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In-situ Construction of Sulfur-doped g-C_(3)N_(4)/defective g-C_(3)N_(4) Isotype Step-scheme Heterojunction for Boosting Photocatalytic H_(2) Evolution

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Chinese Journal of Structural Chemistry 2022年第1期41卷 25-33页

作者： Jing Zou Guodong Liao Jizhou Jiang Zhiguo Xiong Saishuai Bai Haitao Wang Pingxiu Wu Peng Zhang Xin Li School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China Semiconductor Electronic Special Gas of Hubei Engineering Research Center JingzhouHubei 434000China State Center for International Cooperation on Designer Low-Carbon&Environmental Materials(CDLCEM) School of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450001China Institute of Biomass Engineering Key Laboratory of Energy Plants Resource and UtilizationMinistry of Agriculture and Rural AffairsSouth China Agricultural UniversityGuangzhou 510642China

The rational construction of a high-efficiency stepscheme heterojunctions is an effective strategy to accelerate the photocatalytic H_(2).Unfortunately,the variant energy-level matching between two different semiconductor confers limited the photocatalytic ***,a newfangled graphitic-carbon nitride(g-C_(3)N_(4))based isotype step-scheme heterojunction,which consists of sulfur-doped and defective active sites in one microstructural unit,is successfully developed by in-situ polymerizing N,N-dimethylformamide(DMF)and urea,accompanied by sulfur(S)***,the polymerization between the amino groups of DMF and the amide group of urea endows the formation of rich *** propulsive integration of S-dopants contributes to the excellent fluffiness and dispersibility of lamellar g-C_(3)N_(4).Moreover,the developed heterojunction exhibits a significantly enlarged surface area,thus leading to the more exposed catalytically active *** importantly,the simultaneous introduction of S-doping and defects in the units of g-C_(3)N_(4) also results in a significant improvement in the separation,transfer and recombination efficiency of photo-excited electron-hole ***,the resulting isotype step-scheme heterojunction possesses a superior photocatalytic H_(2) evolution activity in comparison with pristine g-C_(3)N_(4).The newly afforded metal-free isotype step-scheme heterojunction in this work will supply a new insight into coupling strategies of heteroatoms doping and defect engineering for various photocatalytic systems.

关键词： sulfur-doping defects isotype step-scheme heterojunction g-C_(3)N_(4) photocatalytic H_(2)

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Heat capacities and thermodynamic properties of urea phosphate and its aqueous solutions at various temperatures

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Journal of Molecular Liquids 2024年 414卷

作者： Long, Bingwen Li, Jing Zhu, Shijie Ding, Yigang Li, Wei Chi, Ruan Engineering Research Center of Phosphorus Resources Development and Utilization of Ministry of Education Key Laboratory of Green Chemical Engineering Process of Ministry of Education School of Chemical Engineering and Pharmacy Wuhan Institute of Technology Wuhan430205 China School of Chemical Engineering and Technology Tianjin University Tianjin300072 China Hubei Three Gorges Laboratory Yichang443007 China

Urea phosphate was produced through a complexation reaction of phosphoric acid and urea and subsequent cooling crystallization. The elemental composition analysis, XRD, and FTIR all confirmed that the prepared urea phosphate had high purity and good crystallinity, and showed a clear onset melting temperature of 118.12℃ and corresponding enthalpy change of 222.10 J∙g−1 in TG/DSC measurement. Meanwhile, the heat capacities of urea phosphate and its aqueous solution were carefully measured using microcalorimetry with an expanded relative uncertainty better than 2 %. The experimental results revealed that the heat capacity of urea phosphate rises rapidly with temperature, with an increase of 41 % from −20 to 100℃. The experimental heat capacity data were correlated with semi-empirical models of Maier-Kelley equation, Khodakovsky equation and Debye-Einstein equation which all give excellent reproduction of the measured data with very close average deviation around 0.5 %. The enthalpy, entropy, and Gibbs free energy of solid urea phosphate were estimated at various temperatures by integrating heat capacity against temperature with Maier-Kelley equation and the results confirmed urea phosphate is thermally quite stable below 100℃. The heat capacity of urea phosphate aqueous solution increases with concentration and temperature, and there is a strong linear relationship between the solution's heat capacity and temperature when the composition remains constant. The apparent molar heat capacity of urea phosphate in solution is positive and increases with concentration and temperature. The extrapolated partial molal heat capacity of urea phosphate is temperature independent and shows an average value of −709.4 J·K−1·mol−1. Due to the partial dissociation and partial ionization of urea phosphate in solution, the excess molar heat capacities show positive deviation from that of ideal solution, which also increases with the increase of concentration and temperature. © 2024 Elsevi

