ELECTROCHIMICA ACTA
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2020
·
IF 6.215
Xianli Song,Haitao Zhang,Danfeng Jiang,Lipeng Yang,Jiahe Zhang,Meng Yao,Xiaoyan Ji,Gongying Wang,Suojiang Zhang
Solid-state batteries , which exhibit characteristics including uniform Li deposition, non-flammability and low interfacial resistance, are desirable for novel energy storage devices. Herein, a self-standing, fireproof and electrochemically stable organic-inorganic composite ionogel electrolyte was carefully designed and prepared by using polymerized ionic liquid (PIL), ionic liquid (IL), lithium bis(trifluoromethanesulfonyl)imide (LiTFSI) and lithium aluminum titanium phosphate (LATP) nanoparticles . The incorporation of LATP nanoparticles into polymer backbone was found to facilitate ionic transport due to the homogenous Li + distribution, which would further boost the ionic conductivity and mechanical properties. In addition, the introduction of IL favored the reduction of interface resistance. Benefiting from the nonflammability, the thermal shrinkage performance of as-prepared electrolyte could stand over a broad operating temperature range. A Li/Li symmetric cell containing optimized PIL-14 wt% LATP could be cycled steadily for over 2000 h at 50 °C. A lithium metal battery containing composite ionogel electrolyte exhibited an outstanding specific capacity of 145 mAh g −1 and 95% capacity retention at 50 °C even after 100 cycles. This study indicates that the co-employment of IL and inorganic nanoparticle is an effective strategy for the construction of organic-inorganic hybrid electrolytes for high-safety solid-state lithium metal batteries (LMBs).
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2019
·
IF 6.361
Wei Cai,Yixin Hu,Ying Pan,Xia Zhou,Fukai Chu,Longfei Han,Xiaowei Mu,Zeyuan Zhuang,Xin Wang,Weiyi Xing
As one of emerging layered nanomaterials, the potential of black phosphorous nanosheets (BP) for fabricating high performance polymer composites was seriously confined by incompatible interface. Herein, interfacial engineering between BP nanosheets and polyurethane (PU) matrix was rationally designed, where employing polymerized ionic liquid as linking bridge between robust BP nanosheets and soft TPU. The ionic liquid (IL) was firstly confined onto the surface of BP nanosheets with the combination of electrostatic-driving self-assembly process and in situ radical polymerization was then performed. The successful preparation of IL-functionalized BP (IL-BP) nanosheets was confirmed by a series of analytic methods, incluing TEM, XPS, FTIR, and so on. The resultant IL-BP nanosheets imparted well mechanical performance and flame retardancy to TPU composites. Compared to the mechanical enhancement reported by other literatures, the break strength of TPU/IL-BP-1.0 was significantly increased by 50%, attributing to strong interfacial regulation of polymerized IL and mechanically robust BP nanosheets, generated by the similar polarity. Meanwhile, significant decreases of 38.2% and 19.7% in peak values of heat release rate and total heat release were achieved for TPU/IL-BP-2.0. With the investigation of combustion residue and pyrolysis products, it was found that a mass of pyrolysis products reacted with IL-BP nanosheets to form mechanically robust protective char and solid products, being no longer used as fuel to support combustion. Meanwhile, the maximum concentration of CO 2 and highly toxic CO of TPU/IL-BP-2.0 were effectively decreased by 36.9% and 26.5%, compared to the pure TPU. Such a design route effectively regulates the interfacial interaction between BP nanosheets and polymer matrix and offers a practical route for preparing high performance materials.
