JOURNAL OF ELECTRONIC MATERIALS
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2021
·Vol. 50
·期 11
·6237-6244
·
IF 1.938
Zhao Guixiang,Meng Yanshuang,Zhang Hongshuai,Duan Mingtao,Zhu Fuliang
The development of lithium–sulfur batteries is limited due to its notorious "shuttle effect". Heteroatoms are introduced to the host materials to absorb the polysulfides and further to alleviate the shuttle effect. Herein, porous carbon (NSPC) was successfully prepared by template method and used as sulfur host material. The results show that NSPC has a high specific surface area (697.19 m 2 g −1 ) and abundant heteroatom doping, which helps to enhance the capture and absorption of polysulfides. The prepared S@NSPC was loaded with 76% sulfur, and the composite electrode displayed excellent cycle stability because of its strong polysulfide absorption. The S@NSPC composite electrode shows high initial specific capacity of 741.8 mAh g −1 at 167.5 mA g −1 , the capacity of the S@NSPC composite electrode remained 609.8 mAh g −1 after 500 cycles, and the attenuation per cycle was only 0.027%, showing good stability.
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高影响因子
LANGMUIR
·
2010
·
IF 3.898
Yao Zhou,Wenshuang Lin,Huixuan Wang,Qingbiao Li,Jiale Huang,Mingming Du,Liqin Lin,Yixian Gao,Ling Lin,Ning He
Biosynthesized gold nanoparticles (GNPs) were transferred from water to a hydrophobic ionic liquid (IL), [Bmim]PF6, with the assistance of alkyl trimethyl ammonium bromide. The phase transfer mechanism was illustrated through the exemplification of cetyltrimethyl ammonium bromide (CTAB). Interaction between GNPs and CTAB was demonstrated through zeta potential analysis. Moreover, an anion-exchange process was discovered between CTAB and IL. During the process, the hydrophobic CTAPF6 formed in situ on the GNPs led to the hydrophobization and thus phase transfer of the GNPs. The phase transfer efficiency was found to be size-dependent.
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JOURNAL OF MOLECULAR LIQUIDS
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2019
·
IF 4.561
Jinmei Lei,Yuxia Gao,Xin Zhao,Yanqiu Zhu,Chenhui Zhang,Yue Ma,Kefei Zhao,Fengpei Du
A new series of ionic liquid-type imidazolium Gemini surfactants, 1,10-(Propane-1,3-diyl-2-ol)bis(3-alkyl-1H-imidazol-3-ium) chloride, were synthesized and investigated for their dilational rheology at the air/water interface using the oscillating drop method. The surface properties and splashing behavior of these ionic liquid-type imidazolium Gemini surfactants were studied at different hydrophobic chain lengths, surfactant concentrations and dilational frequencies. With increasing concentration, increasing intermolecular interaction had a positive effect on the dilational modulus, and the increasing surfactant molecular diffusion exchange had a negative effect on the dilational modulus; thus, the surface dilational modulus demonstrated a maximum value. Furthermore, the surface dilational modulus for 1,10-(Propane-1,3-diyl-2-ol) bis (3-tetradecyl-1H-imidazol-3-ium) chloride is higher than that for the other two short-chain ionic liquid-type imidazolium Gemini surfactants, which is due to an increase in the hydrophobic interaction. The results reveal that the bouncing heights of ionic liquid-type imidazolium Gemini surfactants on a paraffin liquid surface decrease with increasing alkyl chain length. The splashing behavior of ionic liquid-type imidazolium Gemini surfactants observed on liquid surfaces and the spreading behavior observed on a paraffin surface are closely related to the dilational loss modulus . These findings not only reveal the relationship between dilational rheology and splashing behavior but also provide insights for the potential application of ionic liquid-type imidazolium Gemini surfactants in more fields.
