FOOD CHEMISTRY
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2026
·
IF 10.4
Yuying Gao,Zhiguo Xiong,Caiying Wu,Min Fan,Li Li
Chitosan (CS), a renewable natural polymer, facing constraints in its application within the food packaging field due to the low heat-sealing strength after film formation by the casting method. This study successfully developed a novel and environmentally friendly CS active composite film via hot-press method. Although oregano essential oil (OEO) slightly reduced tensile strength (TS), it improved elongation at break (EAB) (140% increase), heat-seal strength (18.5% increase), and potentiated antibacterial effects against E. coli and S. aureus compared with the CS-DES film. In the preservation of white bread, the CS-DES-OEO film effectively inhibited microbial growth, and the shelf life was extended by at least 4 days compared to conventional polyethylene (PE) packaging. This study verified the green characteristics of the choline chloride-based DES and OEO, addressed the inherent limitation of the low heat-seal strength of CS films, and further demonstrating the potential of CS-based active packaging in food preservation applications.
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Min Fan,Xiaoxiao Cheng,Yuying Gao,Xiaofang Liu,Yabo Fu,Zhiguo Xiong,Li Li
Chitosan (CS), an excellent antibacterial biomacromolecule, cannot be directly heat-sealed, which severely limits its application as packaging material. In this study, heat sealable thermoformed CS films were prepared and their feasibility as independent packaging bags was explored, with deep eutectic solvents (DES) composed of citric acid (CA) and choline chloride (ChCl) as plasticizers. Orthogonal analysis was used to evaluate the effects of temperature, pressure, time and the mass ratio of CS to DES on the properties of thermoplastic CS films. Further, the CS-DES films were heat-sealed directly into pouches and used to preserve white bread. The results showed that the mass ratio of CS to DES has the most significant effect on the heat-sealing performance. When the mass ratio reached 6/4, the best heat-sealing strength was 3.77 N/15 mm. Multiple interactions occurred between DES and CS, including hydrogen bonding between choline chloride, CA and chitosan, as well as esterification and amidation reactions between CA and chitosan. The esterification and amidation reactions between CA and CS in the excessive DES may be the reason for the heat-sealing ability of CS-DES films. The freshness preservation results for white bread slices indicated that the CS-DES-7 film significantly inhibits microbial growth during storage, maintaining microbial counts within acceptable limits for 37 days. However, the film's moisture barrier properties require further enhancement to achieve superior freshness retention. Although chitosan has attracted widespread research interest due to its excellent properties, it cannot be heat sealed or made into bags, which limits its practical application in food. This study overcomes the limitation of chitosan's inability to heat seal, building a bridge from theoretical research to practical use of chitosan as packaging material.
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Catalysts
·
2025
·Vol. 15
·期 8
·725
·
IF 4
Bingxian Zhu,Yachao Liu,Yue Yan,Hui Wang,Yu Zhang,Ying Xin,Weijuan Xu,Qingshan Zhao
Hydrogen energy is a pivotal carrier for achieving carbon neutrality, requiring green and efficient production via water electrolysis. However, the anodic oxygen evolution reaction (OER) involves a sluggish four-electron transfer process, resulting in high overpotentials, while the prohibitive cost and complex preparation of precious metal catalysts impede large-scale commercialization. In this study, we develop a FeCo-based bimetallic deep eutectic solvent (FeCo-DES) as a multifunctional reaction medium for engineering a three-dimensional (3D) coral-like FeOOH-Co2(OH)3Cl/NF composite via a mild one-step impregnation approach (70 °C, ambient pressure). The FeCo-DES simultaneously serves as the solvent, metal source, and redox agent, driving the controlled in situ assembly of FeOOH-Co2(OH)3Cl hybrids on Ni(OH)2/NiOOH-coated nickel foam (NF). This hierarchical architecture induces synergistic enhancement through geometric structural effects combined with multi-component electronic interactions. Consequently, the FeOOH-Co2(OH)3Cl/NF catalyst achieves a remarkably low overpotential of 197 mV at 100 mA cm−2and a Tafel slope of 65.9 mV dec−1, along with 98% current retention over 24 h chronopotentiometry. This study pioneers a DES-mediated strategy for designing robust composite catalysts, establishing a scalable blueprint for high-performance and low-cost OER systems.
