ChemCatChem
·
2026
·Vol. 18
·期 1
·e01668
·
IF 3.9
Wen Liu,Chen Xue,Zifeng Yang,LiJuan Luo,Qian Su,Weiguo Cheng
Poly (ionic liquid)s (PILs) are promising catalysts for conversion of CO 2 and epoxides into cyclic carbonates, which could mitigate greenhouse effects while generating economic benefits. To achieve efficient utilization of active sites of PILs, a series of swelling PILs were synthesized in this work by copolymerization of ionic liquid monomer (EIL) with flexible polyethylene glycol dimethacrylate (PEGDMA) at varying molar ratio. The resulting swelling PILs showed significantly improved catalytic activity compared to nonswollen PEIL obtained by EIL self-polymerization. Additionally, a lower EIL/PEGDMA ratio during synthesis increased the flexible segment length between ionic liquid sites, which enhanced the swelling ability of PILs and further improved the catalytic activity. Among the synthesized PILs, the optimized P(EIL-co-EG)1.0, which showed the strong swelling ability, achieved catalytic performance comparable to that of monomers homogeneous catalysis, yielding 93.4% PC under the reaction conditions optimized (120°C, 1.5 mol% catalyst, 2 MPa CO 2 , 3 h). Furthermore, P(EIL-co-EG)1.0 demonstrated broad substrate scope toward various epoxides. Finally, based on FT-IR and NMR spectroscopy, a plausible catalytic mechanism was proposed. This study offers valuable insights into the enhancement of heterogeneous catalyst efficiency and the rational design of quasihomogeneous catalytic systems. Graphical A series of PILs with tailored swelling abilities were synthesized by copolymerizing ionic liquid monomers with flexible polyethylene glycol dimethacrylate at varying molar ratios, which aimed to achieve full utilization of PILs internal active sites and quasihomogeneously catalytic conversion of epoxides and CO 2 to cyclic carbonates.
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CARBOHYDRATE POLYMERS
·
2026
·
IF 12.5
Yuxuan Yang,Sufeng Zhang,Lijing Zhang,Nan Zhang,Liwei Qian,Wenqi Song
To address the low binding-site density and mass-transfer limitations of conventional protein-molecularly imprinted polymers (P-MIPs), this study proposes a synergistic strategy combining a custom-synthesized imidazolium ionic liquid monomer, 1-vinyl-3-diacetamidoimidazolium chloride ([VDAIM]Cl), with a bacterial-cellulose@UiO-66 (BC@UiO-66) hybrid scaffold. Spectral characterization and molecular docking simulations revealed multiple strong interactions between [VDAIM]Cl and bovine serum albumin (BSA), enhancing the stability of the pre-polymer complex compared to conventional monomers. Meanwhile, benefiting from the structural advantages of BC, the template immobilization-surface imprinting strategy (TIS- co -SIT) was employed to construct a high-affinity imprinted membrane. The resulting BC@UiO-66@MIPs exhibited fast adsorption equilibrium within 50 min, a large binding capacity of 502.5 ± 27 ( n = 3) mg g −1 , and a high imprinting factor ( IF ) of 6.27 ± 0.84 (n = 3). Furthermore, BC@UiO-66@MIPs also demonstrated excellent reusability, retaining over 90% of its initial binding capacity after ten adsorption-desorption cycles. Notably, the materials exhibited outstanding selectivity, with a competitive adsorption factor ( α ) of 5.57 ± 0.62 ( n = 3) in binary BSA/BHb mixtures, and a high permeation selectivity coefficient ( β ) of 6.37. The membrane successfully isolated BSA from complex calf serum, confirming its practical potential for protein purification. This study constructs an efficient molecular imprinting system by integrating rational monomer design with advanced porous supports to enhance protein recognition and purification.
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Small
·
2024
·Vol. 20
·期 29
·2310092
·
IF 13
Yu-Ren Xue,Chang Liu,Hao-Cheng Yang,Hong-Qing Liang,Chao Zhang,Zhi-Kang Xu
Supported ionic liquid membranes (SILMs), owing to their capacities in harnessing physicochemical properties of ionic liquid for exceptional CO 2 solubility, have emerged as a promising platform for CO 2 extraction. Despite great achievements, existing SILMs suffer from poor structural and performance stability under high-pressure or long-term operations, significantly limiting their applications. Herein, a one-step and in situ interfacial polymerization strategy is proposed to elaborate a thin, mechanically-robust, and highly-permeable polyamide armor on the SILMs to effectively protect ionic liquid within porous supports, allowing for intensifying the overall stability of SILMs without compromising CO 2 separation performance. The armored SILMs have a profound increase of breakthrough pressure by 105% compared to conventional counterparts without armor, and display high and stable operating pressure exceeding that of most SILMs previously reported. It is further demonstrated that the armored SILMs exhibit ultrahigh ideal CO 2 /N 2 selectivity of about 200 and excellent CO 2 permeation of 78 barrers upon over 150 h operation, as opposed to the full failure of CO 2 separation performance within 36 h using conventional SILMs. The design concept of armor provides a flexible and additional dimension in developing high-performance and durable SILMs, pushing the practical application of ionic liquids in separation processes.