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JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Han Jiang,Tao Wang,Shuo Li,Zhi-Ping Zhao
Catalytically active membranes are the core components of the membrane reactors . Polysulfone (PSF) grafted with ionic liquids (ILs), PSF-DG-ILs, was prepared via introducing chloromethyl group into benzene ring of PSF, then grafting ILs, imidazolyl acid ILs ([(CH 2 ) 3 SO 3 HVIm]HSO 4 ), by chemical bonding. Then PSF-DG-ILs membranes were prepared by non-solvent induced phase separation technique for hydrolysis of inulin. The effects of coagulation bath, grafting degree, and various dope blending on structure, physico-chemical characters, and catalytic performance of membranes were evaluated. And results revealed that catalytic performance could be efficiently enhanced by choosing ethanol as coagulation compared with ethyl acetate, which was mainly attributed to surface segregation. Membrane mechanical strength decreased with the enhancing ILs grafting degree, while the catalytic performance increased. However, PSF-DG-ILs with high degree of ILs grafting lost its membrane-forming property. The mechanical and catalytic properties of the membrane were synergistically enhanced by blending PSF-DG-ILs polymers with high and low ILs grafting degree, then the resulting membranes broke the trade-off effect between mechanical strength and catalytic ability. Specifically, membrane fabricated by mixing the polymers with ILs grafting degree of 0.31 and 0.59 integrates optimized mechanical property and catalysis performance. The strength and strain of this blending membrane are 3.17 MPa and 14.10%. The average pore size and porosity are 215.5 nm and 46.2%. The yield of inulin hydrolysis can reach 88.22% with 20 wt% concentration of inulin at 75 °C using a flux of 23.4 L/(m 2 ·h). Therefore, the PSF-DG-ILs membrane displayed promising potential for the application in biomass conversion .
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Journal of the Taiwan Institute of Chemical Engineers
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2018
·
IF 3.849
Hao Chen,Shuang Wang,Jinsheng Li,Fengxiang Liu,Xue Tian,Xu Wang,Tiejun Mao,Jingmei Xu,Zhe Wang
A series of cross-linked composite membranes based on polybenzimidazole (PBI) and polymeric ionic liquids (PILs) containing imidazole rings have been successfully prepared. The obtained PIL consisted of polymeric cation PBI-BuI and anion BF 4 − . Here, a concept of dual proton transfer channels was proposed, in which the anions of PIL served as proton receptor through electrostatic interaction and the imidazole rings accepted protons by acid-base effect simultaneously. In order to obtain proton exchange membranes based on PBI/PIL with excellent comprehensive properties, the cross-linkerγ-(2, 3-epoxypropoxy) propyltrimethoxysilane (KH560) is introduced into the matrix to strengthen the mechanical properties by hydrolyzing into Si–O–Si network structure. The composite membranes display excellent mechanical properties, oxidative and thermal stability. In particular, the cPBI-BF 4 -40 membranes with the highest content of PIL shows a proton conductivity of 0.117 S cm −1 at 170 °C and it is good enough both in mechanical and PA uptake, which will make an outstanding candidate over other PBI-based membranes for high temperature proton exchange membrane fuel cell (HT-PEMFC) applications.
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JOURNAL OF CHROMATOGRAPHY A
·
2011
·
IF 4.194
Xin Zhou,Peng-fei Xie,Jiang Wang,Bei-bei Zhang,Ming-ming Liu,Han-lan Liu,Xiong-han Feng
A novel crown ether functionalized ionic liquid (IL), 1-allyl-3-(6′-oxo-benzo-15-crown-5 hexyl) imidazolium hexafluorophosphate was synthesized and used as selective stationary phase to prepare task-specific IL-based solid phase microextraction (SPME) fibers by sol–gel method and free radical cross-linking technology. The underlying mechanism of the sol–gel reaction was proposed and the successful chemical bonding of the crown ether functionalized IL to the formed hybrid organic–inorganic copolymer coating was confirmed by FT-IR spectroscopy. The performance of this in situ created crown ether functionalized IL-based SPME fibers, was investigated in detail. The coating has porous surface structure, stable performance in high temperature (to 340 °C) and in different solutions (water, organic solvent, acid and alkali), and good coating preparation reproducibility. In contrast to the sol–gel derived 1-allyl-3-methyl imidazolium hexafluorophosphate-based coating prepared in our previous work with the identical procedure, the extraction performance of this newly developed sol–gel crown ether functionalized IL-based coating was superior for alcohols, phthalate esters , phenolic environmental estrogens, fatty acids and aromatic amines due to the introduction of benzo-15-crown-5 functional group in IL structure. Moreover, it was shown to provide higher or comparable extraction efficiencies for most analytes studied than did the commercial PDMS , PDMS/DVB and PA fibers.
