TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Zhaozhao Yang,Pengyang Li,Guoqing Chen,Bofeng Fu,Yongheng Dong,Xingang Yang
Ionic liquids (ILs), as novel electric-controlled lubricants, can regulate their tribological behavior under electrified sliding. This study systematically investigates the tribological properties and interface adsorption dynamics of ILs with different chain lengths under electric field control, combining macroscopic experiments and molecular dynamics simulations. Compared to the base lubricant, longer-chain ILs form more stable tribofilms at the electrified interface, reducing the friction coefficient and wear volume by 33.13 % and 79.61 %, respectively. The −COO – group plays a dominant role in tribofilm formation and alters the dynamic migration of ILs. The applied electric field weakens the hydrogen bonding between ILs and the base lubricant, promotes ILs accumulation at the electrified interface, and effectively reduces shear stress.
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高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2025
·
IF 5.2
Shanqin Ge,Long Chen,Wei Li,Qingzhao Cai,Genxiang Gong,Junhao Wu,Jinhong Yu,Kazuhito Nishimura,Nan Jiang,Tao Cai
Molecular additives have garnered widespread attention in the fields of lubrication and corrosion protection due to their designable interfacial film-forming efficiency. Herein, three protic ionic liquids (PILs) with the same cation but different anions have been designed and synthesized. Their physicochemical properties, tribological properties and anti-corrosion properties were systematically investigated. Results demonstrated that under dynamic steel-on-steel friction conditions, the PILs can maximally reduce the running-in period, friction coefficient, and wear rate by 90 %, 40 %, and 97 %, respectively, compared to the commercial ionic liquid, BMIMPF 6 . Under static copper corrosion conditions, the PILs efficiently adsorb onto the copper surface and formed a dense oxide layer on its surface, thus achieving excellent corrosion protection for the copper substrates. Molecular dynamics (MD) simulation results indicate that the exceptional lubricity of PILs is due to its ability to rapidly adsorb onto the metal surface through multiple interaction sites on both its anionic and cationic components, thereby reducing the running-in period and swiftly establishing a lubricating film. This study provides insights into the development of molecular additives featuring multiple adsorption sites, with potential applications in the fields of tribology and corrosion engineering.
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高影响因子
ENERGY
·
2025
·
IF 9.4
Huizhe Niu,Ying Lu,Zhe Zhang,Manni Li,Jiaxiang Liu,Fan Qu,Zemin He,Wenqi Song,Yuzhen Zhao,Xiaoqin Liu,Zongcheng Miao
Gel polymer electrolytes (GPEs) are valuable in preparing lithium-ion batteries (LIBs) with high safety, high energy density and high cycle life. However, the liquid component increases the performance of GPEs while decreasing their mechanical strength. For improving the mechanical strength and ionic conductivity of GPEs, one plicated mesoporous silica nanoparticles (PMSN) was prepared and introduced into the poly(ionic liquids) electrolyte to prepare a composite poly(ionic liquids) electrolyte (PIL-GPE@PMSN). PMSN with a high specific surface area could increase its contact area with the polymer electrolyte to form more Li + migration channels. With the introduction of PMSN, the ionic conductivity of PIL-GPE@PMSN is elevated to 1.76 × 10 −3 S cm −1 , and the maximum tensile stress increased to 1.25 MPa. In addition, the good interfacial properties reduce the interfacial impedance between the electrolyte and electrodes, so Li/PIL-GPE@PMSN-5 %/LiFePO 4 batteries exhibit greater discharge capacity and stable cycling performance. Li/PIL-GPE@PMSN-5 %/LiFePO 4 batteries show high capacity of 147 mAh g −1 under current density of 0.5 C, and the capacity retention rate is greater than 94 % after 200 cycles. Moreover, Li/electrolyte/NCM811 batteries with LiNi 0.8 Co 0.1 Mn 0.1 O 2 (NCM811) positive electrode also exhibit ideal rate performance and long cycle charge-discharge performance. The prepared PIL-GPE@PMSN exhibits the potential to improve the safety of high-energy density LIBs.
