INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
·
2019
·Vol. 20
·期 14
·3424
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IF 4.183
Jianguo Li,Hongying Dong,Fan Yang,Liangcheng Sun,Zhigang Zhao,Ruixi Bai,Hao Zhang
In this work, LaPO4:Ce, Tb phosphors were prepared by firing a LaPO4:Ce, Tb precipitate using an ionic-liquid-driven supported liquid membrane system. The entire system consisted of three parts: a mixed rare earth ion supply phase, a phosphate supply phase, and an ionic-liquid-driven supporting liquid membrane phase. This method showed the advantages of a high flux, high efficiency, and more controllable reaction process. The release rate of PO43−from the liquid film under different types of ionic liquid, the ratio of the rare earth ions in the precursor mixture, and the structure, morphology, and photoluminescence properties of LaPO4:Ce, Tb were investigated by inductively coupled plasma-atomic emission spectroscopy, X-ray diffraction, Raman spectra, scanning electron microscopy, and photoluminescence emission spectra methods. The results showed that a pure phase of lanthanum orthophosphate with a monoclinic structure can be formed. Due to differences in the anions in the rare earth supply phase, the prepared phosphors showed micro-spherical (when using rare earth sulfate as the raw material) and nanoscale stone-shape (when using rare earth nitrate as the raw material) morphologies. Moreover, the phosphors prepared by this method had good luminescent properties, reaching a maximum emission intensity under 277 nm excitation with a predominant green emission at 543 nm which corresponded to the5D4-7F5transition of Tb3+.
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高影响因子
FOOD CHEMISTRY
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2026
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IF 10.4
Lirong Nie,Rongwei Sun,Xiang He,Ziyin Tang,Jun Tong,Zhi Zhu
A novel functionalized ATPS-HPLC method was developed for sensitive detection of QNs. • MIL-ATPS achieved over 95% extraction with high recyclability for five cycles. • The developed method was validated by real honey samples. • DFT calculations reveal stable MIL-QNs complexes with similar binding affinities. A novel aqueous two-phase system based on diimidazolium magnetic ionic liquids (MIL-ATPS) was developed for the extraction and determination of trace quinolones (QNs) in honey. The MIL-ATPS achieved extraction efficiencies over 95% and partition coefficients exceeding 200 under optimal conditions, while maintaining good recyclability over at least five cycles without efficiency loss. The method showed satisfactory sensitivity, with limits of detection (LODs) and quantification (LOQs) of 2.853–3.772 μg/L and 8.647–11.43 μg/L, respectively. Satisfactory analytical results were obtained in honey samples, with spiked recovery rates of 97–104% and a relative standard deviation (RSD) below 3%. The intra-day and inter-day precisions ranged from 0.40% to 2.83% and 0.09% to 3.16%, respectively. Density functional theory (DFT) calculations revealed that the MIL could form stable host-guest complexes with the three QNs, providing molecular-level support for the favorable extraction behavior. Our finding provides a rapid, solvent-free, magnetic approach for sensitive antibiotic detection in food. Download: Download high-res image (103KB) Download: Download full-size image
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CHEMICAL PAPERS
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2026
·
IF 2.7
Cen Lixiu,Yang Zhen,Dong Xian,Liang Longchao,Chen Zhuo
An imidazolium-based poly(ionic liquid), [VIm-4VBC][Cl]-EGDMA, was prepared by radical copolymerisation of a divinyl imidazolium ionic-liquid monomer, 1-(4-vinylbenzyl)-3-vinylimidazolium chloride ([VIm-4VBC][Cl]), with ethylene glycol dimethacrylate (EGDMA), and applied to the removal of the anionic azo dye Acid Black 10B from aqueous solution. The material was characterised by 1 H NMR, FT‒IR, SEM‒EDS, XPS, and TG‒DSC. It maintained a removal efficiency of 99.4% over the pH range 3‒9 and showed a maximum adsorption capacity of 1063.4 mg g −1 . The adsorption data were well described by the Langmuir isotherm and pseudo-second-order kinetic models. Combined XPS, FT‒IR, and SEM‒EDS analyses before and after adsorption indicated that the adsorption was driven primarily by electrostatic attraction between the cationic imidazolium framework and the dye sulfonate groups, partially proceeding via anion exchange with framework Cl − , with hydrogen bonding and π‒π stacking making secondary contributions. The adsorbent retained more than 80% of its capacity in the presence of 0.10 mol L −1 NaCl or Na 2 SO 4 . After five adsorption–desorption cycles using 0.10 mol L −1 NaOH as the desorbent, the adsorption capacity decreased from 503.8 to 428.3 mg g −1 (capacity retention of 85%), indicating good reusability.