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2021
·
IF 7.312
Qi Zhang,Siru Ren,Ang Li,Jing Zhang,Song Xue,Xiaodong Sun
Ionic liquids (ILs) have proven to be a promising alternative to traditional chiral selectors in chiral capillary electrophoresis (CE). However, the number of IL-type chiral selectors currently available is quite limited and their types of structure are generally restricted to tetraalkylammonium salts. In this work, six tartaric acid (TT)-based ILs (TTILs) were designed containing different cation species, including di-1-butyl-3-methylimidazolium-L-tartrate ([BMIM] 2 -L-TT), di-1-butyl-pyridinium-L-tartrate ([BPY] 2 -L-TT), di-tetrabutylphosphonium-L-tartrate ([TBP] 2 -L-TT), di-choline-L-tartrate ([CHO] 2 -L-TT), di-1-butyl-1-methylpiperidinium-L-tartrate ([BMPIP] 2 -L-TT), and di-1-butyl-1-methylpyrrolidinium-L-tartrate ([BMPYR] 2 -L-TT). These novel IL-type chiral selectors were successfully synthesized and applied to the enantioseparation of ten amino alcohols in CE . Under selected CE conditions (60 mM TTILs, 150 mM boric acid in 80–90% methanol, pH 4.5), [BMPIP] 2 -L-TT showed the best chiral separation performance, followed by [BMPYR] 2 -L-TT and [TBP] 2 -L-TT. Most amino alcohols were resolved with enantioresolutions (Rs) above 4.0. The enantioselectivity demonstrated by [CHO] 2 -L-TT was relatively moderate (Rs ranging from 1.50 to 4.50), but it proved that the suppression of electroosmotic flow (EOF) is not the main contribution of TTILs to chiral CE. The enantioselectivities of [BMIM] 2 -L-TT and [BPY] 2 -L-TT were also shown to be satisfactory but their interference with UV detection is a negative factor in CE application. To the best of the authors’ knowledge, this is the first time that the influence of various achiral cation species of IL-type chiral selectors on CE enantioseparations has been systematically evaluated. Since there has been controversy regarding the true role of chiral ILs in CE enantioseparations, the parallel comparison of these TTILs in this work clearly shows that their cations are able to participate in the enantiorecognition process by introducing steric hindrance effect, rather than merely influencing the EOF in the separation systems.
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高影响因子
TALANTA
·
2023
·
IF 6.1
Shuang Li,Yu Zhang,Mengdi Guo,Zhibin Yi,Mengna Hu,Chunhong Xiong,Ganhui Huang,Jinsheng Zhang
Electrochemical sensors show distinct advantages over other types of sensors in the rapid detection of microorganisms. Here, we attempted to construct a label-free electrochemical immunosensor based on an Fe 3 O 4 –ionic liquid (IL)-modified electrode to rapidly detect Salmonella in milk. The excellent ionic conductivity of the IL facilitated sensor construction, and the large surface area of nano-Fe 3 O 4 provided numerous sites for subsequent experiments. An antibody was fixed on the Fe 3 O 4 –IL complex with polyglutamic acid modification by a simple infusion method. The microstructure of the Fe 3 O 4 –IL composites was investigated by scanning electron microscopy, and the elements and structures of the composites were analyzed by energy dispersive X-ray and Fourier transform infrared spectroscopy. Under optimized experimental conditions, the detection range of the constructed sensor was 3.65 × 10 2 –3.65 × 10 8 CFU mL −1 , and the LOD was 1.12 × 10 2 CFU mL −1 (S/N = 3). In addition, the prepared electrochemical immunosensor is convenient for detecting foodborne pathogens because of its outstanding stability, good selectivity, and repeatability.
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ChemistrySelect
·
2024
·Vol. 9
·期 38
·e202402768
·
IF 1.9
Guangfei Qu,Yun Zhang,Junyan Li,Zhishuncheng Li
Graphical Electrochemically catalyzed ionic liquid technology facilitates lignin cleavage at 230 °C, with vanillin yields reaching 88.54 % at 3 V and guaiacol yields at 48.24 % at 4 V, showcasing enhanced productivity in lignin-derived compounds. Significant attention has been devoted to using biomass as a renewable resource to address the energy crisis and mitigate environmental pollution. Biomass, a potential substitute for fossil fuels, contains a substantial amount of lignin, ranging from 10 % to 25 %. Hence, it is crucial to research lignin depolymerization. In this study, the use of electrochemically catalyzed ionic liquids enabled the cracking of lignin at low temperatures. Specifically, by applying a low voltage at 230 °C, the controlled generation of vanillin and guaiacol was achieved. The concentration of vanillin in the depolymerized lignin reached 88.54 % under 3 V conditions. Similarly, it is presumed that the yield of guaiacol at 4 V is 48.24 %. These findings have significant implications for the targeted management of lignin depolymerization byproducts. Ultimately, this project establishes a framework for the high-value utilization of biomass and provides new perspectives on addressing the energy problem and environmental degradation.
