ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 25
·2112991
·
IF 19.924
Jiangning Li,Xianghuan Meng,Zhiheng Wu,Yanyan Duan,Ruxin Guo,Weidong Xiao,Yongshang Zhang,Yukun Li,Yonglong Shen,Wei Zhang,Guosheng Shao
Lead-free Cs 2 AgBiBr 6 double perovskite has received widespread attention because of its non-toxicity and high thermal stability. However, intrinsic bromide ion (Br – ) migration limits continuous operation of Cs 2 AgBiBr 6 -based perovskite solar cells (PSCs). Herein, an operational and simple strategy is carried out to improve the power conversion efficiency (PCE) and long-term stability of Cs 2 AgBiBr 6 -based PSCs by introducing 1-butyl-1-methylpyrrolidinium chloride (BMPyrCl) and 1-butyl-3-methylpyridinium chloride (BMPyCl) ionic liquids (ILs). The higher binding energy between Br – in Cs 2 AgBiBr 6 and cation in IL containing pyrrole can inhibit Br – migration effectively, thereby reducing film defects and improving energy level matching. The optimized PCE of 2.22% is obtained for hole transport layer-free, carbon-based PSC, which hardly degrades at 40% ± 5% relative humidity and 25 °C for 40 days. This work highlights an effective method to mitigate the halide migration in Cs 2 AgBiBr 6 perovskite, thus providing an effective route in promoting the development of lead-free double PSCs.
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DOI
高影响因子
Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Zhang Tianhao,Tian Yuan,Zhang Chong,Yan Tingting,Yan Hanwen,Zhang Guoliang,Li Jie,Li Zengxi,Wang Gang,Li Chunshan,Zhang Suojiang
Electronic properties of active sites profoundly influence catalytic production of value-added chemicals; however, rational description and modulation is still a significant challenge. Herein, we propose an effective metal-ion-chelation strategy guided by density functional theory prediction and in situ Raman observation to structurally tailor and quantitatively correlate the electronic properties of active sites in ionic liquid. Comprehensive characterizations and theoretical calculations, in combination with electronic properties–performance correlations, reveal the electronic peculiarity of nitrogen and oxygen centers can be controllably restructured for remarkable improvement of catalytic performance at near-ambient condition. The turnover frequency is increased by two folds with deactivation rate suppressed by more than one half, while the kilogram-scaled recycling pilot achieves similar performance for the probe methacrolein synthesis. This strategy further exhibits excellent applicability and tolerance in other substrates with representative functional groups. Our work expresses the significance of electronic properties and provides a valid regulation approach for ionic liquid catalysis.
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产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2026
·Vol. 16
·期 9
·7844-7853
·
IF 6.1
Yufan Wang,Yue Wang,Li Qin,Zhuo Zhang,Yang Yu
The incorporation of microstructural designs into flexible sensors has emerged as a potent strategy to enhance the capability of capturing fine information. Herein, an ionic liquid microemulsion-template strategy is presented to fabricate conductive heterogels with a bicontinuous structure of interpenetrating hydrophilic and hydrophobic phases, in which the hydrophilic ionic liquid domain functions as ion-rich channels and provides conductivity. The hydrophobic polymer domain serves as a supporting skeleton. Amphiphilic zwitterions anchored at the phase interface serve as effective ion transport sites to improve ion conduction. The bicontinuous structure enhances the mechanical performance, anti-swelling, thermal stability and ion conductivity of the heterogels. The assembled flexible sensor exhibits the sensitive detection of subtle muscle movements and specific recognition of speech, weight and temperature. This study is expected to provide innovative insights into the design and regulation of ion channels in flexible sensing devices.
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产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2026
·
IF 4.3
Mengjing Feng,Zhigang Lei,Chengmin Gui
The dissolution mechanism of the poorly water-soluble drugs ibuprofen and aspirin in ionic liquids (ILs) was investigated by experiment, quantum chemical calculations, and molecular dynamic simulations. A comprehensive screening of 420 IL candidates was conducted using the COSMO-RS model, resulting in the selection of three cations ([EMIM] + , [HMIM] + , [P 4441 ] + ) and three anions ([TFA] − , [N(CN) 2 ] − , [CH 3 SO 4 ] − ) based on their viscosity and drug solubility. After evaluating solubility, viscosity, and cost, [EMIM][TFA] was identified as the optimal solvent. In this system, the [TFA] − forms hydrogen bonds with the drug molecules, while the [EMIM] + primarily participates in van der Waals (vdW) interactions. The solubility of ibuprofen and aspirin in [EMIM][TFA] reaches as high as 544.93 mg/mL and 387.29 mg/mL, respectively, at 323.15 K. Atoms in molecules analysis suggests that hydrogen bonding between the three anions and the drug facilitates drug solubilization; in addition, although individual vdW interactions are weak, the multisite vdW interactions between the three cations and the drug molecules exhibit significant synergy, resulting in an overall enhancement of the solubilization. Overall, drug solubilization in ILs is primarily driven by hydrogen bonding with anions and vdW interactions with cations, presenting a novel strategy for designing green and efficient drug carriers.
