ACS Sustainable Chemistry & Engineering
·
2022
·
IF 9.224
Xinlin Zhu,Zhao Fang,Qinghua Deng,Yang Zhou,Xiaolong Fu,Lizhi Wu,Wuwei Yan,Yong Yang
PEO-based solid electrolytes are eagerly anticipated for being explored in batteries with remarkable performance. Their narrower electrochemical window and weak mechanical strength, however, limit the potential for wide application in safe and high-capacity electronic devices. Herein, a self-healing solid-state electrolyte (PEO@BPIL) is fabricated by the incorporation of an imidazolium-based polymerized ionic liquid (poly(ethylene glycol) monomethacrylate (PEGMA)) block polymer into PEO, and the influence of copolymer configuration on electrochemical performances of the system is investigated in-depth. In addition to reducing the crystallinity of PEO, an inimitable orderly and orderless microphase separation structure is introduced in PEO@BPIL, which brings about a “green fast track” for Li-ion migration. This contributes to a lithium-ion transference number of 0.63 that is an unsurpassed level. The electrochemical stability window of the optimized PEO@BPIL can achieve 5.0 V (vs Li+/Li). As a result, the capacity and endurance discharge performances for PEO@BPIL based cells are significantly improved. Moreover, the bountiful charged ions on the scaffold endue the electrolyte with generous interactions, conferring the PEO@BPIL predominant adhesiveness toward lithium metal (the hanging weight = 200 g) and standout self-healing ability (recovering time <30 min, 60 °C). The restriction toward lithium dendrite is thus enhanced. The PEO@BPIL-based laminate polymer battery presents ascendant antifolding deformation ability and still exhibits good electrochemical performances after reiterative damage. In combination with the high flame retardancy of polymerized ionic liquid, this work affords a splendid idea for an emerging power supply battery.
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DOI
高影响因子
TALANTA
·
2015
·
IF 3.545
Meseret Amde,Jing-Fu Liu,Zhi-Qiang Tan,Deribachew Bekana
Zinc oxide nanofluid (ZnO-NF) based vortex assisted liquid liquid microextraction (ZnO-NF VA-LLME) was developed and employed in extraction of inorganic mercury (Hg 2+ ) in environmental water samples, followed by cold vapor atomic fluorescence spectrometry (CV-AFS). Unlike other dispersive liquid liquid microextraction techniques, ZnO-NF VA-LLME is free of volatile organic solvents and dispersive solvent consumption. Analytical signals were obtained without back-extraction from the ZnO-NF phase prior to CV-AFS determination. Some essential parameters of the ZnO-NF VA-LLME and cold vapor generation such as composition and volume of the nanofluid, vortexing time, pH of the sample solution, amount of the chelating agent, ionic strength and matrix interferences have been studied. Under optimal conditions, efficient extraction of 1 ng/mL of Hg 2+ in 10 mL of sample solution was achieved using 50 μL of ZnO-NF. The enrichment factor before dilution, detection limits and limits of quantification of the method were about 190, 0.019 and 0.064 ng/mL, respectively. The intra and inter days relative standard deviations (n=8) were found to be 4.6% and 7.8%, respectively, at 1 ng/mL spiking level. The accuracy of the current method was also evaluated by the analysis of certified reference materials, and the measured Hg 2+ concentration of GBW08603 (9.6 ng/mL) and GBW(E)080392 (8.9 ng/mL) agreed well with their certified value (10 ng/mL). The method was applied to the analysis of Hg 2+ in effluent, influent, lake and river water samples, with recoveries in the range of 79.8–92.8% and 83.6–106.1% at 1 ng/mL and 5 ng/mL spiking levels, respectively. Overall, ZnO-NF VA-LLME is fast, simple, cost-effective and environmentally friendly and it can be employed for efficient enrichment of the analyte from various water samples.
