FUEL PROCESSING TECHNOLOGY
·
2015
·
IF 3.352
Yucui Hou,Zhongyi Li,Shuhang Ren,Weize Wu
In this work, separation of aromatic hydrocarbons from aromatic/aliphatic mixtures by deep eutectic solvents (DESs) at room temperature was developed. It was found that DES formed by levulinic acid as hydrogen bond donor and tetrabutylphosphonium bromide (TBPB) as hydrogen bond acceptor could efficiently separate aromatic hydrocarbons from aromatic/aliphatic mixtures. Levulinic acid/TBPB mole ratio, DES/toluene mole ratio, toluene mole fraction , and extraction temperature had an influence on the selectivity and extraction rate of toluene. The extraction could be performed at optimal conditions of 6:1 mol ratio of levulinic acid to TBPB and 6.4:1 mol ratio of DES to toluene at room temperature. Toluene in DES could be recovered by distillation of toluene at 100 °C under reduced pressure and DES was reused four times without obvious decrease in weight, selectivity and extraction rate. The work may provide an environmentally friendly method to separate aromatic/aliphatic mixtures, which avoids using a large number of toxic organic solvents.
研究领域:
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Materials Horizons
·
2025
·
IF 10.7
Jin Zhang,Lingzhuang Meng,Yinan Jia,Jianshu Li,Xinyuan Xu,Xin Xu
Periodontitis, a chronic inflammatory disease triggered by dental plaque, often presents challenges in management, particularly in severe cases where mechanical debridement alone may be insufficient. As a result, adjunctive therapies, particularly localized drug delivery systems with both antimicrobial and anti-inflammatory properties, are essential to enhance the efficacy of periodontitis management. In this study, we developed a multifunctional hydrogel by incorporating a salicylic acid–choline deep eutectic solvent (DES) into a chitosan/β-glycerol phosphate sodium (CS/GP) hydrogel matrix for the treatment of periodontitis. The DES-CS/GP hydrogel demonstrated favorable physicochemical properties, including gelation and injectability, making it highly suitable for application in the oral cavity. The hydrogel effectively inhibited the growth of key periodontal pathogens, Porphyromonas gingivalis and Fusobacterium nucleatum, and significantly downregulated the expression of pro-inflammatory cytokines TNF-α and IL-1β in vitro. Cytocompatibility assessments showed over 80% cell viability in human gingival fibroblasts, human gingival epithelial cells, and human oral keratinocytes over 5 days treated with DES-CS/GP, with fluorescence microscopy confirming robust cytoskeletal integrity. Furthermore, the hydrogel enhanced permeability through gingival tissues in vitro. In a rat model of periodontitis, the hydrogel significantly mitigated bone loss, reduced bacterial loads of P. g, and suppressed TNF-α and IL-1β expression in gingival tissues. These findings underscore the hydrogel's potential as a safe and effective adjunctive therapy for periodontitis, offering a combination of antimicrobial, anti-inflammatory, and tissue-permeating properties with high biosafety and ease of application.
