LANGMUIR
·
2026
·
IF 4.4
Xiaohui Lv,Zhiyu Dai,Xi Cheng,Wenjun Zhang,Yongjun Men
Abstract By regulating the microenvironment at the catalyst interface, the mass transfer processes and the behavior of reaction intermediates in the electrochemical reduction of carbon dioxide (CO2RR) can be effectively optimized. However, achieving a balance between interfacial water management and reactant accessibility remains a challenge during the generation of C2 products catalyzed by copper-based catalysts. In this work, we employ an in situ polymerization approach to construct functional layers of hydrophobic poly(ionic liquid) (HPIL) with tunable alkyl chain lengths (C8, C12, C16) on the surface of CuO nanosheets (CuO NSs) to regulate their interfacial properties. The longer alkyl chain (C16) facilitates the formation of a dense superhydrophobic structure that, together with the cationic imidazolium groups, significantly suppresses interfacial water activity while retaining CO2-philic character, thereby creating a local reaction microenvironment conducive to C–C coupling. In conventional H-type electrolysis cells, the optimized Cu@P(VIM-16A-DVB) catalyst achieved an ethylene Faraday efficiency of 36% (compared to only 18% for the bare copper catalyst), while the hydrogen evolution reaction (HER) decreased to 34% (compared to 47% for the bare copper catalyst). This reduction was accompanied by a decrease in the Faraday efficiency of C1 products (carbon monoxide and formic acid). This indicates a shift in the system from multiple coexisting products toward a more concentrated ethylene-dominant pathway. Notably, we have found that excessively long alkyl chains induce overly dense hydrophobic structures that impair reactant accessibility and increase mass transfer resistance. This work establishes an interfacial design principle: the poly(ionic liquid) functional layer requires tailored wettability to guide the copper-based CO2RR toward C2 product formation. In summary, precisely engineering the local reaction microenvironment by tuning the alkyl chain length of the HPIL functional layer represents an effective strategy, offering universal insights for suppressing side reactions in aqueous electrolytes.
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高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 36
·e74557
·
IF 2.3
Xiaowei Zhou,Yuerong Wang,Youqing Sun,Dan Liu,Thabo T. I. Nkambule,Alex T. Kuvarega,Bhekie B. Mamba,Jianzhou Gui
In this study, a series of Ionic liquid-derived carbon dots (IL-CDs) were synthesized by microwave method from L-histidine and imidazolium-based ILs included 1-butyl-3-methylimidazolium chloride, 1-hexyl-3-methylimidazolium chloride and 1-decyl-3-methylimidazolium chloride. Their structures were elucidated using Fourier transform infrared spectroscopy (FTIR), Ultraviolet–visible spectrum (UV–vis), and nuclear magnetic resonance (NMR). The inhibition efficacy of IL-CDs on 45# steel within a 298 K, 1 M HCl solution system was investigated employing various techniques, including electrochemical analysis, weight loss measurement, scanning electron microscopy (SEM), atomic force microscopy (AFM), and molecular dynamics simulations. The microstructure and surface properties IL-CDs were obtained through a series of characterizations; and their corrosion inhibition performance for 45# steel was evaluated using weight loss and electrochemical methods in 1 M HCl solution. The electrochemical impedance spectroscopy (EIS) results showed that the corrosion inhibition efficiency of CDs in 1 M HCl solution could reach 98.2% at a concentration of 15 ppm, and 95% even at an increased temperature of 313 K. The strong adsorption of IL-CDs follows the Langmuir adsorption model, and the Gibbs free energy increases with the chain length of ionic liquids. The adsorption behavior of the IL-CDs on the carbon steel surface shows the chemisorption feature. Graphical The corrosion inhibition mechanism involves carbon dots that adsorb on the surface of carbon steel to form a hydrophobic film, which suppresses hydrogen evolution at the cathode and oxidation reactions at the anode.
