Journal of Environmental Chemical Engineering
·
2025
·
IF 7.2
Shuting Zhang,Jianwen Wei,Xuequan Zou,Linlin Geng,Xiaobin Zhou
This work demonstrates a strategic fabrication of high-performance CO 2 adsorbents by impregnating three conventional ionic liquids (ILs: [BMIM][NTf 2 ], [EMIM][NTf 2 ] or [EMIM][SCN]) with a covalent organic framework (COF) for carbon dioxide (CO 2 ) capture under simulated flue gas streams (1 bar, 15 vol% CO 2 , 60 ℃). Through the systematical assessment of the effects of IL structural features (different anions and cations), adding ratios (15–95 wt%), and operational temperatures (30–90 °C), it was shown that the adsorbent modified by [EMIM][SCN] in an appropriate amount (35 wt%) achieves the remarkable CO 2 adsorption capacity (5.273 mmol·g −1 at 60 ℃), representing a 3.7-fold enhancement compared to the original COF (1.419 mmol·g −1 ) due to its optimal combination of small molecular weight, short alkyl chain cation, and high CO 2 affinity anion. FTIR analysis revealed the potential adsorption mechanisms: the amine of COF chemisorbs CO 2 through carbamate formation, while the ILs enhance both chemisorption and physisorption of CO 2 via the thiocyanate nucleophilicity, the [NTf 2 ] - electronic redistribution, and hydrogen bonding of imidazolium, which is dominated by anion. The optimum CO 2 adsorption temperature (45–60 ℃) matches post-desulfurization flue gas conditions in coal-fired plants. With excellent performance and robust stability, these innovative adsorbents show practical potential for CO 2 capture in real post-combustion flue gas scenarios.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Jia-Qi Wu,Qing He,Zhuang-Zhuang Li,Si-Wen Li,Wei Wang,Jian-She Zhao
Lignin, a major component in renewable plant biomass, serves as a potential source of high-value aromatic chemicals. However, efficiently decomposing lignin while maintaining its aromaticity for fossil fuel substitution remains a significant challenge. This study synthesized a [VimAm]Br@POM@AC catalyst, composed of a Keggin-type polyoxometalate (POM) modified by ionic liquid ([VimAm]Br) and supported on activated carbon (AC). The response-surface methodology was applied to explore the catalytic performance of this catalyst in the oxidative depolymerization of lignin β-O-4 model compounds. Under the reaction conditions of 160 °C, 3 mL H 2 O 2 , and 0.4 g catalyst within 8 h, the conversion rate of lignin model compounds reached 83.01 %. The reaction generated diverse aromatic products, with the selectivity of methyl mandelate and methyl benzoate reaching 27.70 % and 59.02 %, respectively. Mechanistic studies revealed that the [VimAm]Br@POM@AC catalyst selectively cleaves C O bonds in β-O-4 dimers, facilitating the formation of aromatic compounds. Moreover, FT-IR spectroscopy and SEM analysis confirmed the good stability of the recovered catalyst. This work achieves efficient directional conversion of lignin model compounds through the design of a multilevel-structured catalyst, precise optimization of reaction conditions, and innovative mechanistic interpretation. It offers a novel strategy with both academic significance and application potential for the high-value utilization of biomass resources.
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JOURNAL OF SEPARATION SCIENCE
·
2025
·Vol. 48
·期 9
·e70265
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IF 2.8
Yingying Zhang,Ruixue Zhang,Xuzhao Yang,Longhuan Wu,Ying Li,Yakun Li,Dan Ping,Runyi Liu,Daming Wu,Xintong Jiang
The extraction of bioactive compounds from natural plants has received considerable attention, with deep eutectic solvents (DESs) being considered as a novel kind of green solvent in the extraction processes. To extract bioactive ingredients from natural plants, a series of DESs was synthesized by combining a newly Gemini ionic liquid (IL), C 3 (MIM) 2 Br 2 with ethylene glycol (EG) in various molar ratios (1:3, 1:4, 1:5, and 1:6). The structure of the C 3 (MIM) 2 Br 2 /EG(1:6) system was characterized using Fourier-transform infrared spectroscopy, as well as 1 H and 13 C nuclear magnetic resonance spectroscopy. The synthesized DESs were employed for the ultrasonic-assisted extraction (UAE) of flavonoids from Lycium barbarum L., and the flavonoid was quantified using ultraviolet-visible spectroscopy. Key process parameters, including extraction time, temperature, and solid-liquid ratio, were optimized through single-factor analysis and L 9 (3 3 ) orthogonal array experiments. The results demonstrated optimal extraction conditions as follows: extraction time of 40 min, extraction temperature of 50°C, and a solid-liquid ratio of 1/50 (g/mL) (the ratio of the mass of the solid material to the volume of the liquid as the extract, g/mL). Statistical analysis revealed that extraction temperature and extraction time had both probability values less than 0.05, indicating a significant impact on the extraction rate, and the extraction yield of flavonoids reached 17.94 mg/g, exceeding that achieved with 60% ethanol. The Gemini IL-based DESs exhibited distinct advantages in flavonoid extraction compared to traditional organic solvents. Additionally, the mechanisms underlying UAE using DESs were investigated through thermogravimetric analysis and scanning electron microscopy. The findings indicate that ultrasonically-assisted incorporation of Gemini ILs holds promise for advancing the extraction of bioactive substances.