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高影响因子
CATALYSIS TODAY
·
2024
·
IF 5.2
Gongheng Zhang,Fengxiang Yin,Gideon Kofie,Qiuyue Gao,Jie Zhang,Guoru Li,Biaohua Chen
ZIF-67(CoFe) was synthesized using the solvothermal method , and the precursor of ZIF-67(CoFe)/xC-yIL was obtained by grinding the mixture of ZIF-67(CoFe), [BMIM][NTf 2 ] ionic liquid (IL), and carbon black. A series of ZIF-67(CoFe)/xC-yIL-T catalysts were prepared by calcining the precursor at different temperatures. The structure of the catalysts was examined using XRD , TEM, BET and XPS analysis. The results show that the high-temperature treatment of the precursor contributes to the formation of the structure of the N, S-co-doped carbon-coated nanoparticles . The introduction of ionic liquid increases the specific surface area of the catalysts and exposes more active sites. At the same time, as a sulfur source, ionic liquid forms a C-S bond, which is conducive to improving ORR activity. The optimal ORR half-wave potential and limited current density of ZIF-67(CoFe)/1.5 C-45IL-600 are 0.87 V vs. RHE and 4.64 mA cm -2 , respectively, in 0.1 mol L −1 KOH.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Bo Hu,Wei Wei,Fengxia Liu,Xiaofei Xu,Zhiyi Li,Zhijun Liu
To achieve superior regeneration properties of the CO 2 -rich phase without additional auxiliary measures in biphasic CO 2 absorbents (e.g., N 2 purging or co-activators), a dual-functionalized ionic liquid biphasic solvent of N-Aminoethylpiperazine-Lysine/N-Propanol/water ([AEPH][Lys]/NPA/H 2 O) was designed for CO 2 capture. It demonstrates a remarkable CO 2 loading of 1.847 mol·mol −1 , while the rich volume being only 53.0 % of the total absorbent and the viscosity as low as 6.10 mPa·s. Remarkably, 87.26 % regeneration efficiency was achieved under 393.15 K for 40 min without additives, and the regenerated lower phase could homogeneously recombine with the upper phase. After 10 cycles, regeneration efficiency remained at 84.67 %, while energy consumption was only 1.90 GJ·ton -1 CO 2 (49.87 % lower than MEA). 13 C NMR revealed that bicarbonate/carbonate dominated the CO 2 products, as well as some carbamates and a small amount of propyl carbonates. The reaction pathways of bicarbonates/carbonate based on quantum chemical calculations were indicated that through base-catalyzed hydration of tertiary amines on AEPH + cations, hydrolysis of carbamates and the reaction of water with CO 2 . The bicarbonate/carbonate exhibits lower thermal stability than carbamates, facilitating efficient regeneration. Based on MPI index, solvation-free energy and weak intermolecular interactions analysis, the solubility of CO 2 products in water is higher than NPA. This absorbent demonstrates significant potential for industrial CO 2 capture applications.
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高影响因子
ULTRASONICS SONOCHEMISTRY
·
2024
·
IF 8.7
Junping Wang,Hongyi Zhao,Xuexue Xue,Yutong Han,Xin Wang,Zunlai Sheng
Lycopene-rich guava ( Psidium guajava L.) exhibits significant economic potential as a functional food ingredient, making it highly valuable for the pharmaceutical and agro-food industries. However, there is a need to enhance the extraction methods of lycopene to fully exploit its beneficial uses. In this study, we evaluated various ionic liquids to identify the most effective one for extracting lycopene from guava. Among thirteen ionic liquids with varying carbon chains or anions, 1-butyl-3-methylimidazolium chloride demonstrated the highest productivity. Subsequently, a single-factor experiment was employed to test the impact of several parameters on the efficiency of lycopene extraction using this selected ionic liquid. These parameters included extraction time, ultrasonic power, liquid-solid ratio, concentration of the ionic liquid, as well as material particle size. Moreover, models of artificial neural networks using genetic algorithms (ANN-GA) and response surface methodology (RSM) were employed to comprehensively assess the first four key parameters. The optimized conditions for ionic liquid ultrasound-assisted extraction (IL-UAE) were determined as follows: 33 min of extraction time, 225 W of ultrasonic power, 22 mL/g of liquid-solid ratio, 3.0 mol/L of IL concentration, and extraction cycles of three. Under these conditions, lycopene production reached an impressive yield of 9.35 ± 0.36 mg/g while offering advantages such as high efficiency, time savings, preservation benefits, and most importantly environmental friendliness.