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JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Junqi Wang,Yaming Sun,Liwen Shi,Wenjie Sun,Liuchuang Zhao,Chenchen Song,Lijun He
A stable and high-performance stationary phase is essential to achieve high-resolution separation of complex samples. Covalent organic framework (COF) has superior physicochemical properties and outstanding potential for application in chromatographic separation. However, hydrophilic selectivity and structural stability of COF pose concerns. Composites of COF with poly(ionic liquid) (PIL) are a promising solution to these problems. In this study, silica was first decorated with COF DVA-TAPB to obtain COF DVA-TAPB @SiO 2 microspheres (DVA and TAPB represent 2,5-diethenyl-1,4-benzenedicarboxaldehyde and 1,3,5-tris(4-aminophenyl)benzene, respectively). Subsequently, PIL-modified COF DVA-TAPB @SiO 2 (PIL/COF DVA-TAPB @SiO 2 ) microspheres were prepared by polymerization of 1-sulfopropyl-3-vinylimidazolium chloride ionic liquid onto COF DVA-TAPB @SiO 2 . The obtained PIL/COF DVA-TAPB @SiO 2 microspheres served as a multi-mode chromatographic stationary phase and efficiently separated various hydrophobic and hydrophilic analytes. Owing to the synergistic effects between COF DVA-TAPB and PIL, the separation performance of PIL/COF DVA-TAPB @SiO 2 column was significantly superior than COF DVA-TAPB @SiO 2 and PIL/SiO 2 columns. Additionally, the PIL/COF DVA-TAPB @SiO 2 column demonstrated good stability and reproducibility, with intra-day relative standard deviations for retention time <0.14% ( n = 10) and peak area <1.64% ( n = 10) following nearly 1000 continuous injections. This study not only endows functional COF with specific properties, but also paves a new path for the efficient separation and analyses of complex samples.
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高影响因子
IONICS
·
2025
·
IF 2.6
Gao Chenxiang,Zhang Hengpu,Hu Xiangpan,Ma Xiaoyan
Solid polymer electrolytes (SPEs) are flexible and safer, but inferior ionic conductivity, electrode/electrolyte interface and mechanical strength limit their use for lithium-ion batteries. Herein, we design and prepare a high ionic conductivity, low internal resistance, stable SPE by in situ polymerization of vinylene carbonate and 1-vinyl-3-pentyl cyano imidazole (trifluoromethanesulfonyl) imide in the mesoporous silica-modified polypropylene separators. Mesoporous silica modified polypropylene separators could efficiently adsorb polymer precursor before in-suit polymerization and inhibit lithium dendrite growth during cycling, improving the mechanical strength of SPEs. The poly ionic liquid with many polar groups could effectively promote the dissociation of lithium salts, while its crosslinked network provides Li + transport channels to facilitate the migration of Li + . Meanwhile, in situ polymerization leads to robust electrode/electrolyte interfaces, which reduce the internal resistance and improve the stability of batteries. The optimized SPE (KCE) has a room temperature ionic conductivity of 8.04 × 10 −4 S cm −1 and an electrochemical window of 4.5 V. Assembled Li//KCE//Li cell could run stably at a current density of 0.1 mA cm −2 for 1000 h. Furthermore, the capacity retention rate of LFP//KCE//Li battery after 500 cycles can maintain over 90% and NCM811//KCE//Li battery shows a capacity retention rate of 86.5% after 100 cycles. The LFP//KCE//Li soft pack battery can light an LED bulb and has an open circuit voltage of 2.95 V, showing great potential in the flexibility field. This work provides a workable strategy for improving the performance of solid polymer electrolytes.
