JOURNAL OF SOLUTION CHEMISTRY
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2020
·Vol. 49
·期 3
·257-271
·
IF 1.273
Zhu Xiao,Song Mengling,Ling Baoping,Wang Sihan,Luo Xiaoyan
Abstract A novel anion-functionalized protic ionic liquid (IL), [DBUH][Triz], has been synthesized from 1,8-diazabicyclo [5.4.0]undec-7-ene (DBU) and 1,2,4-triazole (Triz). Density ( ρ ) and viscosity ( η ) of [DBUH][Triz] at different temperatures have been measured and the influence of temperature has been analyzed quantitatively. Then, the applications of [DBUH][Triz] in CO 2 absorption have been investigated. It has been detected that this ionic liquid, which was easily prepared, shows excellent reversibility and a high absorption capacity, about 1.5 mol CO 2 per 1 mol of IL (about 0.3 g CO 2 per 1 g of IL). In addition, the influence of temperature, pressure and moisture on the absorption performance of [DBUH][Triz] has been studied separately, indicating that absorption is promoted by lower temperature and higher CO 2 pressure. In addition, the mechanism of chemical absorption at two active sites has been deduced based on quantum-chemical calculations and 13 C NMR spectra coupled with IR spectra. Furthermore, the equilibrium constant of chemical absorption ( K ) was calculated from the CO 2 capacity at different temperatures ( T ) and a good linear relationship between the natural logarithm of the equilibrium constant ln K and 1/ T was obtained with R 2 of 0.996. From the slope and intercept of the fitted straight line, the molar reaction enthalpy change (Δ r H m ) and molar reaction entropy change (Δ r S m ) were analyzed, indicating that the capture of CO 2 is an exothermic process and the IL–CO 2 complex is less ordered than the pure ionic liquid. Graphic Abstract
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CHEMICAL ENGINEERING JOURNAL
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2020
·
IF 10.652
Hao Wang,Gengming Jiang,Qing Han,Yi Cheng
Droplet-based microfluidics offers an effective approach for overcoming the drawbacks of high viscosity and costs of ionic liquids (ILs) in practical applications. However, studies on the hydrodynamic behavior of the formation of IL-based Janus microdroplets which can facilitate the multifunctional applications of ILs through unique structures, are still limited due to their complex interfacial properties and high viscosities. Here, magnetic ionic liquid (MIL)-water Janus droplets were generated in an assembled co-flowing 3D-printed microchannel. Seven typical flow patterns of MIL-water Janus droplet generation were presented in a mountain-shaped flow pattern diagram, which was compared to the flow regime demarcations of MIL single-phase droplet formation. The scaling law of MIL-water Janus droplet size was analyzed to further reveal the breakup mechanism of biphasic dispersed phases with large differences in viscosities and interfacial tensions. Besides, the morphology control of surfactant-free MIL-water Janus droplet in the microchannel was investigated qualitatively and quantitatively. And, by changing the continuous phase, the morphology evolution of MIL-water Janus droplet to core-shell structure was also observed. The present study would be useful for providing a deep and comprehensive understanding on the formation and structure control of IL-based Janus microdroplets which are promising candidates for the use in applications of catalysis and extraction.
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JOURNAL OF POWER SOURCES
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2024
·
IF 8.1
Sa Xue,Yongqi Liu,Kun Hou,Maogang He,Xiangyang Liu
Ionic liquids with non-flammability and wide electrochemical window are the promising candidates for the next-generation high-energy lithium metal batteries (LMBs). However, their high viscosity and low ionic conductivity lead to a limited cycling performance, hindering their commercial application. Herein, a new ionic liquid-based electrolyte (ILE) composed of lithium bis(fluorosulfonyl)imide (LiFSI), N -methyl- N -propylpyrrolidinium bis(fluorosulfonyl)imide (Pyr 13 FSI), ethyl methyl carbonate (EMC) and fluorinated ethylene carbonate (FEC) is designed to address this barrier. The new ILE exhibits high conductivity, which is twice that of pure ILE. In addition, FEC that is weakly coordinated to Li + increases the combination between Li + and FSI − indirectly, inducing a deeper co-decomposition of FSI − and FEC, thereby leading to a construction of LiF-rich solid electrolyte interphase (SEI). Consequently, Li/Cu battery maintains a higher lithium stripping/plating Coulombic efficiency (CE) of 96.3 % at 250 cycles and Li/LiFePO 4 battery reaches a 93.2 % capacity retention at 150 cycles with an average CE of 99.8 %. The designed ILE with both high conductivity and electrochemical stability opens up a new insight for the rational design of electrolytes applied in next-generation LMBs.