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DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Qingguo Zhang,Xinyao Tang,Shuangqing Li,Xinyi Ge,Ying Wei,Zheng Xing,Xinyuan Zhang
In the quest for sustainable and environmentally friendly materials, lignin hydrogels have emerged as a revolutionary alternative to traditional synthetic polymers due to their eco-friendliness, low-cost, and biocompatibility. However, the inadequate mechanical properties and poor conductivity limit their applicability in flexible energy storage and electronic devices. This work proposes employing a so called multiple freezing strategy to incorporate lignin/ionic liquid into the dual-cross-linked network of polyvinyl alcohol (PVA) and gelatin (GEL), thereby facilitating the preparation of a multifunctional green composite hydrogel. Through experimental characterizations and theoretical simulations, we elucidated the interactions among the various species. The hydrogen bonds and electrostatic interactions within this hydrogel contribute to its remarkable mechanical properties, high conductivity, and enhanced sensitivity. Leveraging these attributes, we fabricated flexible writing sensors and human motion detection sensors capable of recognizing handwriting and monitoring daily movements. The devices demonstrate excellent stability and anti-fatigue properties, with signal stability maintained after 500 cycles. When utilized as the electrolyte in flexible supercapacitor assembly, the supercapacitor exhibited a specific capacitance of 104.8 F g⁻¹ at a current density of 1 A g⁻¹ , with a capacitance retention rate of 70 % after 5000 cycles. After various degrees of bending and folding, the electrochemical performance remained very stable. This research presents a new candidate materials for environmentally friendly multifunctional hydrogels and paves the way for advancements in flexible energy storage, text recognition, and wearable sensor devices.
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高影响因子
ChemSusChem
·
2018
·Vol. 11
·期 23
·4026-4032
·
IF 7.411
Li Ma,Qiuming Gao,Weiqian Tian,Qiang Zhang,Hong Xiao,Zeyu Li,Hang Zhang,Xuehui Tian
Large-sized reduced graphene oxide prepared was prepared by combined microwave intermittent heating and an extraction process (e.g., 900 W for 10 min (MRG-900-10)) with a lateral size of several micrometers and a thickness of 4–6 monosheets . The MRG-900-10 has a high C/O molar ratio (5.89) and a sp 2 C content of 69.0 %, which leads to a fast electronic transmission in the sample. In addition, MRG-900-10 possesses a large specific surface area of 568.2 m 2 g −1 , which increases the contact surface area between the active material and the electrolyte, thus enhancing the electron and ion transport in the interfaces when used as the electrode material in supercapacitors. MRG-900-10 possesses a low charge-transfer resistance (≈0.36 Ω). Used as the electrode material for a supercapacitor in 6 m KOH aqueous electrolyte, MRG-900-10 produces a high specific capacity of 327.6 F g −1 at the current density of 0.5 A g −1 . A specific capacity of 248.3 F g −1 was obtained at a high current density of 100 A g −1 , which indicated its high-rate ability. The initial capacity of 92 % can be maintained after 40 000 cycles at 5 A g −1 , which indicated its high cycling stability. As for the MRG-900-10 symmetric supercapacitors, the energy densities of 11.0 and 36.2 Wh kg −1 were obtained in 6 m KOH aqueous and 1 m tetraethylammonium tetrafluoroborate ([TEA]BF 4 )/acetonitrile (ACN) electrolytes, respectively. Importantly, a high energy density of 68.6 Wh kg −1 was achieved in the nonflammable ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethane)sulfonimide ([EMIM][TFSI])/ACN (80 vol % [EMIM][TFSI]), and the supercapacitor was effective from room temperature to 100 °C. Graphical Size matters ! A large-sized reduced graphene oxide-based material with a low charge-transfer resistance has been prepared for use as an electrode in an ionic-liquid-based supercapacitor. A supercapacitor using an optimized electrolyte based on the ionic liquid 1-ethyl-3-methylimidazolium bis(trifluoromethane)sulfonimide has a high energy density and is nonflammable and stable at high temperature (see figure).