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高影响因子
LANGMUIR
·
2026
·
IF 3.9
Yunxin Wang,Enhui Zhang,Zhuocheng Li,Yue Wang,Yiming Han,Jiabao Pan,Weimin Li
This study synthesized an environmentally friendly halogen-free bis(mandelato)borate ionic liquid ([C10MIm][BMB], BMB) as an additive for lithium-based grease. A comprehensive evaluation of its rheological and tribological properties was conducted combined with molecular dynamic simulations to probe the interaction mechanism between the additive and soap molecules. A marked increase of 22 °C in the dropping point was observed with the addition of 2 wt % BMB, but the cone penetration was unaltered. At an elevated temperature of 125 °C, the thixotropic loop area was reduced by 51% compared with that of the base grease. Rheological analysis confirmed that BMB effectively enhanced the structural recovery capability of the grease at high temperatures, albeit with a moderate reduction in its structural strength. Based on tribological testing, the incorporation of BMB resulted in a 16.8% lower average coefficient of friction (COF) and 71% less wear volume compared to the base grease. Furthermore, it maintained stable lubrication under severe operating conditions (100 N and 130 °C), whereas the base grease failed. Mechanistic studies indicated that the anions of BMB adsorb electrostatically onto the friction interface and decompose to form a high-hardness B2O3/iron oxide composite boundary lubrication film. Molecular dynamics simulations further confirmed that BMB promotes the formation of a denser soap fiber skeleton structure by mitigating the intermolecular interactions between soap fibers. BMB significantly enhances the thixotropic recovery performance of the grease at elevated temperatures by facilitating a more stable and reversible three-dimensional soap fiber network, while the generated densely structured and rigid B2O3 boundary lubrication film ensures excellent high-temperature lubrication and antiwear capabilities. This work offers an effective strategy for developing high-performance environmentally friendly greases suitable for high-temperature and high-load applications.
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高影响因子
ACS Nano
·
2018
·
IF 13.709
Keyi Chen,Ye Zhang,Chilin Li
Metal-polysulfide batteries are attracting broad attention as conversion reaction systems of high theoretical energy density and low cost. However, their further applications are hindered by the low loading of active species, excess conductive additive, and loose (nanostructured) electrode networkss. Herein, we propose that compact grain stacking and surface fluorination are two crucial factors for achieving high-rate and long-life pyrite (FeS2) cathodes enabled by sulfurating ionic liquid wrapped open-framework fluorides. Both of the factors can accelerate the Li- and Na-driven transport across the pyrite–electrolyte interface and conversion propagation between adjacent grains. Such an electrode design enables a highly reversible capacity of 425 mAh/g after 1000 cycles at 1 C for Li storage and 450 mAh/g after 1200 cycles at 2 C for Na storage, even under a high loading of pyrite grains and ultrathin carbon coating (<2 nm). Its cathode energy density can reach to 800 and 350 Wh/kg for Li and Na cells, respectively, under a high power density of 10000 W/kg. The cross-linkage between ionic liquid and fluoride precursors appears to be a solution to the reinforcement of surface fluorination.
研究领域:
材料科学
·
电化学
·
储能
·
纳米材料
·
电池技术
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高影响因子
RSC Advances
·
2015
·Vol. 5
·期 96
·79022-79030
·
IF 3.84
Lei Xu,Xiaoqiong Lu,Xiaomin Cheng
A series of novel cotton cellulose-graft-polycaprolactone copolymers with different grafting contents were successfully prepared via ring-opening polymerization (ROP) in an ionic liquid 1-N-butyl-3-methylimidazolium chloride ([Bmim]Cl). The structures of the grafting copolymers were systematically characterized by FTIR, CP/MAS13C-NMR, XRD, SEM and AFM, while thermal properties were investigated by DSC and TGA. Subsequently, Langmuir, Freundlich, Temkin, and Dubinin–Radushkevich (D–R) adsorption isotherms were representative to simulate adsorption isotherms of Cu(II) and Ni(II) ions in aqueous solution. From the comparison of different adsorption isotherm models, it was found that adsorption of Cu(II) by modified cellulose followed Langmuir, Freundlich and Temkin models, while that of Ni(II) followed the Freundlich model. The results of adsorption indicated that the selectivity sequence of metal ions on graft copolymers was Cu(II) > Ni(II) and the maximum removal capacities of Cu(II) and Ni(II) ions were 98.7% and 35.6%, respectively. Hence, the graft copolymers exhibited significant potential to be an environmentally feasible biosorbent for removal of Cu(II) and Ni(II) ions from aqueous solution.