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JOURNAL OF CHEMICAL AND ENGINEERING DATA
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2024
·
IF 2
Yutong Zhang,Yinge Bai,Mengjun Wang,Shaojuan Zeng,Wei Han,Xiangping Zhang
Ionic liquids (ILs) show great potential for the treatment of dichloromethane (DCM)-containing waste gases, but currently there are limited data on the vapor–liquid equilibrium (VLE) of DCM + IL systems. This work uses headspace gas chromatography (HS-GC) to determine the isothermal VLE data of the DCM + [Epy][EtSO4] and DCM + [Emim][EtSO4] systems at 308.15 K, 313.15 K, 318.15 K, 323.15 K, and 328.15 K. The nonrandom two-liquid (NRTL) and universal quasi-chemical correlation activity coefficient (UNIQUAC) models are used to regress the VLE data. The results show that the fitting average relative deviations (ARDs) of the DCM + [Epy][EtSO4] and DCM + [Emim][EtSO4] systems to the NRTL model were 6.97% and 7.95% and the fitting ARDs to the UNIQUAC model were 6.10% and 6.28%, respectively. The fitting effects of the UNIQUAC models for both systems were better than those of the NRTL model. With the models, the calculated activity coefficients of DCM were all less than 1, indicating that the solutions exhibited negative deviations from Raoult’s law, and the nonideality of the solutions increased with increasing IL concentration.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2019
·
IF 3.375
Jinlong Li,Tingting Li,Changjun Peng,Honglai Liu
Ionic liquids (ILs) of 1-ethyl-3-methylimidazolium acetate ([EMIM][OAC]), 1-ethyl-3-methylimidazolium proline ([EMIM][PRO]), and N,N,N-dimethyl-butylethanol amine glycolic acid ([N1,1,4C2OH][GAC]) are selected as entrainers for the extractive distillation to separate the mixture of acetonitrile and water based on the COSMO-RS method. The isobaric vapor–liquid equilibrium of ternary mixtures containing ILs at atmospheric pressure is determined, verifying that the used ILs can break the azeotropy of acetonitrile and water. On the basis of the thermodynamic analysis, a typical extractive distillation process is designed with Aspen Plus to evaluate the competitiveness of IL entrainers in separation performance. Significant savings of entrainer and energy, in which the solvent ratios in moles reduce from 0.94 to 0.09, 0.12, and 0.12 and the overall heat duties on the reboiler decrease 24.9, 17.5, and 15.4% for [EMIM][OAC], [EMIM][PRO], and [N1,1,4C2OH][GAC], respectively, can be achieved compared with those of ethylene glycol used as the entrainer.
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ACS Applied Materials & Interfaces
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2020
·
IF 8.758
Fengrui Zhang,Yiyang Sun,Zhicheng Wang,Daosong Fu,Jing Li,Jianchen Hu,Jingjing Xu,Xiaodong Wu
High-energy density solid-state lithium metal batteries are expected to become the next generation of energy storage devices. Polymeric ionic liquid-based solid polymer electrolytes (PIL-based SPEs) are an attractive choice among electrolytes, but their ionic conductivities are generally insufficient due to numerous crystallized polymer regions. To achieve higher conductivity, we use facile copolymerization of an ionic liquid (IL) monomer and poly(ethylene glycol) diacrylate monomer to obtain in situ plasticized polymer chains. The resultant PIL-based SPE exhibits decreased crystallinity, a lower glass-transition temperature, and improved ionic conductivity (1.4 × 10–4 S cm–1 at 30 °C). A solid-state LiFePO4 (LFP)|Li battery based on the SPE displays a high reversible specific capacity of 140 mA h g–1 at 0.2C at 25 °C and excellent cycling stability, accompanying high Coulombic efficiency of approximately 100%. The in situ plasticized PIL-based SPE is significant in developing solid-state Li metal battery systems.