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高影响因子
SYNTHETIC METALS
·
2011
·
IF 1.871
Lin Cui,Minrong Xu,Jianying Zhu,Shiyun Ai
In the present work, we have developed a novel hydrogen peroxide (H 2 O 2 ) biosensor based on electropolymerization of thiophene-3-boronic acid film (TBA) in ionic liquid via glucosidic bond with glycoprotein horseradish peroxidase (HRP). A thin film of poly (thiophene-3-boronic acid) (PTBA) has been synthesized by electropolymerization using room temperature ionic liquids (RTIL) as the growth medium and the supporting electrolyte. Horseradish peroxidase (HRP) in this study shows affinity interaction with the formed PTBA thin film. With the aid of hydroquinone (H 2 Q) mediator, the biosensor has a fast response of less than 7 s with linear range of 5.0 × 10 −6 to 1.75 × 10 −4 M and a detection limit of 0.5 μM. The developed biosensor exhibits fast response, a low detection limit, high stability and very good reproducibility.
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高影响因子
RSC Advances
·
2017
·Vol. 7
·期 12
·6972-6980
·
IF 3.108
Xiaohui Liu,Qian Zhu,Qiuyan Zhang,Yanguang Zhang,Chen Ding
Over the past few years, ionic liquids (ILs) have been widely reported as reaction media for reverse atom transfer radical polymerization (ATRP). In particular, almost all the ILs with the structure [Hmim][RCOO] (R represents an alkyl group) have been used as ligands for a reverse ATRP system. However, the facile, simple and low-cost ILs, 1-alkyl-3-methylimidazole chloride ([Rmim][Cl]), have rarely been employed as ligands for reverse ATRP. In this article, a [Rmim][Cl] was successfully employed as a ligand for the reverse ATRP of methyl methacrylate with Fe(III) as catalyst and 2,2′-azobisisobutyronitrile as initiator. The key to success is to adjust the FeCl3/[Rmim][Cl] molar ratio value to 1 : 1. The results indicated that the polymerization with [Rmim][Cl] as a ligand proceeded in a controlled/“living” fashion, as evidenced by the first-order kinetic plot, low polydispersity index values, and increase in polymer molecular weight with monomer conversion. The effects of various experimental parameters, including different catalysts, reaction temperatures, solvents, and molar ratios of FeCl3/[Rmim][Cl], on the polymerization were investigated in detail. Furthermore, 1H NMR and gel permeation chromatography analyses confirmed the halogen-containing chain-end functionality of the resultant polymer.
研究领域:
高分子化学
·
有机合成
·
催化化学
·
功能材料
·
可控自由基聚合
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2026
·
IF 4.1
Guan Xinhui,Zhang Yuying,Ma Xiaoqiao,Wang Haiyan,Qiao Xiaoqiang,Gu Xiaofei
Comprehensive characterization of exosomal phospholipids is essential for understanding cancer-associated metabolic alterations and discovering potential biomarkers, but remains challenging due to their extensive structural diversity and the limited selectivity and coverage of conventional liquid chromatography-tandem mass spectrometry (LC-MS/MS) approaches. In this study, an ionic liquid-functionalized styrene-maleic anhydride copolymer brush stationary phase (Sil-BHHICl) was developed and integrated into an offline two-dimensional (2D) LC-MS/MS platform for comprehensive exosomal phospholipid profiling. The Sil-BHHICl stationary phase exhibited a hydrophilic interaction/reversed-phase mixed-mode retention mechanism and provided enhanced selectivity toward phospholipids, enabling efficient separation at both the phospholipid-class and molecular-species levels. The developed analytical platform enabled comprehensive profiling of plasma-derived exosomal phospholipids, resulting in the identification of 274 molecular species belonging to 10 phospholipid classes. Lipidomic analysis of plasma exosomes from breast cancer patients and healthy controls revealed distinct phospholipid alterations associated with breast cancer and identified five candidate biomarkers, among which LysoPC-O (16:0) exhibited the strongest discriminatory ability. Pathway enrichment analysis further indicated that the altered phospholipids were predominantly associated with glycerophospholipid metabolism, suggesting extensive lipid metabolic remodeling in breast cancer. Overall, this study establishes a mixed-mode chromatographic platform for high-coverage exosomal phospholipid profiling and demonstrates its potential for lipidomics-based biomarker discovery and investigation of disease-associated metabolic alterations. Graphical abstract