研究领域:
环境科学
·
高分子化学
·
材料科学
·
重金属去除
·
吸附技术
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高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Huixiao Duo,Sitian Gu,Qiaoyi Chen,Yifan Han,Xiudan Hou
A novel ionic liquid-modified magnetic COFs composite with facile magnetic separation was successfully synthesized. • Multiple synergistic adsorption mechanisms for analytes were verified via theoretical calculation and characterizations. • A sensitive and robust MSPE-HPLC method with low LOD was established for neonicotinoid detection. • It was successfully applied to determine neonicotinoid in traditional Chinese medicines with ideal matrix effects. • This work broadens the application of COFs in pesticide monitoring of complex herbal matrices. In this work, an ionic liquid (PrSO 3 HMIm + PF 6 − ) was incorporated into the pore of covalent organic frameworks (COFs) to support the skeleton and further prevent collapse. The integrated PrSO 3 HMIm + PF 6 − @COFs were modified onto the Fe 3 O 4 magnetic nanoparticles, endowing the composite with convenient magnetic separation and multiple analyte-target binding capabilities. Through the theory calculation and other physical characterizations, some adsorption interactions were verified, mainly including the hydrogen bond, cationic–π, π–π, p–π, electrostatic and electron donor–acceptor interactions, and the adsorption mechanism was also discussed. Various parameters affecting the extraction efficiency were investigated, including solution pH, dosage of adsorbent, adsorption time, type of eluent, desorption time and dosage of eluent. The developed PrSO 3 HMIm + PF 6 − @COFs-MSPE-HPLC method demonstrated good linearity (R 2 ≥ 0.9903), acceptable accuracy (81.57%–119.77%), good repeatability (2.89%–5.03%), good reproducibility (3.23%–5.80%), low limits of detection (0.015–0.027 μg·L −1 ). It was used for the detection of neonicotinoids in six traditional Chinese herbs with desirable matrix effects (5.24%–19.83%). The approach has broadened the application scope of COFs in the extraction and determination of pesticides in traditional Chinese herbs. Download: Download high-res image (110KB) Download: Download full-size image
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CERAMICS INTERNATIONAL
·
2022
·
IF 5.532
Fangxian Wang,Juanxuan Guo,Shihao Li,Yuwei Wang,Yang Cai,Zhuo Li,Yongming Shen,Changping Li
As a typical latent functionally thermal fluid with large energy storage capacity and good liquidity, phase change material emulsion (PCME) plays a broad and important role in solar energy utilization. However, the high-temperature instability and supercooling problems of PCME limit its practical application. The ionic liquid (IL)-based PCME allows for the possibility of being used as a heat transfer fluid (HTF) under more extreme temperature conditions. In this work, stearic acid (SA)/IL PCME, prepared by one-step self-assembly of MXene nanosheets at the SA/IL interface, can effectively absorb and convert solar energy into thermal energy. Furthermore, MXene-decorated SA/IL PCMEs have good high-temperature stability, little supercooling degree (0.9–3.1 °C), and large energy storage capacity. The maximum apparent specific heat capacity and average absorbance of the MXene-decorated SA/IL PCME are 4.5 and 303.1 times higher than those of IL, respectively. Under 2 sun irradiation, the 0.05–20 wt% MXene-decorated SA/IL PCME achieves high photo-thermal conversion efficiencies (91.3% at 68.9 °C, 39.4% at 115.1 °C) due to its large energy storage capacity and excellent optical absorption property. The simple interfacial self-assembly provides a promising strategy to prepare high-performance SA/IL PCME used as a novel HTF for medium-temperature solar energy utilization systems.
