JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Hui-Fang Xiao,Chang-Hui Chu,Wang-Ting Xu,Bo-Zhi Chen,Xiao-Hui Ju,Weihong Xing,Shi-Peng Sun
Inspired by the amphibian skin of Bombina orientalis, which is a kind of ancient toad species, amino acid ionic liquid (AAIL) is employed to functionalize interfacial polymerized nanofiltration membrane. AAIL offers the membranes with (1) higher hydrophilicity leading to pure water permeability of 12.2 L·h −1 ·m −2 ·bar −1 , which is 63% higher than conventional NF membranes; (2) more negatively charged surface and slightly larger pore size, which results in a high Na 2 SO 4 /NaCl selectivity of 973.9, which is 43 times increased from conventional NF membrane and effective for resource recovery from pigment wastewater. Furthermore, the amino acid end groups (glycine) of AAIL, similar to the epidermal secretion of Bombina orientalis, act as humectant that prevents pore shrinkage during heat-treatment, which is important for membrane storage and transport. The AAIL functionalized membrane may provide an effective strategy to design high performance nanofiltration membranes for small molecular separations in pigment and other industries.
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TRIBOLOGY INTERNATIONAL
·
2025
·
IF 6.9
Jingwen Guan,Bingyu Tian,Yingying Yao,Mengyao Liu,Jingyu Shan,Ping Wen,Rui Dong,Mingjin Fan
Functional additives are crucial for achieving high performance at low concentrations to the polyethylene glycol water-based lubricants (PEG-H 2 O), further affecting their broad application prospects for industrial lubrication. Herein, the novel protic ionic liquids (ILs) were synthesized and introduced as functional additives to construct the high-performance water-based lubrication system. The improved corrosion resistance and adsorption performance is ascribed to the strong adsorption. And the friction coefficient and wear volume decreased by 60 % and 55 %, respectively. More importantly, superior lubrication stability can be obtained at high-load (800 N) and high-frequency (100 Hz) condition. This enhanced performance mainly depends on self-assembly behavior of IL molecules at the sliding interface, as well as synergistic effect of adsorption layer, H-bond network and tribo-chemical reaction. Besides, the dihydroxy structure in the cation is more conducive to the optimal molecular self-assembly structure. This work enriches design strategy of multifunctional water-based lubricants and sustainable lubrication technology.
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LANGMUIR
·
2025
·
IF 3.9
Song Wei,Xueyong Huang,Xuexiao Chen,Lei Zhang
With their excellent optical properties, perovskite thin films demonstrate vast potential for practical applications, ranging from solid-state lighting to advanced display technique. In this work, environmentally benign ionic liquids were employed to synthesize high-quality CsPbBr3 perovskite films. Several carboxylate amine ionic liquids were introduced to prepare CsPbBr3 perovskite thin films. The optimal preparation conditions of the perovskite thin films were screened and predicted by machine learning algorithms. The predicted results are highly consistent with the subsequent verification experiments. The employment of machine learning algorithms has been demonstrated to result in enhanced PL intensity and improved film quality in perovskite thin films. This work provided a new strategy for the utilization of machine learning algorithms in perovskite luminescent materials.
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MICROCHIMICA ACTA
·
2011
·Vol. 175
·期 3
·341-346
·
IF 2.578
Jiang Xinyu,Zhang Hui,Chen Xiaoqing
We report on the determination of bisphenol A and 2-naphthol in water samples using ionic liquid cold-induced aggregation dispersive liquid-liquid microextraction combined with HPLC. Parameters governing the extraction efficiency (disperser solvent, volume of extraction and disperser solvent, pH, temperature, extraction time) were optimized and resulted in enrichment factors of 112 for bisphenol A and of 186 for 2-naphthol. The calibration curve was linear with correlation coefficients of 0.9995 and 0.9998, respectively, in the concentration range from 1.5 to 200 ng mL −1 . The relative standard deviations are 2.3% and 4.1% (for n = 5), the limits of detection are 0.58 and 0.86 ng mL −1 , and relative recoveries in tap, lake and river water samples range between 100.1 and 108.1%, 99.4 and 106.2%, and 97.1 and 103.8%, respectively.
