APPLIED SURFACE SCIENCE
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2026
·
IF 6.6
Li Hao,Tiantian Wang,Tingyu Li,Yiping Sun,Sergey Chizhik,Shujuan Liu,Xuqing Liu,Qian Ye
The formulation and improvement of high-efficiency lubricant additives on the basis of novel two-dimensional MXene materials have drawn increasing attention in recent years. Herein, we report the synthesis of N, P doped Ti 3 C 2 T x MXene using ammonium hypophosphite as the N/P source, followed by surface modification with catechol-containing ionic liquid to obtain ionic liquid-functionalized MXene. Tribological tests reveal that ILs@N, P‑MXene markedly improve the tribological properties of 500SN with 0.75 wt% addition. Compared with the lubricant 500SN, the mean COF is reduced to 0.107, the wear volume decreases by 65.8%, and their load-carrying ability is improved to 650 N from 150 N. XPS analysis indicates that ILs@N, P-MXene undergoes tribochemical reactions with the steel substrates during sliding, forming a continuous and stable protective tribofilm comprising carbonitrides, iron oxides, titanium oxides and iron phosphates. This in-situ formed tribofilm successfully inhibits direct asperity contact between the mating surfaces, thereby endowing the lubricant system with good load-carrying capacity and improved tribological performance.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Yu Zhang,Yuting Jiang,Yunsheng Xu,Pengwu Xu,Wenjun Peng,Weijun Yang,Shuangfei Xiang,Xianming Zhang
Soft iontronic materials are highly desirable for flexible electronics that operate under deformation and temperature fluctuations, yet practical platforms that combine solid state ionic transport, mechanical robustness, and reprocessability while integrating multiple responsive functions remain limited. Here, a series of X-PEG networks is constructed by integrating acylurea based dynamic covalent linkages, semicrystalline poly(ethylene glycol) segments, and a homogeneously dispersed imidazolium ionic liquid phase. This architecture couples dynamic exchange, associative reinforcement, and reversible crystallinity within one matrix, enabling microstructure governed regulation of mechanics and ion transport. A broad mechanical window is achieved across compositions, with high stretchability and useful strength retained at representative formulations, while ionic conduction is maintained in the 10 −3 to 10 −2 mS·cm −1 range. Robust electromechanical coupling is demonstrated by smooth and repeatable resistance outputs under bending and subtle physiological motions, together with stable cycling performance. Rapid thermal following and heat triggered shape regulation are enabled through PEG crystallization and melting coordinated with relaxation of hydrogen bonded hard domains. Notably, heating produces a resistance decrease that supports temperature triggered circuit warning, consistent with thermally driven microphase reconstruction, primarily through the melting of crystalline domains, which improves the effective connectivity of ion-conducting pathways. The networks are melt-reprocessable, and ionic conductivity as well as strain and temperature responsive sensing outputs are largely preserved after repeated hot pressing cycles. This work establishes a recyclable ionic network platform in which dynamic bonding and semicrystalline switching jointly program microstructure and function, offering a practical materials strategy for sustainable soft iontronic devices.
