BIORESOURCE TECHNOLOGY
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2025
·
IF 9
Qing Zhang,Jiao Meng,Qingwen Tian,Lili Zhang,Jing Shen,Yonghao Ni,Zhiguo Wang
The recyclability of lactic acid/choline chloride deep eutectic solvent (DES) in lignocellulose fractionation remains challenging. This study demonstrates that DES reuse reduces delignification efficiency, with a residual lignin content of 9.64% after three cycles, resulting in incomplete fiber separation. The molecular weight of dissolved lignin increased, and 2D HSQC NMR revealed reduced β-O-4 cleavage. Accumulated dissolved hemicellulose and its degradation products (e.g., acetic acid, furfural) altered DES properties, increasing viscosity and reducing hydrogen bond basicity, which hindered mass transfer, lignin-carbohydrate complex dissociation, and lignin depolymerization. To address these limitations, activated carbon adsorption (boosting delignification degree to 77%, near fresh DES at 80%) and prehydrolysis (achieving 82% after three cycles vs. 90% for fresh DES) are proposed to remove hemicellulose and its byproducts, minimizing their impact on recycled DES. This study demonstrates the recyclability of DES and proposes two strategies that significantly improve it, ensuring sustainable and efficient biomass fractionation.
研究领域:
生物质工程
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化学工程
·
可再生资源
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产品关联
DOI
PubMed
高影响因子
Journal of Materials Chemistry A
·
2024
·
IF 10.7
Zhuang Liu,Yi Hou,Lirong Lei,Song-Qing Hu
This study presents a rapid and easy method for preparing a multifunctional hydrogel composed of lignin obtained by deep eutectic solvent pretreatment (DESL), Al3+ and polyacrylic acid (PAA) in aqueous system. DESL with high purity proves to be an exceptional raw material for the production of hydrogel-based moisture-induced electricity generators (HMEG), surpassing alkali lignin in availability and lignosulfonates in versatility. The resulting hydrogel exhibits exceptional self-adhesive, flexible, plastic, and self-healing characteristics with a tensile strength of 1.57 MPa and a tensile rate of 1580%. A single HMEG generated impressive voltage of 2.78 V/cm-3 and current of 22 μA/cm-3, which can function as a motion-sensor without an external power supply. This study presents a novel approach aimed at maximizing the DESL value and expediting the development of a hydrogel moisture power generation device that is both cost-effective and efficient, while also considering ecological considerations.
研究领域:
材料科学
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能源与环境科学
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DOI
高影响因子
JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE
·
2024
·
IF 3.3
Hongzhi Liu,Jihui Lin,Yaowu Hu,Hui Lei,Qian Zhang,Xiaoyu Tao,Dan Zhang,Hong Niu
BACKGROUND The pectin from Ficus carica Linn. (fig) peels is a valuable and recyclable constituent that may bring huge economic benefits. To maximize the utilization of this resource, deep eutectic solvent (DES)-assisted extraction was applied to extract pectin from fig peels, and the extraction process was optimized with response surface methodology. RESULTS When DES (choline chloride/oxalic acid = 1:1) content was 168.1 g kg −1 , extraction temperature was 79.8 °C, liquid–solid ratio was 23.3 mL g −1 , and extraction time was 120 min, the maximum yield of 239.6 g kg −1 was obtained, which was almost twice the extraction of hot water. DES-extracted fig peel pectin (D-FP) exhibited better nature than hot water-extracted fig peel pectin (W-FP) in terms of uronic acid content, particle size distribution, and solubility, but lower molecular weight and esterification degree. D-FP and W-FP had similar infrared spectra and thermodynamic peaks but differed in monosaccharide compositions. D-FP also showed good antioxidant capacities and exhibited better functional activities than W-FP. CONCLUSION These results indicated that D-FP was of promising quality being utilized in food or medical industries and the optimal DES-assisted extraction method might be applied as a sustainable process for the effective extraction of bioactive pectin from fig peels with the excellence of low equipment requirements and simple operation. © 2024 Society of Chemical Industry.
