ADVANCED FUNCTIONAL MATERIALS
·
2024
·Vol. 34
·期 32
·2401607
·
IF 18.5
Shaowei Han,Yongkang Hu,Jia Wei,Songwei Li,Peipei Yang,Haoyang Mi,Chuntai Liu,Changyu Shen
Conductive hydrogels are gaining significant attention as promising candidates for the fabrication materials for flexible electronics. Nevertheless, improving the tensile properties, hysteresis, durability, adhesion, and electrochemical properties of these hydrogels remains challenging. This work reports the development of a novel semi-interpenetrating network poly(ionic liquid) hydrogel named PATV, via the in situ polymerization of acrylamide, N -[Tris(hydroxymethyl)methyl] acrylamide, and 1-vinyl-3-butylimidazolium tetrafluoroborate. The density functional theory calculations reveal that the poly(ionic liquid) in the hydrogel network acts as physical cross–linking points to construct hydrogen-bond networks. Furthermore, the hydrogen-bond networks dissipate energy efficiently and quickly, and thus stress concentration and hysteresis are avoided. The prepared hydrogel has a low hysteresis (9%), high tensile properties (900%), fast response (180 ms), high sensitivity (gauge factor = 10.4, pressure sensitivity = 0.14 kPa −1 ), and wide sensing range (tensile range: 1–600%, compression range: 0.1–20 kPa). A multifunctional sensor designed based on the designed hydrogel enables real-time, rapid, and stable response-ability for the detection of human movement, facial expression recognition, pronunciation, pulse, handwriting, and Morse code encryption. Furthermore, the assembled triboelectric nanogenerator displays an excellent energy harvesting capability, thus highlighting its potential application in self-powered flexible wearable electronic devices.
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高影响因子
FOOD HYDROCOLLOIDS
·
2024
·
IF 11
Yali Zhao,Dina M. El-Sherif,Jun Cheng,Huan Zhang,Zhenyang Hu,Qin Wu,Hui Shen,Zhilong Yu,Yunfei Xie
The development of a real-time monitoring system for meat freshness is crucial for ensuring food safety and enhancing the efficiency of the food supply chain. Herein, this study constructed a carboxymethyl cellulose-based colorimetric nanosensor array incorporating ionic liquid-tuned anthocyanins, a porous metal-organic framework particle (UiO-66), and nano-silica coating for real-time monitoring of pork freshness. Density functional theory calculations and multiple spectral analysis confirmed the mechanism by which ionic liquids tuned the anthocyanin color gamut. The sensor array's mechanical properties, thermal stability and sensitivity were significantly improved through the incorporation of UiO-66. The hydrophobic coating of the sensor array greatly enhanced the water contact angle rising from 76.5° to 134.8°, rendering excellent stability in high humidity conditions. The sensor array demonstrated good responsiveness and the durability up to 11 cycles to 5 common amine gases produced by meat spoilage. Additionally, the sensor array was integrated with 4 deep convolutional neural network models to predict pork freshness, all achieving accuracy rates above 97%. Notably, the VGG16 model achieved an accuracy rate of 99.16%. The designed monitoring system demonstrates significant potential for practical applications in intelligent meat packaging.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2025
·
IF 9.7
Nengjie Feng,Linyan Cheng,Yukun Zhang,Yujie Tao,Hui Wan,Chong Chen,Guofeng Guan
Cycloaddition, as a sound strategy for high-value utilization of carbon dioxide (CO 2 ), has been long pursued, wherein the challenging substrate activation process is a top priority for devising novel heterogeneous catalysts. In this study, a guanidine-based ionic liquid tethering –NH 2 groups was designed and integrated with chromium (III) terephthalate (MIL-101(Cr)) through the coordination with unsaturated Cr 3+ centers. The developed [NH 2 TMG]Br@MIL-101(Cr) (TMG represents tetramethylguanidine) decorated with plentiful basic functional groups created a fast channel for the capturing and binding of CO 2 , while the highly-accessible Lewis acidic sites (Cr 3+ ) and hydrogen bond donors (N + -H) embedded within the nanocomposite synergized to activate the epoxide, synchronously. Under the reaction conditions optimized by response surface methodology (RSM) (103.2 °C, 1.03 MPa, 1.85 h, and 2.53 wt% of catalyst), a satisfactory chloropropene carbonate (CPC) yield of 98.2 % with a selectivity of 99.2 % were achieved. We further demonstrated the heterogeneity and recyclability of [NH 2 TMG]Br@MIL-101(Cr), and ascertained the substrate expansibility. Moreover, the in-situ diffuse reflectance infrared Fourier-transform spectra (DRIFTS) and density functional theory (DFT) computations afforded deep insights into the proposed multiple-site activation mechanism for CO 2 coupling. This study highlighted an innovative pathway for constructing durable IL@MOFs nanocomposites and presented a tangible route to effectively converting CO 2 .