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ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Ran Tao,Feifei Mu,Jérome Chauvin,Serge Cosnier,Xue-Ji Zhang,Dan Shan
Rational design of highly dispersed CeO 2 nanozymes with abundant oxygen vacancies is critical for achieving efficient and sensitive H 2 O 2 detection. Herein, we report a deep eutectic solvent (DES)-guided engineering strategy to construct an N-doped carbon (NC) framework integrated with mussel-inspired, uniformly dispersed CeO 2 nanoparticles. The DES acts both as a green C/N source and a self-templating medium, regulating heteroatom distribution and graphitization degree to yield a conductive carbon scaffold. Dopamine undergoes oxidative self-polymerization under mild alkaline conditions, and its catechol–amine functionalities strongly chelate Ce 3+ ions, directing homogeneous nucleation and suppressing nanoparticle aggregation. This molecularly engineered architecture produces an oxygen-vacancy-rich interface enriched with redox-active Ce 3+ /Ce 4+ sites, enabling rapid electron transfer and accelerated H 2 O 2 redox kinetics. The optimized CeO 2 /NC electrode delivers a diffusion-controlled amperometric response with dual linear ranges (0.05–60 and 60–300 μM), a low detection limit of 0.036 μM, and sensitivities of 94.8 and 49.3 mA M -1 cm -2 , respectively, surpassing most reported CeO 2 -based sensors. Furthermore, the sensor exhibits excellent selectivity and retains 89 % of its initial response after prolonged operation. This work provides a scalable, eco-friendly pathway for constructing bioinspired, oxygen-vacancy-rich nanozymes, offering broad applicability in advanced electrocatalytic sensing platforms.
研究领域:
材料科学
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电化学
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纳米技术
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传感器与生物传感器
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环境化学
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CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Qian Wang,Bohui Dong,Yingqiang Zhao,Fang Huang,Junfeng Xie,Guanwei Cui,Bo Tang
TiO 2 as an important photocatalyst, how to achieve its fast, controllable and green synthesis still remains a big challenge for the large-scale preparation and application. Deep eutectic solvents (DESs) are promising solvents in the green and mild preparation of high active nanomaterial due to their low cost, high green degree, low toxicity, easy large-scale preparation and similar properties with conventional ionic liquids. In this study, through the combined effect of both H-bond donor and H-bond acceptor, we have successfully used DES as solvent, template and inhibitor at the same time to fast synthesize new crassula peforata-like TiO 2 with (0 0 1) and (1 0 1) planes under mild reaction conditions (at 160 °C for only 4–8 h). The H 2 production rate by photocatalytic water splitting of this catalyst reaches up to 13.13 mmol·h −1 ·g −1 , which is 18-fold greater than that of commercial P25 TiO 2 and also much higher than those of other TiO 2 nanostructures. Such rate is the highest yield reported so far to the best of our knowledge for photocatalytic H 2 production catalyzed by sole TiO 2 . The higher activity is attributed to the special shape with surface heterojunctions and defects. This study will provide a new way for the green, fast, easy-controllable and batch preparation of new and high efficiency photocatalysts.
研究领域:
材料科学
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环境科学
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INDUSTRIAL CROPS AND PRODUCTS
·
2022
·
IF 6.449
Weidong Lu,Zihao Xu,Meiyuan Li,Youheng Ma,Zijun Xiao
Deacidification is a critical step in alkali catalyzed transestrification of acidic oil for biodiesel production. In this work, optimization of the process variables and insights into the mechanisms of deep eutectic solvent (DES) assistance of deacidification of acidic oil catalyzed by Amberlyst 15 were investigated. Specifically, response surface methodology (RSM) and Box-Behnken Design (BBD) were employed to optimize the three process variables, namely temperature, catalysis loading, and molar ratio of methanol to oleic acid . Furthermore, the catalysts before and after used with and without DES assistance were characterized by FTIR and XRD in order to elucidate the chemical mechanisms involved in the process. Results showed that maximum deacidification rate (DR) of 98.02% was achieved in the deacidification process assisted by DES at the optimal process conditions (temperature 72.02ºC, catalyst loading 5.05 wt%, and methanol to oleic acid molar ratio 33.02), compared to 89.68% of the control (without DES assistance). Data analysis and verification results further confirmed the suitability of BBD and RSM methods in optimizing the process. More interestingly, dramatic higher catalytic activity (DR of 76.33% vs 64.16%) of Amberlyst 15 with DES assistance compared to that of the control after 4 cycles was observed. Finally, FTIR spectra confirmed that less water absorbed onto the surface of Amberlyst 15 with DES assistance was the major reason for higher DR and better catalyst reusability in comparison with the control.