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高影响因子
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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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Jiang Chang,Bowen Li,Guoxiong Zhan,Yinge Bai,Lu Bai,Xiangping Zhang,Shaojuan Zeng
Novel TIL@SBA-15 composites with ultra-micropores and active sites are fabricated. • Optimized composites achieve high CO 2 uptake and exceptional CO 2 /N 2 selectivity. • The composites maintain high CO 2 uptake under humid gas conditions. • Over 95% of initial CO 2 capacity is retained after 15 adsorption-desorption cycles. • Superior per0066ormance stems from synergy of chemical and physical adsorption. To address the critical challenge of capturing low-concentration CO 2 from real industrial flue gas, this study developed triazole ionic liquid (TIL)@SBA-15 composites featuring a novel ultra-microporous structure (<0.70 nm) by immobilizing choline triazolide ([Cho][Triz]) and 1-ethyl-3-methylimidazolium triazolide ([Emim][Triz]) into the mesoporous molecular sieve SBA-15. The obtained composites exhibited excellent CO 2 separation performance and cyclic stability under both dry and humid gas conditions. At 298 K, the 70 wt% [Cho][Triz]@SBA-15 and 70 wt% [Emim][Triz]@SBA-15 achieved CO 2 adsorption capacities of 54.4 and 65.4 mg CO 2 /g adsorbent in a humid gas (10% CO 2 and 1% H 2 O balanced with N 2 ), close to their dry-condition capacities (60.3 and 67.0 mg CO 2 /g adsorbent, 10% CO 2 balanced with N 2 ). Moreover, over 95% of the initial adsorption capacity was retained after 15 consecutive adsorption–desorption cycles whether under dry or humid gas conditions. This superior performance originated from the synergistic effect of chemical adsorption by N-electronegative sites and physical adsorption by the novel ultra-microporous structures from the spatially confined and uniformly dispersed TILs within the SBA-15. This work provides a promising design strategy for TIL-based adsorbents that combine high CO 2 capture efficiency with robust stability, thereby advancing efficient recovery of low-concentration CO 2 from industrial flue gas. Download: Download high-res image (207KB) Download: Download full-size image
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DIAMOND AND RELATED MATERIALS
·
2026
·
IF 5.2
Xu Zhang,Qiushi Li,Fan Yang,Xiaomeng Chu,Shaojie Liu,Xin Liu,Xuteng Xing,Erjun Tang
Non-covalent modification of Ti 3 C 2 T x MXene by an imidazole ionic liquid was successfully achieved. • The dispersion and oxidation resistance of Ti 3 C 2 T x MXene were significantly enhanced. • The composite coating exhibits superior anti-corrosion performance. • The composite coating demonstrates excellent passive barrier protection and active self-healing capability. Ti 3 C 2 T x MXene is most commonly used as an anti-corrosion filler in coatings to enhance their physical barrier properties. However, the poor dispersibility and susceptibility to oxidation have limited its practical application. To address these issues, an imidazole-based ionic liquid (imidazole IL) was selected to functionally modify the surface of Ti 3 C 2 T x MXene (Ti 3 C 2 T x MXene@IL composite) through stable non-covalent interactions, and these interactions were characterized by performing density functional theory (DFT) calculations. The obtained Ti 3 C 2 T x MXene@IL composite cannot enhance the oxidation resistance, but also improve the dispersibility in epoxy resins. Moreover, a composite coating incorporating with Ti 3 C 2 T x MXene@IL showed significantly enhanced the anti-corrosion performance and service lifetime of coatings. Electrochemical impedance spectrocopy showed that the composite coating incorporating Ti 3 C 2 T x MXene@IL exhibited excellent anticorrosion performance and self-healing-like protection at damaged sites, and its impedance remained above 10 10 Ω·cm 2 throughout a 110 d immersion test, three orders of magnitude higher than that of the pure epoxy coating. This excellent long-term anti-corrosion performance can be attributed to a synergistic effect between the physical shielding property of Ti 3 C 2 T x MXene and the corrosion-inhibiting effect of imidazole IL corrosion inhibitors. Download: Download high-res image (240KB) Download: Download full-size image
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高影响因子
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
·
2026
·
IF 8.2
Zeqi Zhang,Xiaoying Xu,Xue Bi,Wenchao Zhang,Rongjie Yang
In order to simultaneously enhance the flame retardancy and mechanical performance of vinyl ester resin (VER) and its carbon fiber composites (VER/CF), while maintaining the room temperature curing characteristics of VER, a nitrogen-containing phosphonium ionic liquid, P4447N[BMP], was synthetized through an ion-exchange process. P4447N[BMP] demonstrated excellent solubility in VER and did not interfere with its room temperature curing process. With the incorporation of 15 wt% P4447N[BMP], the limiting oxygen index (LOI) of the modified resin (P4447N[BMP]15/VER) and its carbon fiber composite (P4447N[BMP]15/VER/CF) increased to 27.7% and 36.4%, respectively. In addition, P4447N[BMP]15/VER and P4447N[BMP]15/VER/CF exhibited lower heat and smoke release during combustion than the unmodified systems. Mechanistic investigations indicated that the flame-retardant efficacy of P4447N[BMP] originated from its synergistic action in both the gaseous and condensed phases. Benefiting from the ionic bonds in P4447N[BMP] and its reactivity with both the resin matrix and the sizing agent on the carbon fiber surface, the incorporation of P4447N[BMP] markedly enhanced the mechanical properties of the cured resin and its carbon fiber composites. Specifically, the flexural moduli of P4447N[BMP]15/VER and P4447N[BMP]15/VER/CF exhibited increases of 22.2% and 41.0%, respectively. Moreover, P4447N[BMP] contributed to an increase of the glass transition temperature of both the cured resin and the corresponding carbon fiber composites. This work presents a viable route to engineer flame-resistant VER systems and corresponding carbon-fiber composites for advanced industrial applications.