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DOI
高影响因子
Applied Sciences-Basel
·
2020
·Vol. 10
·期 10
·3625
·
IF 2.474
Feng Feng,Yanxia Sun,Jiayao Rui,Lu Yu,Jiamei Liu,Ning Zhang,Mingxing Zhao,Linwei Wei,Chunshan Lu,Jia Zhao,Qunfeng Zhang,Xiaonian Li
Featured ApplicationThis work can be applied to the recovery of precious metals in WEEE and waste catalyst.The extraction of precious metals is of significant importance for recycling valuable precious metal resources, however, most of the current methods for extraction are inefficient, energy-intensive, or environmentally unfriendly. Herein, we report a new chemical dissolution system for precious metals employing the trichloroisocyanuric acid (TCCA) as an oxidant and tributyl monomethyl ammonium chloride (N4441Cl) as a complexant. The leaching yield was achieving 100 wt% for the metals of Au, Pd, Cu, and Ag at 25 °C, and the average dissolution rate of gold was reaching 375 mg/h, 107.1 times higher than that of traditional cyanide method. Based on the analysis of UV-Vis and XPS results, a possible reaction mechanism was proposed: the precious metals were probably oxidized by TCCA, then the formed precious metal ions coordinate with N4441Cl strongly to promote the dissolution process. Applied to gold dissolution from ores, waste electronic and electrical equipment (WEEE) and waste catalysts, the leaching yield of the TCCA-N4441Cl coordinative composite reached 97, 100, and 100 wt%, respectively, demonstrating that this method is not only efficient and environmentally friendly, but also with great adaptability and high potential for real applications.
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DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2024
·
IF 3.7
Xiangyi Kong,Jie Cheng,Wei Meng,Shujing Han,Zhen Song,Zhiwen Qi
As a volatile organic compound (VOC), styrene can pose significant risks to human health and environment if released into the air without proper treatment. Absorption based on ionic liquids (ILs) has been widely regarded as a promising VOC treatment approach, whereas there is limited research on capturing styrene by ILs. In this work, a multilevel framework was proposed to screen IL absorbents from the largest number of cation-anion combinations in the latest COSMObase. The COSMO-RS model is applied to estimate the absorption and desorption potentials of all IL candidates for styrene capture based on solubility prediction, while important physical properties of them namely melting point, viscosity, and toxicity are estimated by a recently-reported deep learning model. A parallel screening specific to the commercially available ILs in the initial candidate database was also performed. The top-ranked three ILs, identified in both scenarios with and without limiting the commercially availability, were further evaluated in a simulated absorption-desorption process in Aspen Plus. The most promising ILs in each scenario were figured out, which vividly demonstrates the value of discovering novel ILs.
研究领域:
环境化学
·
化学工程
·
绿色溶剂
·
计算化学
·
大气污染控制
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DOI
高影响因子
IONICS
·
2018
·Vol. 25
·期 1
·241-251
·
IF 2.347
Wen Xinge,Dong Tao,Liu Ao,Zheng Shuohang,Chen Shimou,Han Yifan,Zhang Suojiang
As a polymer host, one polymeric ionic liquid poly(methyl methacrylate-1-vinyl-3-ethyl-imidazolium bis(trifluoromethylsulfonyl) imide) (abbr. P(MMA-co-VEImTFSI)) was successfully synthesized and characterized. Four poly(vinylidene fluoride-co-hexafluoropropylene) (abbr. PVDF-HFP)-based polymer electrolytes were prepared by blending 0, 5,15, and 25 wt% P(MMA-co-VEImTFSI). The electrochemical performances of the prepared electrolytes were studied carefully. The results revealed that increasing the polymeric ionic liquid content, the ionic conductivity of the polymer electrolytes could be enhanced and it obeyed the Arrhenius rule. The highest ionic conductivity of the polymer electrolytes was up to 2.09 × 10 −3 S cm −1 at room temperature. The polymer with 25 wt% polymeric ionic liquid showed an excellent electrochemical performance for supercapacitor electrolyte. After 2000 cycles, the retention of capacitance in P(MMA-co-VEImTFSI)-based polymer electrolyte was above 80%. It implied that the present P(MMA-co-VEImTFSI) polymeric ionic liquid was a decent component candidate in the high-performance polymer electrolytes.