研究领域:
膜科学与技术
·
气体分离
·
环境化学
·
材料化学
·
化学工程
·
可持续能源技术
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2018
·Vol. 43
·期 7
·3741-3749
·
IF 4.229
Xingcheng Hu,Ravi Muchakayala,Shenhua Song,Jingwei Wang,Jianjun Chen,Manlin Tan
Polymeric ionic liquid-based gel electrolyte films are a new generation of electrolyte materials for flexible energy storage device applications. In this work, Li-ion conducting gel electrolyte films are prepared with the polymeric ionic liquid poly(diallydimethylammonium) bis(trifluoromethane sulfonyl)imide (poly(DADMATFSI)) as the host polymer and the lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) salt as the dopant . The crystalline nature, thermal stability, ionic conductivity and electrochemical stability window of the polymeric electrolyte films are analyzed by various characterization techniques. It is found that the polymeric electrolyte films exhibit high flexibility and excellent thermal stability. Their room-temperature electrical conductivity increases with increasing LiTFSI concentration and reaches a high value of 1.00 × 10 −3 S cm −1 at 20 wt% LiTFSI. The ionic transference numbers of the polymeric electrolyte films are in the range of 0.98–0.99, indicating that they are perfect ion conductors. Finally, the electrochemical stability window of the 20 wt% LiTFSI-doped polymeric electrolyte film is determined as approximately 6 V, which is a promising value for flexible energy storage device applications.
研究领域:
材料科学
·
电化学
·
高分子化学
·
能源存储
·
功能材料
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JOURNAL OF POWER SOURCES
·
2017
·
IF 6.395
Hanyu Huo,Ning Zhao,Jiyang Sun,Fuming Du,Yiqiu Li,Xiangxin Guo
Paramount attention has been paid on solid polymer electrolytes due to their potential in enhancement of energy density as well as improvement of safety. Herein, the composite electrolytes consisting of Li-salt-free polyethylene oxides and 200 nm-sized Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 particles interfacially wetted by [BMIM]TF 2 N of 1.8 μL cm −2 have been prepared. Such wetted ionic liquid remains the solid state of membrane electrolytes and decreases the interface impedance between the electrodes and the electrolytes. There is no release of the liquid phase from the PEO matrix when the pressure of 5.0 × 10 4 Pa being applied for 24 h. The interfacially wetted membrane electrolytes show the conductivity of 2.2 × 10 −4 S cm −1 at 20 °C, which is one order of magnitude greater than that of the membranes without the wetted ionic liquids. The conduction mechanism is related to a large number of lithium ions releasing from Li 6.4 La 3 Zr 1.4 Ta 0.6 O 12 particles and the improved conductive paths along the ion-liquid-wetted interfaces between the polymer matrix and ceramic grains. When the membranes being used in the solid-state LiFePO 4 /Li and LiFe 0.15 Mn 0.85 PO 4 /Li cells at 25 °C, the excellent rate capability and superior cycle stability has been shown. The results provide a new prospect for solid polymer electrolytes used for room-temperature solid-state lithium batteries .
研究领域:
材料科学
·
电化学
·
能源材料
·
固态电池
·
高分子电解质
·
离子传导机制
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ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Heng Zhang,Yi Lu,Chang-Dong Gu,Jian-Bin Cai,Xiu-Li Wang,Jiang-Ping Tu
Amorphous Ni–P–C films are fabricated by combining the electrodeposition of Ni–P films from a eutectic-based ionic liquid and the direct current magnetron sputtering of amorphous carbon top-layer. The carbon top-layer with a thickness of about 10 nm is homogeneously coated on the surface of the Ni–P films. A comparison study is undertaken between Ni–P and Ni–P–C films to evaluate the microstructure and the electrochemical performances of the composite films as anode materials for lithium ion batteries , which allow the decoupling of the effect of the carbon layer . It is found that at lower discharge–charge current densities, the cyclability of both Ni–P and Ni–P–C films is similar. As the discharge–charge current density increases, the Ni–P–C film exhibits improved capability and reversibility over the Ni–P film. The Ni–P–C film delivers an initial discharge capacity of 1060 mAh g −1 at 250 mA g −1 and the capacity retention after 50 cycles is 62%, much higher than that of the Ni–P film (51%). The cyclability of Ni–P–C film at different discharge–charge current densities from 200 to 500 mA g −1 is also much better than those of Ni–P film. This study indicates that the introduction of a carbon top-layer on Ni–P film could significantly improve the electrochemical performances due to the decreased interface electric resistance and the structure stability.