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Nature Catalysis
·
2025
·
IF 44.6
Xing Chuanwang,Mao Chengliang,Wang Shenghua,Zhou Yuxuan,Wu Lei,Zhang Dake,Kang Dingxuan,Yang Di,Gong Weiting,Wei Wendong,Wang Liang,Li Chaoran,Ozin Geoffrey A.,Yang Deren,Sun Wei
The accumulation of plastic waste has become a global issue. Socially and industrially viable, sustainable technical solutions are therefore required. Here we report a solar thermal catalytic system for polyolefins upcycling using copper nanoparticles encapsulated by stacked two-dimensional silicon. In a chloroaluminate ionic liquid solvent, unlike conventional thermal techniques, the upcycling can proceed under a mild temperature (55 °C) created photothermally under 4 sun irradiation. The polyethylene can be completely transformed into distinct and separable fractions of alkanes (C 3 –C 7 ) and cyclic hydrocarbons (C 8 –C 26 ) within hours, with a total yield of 91%. Mechanistic studies show a pathway involved two β-scissions of C–C bonds and a rapid cyclization. The approach offers versatility in the upcycling of various real-world polyolefin waste and features excellent feasibility in outdoor practices. The analyses of a conceptual upcycling facility using this technology showcase its appeal in both economic and eco-friendliness.
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CHEMICAL ENGINEERING JOURNAL
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2013
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IF 3.473
Hejun Gao,Yun Wang,Liqiang Zheng
Hydroxyl-functionalized ionic liquid-based cross-linked polymer is synthesized from 1-hydroxyethyl-3-vinylimidazolium chloride and divinylbenzene. The physicochemical properties of the adsorbent are investigated by scanning electron microscopy, thermogravimetric analysis , and Fourier transform infrared spectroscopy . The adsorption capacity of the novel cross-linked polymer with respect to anionic azo dyes is investigated using a batch adsorption procedure and the kinetics and thermodynamics of the adsorption process are further investigated. It is found that the adsorption kinetics is well fitted by a pseudo-second-order model and the adsorption isotherms agree well with the Langmuir model. The maximum adsorption capacity after 5 h at room temperature (25 °C) could reach 2095.80 and 2100.98 mg/g for orange II and sunset yellow FCF, respectively. The adsorption capacity is much better than most of the previously reported adsorbents. The introduction of hydroxyl-functionalized task-specific ionic liquid moieties into cross-linked polymer constitutes a new and efficient kind of adsorbent.
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IONICS
·
2023
·Vol. 29
·期 5
·1803-1812
·
IF 2.8
Lou Ping,Li Long,Wu Yiyun,Yue Lingping,Wang Yao,Tang Shun,Zhang Weixin,Cao Yuancheng
Li–air battery-based solid electrolyte can better protect the lithium anode from the corrosion of other components and effectively block the risk of ignition and explosion caused by the lithium dendrite penetrating the dielectric layer. In this work, Li-containing ionic liquid (Li-IL) is absorbed in NH 2 -MIL-101(Cr) metal–organic frameworks (MOFs) to form a functional filler and further incorporated the filler into polyethylene oxide (PEO) to fabricate composite solid electrolyte (Li-IL@NH 2 -MIL-101(Cr)/PEO). The lithium anode and the air cathode were modified with Li-IL@NH 2 -MIL-101(Cr)/PEO, and the integrated solid-state Li–air batteries were prepared by roller pressing. Taking advantage of nanostructured Li-IL@NH 2 -MIL-101(Cr), fast lithium–ion transportation is achieved in the bulk and across the electrode/electrolyte interface. As a result, the ionic conductivity of the Li-IL@NH 2 -MIL-101(Cr)/PEO reaches 3.1 × 10 –4 S/cm, the Li–air battery using the Li-IL@NH 2 -MIL-101(Cr)/PEO as solid electrolyte exhibited a high specific capacity of 11,682 mAh/g and remarkable cycling stability of 122 cycles.