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高影响因子
POLYMER COMPOSITES
·
2026
·
IF 4.9
Jishuo Ye,Xunchi Fang,Yu Liu,Zhiji Liu,Jian Wu
Polyamide 56 (PA56) is a competitive bio-based polymer but its insufficient mechanical properties restrict its use in advanced applications. Graphene oxide (GO), normally via surface modification toward higher interfacial interaction, is an ideal reinforcing filler for polymers. Herein, an amino-terminated ionic liquid (AIL) is grafted to carboxyl functionalized GO (CGO) with aims to form multi-bonding networks with PA56, including covalent bonding, hydrogen bonding, and electrostatic interaction. The resulting CGO-AIL contains abundant IL at the edge and basal plane of GO, as well as residual carboxyl groups. By filling only 0.2 wt% CGO-AIL to PA56 fiber, the crystallinity of the composite fiber increases from 24.9% to 31.6%. The tensile strength of 0.2% CGO-AIL/PA56 fiber reaches 1555 MPa, which is 3.3 times higher than neat PA56 fiber. For comparison, 0.2 wt% GO and 0.2 wt% CGO only increase the tensile strength to 1211 and 1247 MPa, respectively. This suggests that carboxyl modification brings very limited enhancement for GO/PA56, while IL modification is able to form stronger interfacial interactions for the multi-bonding synergy. This work provides an efficient strategy for the interfacial engineering toward high-strength GO/polymer composites. Highlights Amino-terminated ionic liquid (AIL) is grafted to carboxyl functionalized GO (CGO). The resulting CGO-AIL is filled to PA56 fiber via in situ polymerization. 0.2 wt% CGO-AIL increases the crystallinity of PA56 fiber from 24.9% to 31.6%. Ultra-high tensile strength of 1555 MPa is achieved on 0.2% CGO-AIL/PA56 fiber. The enhancement is for stronger interfacial interaction via multi-bonding synergy.
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高影响因子
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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PubMed
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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PubMed
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2015
·Vol. 17
·期 38
·25525-25535
·
IF 4.493
Yuanyuan Zhou,Hui Tang,Peiyi Wu
Thermo-dynamic volume phase transition mechanisms of poly[oligo(ethylene glycol)methacrylate] (POEGMA) based microgels with poly(ionic liquid) (PIL) cross-linking moieties are investigated in detail on the basis of temperature-dependent Fourier transform infrared (FTIR) spectroscopy. The original FTIR data are further analysed by two-dimensional correlation spectroscopy (2Dcos) with the perturbation correlation moving window (PCMW) technique. It is observed that the content of hydrophilic PIL cross-linking structure strongly affects the temperature induced volume phase transition mechanism of microgels in which the less cross-linked microgel exhibits a sharp volume phase transition process while the highly cross-linked microgel presents a broad transition behavior. Peculiarly, the dehydration of C–H groups acts as the driving force for the whole phase transition process within the less cross-linked microgel network and cooperative response of chemical groups is identified. It is deduced that the hydrophilic PIL moieties develop polymer–water–polymer interactions with CO groups as CO⋯D2O–PIL hydrogen bonds emerge in the less cross-linked system. As regards the highly cross-linked microgel system, the phase transition process is driven by the disruption of hydrogen bonds between CO groups and water molecules while the response of C–H groups becomes insensitive. PIL moieties passively dehydrate following the dehydration of C–H groups on oligo(ethylene glycol) side chains and no hydrogen bond between CO group and IL–D2O association appears during the phase transition process.
研究领域:
高分子科学
·
软物质物理
·
生物材料
·
药物递送
·
智能响应材料
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高影响因子
危险品化学品经营许可证（带存储）