研究领域:
口腔医学
·
药剂学
·
生物材料学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2024
·
IF 5.5
Jianru Li,Cunying Xu,Guilin Xiang,Wenkang Chen,Daiyun Gu,Qibo Zhang,Yixin Hua,Yan Li
The electrodeposition of neodymium (Nd) in a novel analogous ionic liquid (AIL), phenyltrimethylammonium chloride-ethylene glycol (TMPAC-EG), was investigated. The existence form and the electrochemical behavior of Nd(III) in TMPAC-EG were studied using spectroscopic, cyclic voltammetry and chronoamperometry analyses. The spectroscopic analyses indicates that Nd 3+ interact with Cl − and EG to form complexes [Nd(EG) 6-y Cl y ] 3-y as NdCl 3 dissolves in TMPAC-EG IL. Cyclic voltammograms reveals that the overpotential for Nd electrodeposition in TMPAC-EG IL decreases with the rise of the temperature. The diffusion coefficient of Nd(III) ions is calculated to about 10 −12 m 2 s −1 . The diffusion activation energy for Nd(III) ions is determined to be 22.8 kJ mol −1 from the temperature dependence of diffusion coefficient. The transient analysis indicates that initial nucleation behavior of Nd conforms to the three-dimensional instantaneous nucleation and growth model, which are largely independent of temperature. In addition, deposition temperature and deposition potential are found to have a great influence on the nucleation and growth kinetics of Nd electrodeposition. Depending on the temperature and potential of electrodeposition, metallic neodymium with caterpillar-shape, nodule, layered rock, or porous structures was obtained.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
·
2020
·Vol. 22
·期 44
·25760-25768
·
IF 3.43
Yaqing Wang,Wenjun Chen,Qi Zhao,Guizhen Jin,Zhimin Xue,Yingxiong Wang,Tiancheng Mu
Deep eutectic solvents (DESs) have attracted considerable attention due to their unique properties. Owing to similar structures and properties, DESs are also called “quasi-ionic liquids” or “ionic liquid analogous”. However, for a deeper understanding and application of DESs, a comprehensive investigation on the ionicity of DESs is crucial. In this work, the effects of the structure and components of typical DESs on the ionicity were investigated. Moreover, the ionicity was discussed by using Walden plot, and the validity of applying it to DESs was verified using pulsed field gradient nuclear magnetic resonance (PFG-NMR). We found that the lack of free charged species and high viscosities make it difficult to achieve optimal conductivities for DESs, and thus most of them exhibit “poor ionic” nature. Fortunately, with an in-depth understanding of its microstructure and physicochemical properties, the properties of DESs can be finely tailored by selecting or even designing suitable parent compounds for functional applications. In particular, the ionicity of Li-based DESs was investigated for their potential application as electrolytes in Li-ion batteries.
研究领域:
化学
·
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Bioresource Technology Reports
·
2020
·
IF 0
Jing Gao,Cuili Chen,Yanping Lin,Lili Zhang,Hongwu Ji,Shucheng Liu
In this study, four deep eutectic solvents (DESs) were used as cheaper and “greener” alternatives to ionic liquids (ILs) to create novel microemulsions . Compared with 1-ethyl-3-methyl imidazolium acetate ([Emim]Ac), the DESs of lactic acid:glucose:water and lactic acid:fructose:water (molar ratio = 5:1:3) comprising acid hydrogen-bond donor (p K a = 3.86) showed stronger capability to form the microemulsions with Tween 20 , methanol and cyclohexane . After the pretreatment of rice straw at 70 °C for 12 h by using the microemulsions (mass ratio of DES, Tween 20/methanol, cyclohexane = 0.1:0.8:0.1), 54.3% of lignin was removed, and the crystalline structure was significantly disrupted. When the content of DES (lactic acid:glucose:water) increased to 50%, the sugar yield of the residues was increased to 88.1%, which was 3 times than that of untreated one. Moreover, the enzymatic hydrolysis of the residues is linearly and positively correlated with the delignification abilities of the DES microemulsion.