IL-CIA-DLLME has a high enrichment factor (112, 186), acceptable relative recovery (97.1%–108.1%), good repeatability (2.3%, 4.1%) and a wide linear range(1.5–200 ng mL −1 ) for the determination of bisphenol A and 2-naphthol.
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INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Runping Wang,Zaibo Yang,Wenzhi Lv,Zhijian Tan,Hongfu Zhang
The choline tryptophan ionic liquid (IL)-based aqueous biphasic system (ABS) was designed and applied to extract and separate flavonoids and iridoids from Eucommia ulmoides leaves. This ABS possessed a unique viscous layer enriching iridoids that can be directly removed at the interface between the IL-rich and salt-rich phases. The extraction yield of total flavonoids was optimized by RSM to obtain a predicted maximum of 2.91% at the IL concentration of 36.73%, liquid to solid ratio of 38, extraction temperature of 44 °C and extraction time of 105 min. The determined extraction yield of total flavonoids is 2.78% ± 0.12% under revised optimization conditions. The distribution coefficient K and extraction rate E of total flavonoids in the IL-rich phase reach the maximum of 129% and 98.53% at the K 3 PO 4 content of 26% in the ILABS, respectively. The HPLC analysis shows a high content of rutin in the flavonoids precipitate induced by water as an anti-solvent. Aucubin content reaches 15.19% in the intermediate viscous layer enriching iridoids. Hence, the designed process has the potential to be applied to the separation and enrichment of rutin and aucubin from other industrial crops.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2023
·
IF 4.2
Siheng Qian,Jing Hu,Rimin You,Xiaobing Wang,Lifeng Yang,Huabin Xing,Xili Cui
SO2 emission has become an important issue due to its harmful impact on human health and the ecological environment. Adsorption separation is an energy-efficient technology to capture SO2, but it suffers from competitive adsorption of CO2. Here, we present a strategy to improve the separation performance of porous adsorbents through the fabrication of mixed-matrix adsorbents. By the introduction of a perm-selective polymer (P(D[VImC6]Br)) as the matrix to enclose anion-pillared microporous materials (SIFSIX-3-Ni), CO2 molecules were selectively blocked, while the SO2 molecules could still permeate the polymer matrix and access the porous particles of SIFSIX-3-Ni. As a result, a high SO20.2%/CO210% uptake ratio of 32 at 298 K and 1 bar and a high SO2 uptake capacity of 0.67 mmol g–1 at 0.002 bar were achieved for the mixed-matrix adsorbents of SIFSIX-3-Ni@PIL-1/1. The strategy for fabricating a perm-selective matrix around the porous adsorbent particles to improve the adsorption performance is generally applicable to other porous adsorbents.
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HYDROMETALLURGY
·
2020
·
IF 3.338
Fujian Li,Zhong Xiao,Jingyao Zeng,Jinqing Chen,Xiaoqi Sun
Ionic liquid (IL) based on tetraheptylammonium cooking oil (TC) was used for the first time to recovery rare earth elements (REEs) from leaching liquor of ion-adsorbed-type rare earths ores. Firstly, extraction performances of tetraheptylammonium oleate (TO) and tetraheptylammonium linoleate (TL) type ILs were investigated. It was shown that these ILs had good extraction performances, such as short equilibrium time less than 1 min, good extraction capacity of 0.225 mol/L and high stripping efficiency of 99%. Additionally, REEs extraction occurred in the solutions with high acidity (pH = 0.24) because the cation (C 7 H 15 ) 4 N + of TO and TL could form a strong amine salt with hydrogen ion to decrease acidity of the feed solution. Also, an ion association mechanism of REEs extraction was proposed by FT-IR spectra, 1 H NMR investigation and slope analysis method. Secondly, TC was synthesized in water bath by mixing tetraheptylammonium bromide with saponified peanut oil. Then, comparative study of commercial extractants showed that TC had the highest REEs recovery yield of 100% from the leaching liquor. The sustainability, biocompatibility and non-toxicity, as well as simple synthesis route and well extraction performances make these cooking oil based ILs promising for REEs recovery from the leaching liquor.