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高影响因子
MOLECULES
·
2026
·Vol. 31
·期 20
·3668
·
IF 5.1
Penggang Zhang,Mingji Huang,Yufa Deng,Hongzhou Chao,Donglei Yang,Hancheng Li,Chi Yi,Junkai Zhu
To address the critical problems of wax crystallization and deposition, high viscosity and friction, and pipeline gelling risk during the pipeline transportation of high-wax crude oil, a PAO/IL/JN-3 ternary composite drag reducer was constructed via physical blending, using poly(α-olefin) (PAO) as the drag-reducing main agent, JN-3 as the pour point depressant component, and ionic liquid as the functional regulator, and its application performance was systematically evaluated. Proportion optimization showed that the optimal mass ratio of PAO to JN-3 was 1:2, IL-C14 provided the best enhancement, and the optimal mass fraction of IL was 30 wt%. Rheological tests showed that at a concentration of 40 mg/kg, the storage modulus G′ was approximately 82% lower and the loss modulus G″ was approximately 78% lower than those of the PAO-only system. Wax deposition evaluation showed that for the model oil containing 30 wt% paraffin, the reduction rate of the wax deposition amount reached 38% at 40 mg/kg. In the flow loop tests, a drag reduction rate of 50.5% was achieved at 40 mg/kg, and in the field pipeline test, the pressure drop decreased from 2.15 MPa to 1.15 MPa, corresponding to an average drag reduction rate of 46.5%. Overall, the ionic liquid reconciles the functional conflict between the drag-reducing and pour-point-depressing components, and the PAO/IL/JN-3 ternary composite drag reducer integrates drag reduction with pour-point-depressing functionality inferred from rheological, wax deposition, and crystal morphology evidence, providing a theoretical basis for the pipeline transportation of high-wax crude oil.
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TRIBOLOGY INTERNATIONAL
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2026
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IF 7.6
Jingwen Guan,Ying Gao,Luyao Gao,Rui Dong,Ping Wen,Weiwei Qi,Mingjin Fan
Achieving high performance and multi-functional synergy at low concentration has always been an urgent pursuit for lubricating additives, which is closely related to its structural regulation and composition optimization. In this work, two kinds of protic ILs (P 6 N 12 and P 6 N 12 O) were synthesized with different molecular structures concerning the presence of carbonyl (-C O) structure. Structurally, the introduction of -C O structure obviously enhances the compatibility and stability with water-based basic system. Not limited the enhanced corrosion resistance, ILs can effectively improve surface wettability and adsorption, resulting from the formation of the protective film on the metal surface. Furthermore, the improvement of friction-reducing (more than 70%) and anti-wear (over 90%) performance is worth noting at the steel/steel tribo-pairs even at the contact stress of 2.72 GPa, which is ascribed to the self-assembly behavior and strong interaction of IL molecule on the sliding asperity. XPS analysis and DFT calculations show that carbonyl group in P 6 N 12 O enhances the electron delocalization and charge transfer at the interface, which promotes the in-situ formation of tribofilm composed of iron oxide and phosphate, resulting in the enhanced stronger adsorption and high-bearing characteristics. The antibacterial rate of two ILs against Staphylococcus aureus reached 99.9%, but the activity of P 6 N 12 O against Escherichia coli was weak, which was due to the conformational change charge distribution and electrostatic attraction with bacterial surface that caused by carbonyl group. The obtained structure-activity relationship in this work provides the theoretical guidance and experimental data reference for the enrichment and development of water-based lubricants.