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JOURNAL OF MATERIALS SCIENCE
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2023
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IF 4.5
Yang Meng,Gu Xiaofei,Yan Hongyuan,Tang Baokun,Zhu Tao
Comparison between oxidized hydrogen-substituted graphyne (O-HsGY) and graphene oxide (GO) on adsorption and electrochemical properties were studied as well as the possible mechanisms were discussed on the effects of modification by deep eutectic solvents (DESs)/ionic liquids (ILs) and composition with multi-walled carbon nanotubes oxide (O-MWCNT). And the effects of DESs and ILs for GO and O-HsGY were compared. The electrical conductivity of the modification materials by DESs/ILs were improved and the aggregation of GO was prevented to some extent. The specific surface area and pore size of composite materials were larger, which could provide more active sites for the electrolyte ions and genotoxic impurities for adsorption/desorption and diffusion. Due to the different extent of expanded interlayer space after modification and better dispersity in solution, the GO-related materials have better adsorption and electrochemical capacitance properties compared with O-HsGY-related materials. There was much inductive affection of groups in DES3 which can effectively inhibit the stacking of GO sheets. And DES3-GO showed good adsorption performance for three types of aniline genotoxic impurities with the adsorption performance of 12.21 mg g −1 , 8.11 mg g −1 and 15.98 mg g −1 by static adsorption experiment, respectively. The larger surface area and pore size were obtained for the composites modified by IL and the oxidation of GO was reduced to a greater extent which improved the conductivity of GO. And the specific capacitance of 130.57 F g −1 was obtained for IL2-GO/O-MWCNT at the current density of 1.5 A g −1 . Graphical Abstract
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2023
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IF 8.2
Aowei Lv,Xue Lv,Xiaoyan Xu,Zhu-Bao Shao
Water pollution had exacerbated the global water crisis. Dye effluents posed a serious threat to the environment and human health, so there was an urgent need to develop sustainable methods to mitigate water pollution. In this work, sodium-based montmorillonite (MMT) was stripped using ionic liquids (ILs) with different chain lengths, and a pAAM/pAA/LMA/MMT@ILs-CS hydrogel adsorbent (MICHA) was prepared. The gel-based adsorbent was used to adsorb typical cationic (methylene blue: MB, rhodamine B : RhB) and anionic (methyl orange: MO, indigo carmine : IC) dyes from wastewater. The maximum adsorption capacities of MI 16 CHA for MB, MO, IC and RhB were 349.6817, 325.415, 316.0142 and 339.8154 mg/g, respectively. The adsorption kinetics and equilibrium data of MI 16 CHA for dyes were in accordance with the pseudo-first order and Langmuir isotherm models. The adsorption mechanism of MI 16 CHA on dyes were based on hydrogen bonding, electrostatic and π-π interaction. Thermodynamic studies showed that the adsorption of dyes on MI 16 CHA was spontaneous and heat-absorbing. The selective experiments demonstrated that MI 16 CHA has a promising application in real industrial conditions. Cyclic adsorption tests demonstrated the excellent recyclability of MI 16 CHA. In addition, MI 16 CHA had excellent antimicrobial and mechanical properties, which endowed the gel adsorbent with anti-pollution and durability.
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MOLECULES
·
2019
·Vol. 24
·期 15
·2758
·
IF 3.06
Xiaodong Huang,Yanan Liu,Huifang Liu,Guangyang Liu,Xiaomin Xu,Lingyun Li,Jun Lv,Zhongxiao Liu,Wenfeng Zhou,Donghui Xu
