ADVANCED MATERIALS
·
2023
·Vol. 35
·期 45
·2304285
·
IF 29.4
Yiqi Wei,Yaxiong Yang,Zichong Chen,Panyu Gao,Qihang Ma,Mingxi Gao,Chenhui Yan,Zhijun Wu,Yinzhu Jiang,Jian Chen,Xuebin Yu,Zhenglong Li,Xin Zhang,Yongfeng Liu,Mingxia Gao,Wenping Sun,Hongge Pan
LiBH 4 is a promising solid-state electrolyte (SE) due to its thermodynamic stability to Li. However, poor Li-ion conductivities at room temperature, low oxidative stabilities, and severe dendrite growth hamper its application. In this work, a partial dehydrogenation strategy is adopted to in situ generate an electronic blocking layer dispersed of LiH, addressing the above three issues simultaneously. The electrically insulated LiH reduces the electronic conductivity by two orders of magnitude, leading to a 32.0-times higher critical electrical bias for dendrite growth on the particle surfaces than that of the counterpart. Additionally, this layer not only promotes the Li-ion conductance by stimulating coordinated rotations of BH 4 − and B 12 H 12 2− , contributing to a Li-ion conductivity of 1.38 × 10 −3 S cm −1 at 25 °C, but also greatly enhances oxidation stability by localizing the electron density on BH 4 − , extending its voltage window to 6.0 V. Consequently, this electrolyte exhibits an unprecedented critical current density (CCD) of 15.12 mA cm −2 at 25 °C, long-term Li plating and stripping stability for 2700 h, and a wide temperature window for dendrite inhibition from −30 to 150 °C. Its Li-LiCoO 2 cell displays high reversibility within 3.0–5.0 V. It is believed that this work provides a clear direction for solid-state hydride electrolytes.
研究领域:
材料科学
·
电化学
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DOI
高影响因子
PHYTOCHEMICAL ANALYSIS
·
2025
·
IF 2.6
Tao-Tao Xue,Dong-Xuan Zheng,Qiang Hou,Li-Mei Wen,Bao-Juan Wang,Ruo-Yu Geng,Qian-Qian Wang,Wu Dai,Li-Ying Tian,Sheng-Qi He,Jian-Hua Yang,Jun-Ping Hu
Introduction Cistanche deserticola Ma (CD), an edible and medicinal plant native to Xinjiang, Inner Mongolia, and Gansu in China, is rich in bioactive polysaccharides known for their health-promoting properties. The polysaccharides of C. deserticola (CDPs) have been shown to possess a range of beneficial activities, including immunomodulatory, anti-aging, antioxidant, and anti-osteoporosis effects. Objective This study seeks to identify the optimal conditions for extracting CDPs using hot water. Additionally, it aims to evaluate their chemical properties, antioxidant activity, hypoglycemic effects, and cytotoxicity. The findings will provide a theoretical foundation for the potential use of CDPs in functional foods and pharmaceuticals. Methodology The study employed response surface methodology to optimize the hot water extraction conditions for CDPs. The extracted CDPs were characterized using a range of chemical, spectroscopic, and instrumental analyses. Furthermore, their antioxidant activity, hypoglycemic effects, and cytotoxicity were evaluated through relevant assays to assess their potential health benefits. Results Under optimal conditions, the yield of CDPs was 45.85% ± 1.91%. CDPs were identified as acidic heteropolysaccharides with a wide molecular weight distribution, ranging from 0.3 to 128.2 kDa. They were composed primarily of glucose (51.21%), arabinose (32.86%), galactose (17.88%), and smaller amounts of galacturonic acid (4.66%), rhamnose (1.85%), mannose (1.32%), glucosamine hydrochloride (1.08%), and xylose (0.56%). Antioxidant assays demonstrated that CDPs exhibited significant free radical scavenging activity, metal ion chelation, and reducing power. Additionally, CDPs inhibited α-glucosidase and α-amylase in vitro through a mixed-type mechanism, as well as static fluorescence quenching. Cytotoxicity assays showed that CDPs were nontoxic to L02 and AML12 cells. Conclusion This study offers a theoretical foundation for the potential use of CDPs in functional foods and pharmaceuticals and provides valuable insights for the development of new antioxidant and hypoglycemic agents from natural sources.