研究领域:
生物化学
·
农业科学
·
环境科学
✓ 已验证
DOI
ELECTROCHIMICA ACTA
·
2015
·
IF 4.504
Min Li,Bingliang Gao,Chengyuan Liu,Wenting Chen,Zhongning Shi,Xianwei Hu,Zhaowen Wang
A new acetamide based eutectic solvent is obtained via complexation with AlCl 3 . The electrodeposition of aluminum is successfully achieved from AlCl 3 /acetamide eutectic solvent. The cyclic voltammograms on tungsten electrode indicate that Al(III) are easier to be reduced from AlCl 3 /acetamide eutectic solvent at a molar ratio in a range of 1.1 to 1.5. Aluminum coatings were prepared at −0.25 V (vs. Al/Al 3+ ) and different temperatures at 313 K and 333 K in AlCl 3 /acetamide eutectic solvent at molar ratio = 1.3 (r = 1.3). The SEM images show that thick adherent aluminum films were deposited on the copper substrate. The EDS and XRD analysis confirm that the obtained deposits are pure aluminum. The present results allowed the new and cheap AlCl 3 /acetamide eutectic solvent to be a potential electrolyte for aluminum electrodeposition at room temperature .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2024
·
IF 8.1
Jin-Jian Pan,Jia Huang,Yuan-Hang Qin,Zhen Chen,Li Yang,Cun-Wen Wang,Xingmao Jiang
Ba-based perovskite oxides rich in oxygen vacancies (OVs) are anticipated to possess robust electron-donating capabilities and other favourable properties, rendering them a promising support for Ru catalysts in NH 3 synthesis. Herein, a glucose-urea deep eutectic solvent calcinating method was developed to synthesize an OV-rich BaTiO 3 (BTO-H) support for Ru catalysts. The BTO-H-supported Ru (Ru/BTO-H) catalyst achieves an impressive NH 3 synthesis rate of 5133 μmol g cat –1 h −1 (256.7 mmol g R u –1 h −1 ) at 400 °C and 0.1 MPa, surpassing the performance of Ru catalysts supported on OV-poor BTO supports and other supported Ru catalysts. Physical characterizations and kinetic experiments reveal the multifaceted influence of OVs on enhancing the catalytic performance of Ru/BTO-H in NH 3 synthesis. OVs serve as electron donors to Ru catalyst, facilitating the activation and dissociation of N 2 . Simultaneously, OVs act as hydrogen acceptors from the Ru surface, mitigating hydrogen poisoning effects. Additionally, OVs stimulate the formation of surface hydrides, not only providing active sites for N 2 activation but also bestowing an electron-donating effect on the supported Ru catalyst. The combined positive effects of OVs establish BTO-H as an outstanding support for Ru catalysts in NH 3 synthesis.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2025
·
IF 7.3
Mingqiang Cheng,Juanjian Ru,Qibo Zhang,Yixin Hua,Cunying Xu,Yinghua Zhang,Ding Wang
The boom of the lithium-ion battery (LIB) industry is dialectically correlated with a scarcity of raw resources, particularly lithium (Li), so the recovery of critical metals from spent LIBs has become very essential for resource sustainability. Here, a new strategy for the one-step direct recovery of Li from spent LIB cathode active materials via water-based deep eutectic solvents (DESs) is put forward, together with the recycling and reuse of the DES. Without any reagent and pretreatment, Li2C2O4 can be directly and preferentially precipitated from the H2O-based choline chloride-oxalic acid (ChCl-OA) DES, and CoC2O4·2H2O is obtained easily from the residual Co-rich leachate by adding H2O. The leaching efficiencies are nearly 100% for Li and Co, and the recovery efficiencies reach 91.2 and 94.6%, respectively. The recovery mechanism of Li and Co is clarified based on the coordination-guided design between Li+ and C2O42–, which enables the precise separation of Li and Co. It is crucial to strictly control the H2O content in the DES, which is always being ignored, serving as a diluent and complexant, avoiding the solidification of the DES, and realizing the preferential precipitation of Li. The optimization of the leaching and recovery processes is comprehensively investigated as well as the middle-sized experiments in the 2 L leaching level, and a leaching kinetic model is established. The strategy proposed here offers a promising possibility for the direct and preferential recovery of Li from spent LIBs, promoting the development of high economic efficiency and environmental protection of the battery recycling market.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2016
·
IF 1.835
Chunyan Ma,Yanhua Guo,Dongxue Li,Jianpeng Zong,Xiaoyan Ji,Chang Liu,Xiaohua Lu
The molar enthalpies of mixing for binary systems of choline chloride (chcl)/urea deep eutectic solvents (mole ratios of 1:1.5, 1:2, and 1:2.5) with water were measured at 308.15 and 318.15 K under atmospheric pressure with an isothermal calorimeter. The binary mixture of (chcl/urea (1:2.5) + water) showed endothermic behavior over the entire range of compositions, while the binary mixtures of (chcl/urea (1:1.5) + water) and (chcl/urea (1:2) + water) showed endothermic behavior first and then was changed to be exothermic with increasing content of deep eutectic solvents. The Redlich–Kister (RK) equation and the nonrandom two-liquid (NRTL) model were used to fit experimental molar enthalpies of mixing. The NRTL model with the fitted parameters was further used to predict the vapor pressure for the three systems and was compared with the experimental data from literature. For the binary mixtures of (chcl/urea (1:2) + water), the predicted vapor pressure agreed well with the experimental data only when the temperature was lower than 333.15 K and the mole fraction of chcl/urea (1:2) was lower than 0.1. Otherwise, the deviation increased greatly with an increase of the amount of chcl/urea (1:2).
