RBV from wastewater generated by the RBV production process by constructing imprinting sites inside the molecule. Polydopamine (PDA) is rich in hydrophilic groups (hydroxyl and amino groups) that interact with water molecules via hydrogen bonding, thereby generating a hydrate layer on the membrane surface. The synthesized RBV imprinted sites were homogeneously scattered at the interface and inside of the membrane, resulting in a satisfactory selectivity. Notably, methacrylic acid and acrylamide act as functional monomers that synergistically promote the ability to selectively recognise RBV imprinting sites. It was demonstrated that NCRIMs had favourable rebinding selectivity ( α RBV/ACV = 3.28, α RBV/AZT = 2.48, α RBV/LAM = 3.72) as well as partial selectivity ( β RBV /LAM = 9.48, β RBV/AZT = 8.20, β RBV/ACV = 2.95), indicating the potential of NCRIMs in practical application. What is significant is that the cooperative imprinting and modification methods devised in this study offer directions for the selective isolation of valuable components from complex environments, as well as a reference towards the design of potentially highly resistant membranes.
研究领域:
材料科学
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环境工程
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药物化学
✓ 已验证
产品关联
DOI
高影响因子
REACTIVE & FUNCTIONAL POLYMERS
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2019
·
IF 3.074
Jie-Ping Fan,Yu-Tong Cheng,Xue-Hong Zhang,Zhou-Peng Xiao,Dan-Dan Liao,Hui-Ping Chen,Kuan Huang,Hai-Long Peng
In this work, a novel mixed non-covalent and semi-covalent molecularly imprinted membrane (MIM) with hierarchical pores was prepared by cryopolymerization at −18 °C and using PEG2000 and dimethyl sulfoxide ice crystals as the pore templates. The free-standing MIM was characterized by scanning electron microscope and nitrogen adsorption-desorption isotherms, and the results confirmed the formation of the hierarchical pore structure . In the static adsorption, membrane permeation and dead-end filtration experiments, the results indicated that the mixed non-covalent and semi-covalent molecular imprinting was a good method to improve the performance of MIM which had a good adsorption selectivity toward genistein due to the presence of the imprinted sites in MIM and possessed strong imprinting efficiency toward genistein even in some similar compound mixture or extract of Radix Puerariae Lobatae.
研究领域:
药学
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分离科学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2018
·Vol. 20
·期 23
·15775-15783
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IF 3.906
Yilin Wu,Jian Lu,Xinyu Lin,Jia Gao,Li Chen,Peng Lv,Xinlin Liu,Minjia Meng,Chunxiang Li,Yongsheng Yan
Inspired by the biomimetic membrane modification technique of polydopamine (pDA), SiO2/pDA-based nanocomposite-imprinted membranes (SpIMs) with high selectivity and stability have been successfully synthesized. Herein, tetracycline (TC) was used as a template molecule and instead of constructing imprinted polymers onto pristine membrane surfaces, a versatile pDA-modified strategy was initially conducted on the membrane surfaces followed by the reformative sol–gel imprinting technique. Moreover, largely enhanced TC-rebinding capacity (45.95 mg g−1), permselectivity of TC (separation factors more than 11.5) and structural stability (maintained 93% of the maximum adsorption capacity after 11 cycling operations) could be easily achieved because of the construction of membrane-based multilevel nanocomposite surfaces. These results strongly illustrated that the incorporation of pDA-based sol–gel imprinted polymers into molecularly imprinted membranes could result in both high rebinding capacity and excellent permselectivity. All synthesis processes were carried out at low temperatures and ordinary pressures, which is energy-efficient and environmentally friendly for large-scale applications.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
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2019
·
IF 2.983
Haining Yu,Ru Yao,Shengrong Shen
A molecularly imprinted membrane (MIM) with vancomycin (VCM) as a template and other related different material membranes (organic nylon microporous membranes, polyvinylidene fluoride (PVDF) membranes, polypropylene membranes) as a support respectively were synthesized by surface imprinting for the selective absorption of VCM, which can be used for pretreatment biological samples and rapid determination of VCM. The optimal ratio of template and functional monomer was 1:4, which was simulate by Gaussian, and the results showed that PVDF MIM had the best selectivity of the other three synthesized membranes to be used in the experiment. The maximum load on PVDF MIM was 23.8μg/cm 2 , and on non-molecularly imprinted membrane was 1.7μg/cm 2 . Additionally, performance of PVDF MIM, including surface structure, adsorption capacity, selective adsorption capacity, were also examined in this work. VCM in sample was enriched and separated effectively by PVDF MIM, and was quantitatively analyzed significantly by UV. The optimum eluent was 0.1 mol/L KOH aqueous solution in methanol (v/v=1/4), which desorption time was around 20 min. Also, recovery rate, precision, stability, linearity and repeatability for the novel assay were investigated respectively. The results indicated that separation and enrichment of VCM in biological samples by VCM MIM was reliable. The development of the assay, across a range of analytical and separated techniques for which MIM appeared to be the best support, was giving rise to increased interest in the determination of antibiotics as speedy assay for the blood concentration in clinical.