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高影响因子
Journal of Energy Chemistry
·
2026
·
IF 15.6
Xinyu Wang,Jiaxue Li,Jia Song,Min Deng,Lu Yao,Lin Yang,Wenju Jiang,Junfeng Zheng,Zhongde Dai
Carbon molecular sieve (CMS) membranes have attracted increasing attention for gas separation owing to their superior thermal and chemical stability; however, the intrinsic permeability–selectivity trade-off, mainly caused by insufficient control of ultramicropore evolution during carbonization, remains a critical challenge. In this work, a synergistic ultramicropore engineering strategy is developed by incorporating imidazolium-based ionic liquids (ILs) into γ-cyclodextrin (γ-CD) modified polyimide (PI) precursors to precisely regulate carbon microstructure formation. The rigid γ-CD units function as cavity-size-directing porogens to induce hierarchical microporous structures, while ILs act as structure-directing additives that modify the local free-volume environment and regulate carbon framework rearrangement during pyrolysis, enabling precise modulation of ultramicropore size and evolution. As a result, the CMS membranes exhibit exceptionally high gas permeability combined with markedly enhanced diffusion selectivity. The optimized membranes achieve CO 2 and H 2 permeabilities exceeding 2.1×10 4 and 2.4×10 4 Barrer, respectively, together with CO 2 /CH 4 and H 2 /CH 4 selectivities of 55.1 and 71.3, surpassing the Robeson upper bounds for multiple gas pairs. Structural characterization and gas transport analysis demonstrate that the superior separation performance originates from IL-mediated regulation of ultramicropore size distribution and pore connectivity. This work highlights the multifunctional role of ionic liquids in directing pore evolution and provides a versatile, molecular-level design strategy for next-generation high-performance CMS membranes. A γ-CD and IL regulated PI precursor enables an ultrapermeable CMS membrane with controlled ultramicropore evolution for efficient gas separation. Download: Download high-res image (120KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
·
IF 9.1
Yingzhen Wu,Enshen Shi,Haojie Song,Lu Li,Chungang Xie,Yongjiang Yu,Yanan Liu,Zhongyi Jiang
Nanofiltration membranes possess great potential in ion separation, meanwhile, the pore and surface properties determining membrane permeance and selectivity, should be designed and regulated. Herein, we utilized reactive ionic liquid (1-aminoethyl-3-methylimidazolium tetrafluoroborate, AMIM-BF 4 ) simultaneously as aqueous phase additive and surface modifier to regulate pore and surface properties for fast and efficient Li + /Mg 2+ separation. AMIM-BF 4 was added in aqueous phase to undergo a competitive interfacial polymerization with polyethyleneimine (PEI), effectively increasing the average pore size of the membrane. Then, amino group in AMIM-BF 4 could react with the unreacted acyl chloride groups to modify membrane surface, increasing its positive charge and hydrophilicity. Accordingly, the membrane possessed high water permeance of 33.3 L m −2 h −1 bar −1 with MgCl 2 rejection rate of 98.9%, and separation factor of 22.7 for the mixed solution with magnesium-to‑lithium ratio (MLR) of 50:1. Meanwhile, during the 168-h continuous cross-flow test, the rejection rate for MgCl 2 remained above 98.1% with stable water permeance. Moreover, through the three-stage nanofiltration experiment, the membrane could reduce the MLR of simulated salt lake brine with 2000 ppm from 50:1 to only 0.02:1, demonstrating its potential for efficient lithium enrichment from complex brine.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2026
·
IF 3.1
Xiaolin Qiu,Xiaojing Chen,Ziqian Ding,Lingli Gu
