SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Shuo Du,Xiaofu Guo,Jinlong Li,Mengmeng Sun,Yingjie Liu,Qing Ye,Jingtao Bi,Shizhao Wang,Fei Li,Jie Liu,Yeling Zheng,Yingying Zhao
The development of ionic liquids (ILs)-based extractants for the solvent extraction of rare earth elements (REEs) is of great importance but still faces challenges. Based on the molecular structure and thermodynamic characteristics of temperature-responsive ILs (TRILs), a design method for TRILs was developed with the COSMO-SAC solvation model and quantum chemical calculations. A novel dicarboxylate TRILs, 1,6-bis(carboxyethyl)-N,N,N’,N’-tetramethyl-1,6-hexanediamine bis(trifluoromethanesulfonyl)imide ([CM-TMHDA][Tf 2 N] 2 ) was successfully synthesized, along with dihydroxy TRILs 1,6-Bis(hydroxyethyl)-N,N,N’,N’-tetramethyl-1,6-hexanediaminium bis(trifluoromethanesulfonyl)imide ([HE-TMHDA][Tf 2 N] 2 ) and diester TRILs 1,6-Bis(ethyl acetate)-N,N,N’,N’-tetramethyl-1,6-hexanediaminium bis(trifluoromethanesulfonyl)imide ([EA-TMHDA][Tf 2 N] 2 ) reported in literatures. By combining experimental and molecular simulation analyses, the phase behavior of [CM-TMHDA][Tf 2 N] 2 and the effects of acids and inorganic salts on its phase behavior were systematically studied. Additionally, a temperature-controlled phase transition system composed of TRILs and aqueous solutions was developed for the extraction and separation of Nd(III) from aqueous solutions. The results indicated that the homogeneous extraction system constructed with TRILs reduced interfacial mass transfer resistance, significantly enhancing the extraction kinetics of Nd(III). Various experimental parameters were optimized, revealing that under the conditions of 80 °C for 30 min, the carboxylic functionalized IL achieved optimal extraction efficiency for Nd(III), reaching 56 %. After four cycles, the extraction performance of [CM-TMHDA][Tf 2 N] 2 maintained. This study provides new insights for improving the separation and extraction techniques of REEs, demonstrating substantial potential for applications in this field.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2020
·
IF 7.183
Yitan Wang,Li Chen,Yongsheng Yan,Ji Chen,Jiangdong Dai,Xiaohui Dai
Adjacent rare earth separation has always been one of the hardest separation tasks around world. In this article, a task-specific ionic liquid Cyphos IL 104 embedded polymer inclusion membrane (PIM) was fabricated to realize the adsorption and separation of adjacent heavy rare earth elements Lutetium (III) and Ytterbium (III). Chemical composition of the PIM was verified by attenuated total reflectance Fourier transformed infrared spectroscopy and X-ray photoelectron spectroscopy. And results confirmed only P O and P–O groups participated in the formation of Rare Earth (III)-Cyphos IL 104 complex. A typical thumb-like asymmetric structure was observed by scanning electron microscopy. And the addition of Cyphos IL 104 promoted the hydrophilicity of the PIM as the water contact angle became smaller. Static adsorption and dynamic transport performances were studied in details to get the optimum separation condition. The permeability coefficients of Yb(III) and Lu(III) were 156 μm s −1 and 114.82 μm s −1 , respectively; And the initial membrane fluxes were 90.17 μm m −2 s −1 and 65.61 μm m −2 s −1 , respectively. The separation factor between Yb(III) and Lu(III) was calculated as 1.37 under the optimized transport condition. All these would provide promising developments of adjacent heavy rare earth separation with an efficient and practical membrane strategy.
研究领域:
化学工程
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材料科学
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DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Zhonghai Tang,Yunlan Chen,Changyong Cai,Shaoping Ma,Zhijian Tan
The extraction of Rosa roxburghii polysaccharides using conventional methods suffers from low extraction efficiency and poor selectivity. Recently, green and efficient methods of polysaccharide extraction have received increasing attention. In this study, a CO 2 -responsive ionic liquid (IL) was developed for the extraction of Rosa roxburghii polysaccharides. This IL can achieve efficient extraction, and can be recycled, and reused in the extraction process. The maximum polysaccharide extraction yield of the IL was 253 mg/g under optimal single-factor experiment conditions. Three fractionated polysaccharides, RTFP-1, RTFP-2, and RTFP-3, were obtained by further purification, and their preliminary structures were characterized. RTFP-2 and RTFP-3 showed higher antioxidant and hypoglycemic activities than RTFP-1. This IL maintains high extraction efficiency after 5 cycles and reuse. This extraction method based on a CO 2 -responsive IL provides an efficient and sustainable method for polysaccharide extraction.
