JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2024
·
IF 4.1
Haoqing Tang,Yulan Wang,Xiaohuan Liu,Tian Tian,Qiang Weng,Xiaotong Liu,Tao Liu
Rational design and preparation of titanium-based anode materials with superior fast charge and discharge are a key focuses of the lithium-ion batteries research. Herein, a novel and facile synthesis of uniformly carbon-coated Li 2 CuTi 3 O 8 (LCuTO) nanoparticles with excellent high-rate lithium storage properties is presented using HKUST-1 with pore structure and active metal sites as a copper source. The well-designed LCuTO@HKUST with carbon bridges between the particles and the carbon layer on the outer surface offers high electronic conductivity for fast charge and discharge. The LCuTO@HKUST exhibits extraordinary lithium storage performance: high capacity (251.8 mAh/g after 1000 cycles at a current density of 1.0 A/g), a superior high-rate capability (160.3 mAh/g after 500 cycles at 3.0 A/g and 138.1 mAh/g after 500 cycles at 5.0 A/g), and excellent cycle reversibility and cycle stability under various current densities. In addition, the lower Li + migration barrier in LCuTO@HKUST demonstrated by density functional theory (DFT) calculations is beneficial to the long-cycle stability and high-rate performance. The proposed preparation method and the strategy of using the MOF as a metal source for lithium-ion battery anode materials provide a new approach for advanced fast charge–discharge energy storage applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
JOM
·
2020
·Vol. 72
·期 11
·3806-3811
·
IF 2.054
Li Min,Li Ying
In this work, we report an electrochemical route to directly reduce solid lead oxide (PbO) to lead in an acetamide-1-methylimidazolium trifluoromethylsulfonate (acetamide-MIMTfO) low-temperature molten salt. A cyclic voltammogram recorded using a graphite cavity electrode filled with PbO powder reveals that solid PbO can be directly electrochemically reduced to lead. Constant voltage electrolysis experiments with a PbO pellet cathode and a high-purity graphite anode were performed under different constant voltages (2.2–2.8 V) and at 343 K for different durations (2–6 h). XRD patterns of the electrolysis products confirm that the PbO pellet can be thoroughly reduced to lead after 6 h electrolysis. The present electrochemical route and acetamide-MIMTfO low-temperature molten salt can be used for extracting metals from their oxides at room temperature.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
JOURNAL OF HETEROCYCLIC CHEMISTRY
·
2023
·
IF 2.4
Ping Zhao,Qingle Zeng
We have developed a diversity-oriented, substrate-controlled, chemoselective synthetic method for a variety of structurally diverse 1-sulfonylquinazoline-2,4(1H,3H)-diones and 2-sulfonamidobenzonitriles. This substrate-controlled synthesis is accomplished through the condensation reaction of 2-(sulfonamido)benzamides with or without an N-methyl group on the amides. The reactions are fulfilled within half an hour at room temperature with solid triphosgene as a convenient condensing agent and pyridine as an acid acceptor. This protocol features easily available starting materials, mild reaction conditions, easy experimental operation, and moderate to excellent yields of products.
研究领域:
有机化学
·
药物化学
✓ 已验证
DOI
高影响因子
Current Research in Food Science
·
2022
·
IF 6.269
Kwame Eduam Baiden Frempong,Yan Chen,Lili Liang,Xiaoyan Lin
During post-harvest storage, the cell wall properties are closely associated with the physical, chemical, and biological properties of the fruit. The degradation of pectin in the cell walls and middle lamella is critical to these properties. The effects of calcium chloride (CaCl₂) and 1-methylcyclopropene (1-MCP) combined treatment on the pectin degradation, texture, and peel color of Eureka lemon were investigated during post-harvest storage. The in-situ light microscope analysis, rapid method, and FTIR test were used to investigate the spatial distribution, the pectin content, and its degradation. The results showed a reduction in pectin degradation, by 42 d the CaCl₂ and 1-MCP combined treated fruits presented a 36.7% pectin content loss which was lower than the control which was 48.3%. The treated fruits significantly exhibited enhanced textural properties, delayed weight loss, higher total acids, and improvement of other physicochemical properties in comparison to the control. The treatment deaccelerated the fruit peel color change from green to yellow and also had a better visual appearance on the final day. Overall, the results suggest that the control treatment for pectin degradation can reduce the fruit texture decline and peel color change and maintain a good visual appearance. The influence of pectin degradation on the texture and physicochemical properties of lemon provides a theoretical basis for fruit storage optimization, quality control, and shelf-life extension.