研究领域:
植物化学
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药理学
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食品科学
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产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Wei Jia,Jingyuan Qiao,Guangchao Shi,Lingzi Zhao,Wen Zhao,Feipeng Liu,Yiyun Fang,Jingzhi Shang,Zi-Qiang Rong
Hybrid quasi-two-dimensional (quasi-2D) perovskites have attracted great interest due to their excellent photovoltaic and light-emitting properties, which enable the rapid development of high-performance perovskite-based solar cells, light-emitting diodes, and lasers. Although many efforts have been made to improve the quality and stability of organic-inorganic perovskites, the controlled synthesis of high-quality layered perovskites remains challenging. Here, single-crystalline quasi-2D (HA) 2 (MA) n-1 Pb n I 3n+1 perovskites with layer numbers of n from 1 to 3 have been synthesized in a controllable manner, exhibiting stable lattice structures and tunable optical emission. Structurally, hexylamine (HA) with longer alkyl chains was used as an organic spacer in Ruddlesden-Popper (RP) phase perovskites to improve the chemical stability of perovskites. Various ratios of precursor materials were adopted for separating pure and large-scale quasi-2D (HA) 2 (MA) n-1 Pb n I 3n+1 perovskites, in which different layer-number perovskites with tunable band gaps were obtained with the modulated fluorescence lifetimes . Our lattice structural and fluorescence-lifetime characterizations of RP-phase perovskites provide critical information on the emerging quasi-2D perovskite-crystal systems and their fluorescence relaxation dynamics. The employed strategy to synthesize high-quality perovskites (HA) 2 (MA) n-1 Pb n I 3n+1 is technically essential to develop the rising perovskite-based photovoltaic and light-emitting applications.
研究领域:
材料科学
·
光学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF FOOD SCIENCES AND NUTRITION
·
2015
·
IF 1.206
Qingyu Wang,Zhongyao Du,Hao Zhang,Liang Zhao,Jing Sun,Xiaonan Zheng,Fazheng Ren
This study aimed to evaluate the beneficial effects of polyphenol extract of adlay (Coix lacryma-jobi L. var. ma-yuen Stapf.) (PEA) on gut microbiota in rats fed a high-cholesterol diet (HCD). Rats were fed HCD containing 1% cholesterol (w/w), with or without a daily intragastric supplement of 200 mg/kg body weight PEA. Results showed that PEA significantly ameliorated increases in serum cholesterol and low-density lipoprotein cholesterol values and significantly restored high-density lipoprotein cholesterol values. The HCD-induced imbalance of gut microflora was modulated by the consumption of PEA. Most bacterial strains influenced by PEA are related to host lipid metabolism. The abundances of one Erysipelotrichales strains and two Clostridia strains were lower in the PEA group than in the control. Phenolic compounds in PEA were identified by HPLC. The findings indicate that PEA may be a useful dietary supplement in the treatment of elevated cholesterol levels and the imbalanced gut microbial ecology.
研究领域:
营养学
·
微生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Frontiers in Cardiovascular Medicine
·
2022
·
IF 5.846
Wenqing Gao,Han Wang,Yanwu Liu,Qin Tang,Peng Wu,Tingting Lin,Tong Li,Di Sun
Thromboembolism caused by the use of extracorporeal membrane oxygenation (ECMO) remains common among patients with existing heart diseases and contributes to significant morbidity and mortality during the COVID-19 pandemic. Various surface modification strategies have been proposed, showing that the methacrylated alginate (MA-SA) hydrogel layer is transparent, which aids the observation of the thromboembolism from the inner wall of the tubing. In the combined dynamic and static blood of ECMO tubing inner surface in vitro experiments, it was also demonstrated that the adhesion of blood clots to the surface of vessels was remarkably reduced, and the MA-SA-based hydrogel coating could significantly prolong the activated partial thrombin time and block the endogenous coagulation. The favorable properties of natural polysaccharides of hydrogel coatings make them the best surface material choices to be applied for blood-contacting medical devices and significantly improve anticoagulant performance.
研究领域:
生物材料
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生物医学工程
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止血与血栓
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医疗器械
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano-Micro Letters
·
2020
·Vol. 12
·期 1
·1-16
·
IF 12.264
Zhang Shucong,Wang Wenbin,Hu Feilong,Mi Yan,Wang Shuzhe,Liu Youwen,Ai Xiaomeng,Fang Jiakun,Li Huiqiao,Zhai Tianyou
The 2D CoOOH sheet-encapsulated Ni 2 P into tubular arrays electrocatalytic system with expediting mass transport, structural stability, and tuned electron was conceptually proposed.