研究领域:
食品科学
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生物化学
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植物资源利用
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DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Geliang Dai,Yixin Zhou,Zeqi Liu,Jialin Liu,Kaixiang Tan,Lijian Xu,Yi Chen,Jingjing Du,Aokui Sun
To overcome critical challenges in flexible aqueous zinc-ion batteries (AZIBs)—specifically zinc dendrite proliferation, recurrent side reactions, and electrolyte mechanical-electrochemical incompatibility—we engineered a hydrogel electrolyte (PZEC). Synthesized in one step, PZEC integrates polyacrylamide (PAM)/ZnSO₄ with synergistic enhancements from ethylene glycol (EG)-based deep eutectic solvent (DES) and sodium carboxymethyl cellulose (CMC Na). A synergistic multi-component modification strategy reconstructing the hydrogen bond network yielded concurrent, major gains in mechanical strength and electrochemical stability. Hydrogen bond deconvolution analysis revealed a 3.1 % increase in strong hydrogen bonds within PZEC, accompanied by a significant reduction in the phase transition temperature to −29.46 °C, indicative of enhanced bound water confinement and low-temperature adaptability. PZEC manifests excellent mechanical properties (90 kPa fracture stress, 1280 % elongation) while attaining high ionic conductivity (29.26 mS·cm −1 ) and zinc ion transference number (0.63) via zinc solvation sheath compression and guided ion transport. The Zn//Zn symmetric battery exhibited exceptional cycling endurance, operating for 700 h at 5 mA·cm −2 and over 2000 h at 0.5 mA·cm −2 . Notably, PZEC maintained superior rate performance and cycling stability at 0 °C, retaining high reversible capacity and near-100 % coulombic efficiency (CE) even under high-rate conditions. Consequently, this work outlines a new methodology for high-performance flexible AZIBs and delivers significant insights for hydrogen bond-functionalized electrolyte engineering.
研究领域:
电化学
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能源材料
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电池技术
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高分子科学
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可持续能源
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产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 12.5
Dehong Lu,Huimin Yao,Nouman Ali Shah,Sajid Ali,Li-Yan Zeng,Ping Shi,Yuan-Sen Liu,Ziru Dai,Hafiz Umer Javed
The growing demand for sustainable and active food-packaging materials has increased interest in biodegradable biopolymers with improved functional performance. This study developed multifunctional chitosan (CS) films incorporating deep eutectic solvents (DESs) as green bioactive plasticizers to improve antioxidant, antibacterial, and mechanical properties. DESs were prepared using choline chloride with five organic acids, including citric (CA), malic (MA), oxalic (OA), lactic (LA), and ascorbic acids (AA), and the resulting DESs were evaluated for antioxidant and antibacterial activities. AA-DES and OA-DES showed the highest activities and were incorporated into CS films individually and combined (CS-AA-OA) at 1% concentration. Structural characterization (FTIR, XRD, SEM, TGA) and functional assessments were conducted to evaluate mechanical, thermal, and bioactive performance. The CS-OA film exhibited superior mechanical strength (56.42 MPa; 9.10% EB), while CS-AA-OA achieved the highest radical-scavenging activity (DPPH 88.15%, ABTS 98.44%) and strong antibacterial efficacy against E. coli (24.7 ± 0.34 mm) and S. aureus (22.8 ± 0.52 mm). The soil burial test confirmed excellent biodegradability, and coating applications on mushrooms and bananas effectively reduced browning, weight loss, and firmness degradation. The combined incorporation of AA-DES and OA-DES enhanced CS film structure and bioactivity, providing a sustainable, high-performance material for active food packaging.