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Science Advances
·
2020
·Vol. 6
·期 45
·
IF 13.117
Xiaoyu Lv,Kaihong Chen,Guiling Shi,Wenjun Lin,Hongzhen Bai,Haoran Li,Guping Tang,Congmin Wang
Developing ionic liquid (IL) drugs broaden new horizons in pharmaceuticals. The tunable nature endows ILs with capacity to delivery active ingredients. However, the tunability is limited to screen ionic components, and none realizes the kinetic tuning of drug release, which is a key challenge in the design of IL drugs. Here, a series of ILs are developed using biocompatible ionic components, which realizes absorption of gaseous NO to yield IL-NONOates. These IL-NONOates serve as HNO donors to release active ingredient. The release kinetics can be tuned through configuring the geometric construction of ILs (release half-lives, 4.2 to 1061 min). Mechanism research indicates that the tunability depends on the strength of intramolecular hydrogen bond. Furthermore, the IL-based HNO donors exert pharmacological potential to inhibit tumor progression by regulating intratumoral redox state. Coupled with biosafety, these IL-based HNO donors with facile preparation and tunable functionalization can be promising candidates for pharmaceutical application.
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JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2016
·Vol. 163
·期 13
·D682
·
IF 3.014
Shuojian Su,Yanna NuLi,Nan Wang,Dilinuer Yusipu,Jun Yang,JiuLin Wang
The electrolytes containing halide-free inorganic magnesium salt Mg(BH4)2 dissolved in ether solvents have shown reversible Mg deposition-dissolution performance. Herein, we improved the anodic stability of the electrolytes on non-inert stainless-steel electrode by mixing PP14TFSI ionic liquid with tetraglyme (TG) and dimethoxyethane (DME) ether solvents. The effect of mixing ratios and salt concentrations on the electrochemical behavior of the electrolyte were investigated. High anodic stability, good ionic conductivity, excellent cycling efficiency, feasibility of the preparation and good compatibility toward Mo6S8 and TiO2 insertion cathode make the electrolytes promising for the potential application in rechargeable magnesium batteries.
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高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Wen Ren,Di Wu,Yanna NuLi,Xuan Zhang,Jun Yang,Jiulin Wang
The electrolyte based on magnesium bis(diisopropyl)amide (MBA), a low-cost and non-nucleophilic organic magnesium salt, is proposed to be an admirable alternative for rechargeable magnesium batteries but suffers from limited ionic conductivity and an inferior electrochemical window in the commonly used ether solvents. In this work, the 1-butyl-1-methylpiperidinium bis(trifluoromethyl sulfonyl)imide (PP14TFSI) ionic liquid as the cosolvent of tetrahydrofuran (THF) in chlorine-free MBA-based electrolytes has been first demonstrated to remarkably improve the ionic conductivity and broaden the oxidative stable potential (2.2 V vs Mg/Mg2+) on stainless steel. Reversible Mg electrochemical plating/stripping with a low overpotential below 200 mV and ca. 90% Coulombic efficiency are obtained. The current density of Mg plating/stripping is increased 238 times after the addition of PP14TFSI, where the mechanism of competitive coordination of TFSI– making an easier Mg plating/stripping is proposed theoretically. The MBA-2AlF3 electrolyte with a ratio-optimized THF/PP14TFSI cosolvent exhibits good compatibility with the Mo6S8 cathode. Furthermore, the Se@pPAN|Mg full cell exhibits an initial capacity of 447.8 mAh g–1 and as low as ∼0.66% capacity decay per cycle for more than 70 cycles at 0.2 C with the synergy of LiTFSI additives. The facile modification strategy of ionic liquid in the MBA-based electrolyte sheds inspiring light on exploring non-nucleophilic and chlorine-free electrolytes for practical rechargeable magnesium batteries.
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高影响因子
危险品化学品经营许可证（带存储）