研究领域:
分析化学
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药物分析
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生物医学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2014
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IF 4.908
Jie-Ping Fan,Lie Li,Ze-You Tian,Chun-Fang Xie,Fa-tian Song,Xue-Hong Zhang,Jian-Hang Zhu
Flexibility was very important for molecularly imprinted membrane (MIM) to apply to practical use. A novel free-standing flexible MIM was prepared using methacrylic acid (MAA) and 2-hydroxyethyl acrylate (HEA) as co-functional monomer , and ionic liquid as porogen. HEA was able to effectively improve the flexibility of MIM. Ionic liquid, 1-butyl-3-methylimidazolium bromide, was able to accelerate the synthesis process and improve the selectivity and adsorption of the MIM. The properties of MIM were characterized by scanning electron microscopy (SEM), Fourier transform infrared (FT-IR), thermo gravimetric analysis (TGA), differential thermal analysis (DTA) and X-ray photoelectron spectroscopy (XPS). Two structurally similar compounds (octopamine and tyramine) were selected as competitors to examine the selective recognition of MIM to synephrine (SYN). The competitive adsorption and permeation selectivity experiments showed that the MIM could selectively recognize SYN, and was able to be used to selectively separate SYN from the standard mixtures or the extract of stir-baked Aurantii Fructus Immaturus in methanol/water (4:1, v / v ) media.
研究领域:
化学工程
·
生物技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Chao Yu,Jianping Song,Zhongfei Ma,Jian Lu,Wendong Xing,Minjia Meng,Jiangdong Dai,Yongsheng Yan,Yilin Wu
Janus imprinted membrane (JIM) fabricated through the connective method of phase inversion and dip-coating processes has gained considerable attention in the separation field. Herein, a JIM with specific artificial receptors was prepared for the selective adsorption and separation of tetrabromobisphenol A (TBBPA) and cadmium ion (Cd 2+ ). Dip coating method performed on the smooth surface of plate glass was used for the growth of polyaniline (PANI) imprinted polymers with specific imprinted cavities for TBBPA. The casting solution was coated on the imprinted polymers, which was then immersed into the coagulating bath containing gallic acid (GA) to achieve a delayed phase inversion process. The adsorption results showed that the rebinding capacities of the JIM for TBBPA and Cd 2+ were 58.279 mg g −1 and 83.159 mg g −1 , respectively. Meanwhile, the JIM exhibited superior rebinding selectivity with selectivity coefficients of 2.56, 2.87, 3.07, 2.52, 3.53, 3.66 and 4.05 for Pb 2+ , Cu 2+ , Zn 2+ , Sn 2+ , Hg 2+ , Co 2+ and Cr 3+ and 2.44, 2.56, 2.67 for BP, BPA and BBPA, respectively. The synthesized JIM showed tiny changes in rebinding capacity after 10 times cycles, revealing desirable regeneration performance. Finally, the pollutants on membrane surface were severally collected to avert the secondary pollution. The current study demonstrated that connective method is a promising method for selective rebinding and sorting treatment of different pollutants.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2020
·
IF 10.652
Jian Lu,Ying-Ying Qin,Yi-Lin Wu,Mu-Ning Chen,Chang Sun,Zi-Xuan Han,Yong-Sheng Yan,Chun-Xiang Li,Yan Yan
Molecularly imprinted membranes (MIMs) developed from membrane separation technology and molecularly imprinting technology have shown great advantages in water treatment, drug extraction and biochemical separation. Inspired by superiority of core–shell structure onto nanomaterials, the mimetic-core–shell design on MIMs would possess both properties of substrate (core) and molecularly imprinted polymers (shell). In this work, a mimetic-core–shell structure was carried out on ciprofloxacin-imprinted membranes (CIMs) for the supplement of antifouling and high-selective surface. (i) Antifouling performance was enhanced based on β-cyclodextrin by forming the supramolecular envelope system with the substrate. (ii) Selectivity was provided by CFX-imprinted sites on the embedded secondary platform (polydopamine). As a result, impressive rebinding selectivity ( α CFX/NFX = 3.47, α CFX/EFX = 3.91 and α CFX/OFX = 5.42) and permselectivity ( β NFX/CFX = 1.57, β EFX/CFX = 1.68 and β OFX/CFX = 1.83) with stable regeneration performance were achieved on optimal CIMs (M4-CIMs). The structure-performance relationship of CIMs were explored by chemical and morphology analyzation. Visual-simulative method was included for a detail and in-depth investigation of sites formation and selective recognition mechanisms. Importantly, results from dead-end filtration of semi-practical samples reveals the potential availability of mimetic-core–shell CIMs for selective separation applications.
研究领域:
膜技术
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水处理
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药物提取
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生物化学分离
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材料科学
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环境工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2018
·
IF 6.14
Yongqiang Zhang,Xin Tan,Xiao Liu,Chunshan Li,Shaojuan Zeng,Hui Wang,Suojiang Zhang
Molecularly imprinted membranes with multifunctional layers for artemisinin separation and purification were fabricated on porous chitosan membranes. The molecularly imprinted layer was fabricated through an in situ activator generated by electron transfer–atom transfer radical polymerization method by using artemisinin as the templet molecule. Properties of the prepared materials were characterized by SEM, IR, XPS, EDS, AFM, etc. Adsorption ability and dynamics, permeation capacity, and reusability have been investigated. Results indicate that this kind of molecularly imprinted membrane possesses desirable adsorption ability for artemisinin (18.89 mg/g) and permselectivity factors (β) as high as 2.15 and 2.03 toward artemether and artesunate, respectively. Mechanism of selective adsorption and permeation was unveiled by molecular simulation, which indicates that the tailor-made recognition sites on the membrane possess higher interaction force toward artemisinin than artemether or artesunate, resulting in artemisinin adsorption by the membrane and separation of this drug from its analogues. The method developed here provides an environmental friendly and sustainable technology for separation and purification of natural products.
研究领域:
材料科学
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药物化学
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环境科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）