To overcome the intrinsic limitations of polymer-based phase change gels, including low thermal conductivity, supercooling, and insufficient mechanical robustness, self-healing hydrogel-based form-stable phase change materials (FPCMs) were designed by in situ polymerization of graphene oxide (GO)- or aluminum oxide (Al 2 O 3 )-enhanced 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim][BF 4 ]) nanofluids within a dynamic poly(N-isopropylacrylamide-co-UPyMA) network. The incorporation of quadruple hydrogen-bonding UPy motifs endowed the polymer network with intrinsic self-healing capability and mechanical adaptability. Uniformly dispersed GO and Al 2 O 3 nanofillers significantly enhanced heat transport and crystallization behavior. At optimized loadings, the nanofluids exhibited markedly suppressed supercooling, and the phase transition temperature of the FPCMs could be effectively tuned by adjusting ionic liquid content, with melting point shifts exceeding 5°C. GO-based FPCMs completely eliminated supercooling, while Al 2 O 3 -based systems achieved an over 85% reduction. High latent heat values above 230 J/g were retained, together with thermal conductivity enhancements exceeding 140% compared to the neat ionic liquid. Benefiting from the dynamic polymer network, the FPCMs showed excellent self-healing performance, with strength recovery exceeding 80% and good durability upon repeated damage–healing cycles. This work highlights a polymer network engineering strategy for constructing multifunctional FPCMs with tunable thermal behavior, efficient crystallization regulation, and mechanical resilience for thermal energy storage applications.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2026
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IF 9.6
Bing Tian,Lifei Liu,Weizhen Zhao,Zhengkun Zhang,Guidong Li,Ting Song
The photoresist composed of small molecules was developed. • The photoresist was directly patterned in a one-step process via in situ reactions. • The ionic liquid improves interfacial compatibility between PR and silicon wafer. • Photoresists based on the thiol-ene reaction exhibited preferable sensitivity. • The photoresist was utilized in quantum dot lithography and 3D printing. To circumvent the complex synthesis procedures associated with conventional polymeric photoresists (PRs), we developed an in situ polymerization and crosslinking strategy for small molecules based on thiol-ene free-radical photopolymerization. Ionic liquid (IL), commonly used to modulate interfacial interactions and polymerization reactions, was therefore introduced as one of the monomers to improve the patterning performance. The film-forming ability was improved by the addition of the hydrophilic IL 1-vinyl-3-butylimidazolium bromide (VBIMBr) without the use of toxic hexamethyldisilazane (HMDS) vapor. The lithographic performance with varying IL content was studied, achieving line resolutions of 0.8 μm for deep ultraviolet (DUV) lithography and 100 nm for electron beam lithography (EBL), respectively. Furthermore, the effects of IL on the lithographic kinetics and mechanism were systematically investigated. The homogeneous network induced by thiol-ene photopolymerization enables a uniform distribution of quantum dots (QDs) through effective immobilization, highlighting its potential for QD lithography. It was found that the PR enables the fabrication of multicolor luminescent patterns over a wide scale range (from the micrometer to the millimeter scale) on diverse substrates, with an impressive resolution of 1 μm, demonstrating its potential for applications in additive manufacturing. Additionally, the PR is also applicable to 3D printing owing to its unique formation process. Download: Download high-res image (347KB) Download: Download full-size image
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PubMed
高影响因子
Chemical Engineering Journal Advances
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2026
·
IF 6.9
Long Liu,Jie Zou,Zihao Zhou,Yuxuan Yang,Xueqiang Shao,Yangyang Bian,Mingwen Zhang,Jinbei Yang