As persistent organic pollutants, dichlorodiphenyltrichloroethanes (DDTs) and their metabolites pose considerable risks to human health and the environment. Therefore, monitoring DDTs in the environment is essential. Here, we developed a green, simple, and effective magnetic solid-phase extraction (MSPE) method coupled with gas chromatography tandem triple-quadrupole mass spectrometry to determine the DDT content of environmental water samples. A magnetic ionic liquid (IL) adsorbent was developed based on a modified magnetic multiwalled carbon nanotube/zeolitic imidazolate framework-8 (MM/ZIF-8/IL), synthesized by immobilizing the IL on the surface of MM/ZIF-8. We confirmed successful synthesis of MM/ZIF-8/IL by material characterization, and our results suggested that the MM/ZIF-8/IL had a high Brunauer–Emmett–Teller surface area (159.9 m2g−1), good thermostability (<800 °C), and a high degree of superparamagnetism (52.9 emu g−1). Several experimental conditions affecting the MSPE efficiency were optimized. Under the best conditions, good detection linearity was achieved (0.5–500 µg L−1) with determination coefficients ranging from 0.9927 to 0.9971. The lower limits of detection (0.0016–0.0072 µg L−1) also had good precision, having an intraday relative standard deviation (RSD) ≤ 6.5% and an interday RSD ≤ 8.9%. Finally, we used the as-developed method to determine DDT levels in environmental water samples.Keywords:dichlorodiphenyltrichloroethane;magnetic solid phase extraction;zeolitic imidazolate framework;ionic liquid;environmental samples
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Journal of Essential Oil Bearing Plants
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2019
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IF 0.688
Gaoming Lei,Chaoying Song,Haiyu Shi,Yihao Xing,Xue Song,Guojin Liang
Parameter effects and kinetics of ultrasound assisted ionic liquid mediated hydro-distillation (UILHD) were investigated. An ionic liquid 1-ethyl-3-methylimidazolium bromide ([C2C1im]Br) was employed both as a substrate under sonication and as an additive during distillation. Paeonia suffruticosa Andr. ‘Jitsugetsu Nishiki’, a widely cultivated ornamental plant in China, was selected as a case study. The optimal condition of UILHD was [C2C1im]Br concentration of 10 %, ultrasonic power of 400 W and pretreatment duration of 20 min. Under such a condition, the extraction equilibrium could be basically reached at 35 min of distillation. The kinetics obeyed pseudo-first-order equation. Calculated values of maximum essential oil yield and first-order rate constant were 1.53 g and 0.117 min-1, respectively. The main essential oil components of flowers of P. suffruticosa Andr. ‘Jitsugetsu Nishiki’ were 1,3,5-trimethoxybenzene (16.6 %), tricosane (8.7 %), nerol (8.6 %), nonadecane (6.4 %) and nonanal (5.5 %). The most abundant chemical class was non-terpene hydrocarbons (44.6 %) followed by non-terpene oxygenated compounds (31.2 %) and oxygenated terpenes (22.2 %). UILHD proved to be a promising technique for efficient isolation of essential oils.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2018
·Vol. 20
·期 12
·8077-8087
·
IF 3.906
Lan Ma,Peiyi Wu
Well-defined poly(N-isopropylacrylamide)/poly(tributylhexylphosphonium 3-sulfopropylmethacrylate) (PNIPAM/P[P4,4,4,6][MC3S]) interpenetrating polymer network (IPN) microgels were synthesized by two-step precipitation polymerization, and the thermally induced phase transition mechanism of IPN microgels was investigated using dynamic light scattering (DLS), temperature-dependent IR spectroscopy together with the perturbation correlation moving window (PCMW) technique and two dimensional correlation spectroscopy (2Dcos). For comparison, PNIPAM/P[P4,4,4,6][MC3S] polymer mixture was also studied to reveal the influence of the complex spatial network of IPN on the thermoresponsive behavior. Due to the strong hydrophilic feature of P[P4,4,4,6][MC3S] and the special IPN structure, PNIPAM and P[P4,4,4,6][MC3S] moieties exhibited different phase transition tendencies during heating. In detail, the dehydration behavior of the PNIPAM part seemed gradual and continuous, whereas that of ester CO in the P[P4,4,4,6][MC3S] part became sharp. The two components dehydrated independently and successively in the polymer mixture without any mutual interaction. The collapse of the P[P4,4,4,6][MC3S] network at the second transition stage increased the amount of intramolecular hydrogen bonding (amide CO⋯D–N) in the PNIPAM moiety. Additionally, the electrostatic interaction in the P[P4,4,4,6][MC3S] network played a non-ignorable role in enhancing the swelling property of PNIPAM/P[P4,4,4,6][MC3S] IPN microgels.