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Journal of the Iranian Chemical Society
·
2017
·Vol. 14
·期 9
·2017-2022
·
IF 1.407
Qin Xingxiu,Bakheet Almojtaba AbdAlkhalig Ahmed,Zhu Xiashi
Fe 3 O 4 @ionic liquids β-cyclodextrin polymer(Fe 3 O 4 @mono-6-deoxy-6-(1-ethyl-imidazolium)-β-cyclodextrin iodide polymer, Fe 3 O 4 @ILs-β-CDCP) was prepared. Magnetic solid phase extraction coupled with high-performance liquid chromatography for the separation/analysis of congo red (CR) in water and drysaltery was established. Fe 3 O 4 @ILs-β-CDCP showed a higher adsorption capacity toward CR. CR was adsorbed rapidly by Fe 3 O 4 @ILs-β-CDCP (adsorption efficiency: 95%) and eluted by ethanol (elution efficiency: 96%) at room temperature. Under the optimal conditions, preconcentration factor of the proposed method was 20-fold. The linear range, correlation coefficient ( R
2 ), detection limit (DL) and relative standard deviation were found to be 0.005–100.00 µg mL −1 , 0.9910, 1.8 g L −1 and 0.61% ( n = 3, c = 5.00 µg mL −1 ), respectively. The adsorption mechanism of CR on Fe 3 O 4 @ILs-β-CDCP was studied through the FTIR analysis. The accuracy of the developed method was confirmed by spiking city water, lake water, pond water and drysaltery. Fe 3 O 4 @ILs-β-CDCP can be used repeatedly for 10 times. This proposed method had been successfully applied to the determination of CR in real samples.
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RSC Advances
·
2021
·Vol. 11
·期 56
·35687-35694
·
IF 3.361
Fu Jie Yang,Qing Feng Liu,Xiao Bing Wu,Yu Yi He,Xu Gang Shu,Jin Huang
Polymer electrolytes offer great potential for emerging wearable electronics. However, the development of a polymer electrolyte that has high ionic conductivity, stretchability and security simultaneously is still a considerable challenge. Herein, we reported an effective approach for fabricating high-performance poly(ionic liquids) (PILs) copolymer (denoted as PIL-BA) electrolytes by the interaction between flexible units (butyl acrylate) and counteranions. The introduction of butyl acrylate units and bis(trifluoromethane-sulfonyl)imide (TFSI−) counteranions can significantly enhance the mobility of polymer chains, resulting in the effective improvement of ion transport, toughness and self-healability. As a result, the PIL-BA copolymer-based electrolytes containing TFSI− counterions achieved the highest ionic conductivity of 2.71 ± 0.17 mS cm−1, 1129% of that of a PIL homopolymer electrolyte containing Cl− counterions. Moreover, the PIL-BA copolymer-based electrolytes also exhibit ultrahigh tensile strain of 1762% and good self-healable capability. Such multifunctional polymer electrolytes can potentially be applied for safe and stable wearable electronics.
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International Journal of Electrochemical Science
·
2023
·
IF 1.5
Hongying Cheng,Song Liu,Cuiying Hu,Hongxia Wang
A novel flower-like film composed of uniform hollow TiO 2 -NH 2 nano-shell (HTNs), luminol and aniline was synthesized by electro-copolymerization method in acidic ionic liquid EmimCl (IL, 1-ethyl-3-methylimidazolium chloride). The surficial morphology of the film was characterized by scanning electron microscope (SEM), transmission electron microscope (TEM), selected-area electron diffraction (SAED) and atomic force microscope (AFM), which showed the polycrystalline property. Its copolymerization mechanism was discussed in detail, which presented symmetric arrangement. The most obvious multiple increase of peak current in CV indicated the conjugate of HTNs in luminol structure and in aromatic ring skeleton. This film with excellent electrocatalysis performance used for nonelectroactive acetochlor (ACT) detection showed the lowest catalytic potential. Some important parameters were optimized for a homogeneous film and for a sensitive detection. On the optimum film, the electrocatalysis sensor exhibited a linear response within the concentration range of ACT from 2.0×10 −7 M to 1.5×10 −5 M, and an absolute detection limit of 0.15×10 -9 M at a signal-to-noise ratio of 3. Then the proposed method was used for the detection of ACT residue in the real strawberry sample with good results. The promising sensor presents good reproducibility and stability, providing a new fast and sensitive method for the analysis of real samples in environment.