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高影响因子
RARE METALS
·
2024
·Vol. 43
·期 5
·2205-2221
·
IF 9.6
Li Hao,Zhang Rui-Rui,Li Ke-Xin,Wei Shuang,Liu Yu-Mei,Liu Rui-Xia
Selective oxidation of alkanes to produce high-value chemicals is an essential strategy and means to realize efficient utilization of resources. In this work, a strategy of lanthanum manganese mixed metal oxides (LMMO) regulated via a facile ionic liquid (IL)-assisted hydrothermal method was proposed to construct the multifunctional catalysts, which exhibited excellent catalytic performance in the selective aerobic oxidation of cyclohexane. An 8.9% cyclohexane conversion with 90% KA oil (cyclohexanol and cyclohexanone) selectivity was achieved over the optimal LMMO catalyst under mild conditions. The effects of anion type, carbon chain length and concentration of ILs on the structure and properties of catalysts were investigated through various characterizations, indicating the structure-directing and template effect of ILs on the multifunctional catalysts. The formation of self-assembled spherical nanoparticles followed the “dissolution-nucleation-proliferation” mechanism with the introduction of 1-butyl-3-methylimidazolium hydrogen sulfate, ascribing the synergistic effect between the microenvironment of ILs and the hydrothermal environment. Importantly, the high reactive oxygen concentration, redox capacity, and suitable basic sites of LMMO catalysts mediated by ILs enhance the activation of C-H bonds and molecular oxygen, simultaneously influencing the adsorption and desorption of the substrate. A comprehensive understanding of the high KA oil selectivity and radical reaction mechanism was elucidated based on in situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) and radical trapping experiments. The recycling and regeneration experiments further illuminated that the removal of adsorbed cyclohexanone acting on the LMMO catalyst was the key to achieve high KA oil selectivity. Graphical abstract
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高影响因子
Journal of Physical Chemistry Letters
·
2022
·
IF 6.888
Mengyan Cao,Xiujian Zhao,Xiao Gong
In this work, we report large-scale preparation of stable Sb3+ and Bi3+ codoped Cs2ZrCl6 microcrystals for highly efficient white light emission using ionic liquids, demonstrating a broad dual-band white emission covering 400–800 nm. The dual emissions originate from the associated self-trapped excitons of the [SbCl6]3– and [BiCl6]3– octahedra. Moreover, the ratio of the dual-emission peaks can be effectively regulated by tuning the excitation wavelength. Meanwhile, to improve the optical properties and stability, ionic liquids are employed to assist the synthesis process of perovskite materials. The white light emission of one of the samples demonstrates CIE coordinates right in the center of the white light region (0.334, 0.331) and an excellent color rendering index (∼90.3), accompanied by a 66.1% quantum efficiency. Moreover, our method allows the facile synthesis of large batches of microcrystalline powders. Our findings demonstrate the potential of white phosphors as single components for future applications in lighting fields.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2017
·Vol. 52
·期 13
·8027-8040
·
IF 2.599
Ding Shichao,Hu Xiaoling,Guan Ping,Zhang Nan,Li Ji,Gao Xumian,Zhang Xiaoyan,Ding Xiaoqi,Du Chunbao
Recently, the design and preparation of novel functional materials using biomimetic approaches for the high adsorption and precise selective capture of biomolecules have been actively investigated. In this work, molecularly imprinted microspheres (MIMs) with a homogeneous polymer shell anchored onto SiO 2 core particles were successfully synthesized via the surface iniferter-initiated polymerization under room temperature in aqueous media. Herein, a clinically relevant immunostimulating hexapeptide from human casein (IHHC) was chosen as a template. Moreover, a novel double imidazolium dicationic ionic liquid with multiple binding sites was synthesized and used as the cross-linker to improve the recognition performance and enhance the adsorption capacity of MIMs simultaneously. The as-prepared microspheres were characterized through various methods. Results revealed that MIMs not only exhibited excellent selective recognition for IHHC but also possessed a high adsorption capacity through the synergistic effect of directional and non-directional interactions, which demonstrated their potential use in the practical application.
