Journal of Materials Chemistry C
·
2024
·
IF 5.7
Gangyi Zeng,Guangyao Liu,Tiantian Wang,Lingling Wen,Jiangning Li,Yan Meng,Ziqiu Ren,Xin Li
Triple-cation CsFAMA perovskite solar cells (PSCs) have gained great attention because of their excellent stability. Buried interface management is one of the most effective methods to further improve device performance; however, such a strategy has not been extensively studied in air-processed triple-cation PSCs. Herein, we report an effective management strategy that incorporates ionic liquids (ILs) of 1-butyl-3-methylimidazole hexafluorophosphate (BMIMPF6) to modify the buried interface. The synergistic effect of BMIMPF6 is revealed by employing several characterization methods, including time-of-flight secondary ion mass spectrometry and inductively coupled plasma mass spectrometry. It was found that BMIMPF6 can significantly coordinate with Sn4+ and fill the oxygen vacancy defects from one side of the electron transport layer, and simultaneously bond with uncoordinated Pb2+ from the other side of the perovskite layer, leading to reduced nonradiative recombination losses and enhanced carrier extraction. More importantly, such an IL “bridge” enabled BMIMPF6 to exist at the buried interface, which avoids damage to the passivating layer in the next spin-coating process for achieving the perovskite film. Moreover, BMIMPF6 also penetrates the perovskite film and regulates the crystallinity of perovskite. As a result, the BMIMPF6-modified device fabricated in ambient air without glove boxes or dry rooms delivers a champion power conversion efficiency (PCE) of 21.74%. The unencapsulated device maintains 77.5% of its initial PCE after being stored in ambient air for more than 3500 h. Additionally, the lead leakage rate from the perovskite film is reduced. This work provides a facile and low-cost method to fabricate high-performance all-air-processed PSCs.
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING RESEARCH & DESIGN
·
2025
·
IF 3.9
Xingyu Lin,Hongsheng Lu,Ruoxin Zhang,Yingjiang Chen,Baiwen Huang
Gas channeling during CO 2 flooding presents a significant challenge to the effective underground storage of CO 2 . This study introduces a novel gas channel blocking strategy using the phase transition properties of fatty acid based CO 2 -responsive ionic liquids (ILs). The ILs were synthesized from choline hydroxide (Ch) and high-melting-point fatty acids (FA), including myristic acid (C14) and palmitic acid (C16), named FA-Ch ILs. These ILs demonstrate phase transformation behavior after CO 2 injection, leading to the precipitation of FA as solid particles. The FA-Ch ILs aqueous solution exhibits low viscosity, ensuring excellent injectivity for oilfield applications. After CO 2 injection, the precipitated FA particles act as gas channeling plugging agents, while the protonated Ch ions effectively inhibit clay swelling to enhance oil recovery with a synergistic effect. Structural properties and interaction mechanisms of the FA-Ch system were characterized by FT-IR, 1 H NMR, and molecular dynamics simulations. The particle size of the FA precipitates was regulated by adjusting FA-Ch concentration and CO 2 injection rate to make it suitable as a profile control agent. Furthermore, Ch + ions demonstrate clay swelling inhibition comparable to traditional inhibitors like KCl. This dual-functionality positions FA-Ch ILs as an innovative solution for addressing gas channeling and clay swelling in CO 2 flooding, offering a cost-effective and environmentally friendly alternative to conventional methods.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Xiaolu Yin,Jun Li,Xiaoxia Liu,Kaiqiang Huang,Yanzhao Yang
The recovery of palladium from spent auto-exhaust catalysts (SAE-catalysts) is of great significance for resource sustainability. Herein, we proposed an efficient closed-loop leaching and recovery method for palladium from SAE-catalysts using iodotrihalide ionic liquids (ILs). Recovery design was explored aimed at green leaching and process simplification. Iodotrihalide ILs exhibited exceptional performance in terms of leaching efficiency (99.1%), selectivity (selectivity > 6.8 ×10 3 ) and reusability (over 6 cycles). The mechanism study revealed that excellent leaching performance was attributed to the redox and complexation. Additionally, the chemical reaction-controlled model was best suited to describe the leaching process. Notably, under the optimal conditions determined by the response surface methodology, a high-purity Pd(II) solution (purity > 99.8%) was obtained. More significantly, it was ideal for practical applications due to the low-viscosity (36.0 cP), mild (55 °C) and one-step leaching and recovery. In conclusion, this work provides an eco-friendly method for recovering palladium from SAE-catalysts with its non-high corrosiveness and low environmental impact.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Reaction Kinetics Mechanisms and Catalysis
·
2017
·Vol. 121
·期 2
·579-592
·
IF 1.264
Zhang Hui,Li Yuqi,Lu Zexiang,Wu Mei,Shi Ronghui,Chen Lihui
Five SO 3 H and CF 3 SO 3 H-functionalized ionic liquids (ILs) with different acidity were synthesized. The catalytic performances of various ILs were evaluated for producing biodiesel in the esterification reaction and the yield of biodiesel increased with the increase of ILs’ acid strength. [Bsmim]CF 3 SO 3 was found to be a highly-efficient catalyst for increasing the biodiesel yield due to its greatly enhanced Brønsted acidity, and it was also an environmental friendly solvent for its good recyclability and hydrophilicity. The experimental design and study were carried out by using the response surface methodology (RSM) for optimizing the production process. The optimum biodiesel yield of nearly 99% was achieved at the conditions that the catalyst amount of 11%, the molar ratio of methanol to oleic acid of 9:1, the reaction time of 3 h and the reaction temperature of 62 °C were used. In addition, the catalyst showed an excellent reusability.