研究领域:
食品科学
·
植物生理学
✓ 已验证
DOI
PubMed
高影响因子
BIORESOURCE TECHNOLOGY
·
2017
·
IF 5.651
Bai-ren Yang,Zhu-qiu Sun,Li-ping Wang,Zhao-xia Li,Cheng Ding
A strain, Brevibacillus agri DH-1, isolated from dry lands was used to remove m -dichlorobenzene. After 48 h culturing, the concentrations of m -dichlorobenzene decreased from 26–130 to 7.87–28.87 mg/L and dry cell weight for bacterial growth reached 52.43–75.05 mg/L. The growth and degradation kinetics were analyzed by the fitting of Haldane-Andrews model and pseudo first-order model. A degradation pathway was proposed according to major intermediates (phenol), chloride ion variation, ring-opening enzyme activity, and high mineralization (0.47 g Cl- /g m -dichlorobenzene , 0.65 g co2 /g m -dichlorobenzene , 0.15 g DCW /g m -dichlorobenzene ). In addition, the performance in a biotrickling filter (BTF) was evaluated through removal efficiency and pressure drop values with increasing inlet loading rate from 4.10 to 122.57 g/m 3 /h at three empty bed residence time points (30 s, 60 s, and 90 s). The results demonstrated that strain DH-1 possessed high removal efficiency and stable operation in a BTF.
研究领域:
环境生物学
·
微生物学
·
污染控制技术
✓ 已验证
DOI
高影响因子
Food Bioscience
·
2025
·
IF 5.9
Xing Chen,Menglin Jiang,Jie Liu,Genyi Zhang
Whole grain food is a type of healthy food with many beneficial effects, but the fundamental mechanism is still illusive. In the current study, a whole grain component (WGC), as a whole grain model, was prepared by mimicking the endosperm cellular structure through encapsulating glucomannan (dietary fiber) and starch in a matrix formed by polysaccharide gelation. A high level of slowly digestible starch (SDS) (>50 %) in WGC was observed from an in vitro digestion experiment. When the in vivo test of WGC was conducted, a reduced postprandial glycemia and an increased GLP-1 response were observed, which confirmed the stimulation effect of WGC on the secretion GLP-1, an incretin hormone with numerous health benefits. Further study showed that the blood glucose level (from 29.2 to 9.5 mmol/L) and the biomarker HbA1c (from 10.5 to 6.4 %) in diabetic mice were significantly reduced under the condition of WGC-containing diet (WGC-diet). The β-cell function and insulin sensitivity were also significantly improved. Furthermore, the WGC-diet reversed the dysbiosis with increased production of healthy short-chain fatty acids, which are likely the basis to the secretion of GLP-1. Gene expression revealed that WGC-diet activated the GLP-1 signaling pathway, leading to an increased secretion of insulin and improved β-cell function, which all contribute to the glycemic control in diabetic mice. Thus, GLP-1, as pleotropic incretin hormone, could be an important mechanism to the various health benefits of whole grain foods.