研究领域:
材料科学
·
电化学
·
高分子化学
·
能源存储
·
功能材料
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DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Xin Zheng,Fang Huang,Lihui Chen,Liulian Huang,Shilin Cao,Xiaojuan Ma
Three ionic liquids (ILs) with increasing dissolution power, 1-butyl-3-methylimidazolium chloride ([Bmim][Cl]), 1-allyl-3-methylimidazolium chloride ([Amim][Cl]), and 1-ethyl-3-methylimidazolium acetate ([Emim][Ac]), were selected for cellulose dissolution and film preparation through regeneration. The physical properties of the films were investigated, and the correlation between the IL used and the film properties was evaluated. The results indicated that the superior cellulose dissolution system, [Emim][Ac], had the most difficult regeneration process (i.e., more time was required for gel formation), followed by [Amim][Cl], and [Bmim][Cl]. On the other hand, the film produced from [Amim][Cl] had the highest crystallinity, transparency, and tensile strength, followed by the films produced from [Bmim][Cl] and [Emim][Ac]. It was inferred that stronger and more ordered molecular arrangements and inter-molecular interactions preferentially occurred during cellulose regeneration from [Amim][Cl] than during cellulose regeneration from [Bmim][Cl] and [Emim][Ac].
研究领域:
高分子科学
·
材料化学
·
纤维素化学
·
绿色溶剂
·
薄膜材料
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DOI
高影响因子
POLYMER
·
2014
·Vol. 55
·期 25
·6504-6512
·
IF 3.766
Jiao-Jiao Yan,He-Lou Xie,Liang Weng,Shuang Yang,Hai-Liang Zhang
The fabrication of ordered structure is very important for the applications of ionic liquid crystalline polymers (ILCPs) or polymerized (ionic liquid crystal) (PILC). In this paper, we reported a facile approach to manipulate the ordered structure of ILCPs through adjusting the length of alkyl spacer. We designed and synthesized a series of ILCPs contained imidazolium , poly(2,5-bis{[ m -(4-butoxy-4′-imidazolium phenyl) m-alkyl] oxy carbonyl} styrene bis (fluoroborate) salts) (denoted as P 4-m −BF 4 , m represents the number of carbon in the alkyl spacers and m = 2, 4, 6, 10) via radical polymerization . Combined differential scanning calorimetry (DSC), polarized light microscopy (PLM), X-ray scattering, and two-dimensional wide-angle X-ray diffraction (2D WAXD), we found that the ordered structure of this ILCPs can transfer from smectic A phase (SmA) to hexagonal columnar ( Φ H ) phase with the increase of spacer. Furthermore, these results were confirmed by reconstructed relative electron density map using fast fourier transform algorithm (FFT). The result revealed that the increase of alkyl spacer would affect the interaction between ions and side chain, and induce the packing of the side chains. It was evident that the alkyl spacer played an important role in the constructing of ordered structure and offered a new method to fabricate different ordered structure of ILCPs.