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高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2024
·
IF 3.8
Ke Yuan,Tao Zhang,Li Lv,Yan Wang,Zongpeng Zou,Shengwei Tang
The production of 1,3,5-trioxane (TOX) from formaldehyde (FA) solution is seriously limited by the reaction equilibrium. 1-Propyl-3-methylimidazolium bisulfate ([PMIm]HSO4), 1-(3-sulfonic acid)propyl-3-methylimidazolium bisulfate ([PSMIm]HSO4), and 1,3-bis(3-sulfonic acid)propyl imidazolium bisulfate ([PS2Im]HSO4) were, respectively, used as cocatalysts of H2SO4 to intensify the TOX synthesis from FA solution. The results show that the intensification performance of ILs on the TOX synthesis was according to the following order: [PS2Im]HSO4 > [PSMIm]HSO4 > [PMIm]HSO4. The yield of TOX was increased from 13.84 to 16.95% with the addition of 0.5 mol [PS2Im]HSO4 per kilogram of FA solution. DFT calculation and MD simulation were conducted, and the activity of water was measured to clarify the intensification mechanism. The results illustrated that the water activity had a strong influence on the TOX yield. In the three ILs, [PS2Im]HSO4 has the highest dipole moment and the largest overall charged surface areas. It can form the most stable H-bonds with H2O molecules, resulting in the biggest decrease in the activity of water, thereby showing the best performance to shift the reversible reaction of TOX synthesis to right forward. The result provides a guidance for the development of new catalysts for TOX synthesis.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Yuxin Fu,Xiuchen Wang,Gege Hang,Yanan Wang,Zhe Liu
A dual-conductive fiber has been engineered with a continuous “ion-electron” network. • The fiber achieves both a capacitance density of 633 F cm −3 and a strength of 247 ± 18.5 MPa. • The fiber supercapacitor shows a high energy density of 41.1 mWh cm −3 . • Supercapacitors have successfully powered a wristwatch, demonstrating their practicality. The rapid development of wearable electronics has created an urgent need for flexible energy storage devices that combine high energy density with fast charging and discharging capabilities. However, the poor intrinsic ionic transport properties of PEDOT: PSS severely limit the efficiency of charge storage and release. To address this critical challenge, this study constructed a highly efficient “ion-electron” dual-continuous synergistic transport network within one-dimensional fibers by regulating the doping concentration of the ionic liquid (EMIM: TFSI, IL) via a simple wet-spinning process. An appropriate amount of IL significantly induces PEDOT chain stretching and orientation, effectively shielding the PSS insulating regions, while preserving the long-lasting conductive network formed by single-walled carbon nanotubes (SWCNT) and the mechanical structure of the fibers. Experimental results demonstrated that the optimized PEDOT: PSS/SWCNT/IL-30 composite fiber achieved a synergistic improvement of record-high volumetric capacitance (633 F cm −3 at a current density of 3 A cm −3 ) and outstanding mechanical strength (247 ± 18.5 MPa). The fiber supercapacitor assembled from this composite fiber exhibited an ultrahigh volumetric energy density of 41.1 mWh cm −3 at a power density of 239.2 mW cm −3 . It retained 78.6% of its capacitance after 10,000 cycles at 7 A cm −3 , revealing excellent rate capability and cycling stability. Furthermore, the fibers woven into flexible fabric devices could power an electronic watch for nearly 50 min, demonstrating superior practical power-supply capability. By clearly elucidating the concentration–structure–property relationship, this study provides key insights and experimental evidence for the design of high-performance, weavable energy storage electrodes, which is of great significance for advancing the practical application of flexible wearable energy storage systems. This paper proposes a structural design strategy for synergistically constructing a dual-continuous “ion-electron” transport network. The fabricated PEDOT:PSS/SWCNT/IL-30 composite fiber achieves an ultra-high specific capacitance of 633 F cm −3 . The assembled symmetric fiber supercapacitor delivers a power density of 239.2 mW cm −3 at an energy density of 41.1 mWh cm −3 . Download: Download high-res image (147KB) Download: Download full-size image
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高影响因子
HYDROMETALLURGY
·
2026
·
IF 6.3
Jisheng Li,Yuheng Fan,Jiawei Liu,Huizhang Li,Changyu Sun,Yufeng Hu,Laiyong Zhang,Fayan Zhu,Jilong Han
99.9% extraction, 99.8% boric acid recovery via 3-stage cross-current system. • [C10mim][TfO] reduces ethyl acetate consumption for eco-friendly extraction • DFT reveals H-bonding between the IL anion and boric acid drives extraction. • Excellent phase reusability and stability prove robustness for scalable use. This study develops a green extraction system for boric acid from saline lake brines using isooctanol, ethyl acetate, and the hydrophobic ionic liquid [C10mim][TfO] as co-extractant. Conventional solvent extraction often relies heavily on volatile organic solvents such as ethyl acetate, posing environmental concerns. Under optimized conditions (including [C10mim][TfO]/isooctanol fractions, pH, phase ratios, and cross-current stages), three-stage extraction and two-stage stripping achieved efficiencies of 99.9% each, yielding 99.8% overall boric acid recovery and a capacity of 28.7 g/L (as H₃BO₃). DFT calculations confirmed hydrogen bonding between the [TfO] − anion and boric acid as the key mechanism. Crucially, [C10mim][TfO] partially replaced ethyl acetate, reducing solvent consumption and environmental impact, while recirculation experiments confirmed excellent organic phase reusability and stability, demonstrating significant potential for sustainable industrial application.
