Energy & Environmental Science
·
2011
·Vol. 4
·期 3
·1037-1042
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IF 9.488
Chunyu Du,Cuihua Gao,Geping Yin,Meng Chen,Long Wang
In this paper, we demonstrate that a novel silicon electrode with a large amount of nanopores can be fabricated by an in-situ thermal generating approach using triethanolamine as a sacrificing template. The fabrication process is simple, green, low cost, and easy to be scaled up. This electrode achieves high reversible capacities (2500 mAh g−1) with excellent cycling stability (∼90% capacity retention after 100 charge–discharge cycles), showing great potential as a high-performance anode for lithium-ion batteries. It is revealed that the high void volume with pore size of <200 nm can both enlarge the interface between active silicon particles and the electrolyte, and accommodate the severe volume change of silicon, thus leading to remarkably improved reversible capacity and cycling stability. The design concept and the fabrication approach used in the nanoporous silicon electrode may also be extended to other electrodes for electrochemical applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2022
·
IF 7.926
Shinuo Wang,Yinghao Ruan,Haosheng Sun,Ludong Yi,Di Liu,Jun Wang,Zhaohong Zhang,Dawei Fang
Hydrodynamic cavitation (HC) technology with double parallel orifice plates can further enhance the degradation effect and heat generation efficiency and play an important role in practical large-scale organic wastewater treatment and energy saving. In this study, based on the optimal hole numbers in single orifice plate, the influences of the hole number and distribution in double parallel orifice plate on Basic Violet 1 (BV-1) degradation and heat generation are studied in detail. Furthermore, the effects of some experimental parameters (inlet pressure, initial concentration, solution temperature and solution volume) on BV-1 degradation and heat generation in 4 + 4 parallel orifice plate HC system are deeply studied. Then, the effect of added H 2 O 2 on the BV-1 degradation and heat generation is also investigated. In addition, the capturing experiments of free radicals (•OH and •O 2 - ) are carried out. Finally, the BV-1 degradation pathway and possible degradation mechanism are proposed by analyzing the data of UV–vis spectrum, LC-MS and total organic carbon (TOC). The final results show that the solution temperature can be raised from 20.05 °C to 57.71 °C under the experimental conditions of 4 + 4 parallel orifice plates, 3.0 bar inlet pressure , 5.0 L total solution volume and 10 mg/L initial concentration for 90 min continuous circulation and the BV-1 degradation ratio can be achieved by 75.98 %. The system can generate 785.40 kJ heat at 48.50 USD/m 3 cost and achieve 29.09 % thermal efficiency . For 1:30 molar ratio of BV-1 and H 2 O 2 , the solution temperature can be further raised to 63.32 °C in 90 min continuous cycling. 95.38 % BV-1 degradation ratio can be obtained and the 909.72 kJ heat can be generated, reaching the 33.69 % thermal efficiency. It is hoped that this work can provide a new strategy for enhancing the degradation of organic dyes and resource utilization of heat by using double parallel orifice plate HC technology.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
ANALYTICAL CHEMISTRY
·
2015
·
IF 5.636
Juan Qiao,Yoon-Ho Hwang,Chuan-Fang Chen,Li Qi,Ping Dong,Xiao-Yu Mu,Dong-Pyo Kim
Intracellular temperature has a fundamental effect on cellular events. Herein, a novel fluorescent polymer ratiometric nanothermometer has been developed based on transferrin protein-stabilized gold nanoclusters as the targeting and fluorescent ratiometric unit and the thermosensitve polymer as the temperature sensing unit. The resultant nanothermometer could feature a high and spontaneous uptake into the HeLa cells and the ratiometric temperature sensing over the physiological temperature range. Moreover, the precise temperature sensing for intracellular heat generation in HeLa cells following calcium ions stress has been achieved. This practical intracellular thermometry could eliminate the interference of the intracellular surrounding environment in cancer cells without a microinjection procedure, which is user-friendly. The prepared new nanothermometer can provide tools for unveiling the intrinsic relationship between the intracellular temperature and ion channel function.