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源存储
·
薄膜技术
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SENSORS AND ACTUATORS B-CHEMICAL
·
2012
·
IF 3.898
Wei Sun,Li Xu,Xiuzhen Wang,Jun Liu,Guangjiu Li,Zhenfan Sun
A graphene, chitosan and 1-ethyl-3-methylimidazolium tetrafluoroborate composite was prepared and modified on the surface of a carbon molecular wire electrode. The fabricated electrode was characterized by different methods such as scanning electron microscopy, cyclic voltammetry and electrochemical impedance spectroscopy . Electrochemical behaviors of guanosine-5′-triphosphate (GTP) were carefully studied on the modified electrode . The electrochemical parameters such as the charge transfer coefficient ( α ) and the electrode reaction standard rate constant ( k s ) were calculated with the results as 0.57 and 1.56 × 10 −4 s −1 . Under the optimized conditions, the oxidation peak current was proportion to the GTP concentration in the range from 0.007 to 70.0 μmol/L with the detection limit of 0.232 nmol/L (S/N = 3). Moreover, the proposed method showed good selectivity to the GTP detection without the interference of coexisting substances, and was further applied to the artificial samples determination with satisfactory results.
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Energy Sources Part A-Recovery Utilization and Environmental Effects
·
2021
·
IF 3.447
Yan Li,Weibo Wu,Hu Li,Wenfeng Zhao,Song Yang
γ-Valerolactone (GVL) is a versatile biomass-derived molecule for both value-added chemicals and biofuels, which is typically prepared from levulinates over metal particles or oxides in the presence of hydrogen, formic acid or alcohol. Herein, we reported a rapid and mild approach for cascade hydrogenation-cyclization of ethyl levulinate (EL) to GVL in the presence of readily available ionic liquid tetrabutylammonium fluoride ([TBA]F) and polymethylhydrosiloxane (PMHS) as catalyst and hydrogen source, respectively. After reacting at room temperature for 30 min, a high GVL yield of 85% with TOF value of 52 h−1 could be obtained over 3 mol% [TBA]F. In addition to optimizing reaction parameters, the catalytic mechanism was also elucidated for the one-pot sequential transformation of EL to GVL.
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CATALYSIS LETTERS
·
2026
·Vol. 156
·期 9
·245
·
IF 2.5
Xia Ruixin,Song Jiahe,Guo Bao,Sun Daolai,Lv Jianhua
An ionic liquid-grafted catalyst, denoted as IL@MIL-101-NH 2 , was synthesized by introducing a novel functionalized bis-imidazolium ionic liquid containing carboxyl groups into the MIL-101-NH 2 (Cr) using a simple one-step method. The structural features of the catalyst were characterized by FT-IR, XRD, XPS, BET, SEM and so on, and its catalytic performance in the cycloaddition reaction of carbon dioxide (CO 2 ) with propylene oxide (PO) to propylene carbonate (PC) was investigated. The results demonstrated that IL@MIL-101-NH 2 exhibited excellent catalytic activity. Under the conditions of 110 °C, 2 MPa, 3 h, and a catalyst loading of 3.0 wt%, a PO conversion of 95.1% and a PC selectivity of 98.7% were achieved. The superior catalytic performance of IL@MIL-101-NH 2 was attributed to the synergistic effect among the Cr 3+ metal active centers, nucleophilic Br − species and hydrogen-bond-donating –COOH groups. In addition, the catalyst maintains good catalytic performance after four consecutive cycles, indicating its favorable stability and promising application potential. Graphical
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JOURNAL OF CHROMATOGRAPHY A
·
2026
·
IF 4
Xiaoyu Si,Siwen Zhang,Lulu Li,Zunlai Sheng