研究领域:
营养学
·
分子生物学
·
医学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Dan Zhao,Xianfa Zhang,Wenjing Wang,Lili Sui,Xiaojing Bai,Haixiang Song,Chuanyu Guo,Yingming Xu,Xiaoli Cheng,Shan Gao,Lihua Huo
Early and painless detection of type-I diabetic patients by detecting acetone concentration in their exhaled breath would be a rapid and effective means. TiO 2 materials with exposed active (0 0 1) facet were synthesized mostly with HF as raw material, and the particle size was relatively large. In this work, (0 0 1) and (1 0 1) facets co-doped TiO 2 nanocubes with particle size < 50 nm were successfully prepared by a simple one-step hydrothermal process assisted by the ionic liquid ([Bmim][BF 4 ]) as the fluorine source and morphology modifier. Due to the exposure of the active (0 0 1) facets, the sensor exhibited good gas response to acetone gas at a low operating working temperature (OWT) of 170 °C with a detection limit as low as 30 ppb and a response time of only 2.2 s for 100 ppm acetone gas, and also relatively excellent selectivity, reproducibility, moisture resistance and long-term stability. It is worthy to point that, the changes of acetone concentration were compared in exhaled gas from healthy people and type-I diabetic patients, and the responses to exhaled gas of type-I diabetic patients were also tracked at different time in the same day. This provides significant convenience for early and painless diagnosis of type-I diabetic patients.
研究领域:
材料科学
·
医学
·
传感器技术
✓ 已验证
DOI
高影响因子
Nano Research
·
2023
·Vol. 16
·期 12
·13366-13374
·
IF 9.9
Lin Chaoxin,Kim Kumchol,Wang Zuochao,Yan Zhuang,Tang Zhiyong,Liu Yaling
Integration and synergy of the unique functions of different components have been developed into one of the most convenient and effective ways to construct the composite advanced materials with collective properties and improved performances. In this work, the mace-like tetrathiafulvalene-tetracyanoquinodimethane (TTF-TCNQ)/HKUST-1 composite structures with single single-crystalline TTF-TCNQ submicrorods covered by ordered HKUST-1 nanosheet arrays were successfully constructed by an efficient TTF-TCNQ seed-mediated growth approach. Impressively, thanks to the synergetic and complementary effects between TTF-TCNQ and HKUST-1, the sensors based on such mace-like TTF-TCNQ/HKUST-1 composite structures not only displayed an experimental detection limit of 10 part per billion (ppb) for NO 2 detection, but also exhibited outstanding selectivity even if the concentration of the interfering gases was 10 times that of NO 2 . Meanwhile, good reproducibility and rapid response were also achieved. This work opens the avenue for creation of novel high-performance sensing materials for application in gas sensing.
研究领域:
材料科学
·
化学传感
·
纳米技术
·
气体传感器
✓ 已验证
DOI
高影响因子
CANADIAN JOURNAL OF CHEMICAL ENGINEERING
·
2025
·
IF 1.9
Yu-cheng Jiang,Bao-guang Zhu,Xiang-li Long
The oxidation of 1-(4-chlorophenyl)-pyrazolidin-3-one to 1-(4-chlorophenyl)-1H- pyrazol-3-ol by air can be accelerated by the Co(II)@AC catalyst prepared by loading Co(II) on activated carbon with wet impregnation method. ZnCl 2 solution has been used to treat activated carbon to ameliorate the catalytic ability of Co(II)@AC catalyst. The experiments indicate that the optimal catalyst is made by immersing activated carbon in 0.7 mol/L ZnCl 2 solution at 50°C for 6 h with a liquid/solid ratio of 30/1 (mL/g) followed being calcined at 700°C for 5 h at a heating rate of 5°C/min under N 2 protection. The 1-(4-chlorophenyl)-1H-pyrazol-3-ol concentration catalyzed by the catalyst loaded on the best carbon reaches 0.01953 kg/L, which is 27.56% higher than that catalyzed by the catalyst loaded on the original carbon. The characterization results manifest that the modification with ZnCl 2 enriches the porous structure and increases the acidic groups on the surface of activated carbon. The conversion of 1-(4-chlorophenyl)-pyrazolidin-3-one is mainly determined by the physical structure of the activated carbon while the selectivity to 1-(4-chlorophenyl)-1H- pyrazol-3-ol is largely affected by the chemical characteristics of the activated carbon.