研究领域:
化学热力学
·
物理化学
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2023
·
IF 6.7
Haiwei Yang,Lvzhu Cheng,Qiliang Yang,Amjad Farooq,Lili Ying,Peng Wang,Zongqian Wang
Integration of natural textiles ( e.g. silk) and two-dimensional transition metal carbide/nitride (MXene) is promising for the development of wearable thermal management materials. However, fabricating MXene-decorated textiles with durable and stable thermal management performance remains a challenge due to the susceptible oxidation of MXene and the weak interaction between MXene and fibers. Here, we propose a novel surface modification strategy for MXene nanosheets (SSMXene) by co-assembling with natural sericin to protect against water and oxygen, enrich surface chemistry, and significantly enhance oxidative stability. Subsequently, SSMXene-coated silk fabrics (M-silk) were developed via choline chloride/oxalic acid deep eutectic solvent (DES) micro-etching pretreatment and then decorating SSMXene through a scalable solution dip-coating technique. Notably, DES micro-etching pretreatment enabled strong interfacial bonding between SSMXene and fibers through the synergistic effect of hydrogen bonding and mechanical locking. The fabricated M-silk not only demonstrated desirable thermal management performance, including active electrical heating (the maximum temperature rise = 55.6 °C) and passive radiative heating (the mid-infrared emissivity as low as 0.24 at 7–14 μm), but also possessed superior breathability, laundry durability, and flame retardancy. Therefore, the smart, comfortable, durable, and multifunctional M-silk displays great potential for achieving effective personal thermal management.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
THERMOCHIMICA ACTA
·
2021
·
IF 3.115
Qicheng Chen,Nan He,Jing Fan,Fenhong Song
As the analog of ionic liquids, deep eutectic solvents (DESs) have drawn intense attention and are considered as a novel class of green solvents. Due to their splendid advantages such as low melting points, low vapor pressure, high thermal stability, wide liquid ranges and low price. DESs have been researched for a wide range utilization in many areas. Especially they have been investigated as heat transfer fluids recently. Thermal conductivity is an important transport property that influences the convective heat transfer. Nonetheless, very limited data is available on the thermal conductivity of DESs. In this work, nine DESs were prepared by using betaine as hydrogen bond acceptor and glycerol or 1,2-propanediol as hydrogen bond donor. Then, the thermal conductivities of these DESs were measured in a large temperature range (293 to 373 K) at atmospheric pressure. The thermal conductivity measurement had a combined expanded uncertainty better than ± 2.0% (in the 0.95 confidence level).
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
Coatings
·
2020
·Vol. 10
·期 12
·1154
·
IF 2.436
Xiaozhou Cao,Lulu Xu,Chao Wang,Siyi Li,Dong Wu,Yuanyuan Shi,Fengguo Liu,Xiangxin Xue
The electrochemical behavior and electrodeposition of Sn were investigated in choline chloride (ChCl)–urea deep eutectic solvents (DESs) containing SnCl2by cyclic voltammetry (CV) and chronoamperometry techniques. The electrodeposition of Sn(II) was a quasi-reversible, single-step two-electron-transfer process. The average transfer coefficient and diffusion coefficient of 0.2 M Sn(II) in ChCl–urea at 323 K were 0.29 and 1.35 × 10−9cm2∙s−1. The nucleation overpotential decreased with the increase in temperature and SnCl2concentration. The results of the chronoamperometry indicated that the Sn deposition on tungsten electrode occurred by three-dimensional instantaneous nucleation and diffusion controlled growth using the Scharifker–Hills model. Scanning electron microscopy (SEM) showed that the morphology of the deposits is uniform, as a dense and compact film prepared by potentiostatic electrolysis on Cu substrate. X-ray diffraction (XRD) analysis revealed that the deposits were pure metallic Sn.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）