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CHINESE JOURNAL OF POLYMER SCIENCE
·
2016
·Vol. 34
·期 8
·981-990
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IF 1.811
Wang Jing,Wu Ying,Liu Zheng-ping
A benign approach for efficient preparation of poly(ether sulfone) (PES) ( η
inh = 0.10−0.31 dL⋅g −1 ) has been presented by using ionic liquid (IL)/zwitterion (ZI) as reaction medium. It has been found that the interaction between 4,4′-dihydroxydiphenylsulfone (Bisphenol-S) and ZI at elevated temperatures results in efficient reduction of dehydration time, which is confirmed by TGA curves, melting point of the mixture and FTIR spectra. Furthermore, no agglomeration is observed at dehydration stage, which is attributed to the high solubility of Bisphenol-S dipotassium salt in IL/ZI. This also makes the polymerization temperature (150 °C) much lower than a conventional method (220−300 °C). In order to demonstrate the efficiency of IL/ZI as reaction medium, the polymerization was also performed in sulfolane under the same reaction condition as that in IL/ZI.
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ChemElectroChem
·
2018
·Vol. 5
·期 22
·3368-3372
·
IF 4.446
Baoguo Zhang,Yu Yao,Zhongning Shi,Junli Xu,Zhaowen Wang
Low-temperature electrochemical extraction of active metals from their corresponding chlorides in ionic liquids has long been a scientific challenge, while extraction from oxides is even more difficult. Inspired by previous reports of the electrochemical deposition of various non-active metals from their corresponding oxides in diverse ionic liquids, we demonstrate the successful electrodeposition of active Li on high-purity Al-plate substrates at relatively low temperature (353 K), as confirmed by X-ray diffraction. Furthermore, Al−Li alloy nanosheets can also be obtained on the Al surface by solid-state cathode alloying. The Li source was Li 2 O, which was dissolved in a highly stable Al-containing solvate ionic liquid. The dissolution mechanism and electrodeposition behaviour of Li 2 O were investigated using multinuclear nuclear magnetic resonance spectroscopy, theoretical calculations, and electrochemical techniques. The findings are expected to provide a theoretical basis and method for low-temperature electrochemical extraction of active metals from their oxides. Graphical Active metal extraction : Li 2 O is employed as the precursor for Li extraction and dissolved in an electrochemically stabilized Al-containing solvate ionic liquid. Direct electrochemical deposition of Li from Li 2 O is achieved at a relatively low temperature. Al−Li alloy nanosheets can also be obtained on the Al surface. The dissolution mechanism provides guidance for identifying species with stronger Lewis acidity to combine with other active metal oxides.
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CHEMPHYSCHEM
·
2015
·Vol. 16
·期 18
·3865-3870
·
IF 3.419
Baohua Zhang,Yiguo Xue,Zhimin Xue,Zhonghao Li,Jingcheng Hao
The ionic liquid 1-ethyl-3-methylimidazolium acetate ([EMIM]Ac) is investigated as a solvent for the synthesis of Pd particles. Interestingly, nanosheet-constructed Pd particles could be successfully synthesized in [EMIM]Ac without any additional reducing agent and template under ionothermal conditions. [EMIM]Ac itself works as the solvent, the reducing agent, and the template for the formation of these interesting Pd particles, making this method complementary to the well-known ionic-liquid-precursor approach. Furthermore, [EMIM]Ac can be recycled with no loss of activity for the formation of nanosheet-constructed Pd particles within our studied cycles. Specifically, the nanosheet-constructed Pd particles exhibit superior electrocatalytic activity and stability towards ethanol oxidation and formic acid oxidation compared with commercially available Pd black catalyst, thus demonstrating their promising applications in fuel-cell area. The current approach, thus, presents a green approach towards the synthesis of Pd particles, using only a simple palladium salt and an ionic liquid. Graphical A neat synthesis : A facile green route is proposed for the synthesis of nanosheet-constructed Pd particles in an ionic-liquid solvent without any additional reducing agent and template for efficient electrocatalytic applications.