研究领域:
高分子科学
·
材料化学
·
软物质物理
·
液晶
·
离子液体
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2013
·
IF 0
Huabin Xing,Xu Zhao,Rulong Li,Qiwei Yang,Baogen Su,Zongbi Bao,Yiwen Yang,Qilong Ren
As green and designable solvents, ionic liquids (ILs), have great potential in the separation of olefins and paraffins. The introduction of functional groups into ILs enhances its separation selectivity for olefin to paraffin; however, the absorption capacities of such functionalized ILs obviously decrease due to the strong polarity of the functional group. In this work, we designed a symmetrical dual nitrile-functionalized IL 1,3-dibutyronitrile-imidazolium bis((trifluoromethyl)sulfonyl)imide ([(CP)2im][NTf2]) and determined the solubility of ethylene and ethane at 303.15 K in three ILs: nonfunctionalized 1-butyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide ([Bmim][NTf2]), single-functionalized 1-butyronitrile-3-methylimidazolium bis((trifluoromethyl)sulfonyl)imide ([CPmim][NTf2]), and dual-functionalized [(CP)2im][NTf2]. The experimental results showed that enhanced separation selectivity for ethylene/ethane could be achieved in the symmetrical dual-functionalized [(CP)2im][NTf2] with only a slight reduction of absorption capacity. A COSMO-RS calculation was carried out to understand the underlying dissolution mechanism of ethylene and ethane in ILs and showed that the polarity of the IL and its misfit interaction with gases were the major factors in determining the solubilities of ethylene and ethane in it. In addition, a silver-containing IL was also tested because of its higher absorption capacity for olefins. It was found that the silver-containing IL was superior to any of the common ILs in the separation of ethylene/ethane, particularly [Bmim][NTf2]. A simple equilibrium model was used to describe the absorption of ethylene in the silver-containing IL.
研究领域:
化学工程
·
分离科学
·
绿色溶剂
·
物理化学
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DOI
ACS Applied Nano Materials
·
2019
·
IF 0
Pin Ma,Yanyan Fang,Di Zhang,Hongbo Cheng,Nianqing Fu,Xiaowen Zhou,Shibi Fang,Yuan Lin
As one of the main components of ionic liquid-based composite electrolytes, nanoparticles play a major role in determining the performance of such electrolytes. In this study, four different TiO2-based nanoparticles are introduced into ionic liquid electrolytes to systematically investigate the influence of their conductivities and surface chemistries on the performance of composite electrolytes. Compared with conventional insulating nanoparticles, high-conductivity nanoparticles are free of blocking junctions, and the surface region of the nanoparticles can act as an additional pathway for ionic conduction. Meanwhile, the surface chemistry of the nanoparticle strongly determines the viscosity, network stability, and microscopic morphology of an ionic liquid-based composite electrolyte, thus affecting the ionic conductivity. Therefore, the highest conductivity of 4.29 mS cm–1 is achieved by the ionic liquid-based composite electrolyte with the SC-HC-TiO2 nanoparticle at a weight of 10 wt %, which has high conductivity and rich amino functional groups. DSCs using SC-HC-TiO2 show a high efficiency of 8.12% due to the simultaneous improvement of photocurrent density (Jsc), open-circuit voltage (Voc), and fill factor (FF).
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源材料
·
太阳能电池
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DOI
ChemElectroChem
·
2024
·Vol. 11
·期 4
·e202300684
·
IF 3.5
Yu Gu,Hao-Ning Chen,Wei-Wei Wang,Hao Yan,Jia-Wei Yan,Bing-Wei Mao
Quasi-solid-state electrolytes (QSSEs) based on ionic liquids are recognized as one of the frontrunners of electrolytes for ensuring the safety and high energy density of next-generation lithium batteries. However, the incapacity of such systems to meet the performance demands of batteries is significantly subject to the properties of the electrolyte and the intricacies of related interfacial processes. Recently, we have designed a high-performing pyrrolidinium bis(trifluoromethylsulfonyl)imide (Py 14 TFSI) based QSSE (Py-Gel), with introducing LiBF 4 and LiCl, which served as a system for probing the dynamic Li deposition mechanism. Herein, we focus on understanding the mechanisms of Py-Gel formation and examining the chemistry and structure as well as the properties of the solid-electrolyte interphases (SEIs) formed in the Py-Gel and their influences on Li deposition. Spectroscopic characterizations suggest the existence of a cross-linked structure in Py-Gel, for which multiple intermolecular/intramolecular hydrogen bondings and ionic coulumbic interactions among Py cations, TFSI − anions, and Li salts are responsible. The Py-Gel electrolyte exhibits exceptional electrical properties at room temperature. Different SEIs are prepared in the Py-Gel via electrochemical protocols to elucidate that the synergy between a well-featured electrolyte and an outstanding SEI is vital for stable cycling of Li metal anodes in such a QSSE. Graphical An ionic liquid-based gel electrolyte is developed, showcasing exceptional electrical properties at room temperature. Different SEIs are prepared in this electrolyte via electrochemical protocols to elucidate that the synergy between a well-featured electrolyte and an outstanding solid-electrolyte interphase is vital for stable cycling of Li metal anodes in such system.
研究领域:
材料科学
·
电化学
·
储能
·
电池技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）