✓ 已验证
产品关联
DOI
高影响因子
FUEL
·
2024
·
IF 6.7
Yaya Wang,Qi Zhang,Yingying Man,Xiaobin Wu,Yingchun Yin,Xiufang Liu,Hongbing Song,Xin Jin
Task-specific ionic liquids integrated with multi-active sites display promising potential for use in the cycloaddition reaction of CO 2 and epoxides. Utilizing the functional enhancement strategy, we successfully synthesized a novel range of polyether-bridged amidopyridinium dicationic ionic liquids (PE-PyDILs) via efficient bisamidation and biquaternization reactions. Under relatively mild reaction conditions, PE-PyDILs can catalyze the coupling of CO 2 with various epoxides to produce cyclic carbonates in quantitative yields, demonstrating an enhanced effectiveness and a longer service life compared to previous DILs. At a very low loading of 0.01 mol%, the TON value is as high as 7700. The excellent catalytic performance can be attributed to the intramolecular cooperative activation of epoxides with two amidopyridinium cations bridged by polyether , as supported by the spectroscopic analysis and kinetic studies. This mechanism led to a reduction in activation energy and improved the efficiency of the cycloaddition reaction.
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL RESEARCH
·
2024
·
IF 7.7
Zhipeng Zhang,Huizi Zheng,Ying Liu,Shuang Ma,Qi Feng,Jiao Qu,Xiaolin Zhu
Global outbreaks and the spread of viral diseases in the recent years have led to a rapid increase in the usage of antiviral drugs (ATVs), the residues and metabolites of which are discharged into the natural environment, posing a serious threat to human health. There is an urgent need to develop sensitive and rapid detection tools for multiple ATVs. In this study, we developed a highly sensitive electrochemical sensor comprising a glassy carbon electrode (GCE) modified with graphitized hydroxylated multi-walled carbon nanotubes (G-MWCNT-OH) and 1-butyl-3-methylimidazolium hexafluorophosphate (BMIMPF 6 , IL) for the detection of six ATVs including famciclovir (FCV), remdesivir (REM), favipiravir (FAV), hydroxychloroquine sulfate (HCQ), cepharanthine (CEP) and molnupiravir (MOL). The morphology and structure of the G-MWCNT-OH/IL nanocomposites were characterized comprehensively, and the electroactive surface area and electron conductivity of G-MWCNT-OH/IL/GCE were determined using cyclic voltammetry and electrochemical impedance spectroscopy. The thermodynamic stability and non-covalent interactions between the G-MWCNT-OH and IL were evaluated through quantum chemical simulation calculations, and the mechanism of ATV detection using the G-MWCNT-OH/IL/GCE was thoroughly examined. The detection conditions were optimized to improve the sensitivity and stability of electrochemical sensors. Under the optimal experimental conditions, the G-MWCNT-OH/IL/GCE exhibited excellent electrocatalytic performance and detected the ATVs over a wide concentration range (0.01–120 μM). The limit of detections (LODs) were 42.3 nM, 55.4 nM, 21.9 nM, 15.6 nM, 10.6 nM, and 3.2 nM for FCV, REM, FAV, HCQ, CEP, and MOL, respectively. G-MWCNT-OH/IL/GCE was also highly stable and selective to the ATVs in the presence of multiple interfering analytes. This sensor exhibited great potential for enabling the quantitative detection of multiple ATVs in actual water environment.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Jia Miao,Meifen Huang,Wenlong Sun,Zhehui Weng,Qiong Wu,Tongtong Gui,Qiong Xu,Xiangying Li,Haijun Pang