研究领域:
生物化学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ELECTROCHIMICA ACTA
·
2023
·
IF 6.6
Siyuan Cheng,Lihua Jiang,Zesen Wei,Xiangdong Meng,Qiangling Duan,Huahua Xiao,Jinhua Sun,Qingsong Wang
Semi-solid lithium slurry battery combines the advantages of the high energy density of lithium-ion battery and the flowability of flow battery electrodes and has attracted attention in energy storage. Elucidating the heat generation during cycling is crucial for evaluating the safety. However, there is a relative lack of research in this field of semi-solid lithium slurry battery. Herein, the heat generation of lithium iron phosphate (LiFePO 4 ) semi-solid lithium slurry battery during cycling under specific cycling protocols is investigated in this work. The results show that the battery has lower heat generation when cycling at an ambient temperature of 35–50 ℃ and a charging cutoff voltage below 4.0 V, meanwhile, it maintains considerable capacity. However, when the charging cutoff voltage exceeds 4.4 V, the cyclic heat generation of the battery increases significantly, and the capacity attenuates significantly. Meanwhile, the classical equation for calculating battery heat generation of lithium-ion battery is no longer reliable. This is mainly because the electrolyte content of the semi-solid lithium slurry battery is too high (over 80 %), and at high charging cutoff voltage, the side decomposition reactions of the electrolyte increase significantly. Subsequent characterization of electrode materials also confirms this inference. This study can provide a clearer understanding of the safety of semi-solid lithium slurry battery and has guiding implications for industrial applications.
研究领域:
能源存储
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR AND CELL BIOLOGY OF LIPIDS
·
2025
·
IF 3.3
Zhixin Zhang,Linli Zhao,Jiahui Wang,Hao Chen,Yan Lin,Fangbin Wang,Lu Wang,Juan Chen,Jian Liu,Xian Zhang
In beige adipocytes, UCP1-dependent thermogenesis can be driven by intracellular reactive oxygen species (ROS) generation. While ROS elevation also induces mast cell activation, serotonin synthesis and release from mast cells inhibits beige progenitor cell proliferation and browning. As a natural antioxidant and mast cell stabilizer, luteolin promotes adipocyte thermogenesis and inhibits mast cell activation. Thus, to activate adipocyte thermogenesis, how luteolin regulates ROS level in beige adipocytes and mast cells needs to be further investigated. In this study, mouse subcutaneous stromal vascular fraction (SVF) cells are induced to differentiate into beige adipocytes, and mouse bone marrow-derived mast cells (BMMCs) are activated with hydrogen peroxide (H 2 O 2 ). Intracellular ROS level is augmented in differentiated beige adipocytes and H 2 O 2 -activated BMMCs, and H 2 O 2 -activated BMMCs inhibited brown differentiation of SVF cells and thermogenesis of beige adipocytes. In beige adipocytes, unlike synthetic antioxidant N -acetylcysteine (NAC), luteolin elevates the expression of thermogenic and beige-selective marker genes and intracellular ROS generation. Contrarily, luteolin inhibits H 2 O 2 -induced mast cell activation and ROS generation. Further, luteolin partially reverses the inhibitory effects of H 2 O 2 -activated BMMCs on the brown differentiation of SVF cells and the thermogenesis of beige adipocytes. Molecular mechanistic studies demonstrate that luteolin regulates intracellular ROS level in beige adipocytes and mast cells via the nuclear factor erythroid 2-related factor 2 (Nrf2)/Catalase pathway. Altogether, as a ROS regulator, luteolin contrarily affects intracellular ROS generation in beige adipocytes and mast cells, and hence elevates adipocyte browning.