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高影响因子
Analytical Methods
·
2017
·Vol. 9
·期 48
·6777-6784
·
IF 1.9
Guo-Wei Yu,Qiang Cheng,Jing Nie,Peng Wang,Xia-Jun Wang,Zu-Guang Li,Maw-Rong Lee
Deep eutectic solvents (DESs) have been gaining much attention in recent years due to their various novel properties. The present study develops a DES-based pretreatment followed by microwave-assisted hydrodistillation for the extraction of essential oil (EO) from dry fruits of white and black peppers. The process is optimized by single-factor experiments taking improvement in the EO yield of white pepper as the target. The results indicate that by using the reaction product of choline chloride and fructose as the DES with a 3 : 1 DES/powder mass ratio, the optimal conditions are (1) pretreatment stage: 600 W microwave power, 80 °C temperature, and 10 min duration; (2) fast heating stage: 600 W microwave power, 110 °C temperature, and 5 min duration; (3) hydrodistillation stage: 300 W microwave power, 110 °C temperature, and 35 min duration. Under these conditions, the EO yields of white and black peppers are 1.78% and 1.77%, respectively. The EOs are analyzed by using a gas chromatography-mass spectrometer (GC-MS), with a total of 54 compounds being identified. The new method brings about more identified compounds than hydrodistillation. Thus the DES-based approach has been proved superior in the enhancement of EO production, and has the potential of being extended to the analysis of volatile compounds from other plant resources.
研究领域:
植物化学
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分析化学
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DOI
高影响因子
Materials Today Chemistry
·
2022
·
IF 7.613
Bin Jia,Qianghui Mian,Dongling Wu,Tao Wang
Biomass had been extensively explored and applied in many fields due to their abundance, attractive structure, low cost, renewability, and environmental friendliness. Cottonseed meal (CM), one of the by-products of cotton, consisted of much crude protein, fiber, and inorganic ions, was a potential carbon precursor. In this work, CM was used to prepare N, S, and O self-doped carbon materials by two steps (hydrothermal pre-carbonization and K 2 CO 3 carbonization–activation) processes. The optimized material displayed high capacitive performance, which benefited from the large surface area (2361 m 2 /g), hierarchical porous structure and rich multi-heteroatoms doping of the prepared porous carbon . What's more, we prepared a new-type K 2 CO 3 -based deep eutectic solvent (DES) electrolyte. The assembled symmetric device using DES electrolyte displayed a superior energy density (34.4 Wh/kg) at room temperature. Furthermore, the energy density could reach 36.5 Wh/kg when the temperature rose to 50 °C. Even under extreme conditions, the device delivered a not particularly bad energy density (11.8 Wh/kg at −25 °C and 8.6 Wh/kg at 105 °C). This study provided an efficient and simple method to prepare CM-based heteroatoms self-doped porous carbon materials and uncovered a new possibility for the exploitation of carbon-based supercapacitors with high energy density.
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高影响因子
Processes
·
2021
·Vol. 9
·期 9
·1487
·
IF 2.847
Muhammad Faizan,Kifayat Ullah Khan Niazi,Hasnain Nawaz,Niaz Muhammad,Hao Li,Fei Dai,Ruirui Zhang,Ruixia Liu,Suojiang Zhang
In recent work, deep eutectic solvents (DESs) as ionic liquid analogues have been abundantly used in catalysis. Herein, vanadium phosphorus oxide (VPO) catalysts were synthesized from mono-, bi-, and tri- metallic DES of Nb, Zr, and Mo metal dopants as structure-directing agents and electronic promoters for n-butane selective oxidation towards maleic anhydride. Higher MA selectivity and larger n-butane conversion was successfully obtained using the newly developed catalysts, while oxidation by-product COx(CO, CO2) was minimized. Characterization techniques including FTIR, DSC, XRD, TEM, SEM, EDS, Raman spectroscopy, TGA, XPS, and NH3-TPD were employed to fully characterize the DESs, precursors and catalysts. This work led to an increase of 7.8% in MA mass yield with 16% more n-butane conversion as compared to an unpromoted VPO catalyst. Moreover, the utilization of a low-carbon alkane brought in a green impact on the chemical plant as well as the environment.Keywords:deep eutectic solvent;vanadium phosphorus oxide;n-butane selective oxidation;structure directing agent;electronic promoter