Sodium-ion batteries (SIBs) have gained increasing attention as a promising alternative to lithium-ion batteries, owing to the abundance and low cost of sodium. However, despite these advantages, the performance of SIBs is hindered by the larger ionic radius of sodium, which not only reduces ion migration rates but also significantly lowers the specific capacity. To address this challenge, the present study explores the synthesis of Na 5 PV 2 Mo 10 O 40 (PV 2 Mo 10 )-modified reduced graphene oxide (rGO) composites by employing imidazole ionic liquid (IL) as electrostatic attraction agent, this approach not only prevents the aggregation of polyoxometalates (POMs) but also increases the interlayer distance of rGO, improving the battery’s specific capacity and enhancing the diffusion rate of Na + ions. Experimental results indicate that the PV 2 Mo 10 -rGO-IL hybrid material exhibits exceptional electrochemical properties, characterized by significantly improved conductivity and an impressive specific capacity of 290mAh g −1 while achieving nearly 100 % Coulombic efficiency over 900 cycles. Furthermore, theoretical calculations reveal that the incorporation of POMs effectively reduces the electrode impedance of rGO and enhances the structural stability of POMs during cycling. This study opens up new avenues for the design of high-performance sodium ion batteries based on POMs.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
·
2024
·
IF 5.3
Xiaogang Shang,Songwei Zhang,Huimin Yang,Songbo Li,Litian Hu
In this study, four types of ionic liquids (ILs) were synthesized and their high-temperature tribological and extreme pressure properties in pentaerythritol ester (PE) oil were systematically evaluated. Compared with commercial additive zinc dialkyl dithiophosphates (ZDDP), ILs markedly improve the load-bearing capacity and high-temperature lubrication performance of PE oil. In particular, 2-n-undecylimidazolium O,O-dioctyl dithiophosphate ([C 11 -IM][C 8 -DDP]) showed the best lubricating effect at high temperature. The tribo-film of worn surface was analyzed by SEM, EDS, XPS and FIB-TEM, and the lubrication mechanism of ILs was systematically studied. Results proved that the tribochemical reactions occurred between ILs and the worn surface, resulting in the formation of a tribo-film consisting of Fe 2 O 3 , FePO 4 , FeS, Fe x (SO 4 ) y and nitrogenous organic compounds.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2024
·
IF 8.1
Xianfeng Guan,Di Yu,Yu Luo,Shuyu Zhang,Wanzhen Wu,Guangpeng Ma,Xinpu Zhou,Cuicui Li,Shuang Wang
Polybenzimidazole (PBI) is commonly used for high-temperature proton exchange membranes. However, it is undeniably challenging for phosphoric acid (PA)-doped PBI membranes to have both high proton conductivity and excellent long-term stability. In this study, a series of polymer ionic liquid composite PBI membranes were fabricated. These membranes are made using two azide-functional ionic liquids and amino-polybenzimidazole, adjusting the amount of the two ionic liquids. The ionic pairs offered by the ionic liquids positively impact the transportation of protons and the stability of PA through the replacement of anions. It is noteworthy that crosslinked amino-polybenzimidazole membranes containing functional polymeric ionic liquids have proton conductivity of up to 131.7 mS cm −1 at 180 °C, and the PA retention after 240 h at 160 °C under humidity-free conditions is 86.5 %. In addition, the membrane is used in membrane electrodes with hydrogen and oxygen at the anode and cathode, respectively, exhibiting a peak power density of 694.6 mW cm −2 at 160 °C. And the voltage decay rate is 0.28 mV h −1 after long-term test. The findings indicate that membranes made of functional polymeric ionic liquids crosslinked with amino-polybenzimidazoleprovide a new strategy to enhance fuel cell durability.