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INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2018
·
IF 4.229
Hang Jia,Xin Chen,Chun-Yan Liu,Xue-Jian Liu,Xiu-Cheng Zheng,Xin-Xin Guan,Pu Liu
The novel graphene oxide-ionic liquid grafted chitosan composites (denoted as GO-ILCS) are firstly prepared via a self-assembly process. Then, they are used to anchor ultrafine palladium nanoparticles by the in-situ reduction of palladium chloride with sodium borohydride. The resultant Pd(0)/GO-ILCS organic-inorganic hybrid catalysts are characterized by various techniques and used to catalyze the hydrolytic dehydrogenation of ammonia borane (NH 3 BH 3 , AB) under ambient conditions. The results reveal that the palladium nanoparticles are highly dispersed on GO-ILCS and the Pd(0)/GO-ILCS catalysts exhibit high catalytic activity and excellent reusability in the reaction. The turnover frequency (TOF) is as high as 25.6 mo l H 2 ·mo l Pd -1 ·mi n -1 and the catalytic activity does not decrease obviously after six runs. The orders of palladium and AB concentrations are 1.00 and 0.33 in the catalytic reaction , respectively. Notably, the activation energy of the reaction (Ea = 38 kJ mol −1 ) over the resultant catalysts is obviously lower than most of the palladium-based catalysts reported previously. It is expected the Pd(0)/GO-ILCS catalysts are of exciting potential in the field of hydrogen energy .
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JOURNAL OF CHROMATOGRAPHY A
·
2013
·
IF 4.612
Zhanqi Gao,Yuehua Deng,Xiaobin Hu,Shaogui Yang,Cheng Sun,Huan He
A simple, low-cost and sensitive method for determining organophosphate esters (OPEs) in water samples has been developed based on headspace solid-phase microextraction (SPME) followed by gas chromatography-flame photometric detector. The ionic liquid (1-allyl-3-methylimidazolium tetrafluoroborate, [AMIM][BF 4 ])-based coating was developed by sol–gel technology and employed for extracting analytes. The prepared coating performed stably at high temperatures (up to 335 °C) and with a range of solvents. It can be used at least 200 times without an obvious decrease in extraction efficiency. The extraction capability of the new fiber was much higher than polydimethylsiloxane (PDMS), polydimethylsiloxane/divinylbenzene (PDMS/DVB) and polyacrylate (PA) fibers. The experimental parameters that influenced the extraction efficiency, including extraction time, extraction temperature, stirring rate and ionic strength were investigated and optimized. Under the optimal conditions, the method detection limits (S/N = 3) were in the range of 0.7–12 ng L −1 , and the limits of quantification (S/N = 10) were between 1.0 and 28 ng L −1 . The repeatability of a single fiber varied from 3.3 to 7.6% (intra-day precision, n = 6) and 4.3 to 8.9% (inter-day precision, n = 6). The reproducibility of fiber-to-fiber ( n = 6) was in the range of 3.1–9.4%. The proposed method was applied successfully for the determination of OPEs in lake water, wastewater, sewage treatment plant effluent, and tap water with recoveries varying from 75.2 to 101.8%. The results demonstrate that the proposed method is highly effective for analyzing OPEs in water samples.
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ELECTROCHIMICA ACTA
·
2013
·
IF 3.777
Xuemin Chen,Tongqing Ren,Ming Ma,Zhengguo Wang,Guoqing Zhan,Chunya Li
Using carboxylic acid-functionalized single walled carbon nanotubes (SWCNTs-COO − ) as an anion and 3-butyl-1-[3-( N -pyrrolyl)propyl]imidazolium as a cation, a novel SWCNTs-COO-ionic liquid (SWCNTs-COO-IL) nanocomposite was fabricated successfully. The as-prepared SWCNTs-COO-IL nanocomposite was confirmed with transmission electron microscopy, X-ray photoelectron spectroscopy, UV–vis, FTIR and Raman spectroscopy. The SWCNTs-COO-IL nanocomposite was coated onto a glassy carbon electrode surface followed by cyclic voltammetric scanning to fabricate a SWCNTs/poly{3-butyl-1-[3-( N -pyrrolyl)propyl] imidazolium ionic liquid} composite film modified electrode (SWCNTs/Poly-IL/GCE). Scanning electron microscope and electrochemical impedance spectroscopy were used to characterize SWCNTs/Poly-IL/GCE. Electrochemical behaviors of bisphenol A (BPA) at the SWCNTs/Poly-IL/GCE were investigated thoroughly. It was found that an obvious oxidation peak appeared without reduction peak in the reverse scanning, indicating an irreversible electrochemical process. The oxidation peak currents of BPA were linearly related to scan rate in the range of 20–300 mV s −1 , suggesting an adsorption controlled process rather than a diffusion controlled process. Differential pulse voltammetry was employed for the voltammetric sensing of BPA. Experimental conditions such as film thickness, pH value, accumulation potential and time that influence the analytical performance of the SWCNTs/Poly-IL/GCE were optimized. Under optimal conditions, the oxidation peak current was linearly related to BPA concentration in the range of 5.0 × 10 −9 to 3.0 × 10 −5 mol L −1 with a detection limit of 1.0 × 10 −9 mol L −1 ( S / N = 3). The developed method was successfully employed for the determination of BPA leaching from plastic drinking bottle.