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高影响因子
Catalysis Science & Technology
·
2022
·Vol. 12
·期 21
·6416-6426
·
IF 6.177
Binxiong Guang,Wei Zhang,Yiwei Zhang,Yahui Xiao,Yong Liu
A novel, efficient and economical process of cyclohexanol (CHOL) production based on cyclohexene esterification–hydrogenation has become a research hotspot in recent years. Wherein, hydrogenation of cyclohexyl acetate (CHA) derived from the esterification of cyclohexene with acetic acid is a crucial step. Combining the advantages of metal complexes and heterogeneous catalysts, the robust Cu(I) coordinated amino-functionalized poly(ionic liquid)s (PILs-Cu(I)) were, in this research, synthesized for use in the mild and highly selective hydrogenation of CHA to CHOL. The results of FT-IR, UV-vis, BET, XPS and SEM-EDS confirmed that the Cu(I) was dominant in the PILs-Cu(I), and was homogeneously and stably coordinated on the amino-functionalized poly(ionic liquid)s. Benefiting from that, the PILs-Cu(I) was endowed with an unprecedented performance in the mild and highly selective hydrogenation of CHA to CHOL. Specifically, 95.6% CHA conversion with 96.6% selectivity of CHOL, and 97.0% selectivity of ethanol was obtained under extremely mild conditions of 80 °C and 2 MPa H2. Furthermore, no significant activity loss was observed over the PILs-Cu(I) after recycling for at least five times, delivering excellent stability and reusability.
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高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Xinzhu Gao,Wei Yuan,Yang Yang,Yaopeng Wu,Chun Wang,Xuyang Wu,Xiaoqing Zhang,Yuhang Yuan,Yong Tang,Yu Chen,Chenghao Yang,Bote Zhao
Utilizing ionic liquids (ILs) with low flammability as the precursor component for a gel polymer electrolyte is a smart strategy out of safety concerns. Solvate ionic liquids (SILs) consist of equimolar lithium bis(trifluoromethylsulfonyl)imide and tetraglyme, alleviating the main problems of high viscosity and low Li+ conductivity of conventional ILs. In this study, within a very short time of 30 s, a SIL turns immobile using efficient and controllable UV-curing with an ethoxylated trimethylolpropane triacrylate (ETPTA) network, forming a homogeneous SIL-based gel polymer electrolyte (SGPE) with enhanced thermal stability (216 °C), robust mechanical strength (compression modulus: 1.701 MPa), and high ionic conductivity (0.63 mS cm–1 at room temperature). A Li|SGPE|LiFePO4 cell demonstrates high charge/discharge reversibility and cycling stability with a capacity retention rate of 99.7% after 750 cycles and an average Coulombic efficiency of 99.7%, owing to its excellent electrochemical compatibility with Li-metal. A close-contact electrode/electrolyte interface is formed by in situ curing of the electrolyte on the electrode surface, which enables the pouch full cell to work stably under the conditions of cutting/bending. In view of the excellent mechanical, thermal, and electrochemical performances of SGPE, it is believed to be a promising gel polymer electrolyte for constructing high-safety lithium-ion batteries (LIBs).
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2023
·
IF 3.8
Xiang Luo,Xunyi Zhou,Song Wei
Inorganic quantum dot films possess outstanding optical and electrical properties, which are promising in the fields of temperature sensors, thin film transistors, photodetectors, and quantum dot light-emitting diodes (QLEDs). In this paper, high-performance Ag-doped Zn x Cd 1−x S quantum dot films with full-color emission were prepared by a facile and environmentally friendly ionic liquid-assisted approach successfully. The ionic liquid solvent which plays a critical role in the preparation process was formed by the addition of n-butylammonium and n-butylamine in methanol. The n-butylammonium butyrate ionic liquid is low-temperature thermally degradable and can be easily removed from the final quantum dot films by a sintering process. The emitting color of Ag-doped Zn x Cd 1−x S quantum dot films can be easily tuned by changing the contents of Ag, Zn, and Cd in the films. The final as-prepared Ag-doped Zn x Cd 1−x S quantum dot films exhibit the high performance of full-color emission, simple process, and low preparation cost. This work will provide a new strategy to prepare high-performance photoelectric devices with a facile ionic liquid-assisted green solution approach.
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