研究领域:
化学工程
·
可再生能源
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Marine Drugs
·
2015
·Vol. 13
·期 8
·5219-5236
·
IF 2.853
Ming-Wen Xia,Cheng-Bin Cui,Chang-Wei Li,Chang-Jing Wu,Ji-Xing Peng,De-Hai Li
Three new and rare chromones, named epiremisporine B (2), epiremisporine B1 (3) and isoconiochaetone C (4), along with three known remisporine B (1), coniochaetone A (5) and methyl 8-hydroxy-6-methyl-9-oxo-9H-xanthene-1-carboxylate (6) were isolated from a mutant from the diethyl sulfate (DES) mutagenesis of a marine-derivedPenicillium purpurogenumG59. The structures of2–4including the absolute configurations were determined by spectroscopic methods, especially by NMR analysis and electronic circular dichroism (ECD) experiments in conjunction with calculations. The absolute configuration of the known remisporine B (1) was determined for the first time. Compounds2and3have a rare feature that has only been reported in one example so far. The compounds1–6were evaluated for their cytotoxicity against several human cancer cell lines. The present work explored the great potential of our previous DES mutagenesis strategy for activating silent fungal pathways, which has accelerated the discovery of new bioactive compounds.Keywords:chromone derivatives;remisporine;epiremisporine;isoconiochaetone;ECD;marine-derived fungus;Penicillium purpurogenumG59;DES mutagenesis
研究领域:
微生物学
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药物化学
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生物合成
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PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Hao Qin,Mintao Pang,Fanjing Wei,Zhiguo Yuan,Weizhou Jiao,Guisheng Qi,Youzhi Liu
Gas absorption plays a vital role in environmental protection and resource recovery but remains hindered by low mass transfer efficiency, large equipment size, and environmental concerns of conventional solvents. To address these challenges, this work establishes a generalizable framework that couples solvent innovation with equipment enhancement to advance sustainable process intensification. Specifically, room-temperature nonionic deep eutectic solvents (DESs) are rationally designed through precursor collection, fusion property and EHS evaluation, and solid–liquid equilibrium calculations, yielding 313 feasible DES combinations. Considering five composition ratios, 1565 DES candidates are generated, from which COSMO-RS screening identifies three promising diglyme-based systems for CO2 absorption. Their absorption behavior is experimentally validated in a rotating packed bed (RPB), confirming both the reliability of the computational screening and the significant intensification effect of high-gravity field. Mechanistic insights are further obtained from σ-profiles, interaction energy calculations, and quantum chemical analyses, revealing that van der Waals interactions dominate CO2-DES binding, while hydrogen bonding drives DES formation. These results not only validate the consistency of solvent design and experimental outcomes but also highlight the synergistic effect of integrating solvent design with high-gravity technology. Overall, the study demonstrates a versatile methodology for intensifying gas absorption, with CO2 capture as a representative application.
研究领域:
化学工程
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环境科学
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可持续技术
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绿色化学
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分离过程
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LWT-FOOD SCIENCE AND TECHNOLOGY
·
2026
·
IF 7.1
Guohua Teng,Min Zhou,Initizar Anwar,Yang Liu,Fuyi Li,Yanxu Chang,Yidan Wang,Yuefei Wang,Fei Tian
Flavonoids in Scutellaria Radix ( SR ) exhibit significant pharmacological activities, yet conventional extraction methods often suffer from low efficiency and poor selectivity. Here, a green and effective strategy was developed using deep eutectic solvent (DES)-functionalized magnetic nanoparticles for selective flavonoid enrichment. Forty-eight DESs were screened, and levulinic acid/L-proline (2:1) was identified as the optimal system. The selected DES was employed to synthesize Fe 3 O 4 @SiO 2 @DES, which demonstrated high specificity and adsorption performance in magnetic solid-phase extraction. Under optimized conditions, adsorption efficiencies for four representative flavonoids ranged from 0.770 ± 0.01 to 0.983 ± 0.002, with desorption recoveries of 0.551 ± 0.003 to 0.919 ± 0.019. The method showed excellent linearity (R 2 ≥ 0.9998) and low limits of detection and quantification (0.01-0.35 μg mL −1 and 0.03-0.98 μg mL −1 , respectively). Moreover, the adsorbent retained high adsorption efficiency after six reuse cycles, demonstrating stability and reusability. This work provides a sustainable and selective approach for flavonoid enrichment from SR and highlights the potential of DES-functionalized magnetic nanomaterials as an eco-friendly alternative to conventional organic solvent-based extraction.