✓ 已验证
产品关联
DOI
高影响因子
TALANTA
·
2024
·
IF 5.6
Gang Li,Yahan Cui,Xiaonan Yang,Xuelian Xin,Hongyuan Yan,Dandan Han
It is extremely significant while challenging to accurately detect low-levels of perfluoroalkyl carboxylic acid compounds (PFCAs) in environmental water. Herein, adopting perfluorotetradecanoic acid as the dummy template, selective molecularly imprinted composites (CNTs@ILs@MIPs) grafted carbon nanotubes integrating hydrophilic ionic liquids were successfully prepared via surface imprinting and dummy-template imprinting techniques. The obtained CNTs@ILs@MIPs were applied as selective extraction adsorbent for specifically extract PFCAs in environmental water coupled with gas chromatography-mass spectrometry quantification. Detailed studies were conducted on the main preparation parameters and extraction conditions. The CNTs@ILs@MIPs displayed excellent adsorptivity , and the established method exhibited low LODs (0.60–1.64 ng L −1 ), wide linearity with R 2 above 0.9994, and satisfactory adsorption recoveries (80.5–112.5%) for seven PFCAs. This proposed method provides a new applicable approach for the detection of targeted pollutants in environmental water by utilizing the high affinity and recognition ability of molecularly imprinted carbon nanotube functional materials modified with ionic liquids.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2018
·Vol. 410
·期 6
·1647-1656
·
IF 3.307
Yang Jiale,Fan Chen,Kong Dandan,Tang Gang,Zhang Wenbing,Dong Hongqiang,Liang You,Wang Deng,Cao Yongsong
Five novel ionic liquids (ILs), 1,3-dibutylimidazolium bromide [BBMIm][Br], 1-pentyl-3-butylimidazolium bromide [BPMIm][Br], 1-hexyl-3-butylimidazolium bromide [BHMIm][Br], 1,1'-(butane-1,4-diyl)bis(3-butylimidazolium) bromide [C 4 (BMIm) 2 ][Br 2 ], and 1,1'-(butane-1,4-diyl)bis(3-methylimidazolium) bromide [C 4 (MIm) 2 ][Br 2 ], were prepared and used in situ to react with bis(trifluoromethane)sulfonamide lithium salt to extract the myclobutanil, tebuconazole, cyproconazole, and prothioconazole from water samples. The results showed that mono-cationic ILs had much better recovery than dicationic ILs, and mono-imidazolium IL bearing butyl groups at N-1 and N-3 sites had the best recovery. When the length of the alkyl substituent group was more than four carbons at N-3 site, the recovery decreased with increase of alkyl chain length of 1-butylimidazolium IL. The extraction efficiency order of triazoles from high to low was [BBMIm][Br], [BPMIm][Br], [BHMIm][Br], [BMIm][Br] (1-butyl-3-methylimidazolium bromide), [C 4 (BMIm) 2 ]Br 2 , [C 4 (MIm) 2 ]Br 2 . An in situ ionic liquid dispersive liquid–liquid microextraction combined with ultrasmall superparamagnetic Fe 3 O 4 was established as a pretreatment method for enrichment of triazole fungicides in water samples by using the synthetic [BBMIm][Br] as the cationic IL and used to detect analytes followed by high-performance liquid chromatography. Under the optimized conditions, the proposed method showed a good linearity within a range of 5–250 μg L −1 , with the determination coefficient ( r 2 ) varying from 0.998 to 0.999. High mean enrichment factors were achieved ranging from 187 to 323, and the recoveries of the target analytes from real water samples at spiking levels of 10.0, 20.0, and 50.0 μg L −1 were between 70.1% and 115.0%. The limits of detection for the analytes were 0.74–1.44 μg L −1 , and the intra-day relative standard deviations varied from 5.23% to 8.65%. The proposed method can be further applied to analyze and monitor pesticides in other related samples.
The scheme of the in-situ DLLME method for the determination of triazoles using the imidazolium-based ionic liquids
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2024
·
IF 2.4
Zhang Jingchun,Wang Qiqi,Chen Haoyuan,Zhang Yilin,Deng Yupei,Wang Ying,Zhao Huimin,Zhu Yu,Wang Guowei,Zhuang Linghua
It is found that ester introduction into imidazolium or pyridinium cations can significantly improve the biodegradability property of ionic liquids and also influence the viscosity and the toxicity of ionic liquids. Ionic liquids based on dicyanamide anion reveal good electrochemical properties. Four chloride and dicyanamide ionic liquids with ester groups were prepared, and the effect of anion and cation structure of ionic liquids on electrical conductivity/electrochemical stability window was discussed from experimental studies and density functional theory (DFT) simulations. The introduction of the ester group in imidazolium cation decreased the refractive index and electrical conductivity, while increasing the electrochemical stability window of ionic liquids. The refractive index, electrical conductivity, and electrochemical stability window values decreased with the increase of the alkyl chain length of the ester group from ethyl to butyl. The refractive index values of chloride imidazolium ionic liquids were higher than those of dicyanamide ionic liquids, while the electrical conductivity and electrochemical stability window values of dicyanamide ionic liquids were much higher than those of chloride ionic liquids. DFT simulations revealed that ester introduction in imidazolium cation decreased the average hydrogen bond length and increased the cation–anion interaction. The average hydrogen bond length of chloride and dicyanamide ionic liquids increased with the increase of the alkyl chain length of the ester group from ethyl to butyl, while the absolute interaction energy (Δ E ) of chlorine and dicyanamide ionic liquids decreased with the increase of the alkyl chain length of the ester group from ethyl to butyl. DFT simulations demonstrated that ionic liquid structure (ester chain length and anion) was closely related to the electrical conductivity and electrochemical stability window properties of ionic liquids. These results will shed light on the design and optimization of functional ionic liquids as electrolytes for renewable energy and energy storage applications.
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）