研究领域:
化学
·
催化材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Zhen Jiao,Mengnan Zhang,Lixia Yang,Yuxuan Wang,Jiajie Fu
To evaluate the feasibility of extraction of 1-methylimidazole from its low-concentration aqueous solution by ionic liquids, the liquid–liquid equilibrium of the ternary system of water + 1-methylimidazole + ionic liquid ([Hmim][PF6], [Omim][PF6], or [Omim][BF4]) was determined at 303.15 K and atmospheric pressure. The distribution coefficient and selectivity were calculated in accordance with the experimental results. The effects of the anion and cation of ionic liquids on the separation ability were discussed. The results indicated that the extraction capacity increased with increasing cationic carbon chain length, and the change of anions significantly affected the distribution coefficient and selectivity. As expected, the three ionic liquids were feasible as extractants for separating 1-methylimidazole from water. It also indicated that [Omim][PF6] was a more suitable extractant than [Hmim][PF6] and [Omim][BF4] for the extraction. The highest distribution coefficient and selectivity of [Omim][PF6] could reach 1.71 and 111.92, respectively, indicating [Omim][PF6] as a good choice for extracting 1-methylimidazole from water. In addition, the non-random two-liquid model was employed to successfully correlate the experimental data with a root-mean-square deviation of less than 0.0188. Moreover, a GUI-MATLAB tool was used to verify the consistency of the correlated parameters.
研究领域:
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL AND ENGINEERING DATA
·
2022
·
IF 3.119
Yingmin Yu,Xiaocheng Zhang,Lingxiao Yi,Min Li,Fangyu Zhang,Jiajun Wei
Liquid–liquid equilibrium (LLE) data of ternary systems {2-ethyl-1-hexanol + ethylene glycol + water/n-heptane} were measured at 298.2, 308.2, and 318.2 K under 101.3 kPa. The distribution coefficient (D) and selectivity coefficient (S) of the systems were calculated to analyze the extraction ability of the two extractants that separate 2-ethyl-1-hexanol and ethylene glycol. Meanwhile, the NRTL and UNIQUAC activity coefficient models were used to correlate the experimental data and the different model parameters were obtained by data regression. The root-mean-square deviation (RMSD) between the calculated and experimental values was less than 0.96%, indicating that both models have a reasonable correlation with the experimental data of the ternary system and can accurately predict the experimental data. GUI-MATLAB has validated the binary interaction parameters.
研究领域:
化学工程
·
热力学
✓ 已验证
DOI
高影响因子
Food & Function
·
2025
·
IF 5.4
Qi Gu,Litao Wang,Mingyue Xu,Wan-Mei Zhou,Guosheng Liu,Haiting Tian,Thomas Efferth,Chenlu Wang,Yujie Fu
Phloretin is a natural dihydrochalcone with a variety of biological activities. Its potential in modulating lipid metabolism in vitro and in vivo with HepG2 and C. elegans was investigated in this study. Phloretin significantly diminished lipid accumulation and ROS levels, mitigated the degree of lipid peroxidation, and ameliorated mitochondrial dysfunction in HepG2 cells. The expression levels of lipid synthesis genes (SREBP and FASN) were downregulated, while PI3K-AKT related genes (AKT, FOXO, MTOR) were upregulated. Furthermore, phloretin significantly alleviated the detrimental effects of lipid accumulation on growth indices and locomotor ability in C. elegans. It also reduced lipofuscin, ROS level as well as glucose and triglyceride contents, significantly affected amino acid and lipid metabolism pathways based on metabolomics profiles and analysis. Gene expression levels of sbp-1, mdt-15, fat-5, fat-6, and fat-7 were markedly down-regulated following treatment with phloretin, while daf-16, age-1 and skn-1were significantly up-regulated. Tests with mutant C. elegans strains of daf-16, age-1, sbp-1 and nhr-49 further confirmed that the phloretin-induced decrease in lipid accumulation was attributed to the inhibition of lipid biosynthesis pathway by IIS and sbp-1/SREBP. Our study indicated that phloretin exerted hypolipidemic effects in vitro and in vivo, providing a basic foundation for considering phloretin as a phytochemical candidate for regulating lipid metabolism and preventing hyperlipidemia.
研究领域:
代谢生物学
·
分子生物学
·
药理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）