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JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 59
·期 2
·715-727
·
IF 4.5
Li Bin,Zhou Mengjing,Wu Aolin,Liu Haiying,Du Li,Su Lihua
Preparation of composite hydrogels by in situ polymerization (SP) using choline chloride (ChCl), acrylamide (AM), and urea (U) as raw materials for deep eutectic solvent (DES), with the introduction of PVA and PVDF as fillers into DES. Characterization of the composite hydrogels was conducted using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). This study analyzed the pressure sensitivity, piezoelectricity, swelling behavior, and mechanical properties of the composite hydrogels. The results indicate that due to the dipole–dipole interactions between PVA and PVDF, the composite hydrogels exhibit excellent pressure sensitivity and piezoelectric performance. When the ratio of PVA to PVDF is 1:1, the composite hydrogels exhibit optimal performance, with a 3.37-fold increase in pressure sensitivity and a 6.49-fold increase in piezoelectricity compared to other ratios. This research provides a method for preparing composite hydrogels with excellent piezoelectric performance and pressure sensitivity.
研究领域:
材料科学
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高分子科学
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化学工程
·
纳米技术
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DOI
高影响因子
Journal of Energy Storage
·
2026
·
IF 10.7
Jianming Feng,Long Zhang,Xinyuan Bai,Yapeng He,Lifeng Yan
Cellulose-based hydrogels are promising for flexible energy storage, but their electrochemical stability window (ESW) and environmental tolerance are often limited in aqueous environments. In aqueous energy storage devices, tailoring the solvation sheath to suppress parasitic side-reactions key to expanding the ESW. Herein, we propose a “dual-source Zn” strategy that successfully fabricates a uniform, highly stable, water-lean cellulose/DES gel electrolyte (CDE) through multiscale and multidimensional molecular engineering of the cellulose network and solvation environment. This strategy creates a unique anchoring-conducting composite microstructure: internal zinc acts as a structural anchor, strongly coordinating with the cellulose backbone to form a stable, pre-crosslinked network. This not only prevents surface densification during phase inversion but also facilitates the uniform permeation of the external DES and zinc salt. The external zinc, in turn, functions as a mobile charge carrier, facilitating ion conduction within the confined nanochannels formed by this matrix. Microstructural characterizations confirm that this unique synergistic effect effectively suppresses highly active water while preserving efficient ion transport pathways. Consequently, the resulting electrolyte exhibits a remarkable 3.3 V voltage window, an excellent zinc-ion transference number (0.82), and a highly competitive ionic conductivity of 9.86 mS cm −1 under water-lean conditions. Zinc-ion hybrid supercapacitors (ZHSCs) assembled with this electrolyte deliver an outstanding specific capacity of 140.3 mAh g −1 at 1 A g −1 and demonstrate exceptional long-term cycling stability (92.5% retention after 1500 cycles).
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Carbon Letters
·
2026
·
IF 6.2
Sheng Hongliang,He Tao,Li Ye,Cao Chengyang,He Song
Poplar wood was employed as the precursor to develop a coupled “microwave self-gasification & aqueous post-modification” protocol that enables instantaneous activation within a microwave field, yielding activated carbon dominated by ultra-micropores (< 0.7 nm). Despite a modest BET surface area of ~ 900 m²/g, the material exhibits an exceptional CO₂ uptake of 180.4 mg/g at 0 °C and 1 bar—1.6-fold higher than at 25 °C—while N₂ uptake remains below 30 mg/g under the same conditions. On a pore-volume basis, the carbon stores 443.79 mg CO₂ per cm³ at 0 °C and 278.62 mg/cm³ at 25 °C. CO₂ adsorption proceeds via a multilayer mechanism with the isosteric heat (Qst) decreasing from 45 to 23 kJ mol⁻¹, whereas N₂ follows a monolayer pathway with Qst held between 20 and 24 kJ mol⁻¹. IAST calculations reveal that CO₂/N₂ selectivity rises from 70 to 90 with increasing pressure at 0 °C and levels off around 50 at 25 °C. Dynamic breakthrough experiments deliver a separation factor of 8.28 for a 15% CO₂/85% N₂ mixture. GCMC simulations further indicate that O–C = O-functionalized surfaces confer the highest CO₂ capacity, while C–S–C motifs are the least favorable in competitive adsorption.
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