关键词： Correlation Heat Capacity Microcalorimetry Thermodynamic assessment Urea phosphate

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development and Characterization of Aluminium-Based Metal Matrix Composites

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Materials Sciences and Applications 2023年第1期14卷 1-19页

作者： M. A. Gafur Al Fahad Ahmed Raisul Abrar Surya Sabrin Soshi Pilot Plant & Process Development Centre Bangladesh Council of Scientific & Industrial Research (BCSIR) Dhaka Bangladesh Department of Naval Architecture and Marine Engineering Military Institute of Science and Technology Dhaka Bangladesh Department of MPE AUST Dhaka Bangladesh

Aluminum based metal matrix composites were fabricated using stir casting where silicon carbide and alumina were the reinforcements. Different types of properties (physical-density, mechanical-tensile, hardness, chemical-corrosion etc.) were measured and compared with base metals/alloys. The properties were significantly varied. The highest density was obtained for pure aluminium with 5% Al₂O₃ whereas the lowest was obtained for AA-4032 alloy. The highest hardness was obtained for AA-4032 with 5% Al₂O₃ whereas the lowest was obtained for pure Al with 5% Al₂O₃. The highest strength was obtained for AA-6061 with 5% coarse SiC whereas the lowest was obtained for pure Al. The highest impact strength was obtained for AA-4032 with 5% Al₂O₃ whereas the lowest was obtained for AA-6061. The corrosion resistance of all composites was lower than that of the base materials.

关键词： Al AA-6061 AA-4032 SiC Al2O3 Stir-Casting Metal Matrix Composite MMC Nanocomposites

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Pyrometallurgical Approach to Extracting Valuable Metals from a Combination of Diverse Li-Ion Batteries' Black Mass

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ACS sustainable resource management 2024年第8期1卷 1759-1767页

作者： Safoura Babanejad Hesham Ahmed Charlotte Andersson Elsayed Mousa Department of Civil Environmental and Natural Resource Engineering Process Metallurgy Minerals and Metallurgical Engineering Luleå University of Technology 97187 Luleå Sweden. Central Metallurgical Research and Development Institute P.O. Box 87 Helwan 11421 Egypt. SWERIM AB Aronstorpsvägen 1 97437 Luleå Sweden.

Li-ion batteries (LIBs) are widely used nowadays. Because of their limited lifetimes and resource constraints in manufacturing them, it is essential to develop effective recycling routes to recover their valuable elements. This study focuses on the pyrometallurgical recycling of black mass (BM) from a mixture of different LIBs. In this study, the high-temperature behavior of two types of mixed BM is initially examined. Subsequently, the effect of mechanical activation on the BM reduction kinetics is investigated. Finally, hematite is added to the BM to first be reduced by the excess graphite in the BM and second to form an Fe-based alloy containing Co and Ni. This study demonstrates that mechanical activation does not necessarily affect the kinetics of BM high-temperature behavior. Furthermore, it demonstrates that alloy-making by the addition of hematite is a successful method to simultaneously utilize the graphite in the BM and recover Co and Ni, regardless of the LIB type.