The designed electrocatalysts realize expectant 1000 mA cm −2 -level-current-density hydrogen evolution in neutral water for over 100 h.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Miaoran Xu,Hao Dang,Mengfei Wang,Shuai Zhang,Qiaojuan Jia,Jia-Yue Tian,Minghua Wang,Miao Du
The sensitive determination of penicillin G (PG) in complex environments is essential for guaranteeing food safety and human health. Herein, a new dual-modal electrochemical (EC)–photoelectrochemical (PEC) aptasensing strategy has been proposed based on an Fe-doped covalent triazine framework (denoted as Fe-MA-Dha-CTF) synthesized by using 2,5-dihydroxyterephthalaldehyde (Dha) and melamine (MA) as building blocks and utilized to detect trace PG. Compared with the platform based on metal-free MA-Dha-CTF, the constructed Fe-MA-Dha-CTF demonstrated enhanced photoelectric conversion efficiency, superior electrochemical activity, and high bioaffinity toward the PG-targeted aptamer. The established Fe-MA-Dha-CTF-based dual-modal EC–PEC aptasensor exhibited ultralow limits of detection of 0.08 and 0.7 fg mL −1 as deduced by using EC and PEC techniques, respectively, within a wide PG concentration range of 1 fg mL −1 to 10 ng mL −1 . Moreover, the proposed EC–PEC aptasensor exhibited high selectivity, good stability, acceptable reproducibility, and great practicability in diverse real samples. The CTF-based dual-modal aptasensing approach presented here can extend the application of porous-organic frameworks in biosensing.
研究领域:
分析化学
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生物传感器
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材料科学
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食品安全
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2023
·
IF 5.2
Shaoyin Wang,Jianqiang Bi,Guandong Liang,Jilie Yuan,Yueguang Chen,Linjing Qiao
The TiB 2 fibers were prepared by a chloride-assisted carbothermic method accompanied with the vapor-liquid-solid (VLS) mechanism. The influences of TiO 2 , B 2 O 3 , C 12 H 22 O 11 , and calcination temperature on the yield of TiB 2 fibers were investigated. In addition, the effects of TiB 2 fibers content on the electromagnetic (EM) parameters and microwave absorption (MA) properties of TiB 2 fibers/paraffin composite was studied in detail. The TiB 2 fibers/paraffin composite showed excellent microwave absorption performance, with an optimized reflection loss ( RL ) of −46.63 dB at 14 GHz and a thickness of 1.5 mm. Moreover, it exhibited a broad effective absorption bandwidth (EAB) ( RL < −10 dB) of 3.9 GHz, ranging from 12 to 15.9 GHz. TiB 2 fibers exhibit promising potential as materials for high-temperature applications in the field of MA.
研究领域:
材料科学
·
电磁波吸收
·
高温应用
✓ 已验证
产品关联
DOI
高影响因子
FOOD RESEARCH INTERNATIONAL
·
2024
·
IF 7
Shuxin Zhou,Xinjing Tang,Ferenc Hegyi,András Nagy,Krisztina Takács,Zsolt Zalán,Guangjing Chen,Muying Du
Adlay bran is known for its nutrient-rich profile and multifunctional properties, and steam explosion (SE) is an emerging physical modification technique. However, the specific effects of SE on the activity composition and antioxidant capacity of adlay bran soluble dietary fiber (SDF) during in vitro digestion, as well as its influence on gut microbiota during in vitro fermentation, remain inadequately understood. This paper reports the in vitro digestion and fermentation characteristics of soluble dietary fiber from adlay bran modified by SE (SE-SDF). Compared with the untreated samples (0-SDF), most of the phenolic compounds and antioxidant capacity were significantly increased in the SE-SDF digests. Additionally, SE was beneficial for adlay bran SDF to increase the content of acetic acid, propionic acid and total short-chain fatty acids (SCFAs) in fermentation broth during in vitro fermentation. SE-SDF could promote the growth of beneficial bacteria while inhibiting the proliferation of pathogenic microbes. Our research indicates that SE-SDF shows strong antioxidant properties after in vitro digestion and plays a pivotal role in regulating gut microbiota during in vitro fermentation, ultimately enhancing human intestinal health.