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ACS Omega
·
2026
·Vol. 11
·期 29
·43187-43202
·
IF 5.2
Kinkeyi Moukoko Aurchy Dauriant,Yang Lili,Zhang Yueqi,Jiang Guancheng,Dong Tengfei,Huang Sanpeng
The limitation of conventional shale inhibitors to simultaneously
provide effective charge screening and deep intercalation is currently
one of the main challenges in the design of high-performance shale
inhibitors. In this study, we propose a unified design of amino acid
ionic liquids (AAILs) as a suitable solution to this functional deficiency,
by combining an anion capable of strongly binding to clay surfaces
with a charge-neutralization cation. Experimental investigations were
assessed by linear swelling tests, shale recovery tests, immersion
tests, viscosity measurements, particle size distribution tests, scanning
electron microscopy tests, and X-ray diffraction (XRD) analysis. Our
results revealed a correlation between molecular design and performance,
where the anion’s size, functional groups, and charge distribution
were the key parameters to evaluate the inhibiting performance of
AAILs. The superior inhibitor was determined by a small size anion
such as glycinate possessing complementary functional groups, allowing
for deep intercalation and multipoint hydrogen bonding, acting as
a cross-linking agent between the clay layers. The glycine-based AAIL,
[Veim][Gly], demonstrated outstanding performance, achieving a shale
recovery rate of 88.90% after a remarkable reduction in clay swelling
by more than 70%, attributable to the combined synergistic effect.
Such an inhibitory approach was difficult to achieve with traditional
inhibitors or AAILs with bulky structures or positively charged anions.
This study could be used as a reference in designing a fundamental
principle for high-performance and environmentally friendly shale
inhibitors.
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PubMed
高影响因子
CHIRALITY
·
2025
·Vol. 37
·期 7
·e70043
·
IF 3
Min Wei,Yinxin Yang,Ruoxi Huang,Linxu Dong,Haikuan Yuan,Lijuan Zhang,Jie Lu
In this work, a novel pair of chiral ionic liquids (CILs) based on cis- and trans-myrtanol was designed, synthesized, and applied in the enantioselective liquid–liquid extraction (LLE) of DL-3-phenyllactic acid (DL-3-PLA). DL-3-PLA, a naturally occurring broad-spectrum antimicrobial compound, exhibits distinct biological activities in its enantiomeric forms, making its separation of significant interest for pharmaceutical and food applications. The CILs were synthesized starting from (1S)-(−)-β-pinene via oxidative hydroboration, followed by subsequent functional group modifications, and were fully characterized using 1 H NMR, FTIR, DSC, and TGA. Optimization of the LLE parameters (0.10-M CILs in n-octanol, 0.10-M DL-3-PLA in water, pH 6.8, 298.15 K) yielded a single-stage enantiomeric excess ( ee ) of 15.68%. Using five consecutive extractions with the trans-CILs isomer, a cumulative ee of 95.18% was achieved. Quantum mechanical calculations, including electrostatic potential analysis, IGMH isosurface mapping, and binding energy evaluations, revealed that both the cis- and trans-CILs isomers exhibited strong chiral recognition toward D-3-PLA, with the trans-CILs isomer showing superior recognition performance compared to the cis-CILs isomer. These results underscore the potential of the designed CILs as effective chiral selectors for the DL-3-PLA separation and provide a promising strategy for practical applications in enantioselective separations.
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PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 5.1
Xiao-Ya Wang,Wen-Qiang Gong,Fei-Feng Mao,Wei Hui,Xian-Lu Wu,Tiao Zhang,Yan Zhou,Jia-Yin Zhang,Duan-Jian Tao
The high-purity separation of gases with similar properties (e.g., SO 2 vs. CO 2 ) remains a major challenge for ionic liquid (IL) absorbents. In this work, we report the highly efficient and selective capture of SO 2 via SO 2 -triggered reversible solid–liquid phase transition in a series of tunable alkyl quaternary ammonium hydrogen sulfate ionic liquids (AQA-HSO 4 ). The results show that AQA-HSO 4 achieve ultrahigh IAST SO 2 /CO 2 selectivities (up to 855) and high uptake capacity (7.1 mmol g −1 ) at 293.2 K and 100 kPa. This superior performance is rooted in a rationally designed phase transition mechanism, where the modulation of alkyl chain lengths (from ethyl to hexyl) finely tunes the ionic microenvironment by balancing electron-donating and steric effects. Systematic investigations, including SO 2 absorption and kinetic analyses, in-situ FT-IR, DFT and COSMOtherm calculations, reveal that the [HSO 4 ] − anion serves as the primary active site, forming suitable cooperative hydrogen bonding and Coulombic interactions specifically with SO 2 , while remaining inert to CO 2 /N 2 . Kinetic analysis confirms that the spontaneous phase transition of AQA-HSO 4 drastically lowers the mass transfer energy barrier, enabling [N 4444 ][HSO 4 ] to reach 67% of its saturation capacity within 5 min. Additionally, [N 4444 ][HSO 4 ] exhibits outstanding stability and recyclability, with negligible capacity loss (<0.1%) after 20 absorption–desorption cycles, and can be fully regenerated under mild, energy-efficient conditions (depressurization to ∼20 kPa) without external heating. This work provides a promising strategy for developing next-generation, phase-transition-responsive absorbents for high-purity gas separation processes.
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危险品化学品经营许可证（带存储）