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CARBOHYDRATE POLYMERS
·
2024
·
IF 10.7
Jingmin Shen,Lu Lu,Rongtong He,Qichao Ye,Chao Yuan,Li Guo,Meng Zhao,Bo Cui
Conductive hydrogels have been widely used in wearable electronics due to their flexible, conductive and adjustable properties. With ever-growing demand for sustainable and biocompatible sensing materials, biopolymer-based hydrogels have drawn significant attention. Among them, starch-based hydrogels have a great potential for wearable electronics. However, it remains challenging to develop multifunctional starch-based hydrogels with high stretchability, good conductivity, excellent durability and high sensitivity. Herein, amylopectin and ionic liquid were introduced into a hydrophobic association hydrogel to endow it with versatility. Benefiting from the synergistic effect of amylopectin and ionic liquid, the hydrogel exhibited excellent mechanical properties (the elongation of 2540 % with a Young's modulus of 12.0 kPa and a toughness of 1.3 MJ·m −3 ), self-recovery, good electrical properties (a conductivity of 1.8 S·m −1 and electrical self-healing), high sensitivity (gauge factor up to 26.85) and excellent durability (5850 cycles). The above properties of the hydrogel were closely correlated to its internal structure from hydrophobic association, H-bonding and electrostatic interaction, and can be regulated by changing the component contents. A wireless wearable sensor based on the hydrogel realized accurate and stable monitoring of joint motions and expression changes. This work demonstrates a kind of promising biopolymer-based materials as candidates for high-performance flexible wearable sensors.
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Advanced Composites and Hybrid Materials
·
2025
·Vol. 8
·期 5
·1-12
·
IF 21.8
Wang Jianwen,Liu Xueqing,Chu Beizhi,Xia Yumin,Chen Yuwei,Li Yue,Zhang Jianming
The increasing power density of modern electronic devices has brought thermal accumulation issues to the forefront, spurring the development of various materials. Among them, thermally conductive polymer composites have shown immense potential. However, achieving high thermal conductivity typically requires a substantial loading of inorganic fillers to form effective thermal conduction networks. To address this, this study explores the use of electric field-assisted alignment facilitated by ionic liquids (IL) to orient boron nitride (BN) and construct efficient thermal conduction pathways at low filler loading. IL/BN/PDMS thermally conductive composite films were prepared, and the mechanism of IL-assisted BN alignment under an electric field was elucidated through a combination of simulations and experiments. Molecular simulations conducted via Materials Studio (MS) reveal that the adsorption of ionic liquid (IL) on the boron nitride (BN) surface is predominantly governed by van der Waals and electrostatic interactions. This interfacial interaction enables IL to act as an orienting agent under an electric field, thereby promoting the directional alignment of BN within the PDMS matrix. The prepared composite films exhibited a thermal conductivity of 0.625 W·m⁻1·K⁻1, a significant improvement over non-aligned films (0.461 W·m⁻1·K⁻1). Additionally, the dielectric constant of the aligned films increased significantly at low frequencies, while dielectric loss rose modestly from ~ 0.5 to ~ 1.5. This study is the first to reveal how IL assists BN alignment. It highlights the advantages of electric field-assisted alignment for preparing thermally conductive composites. The findings offer theoretical insights and practical guidance for developing thermal materials and improving thermal management in advanced electronics.
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