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PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Pin Hou,Xinyu Sun,Jianhui Guo,Chunrong Wang,Cesar Nieto-Delgado,Jianbing Wang
The study developed a novel adsorbent for improving perchlorate removal efficiency by anchoring Poly (ionic liquid) (PIL) onto granular activated carbons (GACs) via radical polymerization. The authors characterized the physical–chemical properties of GAC modified by PIL (PIL-GAC), and investigated its performance and mechanism for perchlorate adsorption. The results show that the introduction of dicationic ionic liquids dramatically increases the positively charged nitrogen (12.59 %) and point of zero charge (pH pzc = 9.79) of GAC, resulting in a higher attraction for perchlorate. Density Functional Theory (DFT) calculations reveal a better adsorption energy (−162.58 kJ/mol) of perchlorate on imidazole N, highlighting its potential selectivity over other N and O functional groups. PIL-GAC exhibits a maximum adsorption capacity (Q m ) of 300.05 mg/g at 25 °C, which is 12 times higher than that of pristine GAC and better than previously reported adsorbents. Additionally, this Q m is pH independent within pH 4 to 10. The perchlorate adsorption on PIL-GAC fits the Langmuir (R 2 ≥ 0.98) and pseudo second order kinetic (R 2 > 0.99) models, indicating a spontaneous process primarily driven by chemisorption. Remarkably, PIL-GAC also exhibits sustainable regeneration and greater selectivity for perchlorate with a lower hydration energy (−214 kJ/mol), over nitrate, chloride, and sulfate with higher hydration energy (−306, −347, and −1090 kJ/mol). After adsorption, PIL-GAC demonstrates a decrease of N + and an increase in Cl - , indicating that perchlorate adsorption of PIL-GAC mainly involves electrostatic interaction and ion exchange. Therefore, this study offers a promising method for efficient and selective removal of perchlorate from water.
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ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Hui Xu,Xiaonan Yuan,Yu Rao,Shuna Gao,Jiangna Guo,Feng Yan
Infection and oxidative stress seriously hinder the healing of diabetic wounds, resulting in various serious health and clinical problems. Herein, a sustainable biological hydrogen (H2)-producing hyaluronic acid–based hydrogel patch (HAP-Chl) was constructed by loading an imidazolium-based poly(ionic liquid) (PIL) flocculated live Chlorella as a diabetic wound dressing. The PIL can flocculate Chlorella through electrostatic interactions between PIL and Chlorella to form Chlorella agglomerates, endowing the Chlorella in the central agglomerates with the ability to continuously produce H2 for 24 h under mild conditions. Combining the membrane disruption-related bactericidal mechanism of PIL and the antioxidant properties of the produced H2, HAP-Chl was determined to be antibacterial and antioxidant. In addition to exhibiting biocompatible and nontoxic activities, subsequent Staphylococcus aureus-infected chronic wound studies revealed that HAP-Chl is capable of promoting the healing of chronic wounds by effectively killing bacteria, reducing extensive ROS, relieving inflammation, and promoting the deposition of mature collagen and angiogenesis. This study provides a new strategy for constructing an in situ sustainable H2-producing hydrogel, enabling the formation of novel antibacterial and antioxidant material platforms with potential for wound dressing applications.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Renhui Ling,Mingxing Li,Xin Li,Laihuan Pei,Xiaoyan Luo,Congmin Wang
