MICROPOROUS AND MESOPOROUS MATERIALS
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2013
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IF 3.365
Jing Cuan,Bing Yan
In our work, we achieve the multi-component assembly of novel kinds of photofunctional hybrid materials with polyoxometalates (POMs, Na 9 EuW 10 O 36 ·32H 2 O (EuW 10 O 36 9 - denoted as EuW10)) and benzoate (4-aminobenzoate, 4-hydroxybenzoate, 4-mercaptobenzoate) modified mesoporous silica through imidazolium ionic liquid (IL, 1-methyl-3-(trimethoxysilylpropyl) compound as double functional linkage. Using Pluronic P123 surfactant as a template, benzoate functionalized SBA-15 mesoporous host is synthesized as result of the co-condensation of tetraethoxysilane (TEOS) and benzoate modified siloxane as precursor. We fabricate POM into the framework of functionalized SBA-15 mesoporous silica with IL. Here IL behaves as double linkage, which both interact with PMO with electrostatic force through ion exchange and form covalent bond to the functionalized SBA-15 mesoporous silica through its alkoxy group after cohydroxylysis and copolycondensation process. Tb 3+ is further introduced into the above hybrid system through coordination bond to carboxylate group of benzoate unit, which can be expected to modify luminescence color and to obtain close white luminescence. The physical characterizations prove these hybrid materials possess high surface area, uniform mesoporous structure, good crystallization and relatively excellent luminescence properties.
研究领域:
无机化学
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材料化学
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纳米功能材料
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光物理学
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配位化学
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溶胶-凝胶科学
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稀土发光材料
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2015
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IF 4.321
Lu Qi,Xianghai Meng,Rui Zhang,Haiyan Liu,Chunming Xu,Zhichang Liu,Peter A.A. Klusener
Droplet size distribution (DSD) and mean droplet size of chloroaluminate ionic liquid (IL)–heptane dispersion in a stirred vessel were investigated as a model system for the composite ionic liquid/hydrocarbon system applied in the commercial isobutane alkylation process. Focused beam reflectance measurement was used to identify the phase inversion, and particle video microscope (PVM) was employed to measure the DSD of IL-continuous dispersions. The effects of agitation speed and dispersed phase holdup on the DSD and mean droplet size were investigated. Phase inversion was found at a heptane hold-up of just above 0.5. The observed DSDs could be described well by logarithmic normal distributions in spite of variable operating conditions. The DSDs appeared to be more or less independent of the dispersed phase holdup ( ϕ heptane ⩾ 0.3) at the same agitation speed. A semi-empirical correlation based on Shinnar theory was proposed to predict the droplet mean size in the impeller region for the IL-continuous dispersion, and the predicted value agreed well with the experimental data. This work will be a good basis to predict the dispersion behavior under process conditions.
研究领域:
化学工程
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流体力学
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多相系统
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过程工程
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胶体与界面科学
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DOI
高影响因子
RSC Advances
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2015
·Vol. 5
·期 27
·20741-20746
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IF 3.84
Ge Sheng,Guiyun Xu,Shenghao Xu,Shiying Wang,Xiliang Luo
A conducting polymer based composite material of poly(3,4-ethylenedioxythiophene) (PEDOT) doped with pure insoluble ionic liquid (IL), 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, was prepared through a cost-effective electrodeposition method. A very tiny amount of insoluble IL (less than 15 μL), containing 0.1 M conducting polymer monomer, was drop-coated on an electrode surface and then used for electropolymerization using a homemade electrochemical cell filled with aqueous supporting electrolyte. With this design, the consumption of expensive IL for the preparation of the PEDOT/IL composite was greatly reduced, and thus effectively reduced the cost. The prepared PEDOT/IL composite was found to be highly conductive and stable, and it exhibited a highly nanoporous microstructure and excellent electrocatalytic activity toward the oxidation of dopamine (DA). Based on the excellent stability and electrocatalytic activity of the PEDOT/IL nanocomposite, a highly stable, sensitive and selective DA sensor with a detection limit of about 51 nM was developed.