研究领域:
植物学
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生物化学
·
绿色化学
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产品关联
DOI
PubMed
高影响因子
TALANTA
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2013
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IF 3.498
Qun Zeng,Yuzhi Wang,Na Li,Xiu Huang,Xueqin Ding,Xiao Lin,Songyun Huang,Xiaojie Liu
Eight kinds of green ionic liquids were synthesized, and an ionic liquid aqueous two-phase system (ILATPS) based on 1,1,3,3-tetramethylguandine acrylate (TMGA) guanidine ionic liquid was first time studied for the extraction of proteins. Single factor experiments proved that the extraction efficiency of bovine serum albumin (BSA) was influenced by the mass of IL, K 2 HPO 4 and BSA, also related to the separation time and temperature. The optimum conditions were determined through orthogonal experiment by the five factors described above. The results showed that under the optimum conditions, the extraction efficiency could reach up to 99.6243%. The relative standard deviations (RSD) of extraction efficiencies in precision experiment, repeatability experiment and stability experiment were 0.8156% ( n =5), 1.6173% ( n =5) and 1.6292% ( n =5), respectively. UV–vis and FT-IR spectra confirmed that there were no chemical interactions between BSA and ionic liquid in the extraction process, and the conformation of the protein was not changed after extraction. The conductivity, DLS and TEM were combined to investigate the microstructure of the top phase and the possible mechanism for the extraction. The results showed that hydrophobic interaction, hydrogen bonding interaction and the salt out effect played important roles in the transferring process, and the aggregation and embrace phenomenon was the main driving force for the separation. All these results proved that guanidine ionic liquid-based ATPSs have the potential to offer new possibility in the extraction of proteins.
研究领域:
生物化学
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蛋白质工程
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DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2014
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IF 4.086
Bencai Lin,Hui Shang,Fuqiang Chu,Yurong Ren,Ningyi Yuan,Baoping Jia,Shuai Zhang,Xiaomin Yu,Yingqiang Wei,Jianning Ding
Ionic liquid-tethered graphene oxide (IL-GO) are prepared by tethering 1-(3-aminopropyl)-3-methylimi-dazolium bromide to graphene oxide (GO), and followed by anion-exchange with bis(trifluoromethanesulfonyl)imide ions (TFSI − ). Environmental friendly ionic liquid-based composite electrolyte for dye sensitized solar cells (DSSCs) without volatile organic solvents is prepared from IL-GO and 1-propyl-3-methylimidazolium iodide (PMII). Incorporation of proper amount of IL-GO significantly increased the conductivity of the electrolyte, the open circuit voltage, the short circuit current density and the conversion efficiency of DSSCs. The dye-sensitized solar cells (DSSCs) containing 4 wt% of IL-GO composite electrolytes show an overall power conversion efficiency of 7.04% under simulated AM 1.5 solar spectrum irradiation at 100 mW cm −2 . These results indicate that the DSSCs based on IL-GO/IL composite electrolytes could overcome the drawbacks of volatile liquid electrolytes , and offer a feasible method to fabricate DSSCs in future practical applications.
研究领域:
材料科学
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能源技术
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产品关联
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
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2023
·
IF 5.2
Feng Wang,Wei Hu,Sheli Zhang,Chunyan Zhu,Yunchang Fan,Qiang Wang
In the present work, a two-phase system composed of a hydrophobic ionic liquid (IL) containing copper ions (Cu(II)) and water containing organic linkers was constructed and the Cu-based metal-organic framework (Cu-MOF) formed at the IL-water interfaces at room temperature. The IL 1,3-bis(carboxymethyl)imidazolium chloride ([BCMIM]Cl) was also introduced in the MOF structures via using it as co-linker. The adsorption capacity of the synthesized Cu-MOF and [BCMIM]Cl modified Cu-MOFs was evaluated using the organic dye Congo red (CR) as target compound. Experimental results suggested that the incorporation of [BCMIM]Cl in the Cu-MOF remarkably improved the CR adsorption capacity due to the strong π-π and electrostatic interactions between the cation of [BCMIM]Cl and CR. The adsorption behavior of CR on [BCMIM]Cl modified Cu-MOF fitted well with pseudo-second-order kinetics and Freundlich isotherm model. Thermodynamic analysis suggested the adsorption of CR on [BCMIM]Cl modified Cu-MOF was a physical adsorption process . Finally, compared with reported adsorbents, the [BCMIM]Cl modified Cu-MOF exhibited higher CR adsorption capacity, indicating that it was a promising adsorbent for the removal of organic dyes from water.