MOFs have high adsorption performance of ammonia (NH 3 ) because of its porosity and abundant coordination sites, especially MOFs containing carboxylic acid ligands have emerged as effect NH 3 adsorbents. But, it’s troublous for reversible ammonia adsorption for the strong metal-NH 3 coordination or the collapse of adsorbents. [MEDTA] 2- is a very stable and classic carboxylic acid-containing complex, but there was no relevant report. Therefore, this work carried out the design and synthesis of PVIm-R8-MEDTA based on the use of the coordination structure of [MEDTA] 2- and the stability of PILs’ skeleton. The characterization indicated the [MEDTA] 2- could be introduced into PILs successfully for the hydrogen bonding interactions with the imidazolium cation, and the obtained PVIm-R8-MEDTA presented enhanced NH 3 capacity (10.4–14.7 mmol/g) than their precursor PVIm-R8-Br (7.8 mmol/g). The mechanism of NH 3 adsorption was proposed by DFT calculation, spectroscopic method, and the calorimetric test, it indicated the NH 3 was fixed by imdazolium cation through hydrogen bonding and inserted into two of the carboxylate and metal bonds of [MEDTA] 2- . Because of the multi-meshing coordination of [EDTA] 4- and metal ions, the disconnected carboxylate ions could easily coordinate with metal ions again and repair the chelating structure of [MEDTA] 2- , which caused the ammonia easily be desorbed. In the process of gas adsorption, there was no bonding breakage of the skeleton of PILs, which helped the PVIm-R8-MEDTA be recovered under moisture and NH 3 atmosphere. Thanks for the designability of PILs, such as the cationic structure, structure and size of cross-linking agent, the choice of complex anion and so on, it provides a new design idea and theoretical basis for efficient and reversible ammonia adsorption materials.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Jia Li,Guoquan Zhang,Mingzhi Luo,Gaomiao Li,Jun He
Salt lakes are abundant in three crucial resources − lithium(Li), magnesium(Mg), and boron(B). The separation efficiency of these resources is low, the excessive use of acid and the environmental harm caused by the accumulation of magnesium source after Li + extraction still exist. In this work, a new process of step-by-step extraction of B-Li and Mg mineralisation is proposed to separate the three resources. Boron was extracted using 2-ethyl-1,3-hexanediol (EHD) + kerosene, and it was found that the addition of FeCl 3 could significantly improve the boron extraction rate(E). In the R(O:A) = 1:3, 40 %EHD + 60 %kerosene, adding 0.15 mol/L FeCl 3 , after three-stage countercurrent extraction, the E(B 3+ ) reached 99 %, E(Fe 3+ ), E(Li + ) and E(Mg 2+ ) less than 4 %. Tributyl Phosphate (TBP)-Ionic Liquids (ILs)-kerosene-FeCl 3 system was used to extract Li + , the ILs and FeCl 3 existed in the extraction process with a competitive behaviour. The extraction efficiency of lithium was improved by cationic [C 4 mim + ] exchange reaction. Under the conditions of R(O:A) = 1:1, 5 %ILs + 65 %TBP + 30 %kerosene, and three-stage extraction, the E(Li + ) was reached 91 %. (NH 4 ) 2 CO 3 was used to mineralise the magnesium resources. At a reaction temperature of 40 °C, the product was magnesium carbonate trihydrate(MgCO 3 ·3H 2 O) with a smooth surface and rod-like structure, and the conversion rate reached 85 %. At 75 °C, the product was an irregular spheroidal basic magnesium carbonate(4MgCO 3 ·Mg(OH) 2 ·5H 2 O) with a magnesium conversion of 91.7 %.