研究领域:
分析化学
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生物传感器
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纳米材料
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电化学
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神经化学
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转化医学
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DOI
高影响因子
Chemical Engineering Journal Advances
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2026
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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
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2026
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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
Journal of Energy Chemistry
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2026
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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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产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2026
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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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产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2026
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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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产品关联
DOI
高影响因子
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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产品关联
DOI
PubMed
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
·
IF 3.5
Weili Jiang,Haochen Xu,Zhongrong Wang,Feilong Pi,Guanglin Zhou,Hongjun Zhou,Chunming Xu
IL modified activated carbon adsorbents were prepared for trace NH 3 removal from H 2 . • 20%[Bmim]BF 4 /AC showed the best NH 3 adsorption. • The purified H 2 meets fuel cell standard with NH 3 below 0.1 μmol·mol –1 . • Anions adsorb electrostatically and cations synergistically capture NH 3 via H-bonds. • Small BF 4 – disperses fully in pores and outperforms larger anions in adsorption. Ammonia residue in hydrogen fuel significantly affects the durability of proton exchange membranes in fuel cells. To address the challenge of removing trace ammonia from hydrogen produced by ammonia decomposition, a series of activated carbon (AC)-based adsorbents modified with ionic liquids (ILs) were prepared. Based on the evaluation under a 200 mg·m –3 NH 3 /H 2 atmosphere, the 20%[Bmim]BF 4 /AC exhibited the best ammonia adsorption capacity. The ammonia concentration in purified H 2 can be reduced to below 0.1 μmol·mol –1 (0.0695 mg·m –3 ), which meets the fuel cell application standards. N 2 adsorption–desorption, scanning electron microscope and energy dispersive spectroscopy confirm that the ILs dispersed uniformly on AC, though they significantly reduced the specific surface area and pore volume of the support. Fourier transform infrared spectroscopy analysis combined with molecular simulations further clarified the adsorption mechanism, highlighting that the anions of ILs provide negatively charged regions for electrostatic adsorption of NH 3 , while the hydrogen atoms on the imidazole ring of cations form hydrogen bonds with NH 3 , synergistically enhancing ammonia adsorption. The theoretical NH 3 affinity order of pure ILs conflicts with experimental adsorption capacities, which is explained by anion size: small BF 4 – achieves full pore dispersion and high active site utilization, whereas larger anions block pore openings. Pore blockage ratio analysis confirms that well-distributed IL within pores dominates adsorption performance. Download: Download high-res image (109KB) Download: Download full-size image
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2026
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IF 12.5
Guoliang Yang,Haohang Yuan,Yang Tong,Xiaohan Dou,Shouwei Zhang,Shujuan Liu,Qian Ye,Weimin Liu
An ionic liquid-functionalized liquid metal based polyurethane/hydrogel composite coating was successfully prepared. • The hydrogels displayed excellent antifouling activity, with antibacterial rates of 95% and anti-algal inhibition of 98%. • The hydrogels demonstrated excellent mechanical properties and self-healing capability, reaching 96.9% healing efficiency. Marine biofouling incurs substantial economic losses. Among various strategies, hydrogels are regarded as effective antifouling materials due to their high hydrophilicity and low adhesion. However, their swelling nature often affects the mechanical performance, limiting their practical antifouling applications. In this study, a hydrogel composite was developed by incorporating ionic liquid-functionalized liquid metal nanofillers into a waterborne polyurethane-based hydrogel matrix to achieve enhanced antifouling and mechanical performance. The imidazolium ionic liquid containing a silane coupling agent was successfully grafted onto the liquid metal surface via a self-assembly process, and the resulting functionalized liquid metal was subsequently incorporated into a waterborne polyurethane/acrylic acid (PUGel) hydrogel matrix. The prepared TIm-GLM@PUGel exhibited outstanding comprehensive performance, achieving antibacterial rates of 87% against E. coli and 95% against S. aureus , as well as anti-algal rates of 98% against Dunaliella and 88% against Porphyridium . Moreover, the composite hydrogels demonstrated significantly improved mechanical behavior, with a tensile strength of 1.09 MPa and an elongation at break of 1059.8%. Notably, the TIm-GLM@PUGel showed remarkable self-healing performance, with a healing efficiency of 96.9%. This strategy offers a viable route toward high-performance and environmentally benign antifouling coatings. Download: Download high-res image (113KB) Download: Download full-size image
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高影响因子
POLYMER
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2026
·
IF 5.1
Wan Ting Cui,Pei Zhi Zheng,Qiu Xiang Wang,Peng Cheng Hu,Shu Feng Zhou,Ao Nan Lai
To develop high-performance anion exchange membranes (AEMs) with excellent alkaline stability and high hydroxide conductivity, a series of poly(styrene-co-4-vinylpyridine) (PSD-m/n) were rationally designed and synthesized. Based on mature synthetic strategies, this work optimized a superior molecular configuration. The prepared polymers possess a flexible all-carbon backbone and adopt a side-chain grafting strategy to anchor industrial ionic liquids. Such aryl ether-free membrane architecture can effectively suppress the alkaline degradation behavior of conventional AEMs under harsh working conditions. Target quaternized AEMs (QPSD-m/n) were successfully fabricated by reacting PSD-m/n with an industrial ionic liquid 3-Bromo-N,N,N-trimethylpropan-1-aminium bromide (abbreviated as BTPA, counterion: Br − ). The content of pyridine-functionalized segments in the polymer backbone was precisely tailored by adjusting the molar feed ratio of styrene to 4-vinylpyridine, enabling a systematic investigation of the membrane structure-property relationship. The optimized QPSD-m/n AEMs exhibit desirable ion exchange capacity (IEC) of 1.53-2.13 meq g −1 , show low water uptake (WU) (15.22-31.03%) and restrict swelling ratio (SR) (10.11-23.90%) at 80 °C. The membranes achieve a high hydroxide conductivity of 58.32-90.06 mS cm −1 at 80 °C under test conditions. Moreover, the QPSD-m/n AEMs possess excellent thermal stability and optimizable alkaline durability. This work demonstrates that the QPSD-m/n membranes exhibit favorable performance and hold promising application prospects.
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高影响因子
危险品化学品经营许可证（带存储）