HYDROMETALLURGY
·
2019
·
IF 3.465
Zhenning Lou,Mengnan Huang,Junshuo Cui,Shuyao Wu,Shanshan Xing,Peng Zhou,Weijun Shan,Ying Xiong
Technetium ( 99 Tc), a radionuclide generated from uranium fission in nuclear reactors, has posed a major threat to humans due to its long half-life and radioactivity. Therefore, it is urgent to develop a strategy of selectively and efficiently capturing of 99 Tc. In this work, a series of solid copolymers (denoted as DVB-[C x ClVim][Cl]) were synthesized for efficient adsorption of perrhenate (ReO 4 − , a surrogate for TcO 4 − ) from mixed ions solution. The adsorbents with vinylimidazolium-based ionic liquid as functional group and divinylbenzene (DVB) as the basic framework exhibited stable structure and good ReO 4 − adsorption performance. The influences of the linear n-alkyl chain length on the morphology and adsorption property of the copolymers were discussed in detail. The maximum uptake of Re(VII) on DVB-[C 4 ClVim][Cl] was 517.61 mg·g −1 . Rhenium could be separated from molybdenum in the presence of co-anions and co-cations by DVB-[C 6 ClVim][Cl], which demonstrated its good adsorption selectivity . The kinetic studies showed that pseudo-second-order model was more suitable for describing the behavior of Re(VII) adsorption. The adsorption mechanism was ion-exchange between Cl − and ReO 4 − confirmed by FI-IR, IC and XPS analysis. Additionally, DVB-[C x ClVim][Cl] remained effective Re(VII) capture ability after eight adsorption/elution cycles, demonstrating their good reusability.
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DOI
高影响因子
International Journal of Greenhouse Gas Control
·
2019
·
IF 3.231
Fangfang Li,Yinge Bai,Shaojuan Zeng,Xiaodong Liang,Hui Wang,Feng Huo,Xiangping Zhang
Protic ionic liquids (PILs) are considered as potential solvents for CO 2 capture due to their simple synthetic routes and unique properties. In this work, three low viscous PILs, tetramethylgunidinium imidazole ([TMGH][Im]), tetramethylgunidinium pyrrole ([TMGH][Pyrr]) and tetramethylgunidinium phenol ([TMGH][PhO]) were synthesized and the effect of anions, temperature, CO 2 partial pressure and water content on CO 2 absorption performance of PILs was also systematically studied. It was found that the PILs with larger basicity show higher CO 2 absorption capacity, and [TMGH][Im] simultaneously shows relatively high absorption rate and CO 2 absorption capacity of 0.154 g CO 2 /g IL at 40 °C, 1 bar. The addition of H 2 O has a positive effect on gravimetric absorption capacity of CO 2 at the range of 0–20 wt% H 2 O, and the highest capacity of 0.186 g CO 2 /g IL was achieved as the water content was 7 wt%. In situ FTIR, 13 C NMR and theoretical calculations verified that more stable bicarbonate are produced during CO 2 absorption by [TMGH][Im]-H 2 O system. However, neat [TMGH][Im] can react with CO 2 to form the reversible carbamate, leading to excellent recyclability after four absorption-desorption cycles. The results implied that neat [TMGH][Im] shows great potentials in CO 2 absorption applications.
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DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2024
·
IF 2
Jiaming Zhu,Feihu Li,Xiwei Hu,Qunsheng Li,Hongkang Zhao
This study investigates the phase equilibrium behavior of the isopropyl acetate (IAC)-isopropanol (IPA) azeotrope system at 101.3 kPa in the presence of three different imidazolium-based ionic liquids (ILs) as entrainers, 1-butyl-3-methylimidazolium acetate ([BMIM][Ac]), 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([BMIM][NTf2]), and 1-hexyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([HMIM][NTf2]). First, according to the measured vapor–liquid equilibrium (VLE) data of the binary system IAC(1)-IPA(2) and the ternary system IAC(1)-IPA(2)-ILs(3), [BMIM][Ac] in the ternary system produces a strong salting-in effect on IPA, while [BMIM][NTf2] and [HMIM][NTf2] produces a salting-in effect on IAC, and the effect of [BMIM][Ac] is much stronger than [BMIM][NTf2] and [HMIM][NTf2]. This work uses the nonrandom (local) two-liquid equation to correlate the VLE data. The mole fractions of [BMIM][Ac], [BMIM][NTf2], and [HMIM][NTf2] required to exactly eliminate the azeotropic point of the IAC-IPA system are 0.035, 0.144, and 0.206, respectively.