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PROGRESS IN ORGANIC COATINGS
·
2024
·
IF 6.5
Siyu Liu,Chuanpeng Li,Xuanlin Qiu,Qiangliang Yu,Chufeng Sun,Yu Liu,Shuang Sun,Shuangshuang Yang,Xingwei Wang,Chen Zhao,Bo Yu,Meirong Cai,Feng Zhou
MXene's excellent corrosion resistance and self-lubricating properties allow it to be used as a filler in organic coatings to improve the protective properties of organic coatings. However, the random distribution of MXene (MX) in the coating can result in coating defects that make it impossible to meet higher protection requirements. To overcome this deficiency, this study builds upon previous research by employing a simple and environmentally friendly electrophoretic deposition technique. MX functionalised by ionic liquids (BTA-P 4444 -Lig) and protonated by HCl (f + -MX-P) is made to align in parallel in waterborne acrylic coatings (WAA) under the action of electric field force. This meets the higher protection requirements of organic coatings. Electrochemical tests show that the |Z| f=0.01 of f + -MX-P/WAA is 3 to 4 orders of magnitude greater than WAA. Parallel distribution of f + -MX-P in WAA is utilized to forma more continuous, uniform physical barrier and “inverse nacre effect”, which greatly extends the diffusion pathway for corrosive medium. Meanwhile, XPS testing showed that BTA-P 4444 -Lig loaded on the f + -MX-P surface could form a adsorbed layer on the metal surface. The “inverse nacre effect” formed by MX in WAA and the synergistic effect of BTA-P 4444 -Lig enhanced the corrosion resistance of the f + -MX-P/WAA. The outcomes of the friction testing indicate that the coefficient of friction for the f + -MX-P/WAA is lower at 0.103. This value is notably lower than that of WEP, which has a friction coefficient of 0.843. This is due to the fact that the parallel distribution of f + -MX in the coating has a certain inclination to the direction of crack propagation which effectively hinders crack propagation during friction. This reduces coating damage caused by crack propagation during friction, resulting in excellent wear resistance of f + - MX-P/WAA.
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CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Peng Xu,Weiwei Lu,Kexing Song,Haoyan Cheng,Hao Hu,Qianqian Zhu,Haitao Liu,Xiangkui Yang
Improving the properties of electrodeposited copper foil, the negative current collector of lithium-ion batteries, is crucial to the ongoing development of high-energy–density batteries. Despite the broad usage of chemical additives to regulate the copper foil, there remains substantial room for advancement due to the complexity of the mixed additives and the lack of related mechanism research. In this study, a functionalized ionic liquid, 1-aminopropyl-3-methyl imidazole chloride ([C 3 NH 2 CIm][Cl]), was designed and used as a new and single additive for controlling the deposition growth of Cu 2+ ions, allowing the preparation of copper foil with ultrahigh tensile strength and simultaneously high elongation. By using the optimal [C 3 NH 2 CIm][Cl] concentration of 30 mg/L, copper foil with a tensile strength of 455.6 MPa and an elongation as high as 17.1 % can be achieved. Subsequent structural characterizations and electrochemical analysis suggested that the addition of [C 3 NH 2 CIm][Cl] regulated the grain growth through cathode polarization and enhanced the copper foil properties by refining crystal grains and increasing the density of the Σ3 twin boundaries of the copper foil. A detailed understanding of the mechanism through which [C 3 NH 2 CIm][Cl] affects Cu 2+ ions electrodeposition is crucial for the development of innovative additives for electrodeposited copper foils, particularly for the production of high-property copper foils.