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高影响因子
RSC Advances
·
2022
·Vol. 12
·期 46
·29915-29927
·
IF 4.036
Sai Ma,Ming Gao,Su Ma,Jun Wang,Yue Sun,Hanyu Wang,Huili Wang,Xuedong Wang
Conventional ionic liquids possess several disadvantages, such as high viscosity, difficult sampling/retrieval, and great loss in aqueous solution, limiting their wide applications in the pretreatment field. To solve these drawbacks, we synthesized a quaternary ammonium polymeric ionic liquid (PIL) and pressed it into an effervescent tablet for developing an effervescence-enhanced dispersive solid-phase extraction method (QAP-EDSE). The pressed effervescent tablet was composed of PIL as an extractant, tartaric acid as an acidic source, NaHCO3 as an alkaline source, and water-soluble starch as a filler, respectively. Under the CO2-driven dispersion, the QAP-EDSE method integrated rapid enrichment, extraction, and dispersion into one synchronous step. Employing the one-factor-at-a-time approach, several important variables were optimized as follows: 200 mg of P[VBTHEA]Cl as sorbent, 400 μL of acetone as elution solvent, 5 min of elution, solution pH 9.0, and 1 : 1.25 molar ratio of alkaline to acidic sources. Combining LC-DAD analysis, this proposed approach offered the limits of detection as low as 0.11–0.31 μg L−1 and satisfactory recoveries of 81.40–102.62% for five sulfonamides (SAs) in environmental waters. The lower relative standard deviations (1.9–6.7%) evidenced the higher intraday and interday experimental precision by this method. Overall, the newly developed method is environmentally benign, time-saving, and easy to operate with low detection limit and high recovery and thus shows excellent prospects in the trace-level detection of SAs in environmental waters.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Ruijing Li,Zhao Fang,Cheng Wang,Xinlin Zhu,Xiaolong Fu,Jiajun Fu,Wuwei Yan,Yong Yang
Solid-state polymer electrolytes (SPEs) with outstanding flexibility and self-healing capacity are appealing for utilization in reliable and wearable electronic devices. Herein, a highly stretchable (extensibility > 1500% and stress > 490 kPa), non-flammable and notch-insensitive intrinsic self-healing SPE based on six-armed poly(N,N,N-trimethyl-N-((2-(dimethylamino)ethyl methacrylate)-7-propyl)-ammonium dual bis(trifluoromethanesulfonyl) imides), imidazole-based ionic liquid (EMIM–TFSI) and LiTFSI is fabricated. The multi-armed structure in combination with the multiple charged center endow the six-armed dicationic polymeric ionic liquid (DPIL-6) with significantly strengthened ionic attractions and Van der Waals' force among the polymer segments, thus conferring the DPIL-6 derived SPE (DPIL-6-SPE) with prominent self-healing ability (recovery time < 2 h, 25 ℃). Moreover, DPIL-6-SPE presents a superior adhesion strength (weight loading > 200 g) towards lithium electrode, signifying excellent interfacial compatibility. Compared with the counterpart of monocationic polymeric ionic liquid derived SPE (MPIL-6-SPE), the multiple cationic center in DPIL-6-SPE facilitates the dissociation of lithium salt and liberates more Li + from trapping with TFSI - , thereby resulting in a superior ionic conductivity (over 10 -5 S cm −1 at room temperature) and lithium ion transference number (0.46). The as-assembled LiFePO 4 /DPIL-6-SPE/Li battery can deliver a high discharge capacity of 152.6 mAh g −1 at 0.1C, and its capacity retention rate reaches 94% after 50 cycles with a coulombic efficiency of 96%. In particular, the mechanical properties and conductivity of DPIL-6-SPE can fully recover after repeated damage, conferring the derived soft-pack battery stable powering capacity upon multi-angle bending and folding. The design of multi-armed and multiple charged PILs provides new avenues for developing flexible electronic devices with self-healing capacity.
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高影响因子
危险品化学品经营许可证（带存储）