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高影响因子
Journal of Materials Chemistry A
·
2019
·Vol. 7
·期 24
·14613-14619
·
IF 10.733
Qian Wang,Huaiyan Ren,Yingqiang Zhao,Xinyuan Xia,Fang Huang,Guanwei Cui,Bohui Dong,Bo Tang
The phase junction of nano-TiO2 plays an important role in enhancing its photocatalytic activity. However, the achievement of the green, mild and controllable synthesis of phase-junction nano-TiO2 still remains a big challenge for the large-scale preparation and application. Deep eutectic solvents (DESs) show many advantages in the green and mild preparation of highly active nanomaterials due to their low cost, high environmental friendliness, easy large-scale preparation, tailored structures and tunable properties. In this study, by sharing two H-bond acceptors with one H-bond donor, we successfully used DES as a solvent, template, inhibitor and crystalline phase control agent simultaneously to controllably synthesize heterophase-junction nano-TiO2 with different phase ratios under green and mild reaction conditions (at 180 °C for 18 h). The H2 production rate of photocatalytic water splitting with this catalyst reached up to 14.51 mmol h−1 g−1, which was 20-fold greater than that of commercial P25 TiO2 and also much higher than those of other TiO2 nanostructures. To the best of our knowledge, this rate is the highest value reported so far for photocatalytic H2 production catalyzed by sole TiO2. This higher activity was mainly attributed to the phase junctions and defects. This study will provide a new way for the green, mild, easily controllable and versatile preparation of phase-junction photocatalysts with high efficiency.
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高影响因子
Coatings
·
2024
·Vol. 14
·期 12
·1544
·
IF 2.9
Xiansheng Cao,Xueping Li,Ruchun Wu,Bao Liu,Wenfei Lin
As an environment-friendly biodegradable material, poly (vinyl alcohol) (PVA) has been focused on improving performance and expanding its applications. In this study, improved performance lignin nanoparticle/PVA composite film was prepared by phenolation of bagasse lignin (BL) using a novel ternary deep eutectic solvent (DES). The effects of introduction of DES-phenolated lignin (DL) nanoparticles with different additions (1, 3, 5, 10 wt%) on the properties of DL/PVA composite film were comprehensively studied by mechanical performance test, UV-shielding performance test, contact angle measurement, thermogravimetric analyses and DPPH free radical scavenging activity. The experimental results indicated that lignin nanoparticles (LNPs) were homogeneously distributed in a biodegradable PVA matrix due to hydrogen bonds between the PVA matrix and lignin nanoparticles. With the introduction of DES pretreatment on native bagasse lignin, the various performances of DL/PVA composite films, such as tensile strength, surface hydrophobicity, UV-shielding and thermal stability, were enhanced in comparison with both pure PVA film and BL/PVA composite film incorporated with DES-untreated BL. The tensile strength of DL/PVA composite film with 3 wt% addition increased to 97.79 MPa from 69.41 MPa for pure PVA film, and the water contact angle increased from 43.7° to 84.2°. DL/PVA composite film with 10 wt% addition shielded 95.8% of the UV spectrum (400–200 nm). Moreover, after incorporating the DL nanoparticles into the PVA matrix, the as-obtained DL/PVA composite films displayed good antioxidant activity by eliminating most of the DPPH free radicals. With 10 wt% addition of DL nanoparticles, the DPPH radical scavenging activity of DL/PVA composite film increased by about 76% compared with pure PVA film. These enhanced properties were attributed to the more phenolic hydroxyl groups of DL nanoparticles than of BL and the hydrogen-bonding interactions. In conclusion, the DES-phenolation pretreatment of lignin clearly improved the properties of PVA composite films. Furthermore, as both lignin and PVA are biodegradable, the lignin nanoparticle/PVA composite film may be a promising candidate for fully biodegradable robust coating materials with vital potential applications, such as UV-shielding and food packaging, etc.