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高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 153
·期 6
·1625-1634
·
IF 2.936
Guang Binxiong,Zhang Wei,Wu Yuefeng,Xiao Yahui,Su Miaojun,Liu Yong
Dual sulfonic acid functionalized heteropolyacid-based ionic liquids were synthesized, characterized and used as novel solid acid catalysts for selective esterification of glycerol with acetic acid toward fuel-additive triacetylglycerol (TAG). The results indicated that the as-prepared [BS 2 TMEDA]HPW 12 O 40 catalyst had the highest catalytic activity and selectivity to TAG compared with commercial H 3 PW 12 O 40 , H 2 SO 4 and Amberlyst-15 catalysts, which was attribute to its medium acidity of dual-SO 3 H groups and carbon chain length. The effects of reaction temperature, catalyst amount, acetic acid to glycerol mole ratio and reaction time on glycerol conversion and selectivity to TAG were also investigated. Under the optimized reaction condition, the glycerol conversion and selectivity to TAG reach 100% and 70.9%, respectively. Moreover, no significant loss in glycerol conversion and selectivity to TAG were observed after reused four recycles, showing favorable catalytic reusability and stability. Graphical Abstract
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高影响因子
NANO
·
2024
·
IF 1
Kai Su,Peng Chen,Hao Gao,Yuan Zhai,Youbei Qiao,Chaoli Wang,Feng Yang
Tumor microenvironment severely restricts the delivery of chemotherapy drugs. The microenvironment responsive nanoparticles often have complex designs with hampered clinical translatability. Here, we show a kind of ionic liquids (ILs) with soybean lecithin (SL) as cation, folic acid (FA) as anion, in particular, it could formulate nanoliposome by film evaporation method to deliver cis-Diamineplatinum (II) dichloride (cisplatin, Cis) and doxorubicin hydrochloride (DOX). These special ILs liposome could target tumor cells via folate receptor-mediated endocytosis by enhancing the cellular uptake, and significantly improve the deep permeability by actively infiltrating throughout the tumor tissue owing to the special noncovalent bond between SL–FA ILs with cell membrane. Moreover, ILs liposomes improve delivery efficiency of Cis and DOX and enhance the combined chemotherapeutic effect. The simple preparation process of the ILs nanoliposome should facilitate the clinical transformation of nanodrugs.
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DOI
高影响因子
TALANTA
·
2019
·
IF 4.916
Lijun Song,Haijuan Zhang,Jia Chen,Zhan Li,Ming Guan,Hongdeng Qiu
In this study, imidazolium ionic liquids-derived carbon dots (ImCDs) were successfully synthesized and bonded on the surface of spherical porous silica as a new stationary phase (Sil-ImCDs) for hydrophilic interaction chromatography (HILIC). First, the ImCDs were synthesized by the reaction of amino ionic liquids with citric acid , and then they were grafted onto the surface of aminopropyl-modified silica. A series of characterizations including infrared spectra, elemental analysis and laser confocal microscope proved that the preparation was successful. It was found that the Sil-ImCDs had good separation efficiency in the separation of bases, nucleosides , amino acids , saccharides and ginsenosides . It is interesting that we found that Sil-ImCDs has better hydrophilic chromatographic performance compared with methylimidazole-modified silica and aminopropyl-modified silica. It may be due to the rich functional group which is available after the formation of carbon dots from imidazolium ionic liquids and citric acid.
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DOI
高影响因子
ACS Applied Materials & Interfaces
·
2020
·
IF 8.758
Wenyu Zhang,Xiaojie Liu,Benlin He,Zekun Gong,Jingwei Zhu,Yang Ding,Haiyan Chen,Qunwei Tang
The defect passivation of perovskite films is an efficacious way to further boost the power conversion efficiency (PCE) and long-term stability of perovskite solar cells (PSCs). In this work, ionic liquids (ILs) of 1-butyl-2,3-dimethylimidazolium chloride ([BMMIm]Cl) are used as a modification layer in perovskite films in carbon-based CsPbBr3 PSCs without a hole-transporting material (HTM) for passivating the surface defects. The preliminary results demonstrate that the [BMMIm]Cl modifier passivates the surface defects of the perovskite film and reduces the valence band of perovskite close to the work function of the carbon electrode, which causes a remarkably inhibited nonradiative and radiative charge recombination, improved energy-level matching, and decreased energy loss. After optimization, a champion efficiency of 9.92% with a Voc as high as 1.61 V is achieved for the [BMMIm]Cl tailored carbon-based CsPbBr3 PSC without HTM, which is improved by 61.3% in comparison with 6.15% for the control device. Furthermore, the encapsulation-free PSC presents good long-term stability after storage in an air atmosphere with 70% RH at 20 °C or 0% RH at 80 °C as well as under continuous illumination conditions for 30 days. The significantly improved PCE and stability in high humidity or temperature suggest that the perovskite passivation by ILs is an effective strategy for fabricating high-PCE and stable PSCs.