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JOURNAL OF NANOPARTICLE RESEARCH
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2012
·Vol. 15
·期 1
·1-12
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IF 3.287
Yang Jintao,Yan Xiaohui,Chen Feng,Fan Ping,Zhong Mingqiang
In this paper, graphite oxide (GO) platelets functionalized by poly(ionic liquid) brushes were prepared by surface-initiated atom transfer radical polymerization (SI-ATRP). The chemical reduction of these functionalized platelets was also investigated. The functionalized platelets and their reduced products were characterized and confirmed by Fourier transform infrared spectroscopy, thermogravimetric analysis, ζ potential measurements, four-probe electrical measurements, and high-resolution transmission electron microscopy. Results demonstrated that the poly(ionic liquid) brushes could be grafted from the GO surface by SI-ATRP. The surface charges of the GO platelets surface transformed from negative to positive. Upon reduction by hydrazine, the functionalized platelets were partially reduced, as suggested by the observation that reduced GO exhibits electrical conductivity three magnitudes higher than that of original GO. Although partially reduced GO platelets were not as conductive as reduced GO without functionalization, they can be homogenously dispersed in water due to the presence of poly(ionic liquids) brushes.
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ACS Sustainable Chemistry & Engineering
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2025
·
IF 7.3
Haozhan Chu,Guoxiong Zhan,Kuilin Peng,Yinge Bai,Pengfei Gao,Hongyu Zhang,Zehua Wei,Xiangping Zhang,Shaojuan Zeng
Ionic liquids (ILs) show great potential for carbon dioxide (CO2) capture due to their designable structures and dual roles as absorbents and catalysts. Our previously designed IL solvent ([Cho][Triz]/TMS) showed good absorption performance but a slow regeneration rate. Here, a novel strategy to promote CO2 desorption in IL absorbents at lower temperatures using homogeneous Lewis acid IL (LAIL) catalysts was proposed. The cobalt (Co)-based LAIL [Bmim]2[CoCl4] exhibited superior performance, with the CO2 desorption amount enhanced by 54.1% and activation energy reduced by 30.3% compared with the blank test, leading to low regeneration energy consumption (0.90 GJ/t CO2), which was ascribed to a simultaneous increase in Brønsted and Lewis acid sites, promoting C–N bond cleavage by C2–H in [Bmim]22+ and Co sites in [CoCl4]2–. The environmental impact of IL-based CO2 capture processes, evaluated by the green degree method, demonstrated that the green degree production value of the IL-LAIL system is 79.6 and 673.6 gd/h higher than that of the IL and MEA systems, respectively, indicating greater environmental sustainability. This study provides a viable strategy for employing homogeneous catalysts to facilitate energy-efficient CO2 capture.
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产品关联
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高影响因子
ACS Materials Au
·
2025
·
IF 6.5
Yimei Tang,Rong Wang,Qian Bai,Haoyuan Wang,Tian Tian,Benquan Hu,Jian Zhang,Maofang He,Yuzhen Zhang,Suya Gao,Yun Zhang
To solve the bioavailability of nonsteroidal anti-inflammatory drugs and reduce their clinical risks, this study combined density functional theory (DFT) calculations with experiments and investigated the mechanism of in vitro transdermal absorption of choline ketoprofen gel and the pharmacokinetics of choline ketoprofen in rats. High-performance liquid chromatography (HPLC) was used to analyze the in vitro transdermal effect of ketoprofen in rats and the concentration of ketoprofen in the plasma of rats, which were administered choline ketoprofen by gavage. After the transdermal treatment, the rat skin was subjected to Hematoxylin and Eosin (H&E) staining and observe changes in skin structure. The results indicate that choline ketoprofen gel is superior to ketoprofen gel in terms of transdermal ability. Its transdermal rate is 1.4–2.2 times that of ketoprofen gel. The results show that the interaction force between choline ketoprofen and phospholipids is approximately 2.5 times that between ketoprofen and phospholipids, causing edema in epidermal cells and the dermis, which enlarges the intercellular space and then enhances the transdermal absorption capacity of ketoprofen. Compared with the ketoprofen suspension, the peak concentration of ketoprofen increased from 7.708 to 39.495 mg·L–1 (p < 0.05) for ketoprofen choline, and the relative bioavailability was 479.86%. It can be seen that the drug ionic liquid pathway can improve the absorption of drugs by the body and can better exhibit the dual functions of ionic liquids (penetration enhancers, surfactants, etc.) and drugs. These preliminary research results can lay the foundation for in-depth research on ketoprofen ionic liquid gels.