研究领域:
材料科学
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环境化学
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化学工程
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DOI
高影响因子
RSC Advances
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2015
·Vol. 5
·期 70
·57216-57222
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IF 3.84
Bencai Lin,Tianying Feng,Fuqiang Chu,Shuai Zhang,Ningyi Yuan,Gang Qiao,Jianning Ding
Poly(ionic liquid)/ionic liquid/graphene oxide (poly(IL)/IL/GO) composite gel electrolytes containing poly(1-butyl-3-vinylimidazolium bis(trifluoromethanesulfonyl)imide), 1-propyl-3-methylimidazolium iodide and graphene oxide are prepared for dye-sensitized solar cells (DSSCs), without any volatile organic solvent. The conductivity of the composite electrolyte is significantly increased by adding an appropriate amount of GO, and the DSSCs based on composite electrolytes containing GO show higher power conversion efficiency performance and better long-term stability compared to those without GO. The DSSC based on the composite electrolytes which contain 2 wt% of GO show an overall power conversion efficiency of 4.83% under simulated AM 1.5 solar spectrum irradiation. The superior long-term stability of the DSSCs indicates that this type of composite electrolyte could overcome the drawbacks of volatile liquid electrolytes, and offer a feasible method to fabricate DSSCs in future practical applications.
研究领域:
材料科学
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能源
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太阳能电池
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电化学
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产品关联
DOI
高影响因子
DALTON TRANSACTIONS
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2021
·Vol. 50
·期 45
·16795-16802
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IF 4.39
Su-Yun Zhang,Fangchao Long,Chenxu Kang,Zhengyuan Jin,Ailun Zhao,Huawei Liang,Shuangchen Ruan,Yu-Jia Zeng
γ-phase copper(I) iodide (abbreviated to CuI hereafter) with different morphologies is realized through a one-step redox process from I-containing ionic liquid (IL) or poly(ionic liquid)s (PILs) precursors at room temperature. The phase composition, morphology, and electronic states of the synthesized CuI samples are characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and X-ray photoelectron spectroscopy (XPS). The resulting CuI products exhibit three different types of morphologies, namely nanocrystals, with an average size of 0.8 ± 0.2 μm, nanoplates, with a thickness of 35.8 ± 0.9 nm, and nanoflowers, with petals with a thickness of 12.2 ± 0.8 nm. Moreover, the as-synthesized CuI samples exhibit gradually diminishing bandgaps and improved photocatalysis performance for the photodegradation of rhodamine B (RhB) under visible light irradiation as the thickness decreases. XPS measurements confirm that IL/PILs coupled to the CuI surface, resulting in a further charge transfer between Cu and I. These results conclusively prove that IL/PILs serve as both the reducing agents and assemble as orientation templates in the formation of the CuI nanostructures, and also successfully mediate the functional properties of the samples by changing the surface electronic structures.
研究领域:
材料科学
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化学
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纳米技术
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环境科学
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DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
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2023
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IF 8.4
Yan Cheng,Hongnan Zhu,Shuaijie Li,Min Xu,Tianci Li,Xuemeng Yang,Hongzan Song
Stretchable ionogels are rapidly emerging as ideal materials for the construction of flexible ionotronics and soft machines. However, current ionogels suffer from low stretchability and large hysteresis, existing unstable signals at large deformations, and repetitive actions. Here, we propose a simple strategy based on mixed ionic liquid (IL)-induced phase separation to fabricate highly stretchable, tough, and low-hysteresis ionogels by dissolving poly(vinyl alcohol) (PVA) in IL mixture of 1-allyl-3-methylimidazolium chloride and 1-ethyl-3-methylimidazolium ethyl sulfate. The cross-linking network microstructures with special nanophase separated domains endow the ionogel with a high stretchability (1030%) and toughness (0.21 MJ/m3), which are 4.0 and 13.5 times that of the PVA ionogel synthesized in 1-allyl-3-methylimidazolium chloride with H2SO4. The low mechanical hysteresis characteristic of these ionogels is evidenced by cyclic tensile and compressive stress–strain curves. Moreover, the ultralow PVA content (3–8%) and typical sea-island microstructure endow the ionogel with superior room-temperature ionic conductivities (up to 1.8 mS/cm) and lower activation energies. Importantly, these ionogels show excellent recyclability and reprocessability due to the dissociation and recombination of the acetylated covalent cross-linking with the acidic IL catalyst. Potential applications of these resilient ionogels as flexible strain and pressure sensors for detecting the dynamic deformations under cyclic loading are further demonstrated.