In this study, functionalized ionic liquids were precisely anchored onto the pores and surfaces of the high-specific-surface-area MIL-101(Fe) metal-organic framework (MOF) carrier through covalent bonding, achieving the ordered arrangement of active sites and the modulation of the local microenvironment. Specifically, carboxyl-functionalized imidazolium ionic liquids bridge Fe³⁺ ions and terephthalic acid ligands to construct the supported acidic ionic liquid MIL-101(Fe)-[(CH₂COOH)₂IM][HSO₄] via solvothermal co-assembly. The obtained catalyst efficiently facilitates the esterification of various free fatty acids with methanol for biodiesel production. The catalyst was characterized by XRD, FT-IR, XPS, SEM, BET-BJH, and TGA. The catalyst demonstrated high acidity (6.31 mmol/g), excellent thermal stability, and efficient catalytic performance. Under the operating conditions optimized by response surface methodology (catalyst dosage of 8.64%, methanol-to-oleic acid molar ratio of 16.9:1, reaction temperature of 67.0 °C, and reaction time of 4.0 h), the oleic acid conversion over MIL-101(Fe)-[(CH₂COOH)₂IM][HSO₄] reached 97.66%, and it still maintained favorable catalytic performance after 7 cycles. In addition, MIL-101(Fe)-[(CH₂COOH)₂IM][HSO₄] also exhibited broad substrate applicability, and could serve as a promising catalyst for biodiesel preparation.
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高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Yaxin Cai,Xiaoyan Chen,Fuying Zhang,Ting Qiu,Qinglian Wang,Jie Chen
Ethyl methyl carbonate (EMC) is mainly prepared via the transesterification between ethanol (EtOH) and dimethyl carbonate (DMC) using alkaline catalysts. However, reported catalysts exhibit deactivation, environmental pollution, and low efficiency. Herein, we prepared a heterogeneous catalyst based on phenolate anion ([PhO] − )-functionalized poly(ionic liquid)s (PILs). Catalytic performance improved via rational PIL framework design with quaternary ammonium cations, which co-tuned polymer swelling and [PhO] − electronegativity. Among the series, [N 3 PIL][PhO], the most active catalyst, featuring high swelling degree and strong [PhO] − electronegativity, was validated by experiments and DFT calculations. Under optimized conditions (DMC/EtOH molar ratio = 3, catalyst dosage = 5 wt%, reaction time = 5 h, temperature = 100°C), EMC yield and selectivity reached 53.57% and 95.75%, respectively. This work offers a viable strategy to overcome conventional catalyst drawbacks and new insights for efficient heterogeneous EMC synthesis catalyst design.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Yiting Han,Yueyang Xu,Liming Kong,Guojun Shi,Yongping Zeng
Metal-organic frameworks (MOFs) have garnered significant attention in adsorption desulfurization due to their high density of adsorption sites and permanent porosity. However, despite the abundant adsorption sites in Zr-based MOF-808, its relatively large pore channels and volumes may limit the adsorption efficiency for smaller molecules such as thiophene. Incorporating room-temperature ionic liquids (rILs) into MOF structures offers a promising strategy to address a key limitation of rILs-their high viscosity at ambient conditions, which often restricts mass transfer rates during liquid-liquid extraction. In this study, an IL-modified MOF-808 was synthesized to assess its performance in desulfurization. Characterization results confirmed that the rILs successfully infiltrated the MOF-808 pores without changing its framework integrity. Adsorption properties for thiophene in ILs/MOF-808 composites were investigated through Grand Canonical Monte Carlo (GCMC) simulations alongside experimental adsorption measurements conducted at 298 K. Further Monte Carlo (MC) simulations demonstrated that the presence of ILs enhanced the affinity for thiophene and increased the number of accessible adsorption sites within the composite. The adsorption capacity of ILs/MOF-808–20 remained stable over four adsorption-regeneration cycles using n-octane as the solvent, providing a potentially feasible solution for deep desulfurization.
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高影响因子
危险品化学品经营许可证（带存储）