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DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2025
·
IF 4.7
Dan Gu,Yangyang Wang,Chi Cao,Haiping Xu,Yuan Zhang,Haiming Cheng,Huiyan Wang
Low-dimensional lead-free metal halide materials have garnered significant attention from researchers due to their unique optical properties. Manganese(II)-based metal halides have emerged as promising candidates for use in white light-emitting diodes (LEDs) and scintillator applications. This work introduces two instances of manganese bromide compound crystals characterized by zero-dimensional structures, which have been synthesized utilizing pyridinium-based ionic liquids as organic ligands, designated as (C 10 H 16 N) 2 MnBr 4 (CP1, C 10 H 16 N = 1‑butyl‑3-methylpyridine cation) and (C 10 H 16 N) 2 MnBr 4 (CP2, C 10 H 16 N = 1‑butyl‑4-methylpyridine cation). Upon excitation with ultraviolet (UV) light, the CP1 and CP2 crystals exhibited green photoluminescence, with quantum yields of photoluminescence (PLQY) measured at 47.59 % for CP1 and 68.31 % for CP2, respectively. The zero-dimensional manganese bromide compound CP2, which has been synthesized utilizing pyridine-based ionic liquids, demonstrates potential as an X-ray imaging scintillator. It exhibits a light yield of 17,337 photons/MeV and a detection limit of 343 nGy air /s. The spatial resolution of the CP2@PVDF flexible film is as high as 8.3 lp/mm. This work demonstrates that pyridine-based ionic liquids, when used as organic ligands, provide innovative design concepts for the synthesis of novel manganese-based halides.
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高影响因子
LANGMUIR
·
2026
·
IF 4.4
Zhengkun Yao,Ru Liu,Zekun Kang,Huanchen Liu,Qingyu Li,Xia Zhang
Layered double hydroxides (LDH), characterized by a unique layered structure with exchangeable interlayer anions, are an important class of inorganic functional materials. Their tunable composition and structure make them promising candidates as lubrication additives. However, LDH are limited in their long-term dispersibility and stability, and their compatibility with industrial lubrication mixtures has yet to be fully investigated, so their application in lubrication remains a major difficulty. This study involved the intercalation modification of LDH by alkyl alcohol amine phosphate ionic liquids (PIL) to ensure their stable distribution in water. The results showed that the use of ionic liquid intercalated double hydroxide (PIL-LDH) as an aqueous lubricant additive could significantly reduce friction and wear resistance and even reduce peak wear by 99.7%. PIL-LDH achieves self-lubrication and self-healing through interlayer slip and PIL release combined with chemisorbed and physically deposited layers.
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 4.3
Mengjing Feng,Zhigang Lei,Chengmin Gui
The dissolution mechanism of the poorly water-soluble drugs ibuprofen and aspirin in ionic liquids (ILs) was investigated by experiment, quantum chemical calculations, and molecular dynamic simulations. A comprehensive screening of 420 IL candidates was conducted using the COSMO-RS model, resulting in the selection of three cations ([EMIM] + , [HMIM] + , [P 4441 ] + ) and three anions ([TFA] − , [N(CN) 2 ] − , [CH 3 SO 4 ] − ) based on their viscosity and drug solubility. After evaluating solubility, viscosity, and cost, [EMIM][TFA] was identified as the optimal solvent. In this system, the [TFA] − forms hydrogen bonds with the drug molecules, while the [EMIM] + primarily participates in van der Waals (vdW) interactions. The solubility of ibuprofen and aspirin in [EMIM][TFA] reaches as high as 544.93 mg/mL and 387.29 mg/mL, respectively, at 323.15 K. Atoms in molecules analysis suggests that hydrogen bonding between the three anions and the drug facilitates drug solubilization; in addition, although individual vdW interactions are weak, the multisite vdW interactions between the three cations and the drug molecules exhibit significant synergy, resulting in an overall enhancement of the solubilization. Overall, drug solubilization in ILs is primarily driven by hydrogen bonding with anions and vdW interactions with cations, presenting a novel strategy for designing green and efficient drug carriers.
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