研究领域:
材料科学
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环境科学
·
纳米技术
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化学工程
·
聚合物科学
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产品关联
DOI
高影响因子
JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Xiaoqi Liu,Chenjia Jiang,Haodong Zhou,Yunfeng Yuan,Jinhua Zhu,Xiuhua Liu,Md. Zaved H. Khan,Minghua Lu
Synthetic phenolic antioxidants PG (propyl gallate), TBHQ (tert-butyl hydroquinone), BHA (butyl hydroxyanisole) are commonly used additives in edible oils, but excessive residues may pose health risks. Conventional detection methods suffer from high organic solvent consumption, complex pretreatment procedures, and environmental concerns. To address these limitations, this study developed a rapid, green and efficient analytical method combining deep eutectic solvent (DES)-based liquid-liquid microextraction (LLME) with high-performance liquid chromatography (HPLC) for the rapid determination of phenolic antioxidants in edible oils. Using an optimized hydrophilic DES system composed of choline chloride and 1,3-butanediol, (molar ratio 1:2), along with simplified extraction conditions (780 μL DES, 11 s vortex at room temperature), efficient extraction and enrichment of the target analytes were achieved. The method demonstrated excellent performance specifically for PG and TBHQ, exhibiting a wide linear range (1-400 μg/mL, R² > 0.9970), low limits of detection (0.12-0.28 μg/mL), satisfactory spiked recoveries (90.2 %-113 %), and good intra-day and inter-day precision (RSD < 5.0%). Analysis of real samples demonstrated that the proposed method is highly sensitive, operationally simple, and environmentally friendly for the analysis of PG and TBHQ, offering a promising alternative for rapid monitoring and food safety regulation of these two antioxidants in edible oils. It should be noted that the current hydrophilic DES system did not achieve optimal extraction efficiency for BHA, highlighting the need for further optimization toward a comprehensive multi-analyte approach.
研究领域:
食品化学
·
分析化学
·
食品安全
·
绿色化学
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产品关联
DOI
PubMed
高影响因子
Carbohydrate Polymer Technologies and Applications
·
2026
·
IF 7.6
Sijia Chen,Wenhua Miao,Huiqi Lu,Qijing Chen,Qian Song,Yadong Zhao,Fei Liu,Shaimaa Hatab,Meiling Chen,Bin Zheng
Chitosan exhibits high sensitivity of its solubility, rheological behavior, and performance consistency to molecular structure, among which an excessively broad molecular weight distribution (MWD) often leads to pronounced property fluctuations and poor reproducibility. However, effective control over MWD during conventional alkaline deacetylation remains challenging, and existing studies have largely focused on tuning molecular weight or degree of deacetylation (DD), with limited attention paid to MWD regulation. In this work, a controllable deacetylation strategy was established by combining strong alkali pre-soaking, an initial alkaline treatment stage, and a subsequent deep eutectic solvent (DES)–NaOH synergistic process, enabling the preparation of chitosan with a relatively narrow MWD. Compared with the water-substituted DES system (H₂O group) and the strong alkali system (NaOH group), chitosan obtained from the DES–NaOH synergistic system exhibited a lower MWD ( Đ ≈ 1.65) under identical chromatographic conditions. Structural characterization and thermal analysis indicate that DES partially disrupts the crystalline structure and modifies hydrogen-bond-related interactions, thereby potentially increasing the accessibility of acetyl groups to NaOH and facilitating deacetylation. Meanwhile, the presence of DES mitigates random alkali-induced glycosidic bond cleavage, reducing chain degradation and enabling a balance between deacetylation efficiency and polysaccharide backbone integrity. Overall, the DES–NaOH synergistic system provides a potential strategy for regulating chitosan MWD and contributes to understanding the relationship between processing conditions and structural evolution during polysaccharide deacetylation.
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高影响因子
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