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DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Jiaxi Yang,Dan Gao,Heng Zhang,Qun Yi
The efficient capture of carbon dioxide (CO 2 ) by porous ionic liquids (PILs) has become one of the important ways to deal with the greenhouse effect and enhance environmental protection. In order to enhance the CO 2 capture efficiency of PILs, 2 amino-functional ionic liquids (ILs) were synthesized in deionized water: tetraethylenepentamine-2-methylimidazole ([TEPA][MIm]) and diethylenetriamine-2-methylimidazole ([DETA][MIm]). 2 zeolite imidazolidin-8 frames (ZIF-8-W and ZIF-8-M) were prepared in methanol and deionized water. The performance of the material was verified through FT-IR infrared spectroscopy, TGA-DTG curves, XRD spectra, adsorption desorption curves, and corrosive changes. Based on this, the porous ionic liquid ZIF-8-W/[TEPA][MIm] with the best performance and ZIF-8-W with the best environmental friendliness were successfully constructed. The chemical reaction mechanism of CO 2 in PILs were explored. The results showed that the thermogravimetric temperature of all materials was greater than 370 K, and the difference in adsorption capacity between ZIF-8-W and ZIF-8-M was only about 36.3 ml/g, the maximum mass change rates of the two ILs after immersion in ceramic and stainless steel tubes for 7 days were only 0.78 % and 0.29 %, respectively. On the premise of ensuring fluidity, the maximum capture capacity of ZIF-8-W/[TEPA][MIm] for pure CO 2 reached 2.22 mol/mol PILs, and the maximum capture capacity for CO 2 in artificial flue gas reached 2.03 mol/mol PILs, which was 21.9 % and 31.6 % higher than the maximum capture capacity of pure ionic liquids, respectively. When [TEPA][MIm] in PILs reacts with CO 2 , it conforms to the characteristics of “zwitterions”.
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高影响因子
INDUSTRIAL LUBRICATION AND TRIBOLOGY
·
2023
·Vol. 75
·期 10
·1161-1169
·
IF 1.6
Huimin Yang,Chunlin Ye,Yi Li,Songwei Zhang
Purpose This study aims to probe the applicability of 2-mercaptobenzothiazole (MBT) functionalized ionic liquids (ILs) as additives in lithium complex grease (LCG) by researching the corrosion inhibiting, rheological and tribological performances. Design/methodology/approach Electrochemical tests such as electrochemical impedance spectroscopy and potentiodynamic polarization curves were used on Gamry electrochemical workstation to research the corrosion inhibition properties of ILs in 1.0 M HCl corrosive solution. The rheological properties of different grease samples were tested on a rheometer. The tribological properties were investigated on SRV-V oscillating reciprocating friction and wear tester. Scanning electron microscope, X-ray spectrometer and X-ray photoelectron spectrometer were used to characterize the lubricating mechanism. Findings The 2-MBT functionalized ILs have excellent corrosion inhibition properties. When used as additives in LCG, they both exhibited enhancing effects on thermostability, colloid stability and structural recoverability, and furthermore, outstanding friction-reducing and antiwear properties were also obtained. Surface analysis indicated that the superior lubricating performances of 2-MBT functionalized ILs were mainly ascribed to the formation of tribochemical products on wear tracks, including organic compounds with C–O bond, Fe 2 O 3 and FeS 2 . Originality/value The 2-MBT-based ILs synthesized in this study were multifunctional additives with excellent corrosion inhibiting and tribological properties, which would have a very broad application prospect in lubricating grease industry.