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FOOD CHEMISTRY
·
2012
·
IF 3.655
Jie-Ping Fan,Jing Cao,Xue-Hong Zhang,Jun-Zhong Huang,Tao Kong,Sheng Tong,Zhe-You Tian,Yan-Long Xie,Rui Xu,Jian-Hang Zhu
Ionic liquid (IL) based ultrasonic assisted extraction (ILUAE) was developed for the effective extraction of puerarin from Radix Puerariae Lobatae (RPL). The ILUAE parameters including the type of ILs, IL concentration, RPL amount, ultrasonic power and time were optimized by single-factor experiment and response surface methodology. Under the optimized experimental conditions, the best results were obtained using RPL amount 0.43 g in 10 mL 1.06 mol L −1 1-butyl-3-methylimidazolium bromide aqueous solution, ultrasonic time 27.43 min and ultrasonic power 480 W. Scanning electron microscope images of RPL samples were obtained to provide visual evidence of the sonication effect. Compared with the conventional ultrasonic assisted extraction and refluent extraction, the proposed ILUAE offered shorter extraction time and remarkable higher efficiencies due to the higher penetration ability and solubility of IL and the cavitation phenomenon produced in the solvent by the passage of an ultrasonic wave, which further supported the suitability of the proposed approach.
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ELECTROCHIMICA ACTA
·
2026
·
IF 5.8
Sa Xue,Yukun Zhang,Xiangyang Liu,Maogang He
Both TFETFE and 2FB enhance Li⁺-anion interaction, increasing AGGs contents. • 2FB promotes Li⁺-anion interaction more effectively than TFETFE, forming more AGGs. • Inorganic-rich SEI and CEI are generated by deep decomposition of anions in PPB. • Li|PPB|LFP full battery displays a capacity retention of 83.6% after 150 cycles. Due to the low viscosity and weak polarity, fluorinated ethers and fluorinated aromatic compounds are widely used as fluorinated diluents in locally concentrated ionic liquid electrolytes (LCILEs) to improve the electrochemical performance of ionic liquid electrolytes (ILEs). However, the extent to which these two types of diluents regulate Li + solvation structure remains unclear. In this work, two LCILEs were designed using 1,1,2,2-tetrafluoroethyl 2,2,2-trifluoroethyl ether (TFETFE) and 1,2-difluorobenzene (2FB) as diluents, denoted as PPT and PPB, respectively. Raman spectroscopy reveals that both TFETFE and 2FB can strengthen the interaction between Li⁺ and anion, thereby promoting the formation of aggregate ion pairs (AGGs). Compared with TFETFE, 2FB exhibits a more pronounced ability to enhance Li⁺-anion interaction, increasing the proportion of AGGs in PPB electrolyte to 42%, which is significantly higher than that in PPT electrolyte (30%). The enriched AGGs facilitates the preferential reduction and deep decomposition of FSI⁻ at the electrode/electrolyte interphase, leading to the formation of inorganic-rich (LiF, Li 3 N, Li 2 S and Li 2 O) solid electrolyte interphase (SEI) and cathode electrolyte interphase (CEI) with the compact and uniform morphologies. Benefiting from the favorable interfacial chemistry, Li||Cu half battery based on PPB electrolyte delivers a high Li plating/stripping Coulombic efficiency (CE) of 98.7% at 1 mA·cm -2 , exceeding that of PPT (98.0%). In addition, the Li||Li symmetric battery exhibits stable cycling for 160 hours at 2 mA·cm -2 . The Li|PPB|LFP full battery further retains 83.6% of its initial capacity after 150 cycles with an average CE of 99.8%, demonstrating superior electrochemical performance. This work provides practical guidance for the rational selection and structural design of diluents for high performance lithium metal battery electrolytes. Download: Download high-res image (231KB) Download: Download full-size image
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JOURNAL OF SEPARATION SCIENCE
·
2026
·Vol. 49
·期 7
·e70470
·
IF 3.6
Hanbing Li,Jie Wang,Yuyang Li,Yaming Li,Lei Yan,Sumei Li,Dayi Zhang,Yixuan Liang,Danyang Li,Xiaowei Wang,Sha Chen
A selective phase for tetracycline antibiotics (TAs) uptake was designed by incorporating [BMIM][PF 6 ]-functionalized ZIF-67-derived carbonaceous material into the diffusive gradients in a thin-films (DGT) device. This material, integrated in the binding gel of DGT (ta-DGT), exhibited specifically strong affinity toward tetracycline (TC), oxytetracycline (OTC), and chlortetracycline (CTC), with adsorption capacities of 12.22, 11.81, and 13.78 µg/disc, respectively. The ta-DGT showed preferential uptake of TAs over coexisting antibiotics and organic contaminants, with adsorption ratios above 80% and stable performance over pH 4–9 and ionic strength of 0.001–0.1 M. Mechanistic analysis indicated that π–π electron donor–acceptor interactions and cation–π bonding facilitated the specific targeting of TAs onto ta-DGT. During 7 days of field deployment in a domestic wastewater treatment plant in Beijing, ta-DGT showed 5–40 times higher detectable concentrations than conventional HLB/XAD DGT devices. These results validated its sensitivity, reliability, and feasibility for the selective separation and quantification of TAs in complex aqueous matrices.
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