研究领域:
分子生物学
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代谢研究
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药理学
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF ADVANCED MANUFACTURING TECHNOLOGY
·
2020
·Vol. 107
·期 1
·73-83
·
IF 2.633
Su Guosheng,Xiao Xiaodong,Du Jin,Zhang Jingjie,Zhang Peirong,Liu Zhanqiang,Xu Chonghai
Since Dr. Carl Salomon proposed the well-known hypothesis on cutting temperatures in 1931, the debate on the hypothesis has never stopped. It shows that evolutions of temperatures with the increase of cutting speed measured at different points are different. From the tool wear and surface integrity point of view, this paper focuses on the evolutions of chip temperature (Chip temp.), tool-chip contact temperature (T-C temp.), and tool-workpiece contact temperature (T-W temp.) with the increase of cutting speed from low (100 m/min) to very high (7000 m/min). First, the cutting heat generation and the temperature increment in machining are theoretically analyzed. Then the influences of chip shape and mechanical property variations with the increase of cutting speed on the temperatures are analyzed. Finally, the cutting temperatures are semiquantitatively derived from chip colors and other heat characteristics in the chip and cutting tool obtained in cutting experiments: evolutions of Chip temp., T-C temp., and T-W temp. with the increase of cutting speed are presented based on the experiment results. The influence of chip shape and temperature variation on tool wear are also discussed.
研究领域:
机械工程
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制造工艺
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材料加工
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热力学
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表面工程
✓ 已验证
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2023
·
IF 22.1
Shanliang Jiang,Changhao Li,Yaseen Muhammad,Ying Tang,Ruimeng Wang,Junjie Li,Jing Li,Zhongxing Zhao,Zhenxia Zhao
Construction of highly-active photothermal catalysts featuring merits of high quantum efficiency and superior heat resistance is a great challenge during volatile organic compounds (VOCs) degradation under high humidity. Herein, a facile solvent-induced dimensionality reduction strategy was proposed to engineer a nanosheeted and polycrystalline Cu/Mn-based catalyst (M-Cu/MnO x ) having interfacial oxygen vacancies for enhanced photo-thermal catalytic degradation of toluene under highly humid conditions. Unique Cu-mediated δ-MnO 2 /Mn 3 O 4 nanosheets with high surface area exhibited excellent light absorptivity and photogenerated carrier separation efficiency, as well as superior light-driven thermogenesis. It realized ultra-high (92.8%) toluene conversion and deep mineralization (84.4%) under RH = 80% and continuous catalytic reaction (200 h). Its toluene degradation rate exhibited 3.5–71.9 times higher than reported state-of-the-art photothermal catalysts. The newly designed M-Cu/MnO x catalyst provides a promising, low-cost and alternative for the efficient degradation of toluene and other similar VOCs under humid conditions on large-scale operations.
研究领域:
材料科学
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环境科学
·
催化
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2019
·Vol. 24
·期 12
·2266
·
IF 3.06
Xueying Liu,Xiaoku Ran,Muhammad Riaz,Haixue Kuang,Deqiang Dou,Decheng Cai
The major objective of this study was to investigate the anti-chronic nonbacterial prostatitis (CNP) mechanism ofT. patulaby metabolomics and network pharmacology. The study demonstrated that the flavonoids and polysaccharides ofT. patulacould alleviate prostatitis by improving the level of DHT, reducing the secretion of PSA and TNF-α. Besides, both could enhance Na+/K+-ATPase activity, decrease the O2consumption, CO2production, heat production, energy expenditure of rats and promote respiratory exchange ratio of rats. Up to 28 potential biomarkers and 8 key metabolic pathways related to the treatment of CNP were elucidated by the metabolomics analysis, including phenylalanine metabolism, taurine and hypotaurine metabolism, tryptophan metabolism etc. Network pharmacology prediction also reflected the potential mechanism was associated with tryptophan metabolism and energy pathway. Generally, the potential anti-CNP mechanism of flavonoids and polysaccharides ofT. patulamight be through reducing the expression of inflammation factors, adjusting the level of hormone and regulating the amino acid metabolism, energy metabolism and glucose and lipid metabolism.Keywords:Tagetes patulaL.;chronic nonbacterial prostatitis;metabolomics;energy metabolism;network pharmacology
研究领域:
药理学
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代谢组学
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传统医学
·
前列腺疾病
✓ 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）