研究领域:
材料科学
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柔性电子
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传感器技术
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DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 7
·526
·
IF 4.3
Wenshuo Pan,Shaojuan Zeng,Jiang Chang,Guilin Li,Wei Zhang,Xiangping Zhang
Recently, low-concentration ammonia (NH3) capture has attracted considerable attention for applications in ammonia–hydrogen fuel cells and confined spaces. The main objective of this study was to develop novel ultramicropore ionic liquid-supported aerogel composites (UILACs), designed to effectively expose the multiple hydrogen bonding sites of the ionic liquid through the constructed ultramicropore structure in order to capture and selectively separate low-concentration NH3. UILACs achieved a maximum NH3capacity of 164.69 mg NH3/g absorbent at 25 °C and 0.10 MPa, which was 3.47 times higher than that of the pure aerogel. In breakthrough experiments with low NH3concentrations (1000–10,000 ppm), UILACs exhibited exceptional NH3/H2and NH3/N2selectivity of 2460 and 10,474, respectively, at 1000 ppm NH3, values which are 31.5 and 22.1 times higher than the pure aerogel. These values significantly exceeded those of aerogels, owing to high hydroxyl ammonium ionic liquid (HAIL) loading, interactions between HAIL and NH3, and ultramicropores, as confirmed by density functional theory (DFT) calculations and isothermal analysis. Furthermore, UILACs maintained stable adsorption performance through ten adsorption–desorption cycles, demonstrating UILACs’ potentials for efficient NH3capture and separation in energy applications.
研究领域:
材料科学
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化学工程
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能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
DESALINATION
·
2023
·
IF 9.9
Jingjun Wang,Hao Zhang,Yan Wang,Dilnur Dilxat,Rukang Tian,Yingxin Tang,Hong Mei,Yunqian Wang,Huiyan Shen,Wei-Hua Li,Yunkun Wang
Nanofiltration membranes hold great potential for water treatment applications, but are susceptible to fouling issues. In this study, we demonstrate the fabrication of NF membranes with high permeability, high rejection, antibiofouling and scaling resistance. The membrane was prepared through interfacial polymerization by doping the aqueous phase with 1-aminoethyl-3-methylimidazolium tetrafluoroborate ionic liquid . The TFC-0.2 membrane exhibited a more open nanoporous structure, resulting in an increased permeability from 5 ± 0.5 L·m −2 ·h −1 ·bar −1 (LMH/Bar) to 11.1 ± 0.4 LMH/Bar, while maintaining a comparable salt rejection performance to the original TFC membrane. Additionally, the TFC-0.2 membrane demonstrated excellent retention performance, with a removal efficiency exceeding 90 % for emerging contaminants such as antibiotics and PFOA. Notably, the TFC-0.2 membrane exhibited significant differences in the rejection of Na 2 SO 4 and CaCl 2 , indicating its strong resistance to gypsum fouling. Furthermore, it is worth highlighting that the TFC-0.2 membrane displayed remarkable antibiofouling performance due to the bactericidal properties of AMIT. This capability allowed for the sterilization of bacteria at the early stage of attachment to the membrane surface , effectively mitigating biofouling. The findings of this study offer a simple yet effective strategy for fabricating high-performance nanofiltration membranes with exceptional antifouling properties.
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DOI
高影响因子
ACS Sensors
·
2026
·
IF 10.9
Zhuoru Huang,Yuzi Zeng,Shiqi Tu,Guohan Zheng,Shichao Tian,Zhejia Li,Ping Wang,Hao Wan
Room-temperature ionic liquids (RTILs), owing to their nonvolatility and excellent electrochemical properties, have emerged as promising alternatives to conventional aqueous electrolytes in electrochemical gas sensors. However, their intrinsic fluidity complicates device packaging and long-term stability, which significantly limits their applications. To overcome these challenges, this study introduced polymeric ionic liquid (PIL) into the ionic liquid (IL), solidifying it to form a robust membrane for miniaturized and high-performance electrochemical gas sensing. The hybrid electrolyte exhibits superior ionic conductivity, thermal stability, and electrochemical performance compared with conventional polymer-based electrolytes. The PIL/IL electrolyte was implemented on two typical planar sensor platforms: screen-printed electrodes for electrolyte formulation optimization and sensing validation, and flexible porous substrates (polyethylene terephthalate and polytetrafluoroethylene) with backside-permeable structures to facilitate gas diffusion and for sensing characterization. With hydrogen as the target analyte, the resulting sensors achieved excellent sensitivity, stability, and rapid response at room temperature. By developing a novel solid-state electrolyte and its integrated electrode architecture, this work establishes a scalable, easily fabricated strategy for high-performance, miniaturized electrochemical gas sensors with broad applicability.
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DOI
高影响因子
危险品化学品经营许可证（带存储）