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Foods
·
2025
·Vol. 14
·期 6
·1058
·
IF 5.1
Xingran Kou,Kangning Ma,Xin Huang,Hui Wang,Qinfei Ke
In the process of ginger deep processing, a lot of waste is generated which is rich in biopolymers and active ingredients such as cellulose, starch, gingerol, and gingerol, but its low utilization rate leads to waste of resources. In this study, ginger waste residue, cellulose, and bioactive substances were spun into fiber materials by wet electrospinning technology with 1-butyl-3-methylimidazole acetate ([Bmim]Ac) as solvent. Fiber plasticization and [Bmim]Ac removal were achieved by dynamic deionized water coagulation bath. Scanning electron microscopy (SEM) and tensile strength analysis showed that the obtained GC-1 and GC-2 films have a non-uniform diameter, with a clear fiber structure and strong tensile strength. Fourier transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) confirmed that cellulose transforms from type I to type II crystal structure, and [Bmim]Ac is effectively removed. The inhibition rate of 6-Shogaol-impregnated GC film againstEscherichia coliandStaphylococcus aureuswas 99%. The experiment of strawberry preservation verified the potential of GC film in food preservation. In this study, the high-value utilization of ginger waste in food packaging was realized by preparing antibacterial electrospun fiber films.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Wenqi Song,Jingtao Liu,Sufeng Zhang,Zongcheng Miao,Yuzhen Zhao,Zemin He,Qin Peng,Valentin Nica,Liwei Qian
Water loss, oxidation, and microbial infection can degrade berries, highlighting the need for versatile, eco-friendly packaging. A novel tryptophan-Anion-Based ionic liquid modified reagent, 1-vinyl-3-aminopropyl imidazole-tryptophan ([vaim][Trp]), was synthesized and utilized for crafting a multifunctional bacterial cellulose (BC) packaging film (BC-CTA@PIL) via grafting polymerization. The optimized BC-CTA@PIL showcased superior tensile strength (5.42 MPa), modulus (152.24 MPa), oxygen and water vapor barrier capabilities due to the multiple interactions between polymeric [vaim][Trp] chains and BC macromolecules. Owing to the aromatic heterocyclic structure present in [vaim][Trp], the BC-CTA@PIL can achieve a free radical scavenging rate of 67.78 %. The multi-amino and hydrophobic functional groups within the polymeric [vaim][Trp] of BC-CTA@PIL synergistically contribute to its antibacterial efficacy, with inhibition rates of over 95 % against four Gram negative and positive bacterial strains. The BC-CTA@PIL revealed a high cell survival rate of 93.03 % for hamster lung cells. Therefore, BC-CTA@PIL could effectively preserving moisture and nutrients in berries, thereby extending their shelf life.
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高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Xiaohua Jing,Jianying Huang,Jiani Shi,Zihan Zhao,Jingbo Hao,Xiaoning Tang
In this study, five novel ionic liquids (ILs), namely [N888][Cyanex 272], [N888][P507], [N888][Cl], [N888][NO3], and [N888]2[SO4], were synthesized through an organic acid–base reaction, followed by separation using rotary evaporation. Their structures were confirmed by 1H and 13C NMR spectroscopy, showing full consistency with theoretical predictions and no impurity peaks. Under identical extraction conditions, the ILs exhibited the following separation efficiency order for Co2+ from Ni2+: [N888]2[SO4]>[N888][Cl] > [N888][P507] > [N888][Cyanex 272]>[N888] [NO3]. Density functional theory (DFT) calculations revealed that these differences in separation performance arose from variations in the ionic radii of the IL anions. With a simple single-stage extraction under optimized conditions, [N888]2[SO4] enabled near-complete separation of Co2+ from Ni2+, achieving an extraction efficiency of 99.5 ± 2.14% and a separation factor approaching + ∞. Thermodynamic analysis confirmed that the extraction process was endothermic and nonspontaneous. The Co2+ -loaded IL-based extraction phase was efficiently stripped using diluted sulfuric acid, with a stripping efficiency of 99.3 ± 0.57%. Using sodium hydroxide as a precipitant, the solid powder of Co(OH)2 was obtained from the Co2+-containing aqueous phase. Co(OH)2 was characterized qualitatively and quantitatively by XRD and ICP-OES, and its morphology was also analyzed using SEM. The recycled IL-based extraction phase, after activation with dilute sulfuric acid, was analyzed via FT-IR spectroscopy. This regenerated IL-based extraction phase was reused for the separation of Co2+ from Ni2+, showing no degradation in performance after three cycles. Based on these findings, a process flowchart was designed for the efficient preparation of Co(OH)2 from minerals or secondary resources using the [N888]2[SO4]-based extraction phase.
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危险品化学品经营许可证（带存储）