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JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Haidong Jia,Han Jia,Yi Lu,Xiaowei Li,Chunping Guo,Chuanqi Li,Zhihao Shen,Pingan Pei,Han Sun,Kaihe Lv,Pan Huang
A novel ammonium-derived dihydroxyl ionic liquid ([C 16 DPOA]Br) and a control ionic liquid ([C 16 DPA]Br) are synthesized to reveal the effect of dihydroxyl and head groups on their inhibition property via the weight-loss method, surface analysis, electrochemical measurements, and adsorption isotherm studies. [C 16 DPOA]Br exhibits the optimal inhibition ability (93.47 %) for mild steel in 1 M HCl in contrast to [C 16 DPA]Br (88.03 %) and the traditional cationic surfactant CTAB (92.34 %). Based on the experimental results, it can be inferred that the short alkyl chain (propyl) impedes the tight alignment of [C 16 DPA]Br on the metal surface and the interactions between hydroxyl and iron atoms enable [C 16 DPOA]Br to overcome the negative effects of the short alkyl chain on the inhibition property. Finally, molecular electrostatic potential (MEP) distribution and molecular dynamics (MD) simulation verify the reactive sites and adsorption capacity of corrosion inhibitors from the microscopic scale, which further confirms the proposed mechanism. This study focuses on the significance of dihydroxyl and head groups on the inhibition property and provides unique insights into the development of efficient ionic liquid corrosion inhibitors.
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MICROCHEMICAL JOURNAL
·
2025
·
IF 5.1
Zongkui Qin,Tian Lei,Nengxiang Wu,Xinxiang Shu,Leilei Liu,Zhijian Tan
Developing efficient methods for separating and purifying citrus flavonoids is challenging. This work explored a temperature-responsive composite membrane using poly(ionic liquid) (PIL), polyvinylidene fluoride (PVDF), and metal–organic frameworks (MOFs), enabling selective separation of flavonoid glycosides (naringin and neohesperidin) and aglycones (naringenin and hesperetin). A PIL containing temperature-responsive monomer of N-isopropylacrylamide (NIPAM), was doped into the PVDF matrix, and zeolitic imidazolate framework-8 (ZIF-8) was anchored on the PIL/PVDF membrane surface via in-situ synthesis, forming a stable structure. Their porosity, hydrophobicity, thermal stability, and mechanical strength were confirmed. When the temperature increased from 30 to 35 °C, the membrane pore size significantly expanded due to the contraction effect of NIPAM, resulting in an increase in the water flux of the four composite membranes by more than 27.8 %. Furthermore, five experimental variables, including the molar ratio of PIL monomer, temperature, feed concentration, feed pH, and NaCl concentration were selected to systematically evaluate the separation performance of the composite membrane for four citrus flavonoids. The results demonstrated that the composite membrane containing both ZIF-8 and PIL exhibited significantly higher separation efficiency compared to pure PVDF and PIL/PVDF membranes. Among them, the M4 membrane performed the best, achieving a total rejection rate of 307.35 % and a separation selectivity of 47.77 % for the four flavonoids at 25 °C. The composite membrane could be regenerated using an alkaline solution (pH = 11), with a total recovery rate of 312.13 % for the four flavonoids, including a recovery rate of 95.39 % for naringenin. Although the membrane structure remained intact after five reuse cycles, the rejection rate showed a decline. This composite membrane is a promising candidate material that can efficiently and selectively separate flavonoid glycosides and aglycones and offers a reference for the separation of other plant active components.
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危险品化学品经营许可证（带存储）