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高影响因子
Soft Matter
·
2021
·Vol. 17
·期 12
·3494-3502
·
IF 3.679
Wenchang Zhuang,Chunhua Zhao,Yue Pan,Qintang Li
As tailorable solvents, the physiochemical properties of ionic liquids can be tuned by the structure of ions. Herein, we investigate the structural effects of ILs on the self-assembly of surfactants. It has been confirmed that the cationic surfactant 1-hexadecyl-3-methylimidazolium bromide (C16mimBr) can self-assemble into micellar and lamellar lyotropic liquid crystal phases in the aprotic ionic liquid (AIL) 1-ethyl-3-methylimidazolium tetrafluoroborate ([Emim]BF4). In this work, we explore the aggregation behaviours in AILs with different alkyl chains on the imidazolium group, i.e., 1-propyl-3-methylimidazolium tetrafluoroborate ([Pmim]BF4), 1-butyl-3-methylimidazolium tetrafluoroborate ([Bmim]BF4), 1-hexyl-3-methylimidazolium tetrafluoroborate ([Hmim]BF4) and 1-octyl-3-methylimidazolium tetrafluoroborate ([Omim]BF4). With the increase of the cation chain length, AILs have better solubility of the solvophobic part of the surfactants and hence a weaker driving force for self-assembly. Therefore, the critical micellization concentration of C16mimBr in AILs increases as confirmed by the surface tension and small angle X-ray scattering characterizations. More interesting things happen to the phase behaviours. Besides the micellar and lamellar lyotropic liquid crystal phases, a hexagonal lyotropic liquid crystal phase is formed in [Pmim]BF4 while hexagonal and bicontinuous cubic lyotropic liquid crystal phases are formed in [Bmim]BF4, [Hmim]BF4 and [Omim]BF4. It is surprising to observe richer phase behaviours in solvents of lower cohesive energy. The detailed structural information of various aggregates has been obtained by small-angle X-ray scattering. It is demonstrated that AILs work as not only solvents but also co-surfactants.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Fangfang Su,Jiahe Liang,Zhongjie He,Yangyang Xin,Yisong Liu,Weirui Zhang,Zhuojun Mao,Lijun Yuan,Yaping Zheng,Xiaoqian Li
Recently, with the escalating severity of energy consumption issues, solar energy has attracted significant attention due to its clean, pollution-free, and renewable characteristics, among which solar thermal utilization is currently the most efficient way of utilizing solar energy. Ionic liquids (ILs) exhibit excellent thermal stability and wide liquid-phase range, but their limited optical absorption properties restrict practical applications. In this work, we pioneer the incorporation of magnetic ionic liquids (MILs) into nanofluids (NF) to boost the solar-thermal conversion of ILs-based systems. A novel nanofluid was engineered through electrostatic assembly of C-MOF@Ti 3 C 2 T x with hybrid ionic liquids (HIL), where HIL was synthesized by integrating MIL into non-magnetic ILs to enhance the optical absorption of the base fluid. Moreover, MXene deposition on the C-MOF surface after copper oxide removal effectively reduces the interfacial reflection coefficient of nanoparticles while improving full-spectrum solar absorption. The research indicates that incorporation MIL significantly enhances the optical absorption properties of the base fluid. The C-MOF@Ti 3 C 2 T x -HIL NF exhibits excellent thermal stability below 400 °C, low viscosity (50 mPa·s at 25 °C), and high solar absorption capacity, making it highly suitable for both pumping and heat generation in industrial applications. Furthermore, stagnation temperature tests revealed that the C-MOF@Ti 3 C 2 T x -HIL nanofluid achieves full-spectrum absorption at an ultralow mass fraction of 0.02 wt%, demonstrating rapid heat generation kinetics. The system attained an equilibrium temperature of 79.0 °C with a peak solar-thermal conversion efficiency of 91.2 % under 1 Sun irradiation. Additionally, the material exhibits exceptional cycling stability and water evaporation performance, showing promising application potential for seawater desalination and biomedical fields.
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产品关联
DOI
高影响因子
Materials
·
2025
·Vol. 18
·期 8
·1889
·
IF 3.2
Xinyu Liu,Xing Zhao,Hongda Qiu,Weida Liang,Linlin Liu,Yunyu Sun,Lingling Zhao,Xiao Wang,Hongze Liang
The development of antibiotic-independent antimicrobial materials is critical for addressing bacterial resistance to conventional antibiotics. Currently, there is a lack of comprehensive understanding of ionic liquid-modified composites in antimicrobial applications. Here, we innovatively prepared GO-based composites modified with phosphonate ionic liquids via a series of surface functionalizations. The resulting antibacterial composites exhibit significant broad-spectrum activity against both Gram-negative and Gram-positive bacteria, including drug-resistant strains, with stronger efficacy against Gram-negative species. Additionally, the material features excellent long-term reusability and the ability to inhibit/destroy biofilms, which is vital for combating persistent infections. Mechanistic studies reveal its antibacterial effects through multiple pathways: disrupting bacterial membranes, inducing ROS, and inactivating intracellular substances—mechanisms less likely to promote resistance. Overall, these phosphonate ionic liquid-modified polycationic materials demonstrate substantial potential in treating bacterial infections, offering a promising strategy to tackle antibiotic resistance challenges.
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产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）