研究领域:
食品科学
·
营养学
·
微生物学
·
生物技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY
·
2022
·
IF 8.857
Wei Zhou,Shuai Chen,Xiaoxiao Meng,Jiayi Li,Yuming Huang,Jihui Gao,Guangbo Zhao,Yong He,Yukun Qin
The application of water electrolysis for hydrogen production is inhibited by high energy consumption, primarily due to the sluggish anodic oxygen evolution reaction (OER). Replacing OER with a thermodynamically favorable reaction is significant to decrease the energy consumption. Coal-assisted water electrolysis (CAWE), with a theoretical potential of only 0.21 V, received special attention. However, the conventional CAWE suffers from poor stability to maintain high current, the continuous collision of coal particles with electrodes and membranes also causes the abrasion of these components. Here, a two-step CAWE system with the electrolysis system (ES) and hydrothermal system (HS) was proposed. The homogeneous ES generates H 2 assisted by the anodic Fe 2+ oxidation (Fe 2+ →Fe 3+ ), while the heterogeneous HS supplies Fe 2+ via the reduction of Fe 3+ by coal slurry (Fe 3+ →Fe 2+ ). Results showed that key operating parameters significantly affected the Fe 3+ reduction by coal in HS. Additionally, a homemade continuous proton exchange membrane electrolyzer was used to test the two-step CAWE concept. The current density can achieve 154 mA/cm 2 and remain 136 mA/cm 2 after 5 cycles, at a low cell voltage of 1.2 V, corresponding to a low power consumption of 2.87 kWh/Nm 3 (H 2 ).
研究领域:
能源科学
·
化学工程
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
BIOMEDICAL CHROMATOGRAPHY
·
2023
·Vol. 37
·期 11
·e5732
·
IF 1.8
Hailing Huang,Bailu Duan,Sili Zheng,Yan Ye,Dongning Zhang,Zhuang Huang,Shanshan Wang,Fengyun Zhang,Ping Huang,Fang Huang,Lintao Han
The current study utilizes a comprehensive network pharmacology and metabolomics analysis to investigate the mechanism of action of Ma-Mu-Ran Antidiarrheal Capsules (MMRAC) for the treatment of ulcerative colitis (UC). In this study, we established a mouse model of UC using dextran sulfate sodium. Colonic tissues were collected from mice and then subjected to hematoxylin and eosin staining, as well as histopathological analysis, to assess the therapeutic effect of MMRAC. Furthermore, we assessed the mechanisms through which MMRAC combats UC by employing integrated metabolomics and network pharmacology strategies. Lastly, we validated the key targets identified through western blot and molecular docking. An integrated network of metabolomics and network pharmacology was constructed using Cytoscape to identify eight endogenous metabolites involved in the therapeutic action of MMRAC on UC. Further comprehensive analyses were focused on four key targets and their associated core metabolites and pathways. The results of western blot and molecular docking demonstrated that MMRAC could modulate key targets and their expression levels. The cumulative results indicated that MMRAC restored intestinal function in UC, reduced inflammatory responses, and alleviated oxidative stress by influencing the methionine and cysteine metabolic pathways, as well as the urea cycle. In addition, it had an impact on arginine, proline, glutamate, aspartate, and asparagine metabolic pathways and their associated targets.
研究领域:
药理学
·
代谢组学
·
炎症性肠病
·
网络分析
·
分子生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
IONICS
·
2021
·Vol. 28
·期 2
·767-777
·
IF 2.817
Zang Guojing,He Min,Liao Youhao,Li Minsui,Hong Mingyao,Li Weishan
To improve the comprehensive performance of fibrous membrane based on poly(methyl vinyl ether-alt-maleic anhydride) P(MVE-MA)- and poly(vinylidene fluoride-co-hexafluoropropylene) P(VdF-HFP)-blended copolymers, a small amount of nano-Al 2 O 3 was doped by electrospinning technique to apply for high-energy-density cathode material of nickel-rich LiNi 0.8 Co 0.15 Al 0.05 O 2 (NCA) based Li-ion battery. The results indicated that the electrospinning membrane and corresponding gel polymer electrolyte (GPE) only doped with 3.0 wt.% nano-Al 2 O 3 presented the proper structure and delivered the best electrochemical characterization. Due to the uniform distribution of nanoparticles on the fibers with higher density, the specific surface area and porosity of the fiber membrane were increased, leading to the improved fracture stress of 172.0 MPa for the membrane and ionic conductivity of 2.1 × 10 −3 S cm −1 for the GPE at room temperature. Contributed from the proper pore structure and the enhanced interfacial stability, the capacity retention of 89.4% was achieved for the Li/GPE/NCA coin cell after 200 cycles in the voltage range of 3.0 V and 4.3 V under room temperature using the GPE doped with 3 wt.% Al 2 O 3 , compared with that of 63.6% for the GPE without nanoparticles. Similarly, the discharge capacity of the coin cell under 7 C rate (123.2 mAh g −1 ) maintained 65% of that at 0.3 C (189.4 mAh g −1 ), showing good rate performance of the developed GPE. Therefore, the significant improvement in electrochemical stability of the GPE achieved by doping a small number of nanoparticles provided a simple and feasible solution for the development of high-energy-density Li-ion batteries.
研究领域:
材料科学
·
电化学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）