Ionic liquids enable green and efficient luteolin extraction from peanut shells. • Molecular dynamics reveals hydrogen bonding extraction mechanism. • NKA-9 macroporous resin efficiently enriches and purifies luteolin. • Recycled ionic liquid retains over 90% extraction efficiency. • Integrated process supports circular bioeconomy development. Peanut shells, an abundant agricultural by-product, represent a promising source of the bioactive flavonoid luteolin. This study developed a green and efficient strategy for luteolin recovery by integrating ionic liquid-based microwave-assisted extraction (IL-MAE) with macroporous resin purification. The IL-MAE process was optimized using response surface methodology (RSM), achieving a maximum yield of 3.36 mg/g under optimal conditions: [BMIM][BF₄] concentration of 2 mol/L, liquid-to-solid ratio of 27 mL/g, microwave power of 800 W, and irradiation time of 120 s. Molecular dynamics simulations revealed that hydrogen bonding between luteolin and the ionic liquid governs the extraction mechanism. The crude extract was further purified using NKA-9 macroporous resin, which exhibited high adsorption capacity (2.10 mg/g) and desorption efficiency (93.57%). Dynamic adsorption studies established optimal conditions: sample pH 3.0, loading volume of 1.95 bed volumes (BV), flow rate of 2 BV/h, and temperature of 25 °C. Efficient desorption was achieved by sequential elution with water, 50% ethanol, and 70% ethanol (5 BV each), yielding a final luteolin purity of 84.1%. Notably, the ionic liquid was successfully recycled with over 90% of its initial extraction efficiency retained after multiple cycles. This integrated approach offers a sustainable and scalable pathway for valorizing agricultural waste into high-value bioactive compounds within a circular bioeconomy framework.
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BIOMACROMOLECULES
·
2026
·Vol. 27
·期 8
·5753-5765
·
IF 5.9
Du Jingjing,Zhu Xixiang,Wang Zengsheng,Yu Maolin,Xu Lijian,Xu Jianxiong
Conductive
hydrogels have risen as a promising material for flexible
wearable sensors. However, achieving a hydrogel that simultaneously
possesses high mechanical properties, conductivity, self-healing ability,
and adhesion remains a challenge. Herein, we developed a dual-network
ionic conductive hydrogel (P-P(C-A)-PA) by incorporating poly(vinyl
alcohol) and a copolymer of catechol-modified ionic liquid and acrylamide.
The optimized hydrogel exhibited outstanding mechanical performance
(stress: 883 kPa, strain: 1120%), self-healing efficiency (stress
recovery of 58.6% ± 4.6% and toughness recovery of 57.7% ±
5.5%), ionic conductivity (3.91 S/m), and adhesion strength (50 kPa
on Ecoflex). The hydrogel-based flexible sensor reliably monitored
human motion with rapid and accurate signal response even after self-healing.
The hydrogel-based triboelectric nanogenerator showed excellent output
performance (180 V, 7.9 μA, and 65 nC), further identifying
grasped objects and monitoring finger rehabilitation before and after
self-healing. These results highlighted the considerable potential
of our hydrogel for applications in advanced electronics.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Shuo Yang,Haohang Yuan,Shenghua Xue,He Kang,Shujuan Liu,Qian Ye,Feng Zhou
● A fouling-resistant coating based on silsesquioxane and ionic liquid was prepared via an epoxy-amine reaction. ● The resulting Glass/AE-IL-NH 2 demonstrates good antifouling performance and a significantly reduced friction coefficient. ● The antifouling performance stems from the synergistic effect between ionic liquids and low-surface-energy silsesquioxane. In this work, an epoxy-functional silsesquioxane (AEOS) was synthesized via the hydrolysis-condensation of 3-(glycidyl)propoxy trimethoxysilane and deposited onto glass substrates to form a silsesquioxane coating (Glass/AE). An imidazolium-based ionic liquid containing an amide group (IL-NH 2 ) was subsequently grafted onto the coating through ring-opening reactions, yielding an ionic liquid functionalized silsesquioxane coating (Glass/AE-IL-NH 2 ). The resulted coating exhibited an antibacterial rate exceeding 80% against E. coli and S. aureus , while achieving anti-adhesion removal efficiencies of 80% and 79% against Porphyridium and Dunaliella , respectively. The antifouling function results from the synergistic effect of the low surface energy of the silsesquioxane matrix and the bactericidal activity of the grafted ILs. In addition, the Glass/AE-IL-NH 2 coating demonstrated excellent water-lubrication properties and high optical transparency, making it a promising candidate for marine antifouling applications that require both optical clarity and long-term resistance to biofouling. Download: Download high-res image (245KB) Download: Download full-size image
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危险品化学品经营许可证（带存储）