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Brain endothelial cell-derived extracellular vesicles with a mitochondria-targeting photosensitizer effectively treat glioblastoma by hijacking the blood-brain barrier

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Acta Pharmaceutica Sinica B 2023年第9期13卷 3834-3848页

作者： Thuy Giang Nguyen Cao Ji Hee Kang Su Jin Kang Quan Truong Hoang Han Chang Kang Won Jong Rhee Yu Shrike Zhang Young Tag Ko Min Suk Shim Division of Bioengineering Incheon National UniversityIncheon 22012Republic of Korea College of Pharmacy Gachon UniversityIncheon 21936Republic of Korea Department of Pharmacy Integrated Research Institute of Pharmaceutical Sciencesand BK21 PLUS Team for Creative Leader Program for Pharmacomics-based Future PharmacyCollege of Pharmacythe Catholic University of KoreaGyeonggi-do 14662Republic of Korea Research Center for Bio Materials&Process Development Incheon National UniversityIncheon 22012Republic of Korea Division of Engineering in Medicine Department of MedicineBrigham and Women’s HospitalHarvard Medical SchoolCambridgeMA 02139USA

Glioblastoma(GBM)is the most aggressive malignant brain tumor and has a high mortality *** therapy(PDT)has emerged as a promising approach for the treatment of malignant brain ***,the use of PDT for the treatment of GBM has been limited by its low blood-brain barrier(BBB)permeability and lack of cancer-targeting ***,brain endothelial cell-derived extracellular vesicles(bEVs)were used as a biocompatible nanoplatform to transport photosensitizers into brain tumors across the *** enhance PDT efficacy,the photosensitizer chlorin e6(Ce6)was linked to mitochondria-targeting triphenylphosphonium(TPP)and entrapped into *** Ce6(TPP-Ce6)selectively accumulated in the mitochondria,which rendered brain tumor cells more susceptible to reactive oxygen species-induced apoptosis under light ***,the encapsulation of TPP-Ce6 into b EVs markedly improved the aqueous stability and cellular internalization of TPP-Ce6,leading to significantly enhanced PDT efficacy in U87MG GBM *** in vivo biodistribution study using orthotopic GBM-xenografted mice showed that b EVs containing TPP-Ce6[b EV(TPP-Ce6)]substantially accumulated in brain tumors after BBB penetration via transferrin receptor-mediated *** such,b EV(TPP-Ce6)-mediated PDT considerably inhibited the growth of GBM without causing adverse systemic toxicity,suggesting that mitochondria are an effective target for photodynamic GBM therapy.

关键词： Extracellular vesicle Chlorin e6 Triphenylphosphonium Mitochondria-targeting photosensitizer Photodynamic therapy Blood-brain barrier Glioblastoma Transferrin receptor

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Flood complexity and rising exposure risk in High Mountain Asia under climate change

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Science Bulletin 2025年第10期70卷 1601-1604页

作者： Bai, Yuanyuan Li, Dongfeng Wangchuk, Sonam Kettner, Albert Zhao, Yi Deng, Rui Liu, Yong Xiao, Cunde Ni, Jinren Cui, Peng Key Laboratory for Water and Sediment Sciences Ministry of Education College of Environmental Sciences and Engineering Peking University Beijing100871 China State Environmental Protection Key Laboratory of All Materials Flux in River Ecosystems Peking University Beijing100871 China Institute of Carbon Neutrality Peking University Beijing100871 China Institute of Tibetan Plateau Peking University Beijing100871 China International Centre for Integrated Mountain Development Kathmandu44600 Nepal CSDMS Institute of Arctic and Alpine Research University of Colorado Boulder BoulderCO80309-0545 United States State Key Laboratory of Earth Surface Processes and Resource Ecology Beijing Normal University Beijing100875 China Key Laboratory of Land Surface Pattern and Simulation Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing100101 China Key Laboratory of Mountain Hazards and Earth Surface Process Institute of Mountain Hazards and Environment Chinese Academy of Sciences Chengdu610299 China

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Foam control in biotechnological processes—challenges and opportunities

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Discover Chemical engineering 2024年第1期4卷 1-32页

作者： Tiso, Till Demling, Philipp Karmainski, Tobias Oraby, Amira Eiken, Jens Liu, Luo Bongartz, Patrick Wessling, Matthias Desmond, Peter Schmitz, Simone Weiser, Sophie Emde, Frank Czech, Hannah Merz, Juliane Zibek, Susanne Blank, Lars M. Regestein, Lars Institute of Applied Microbiology–iAMB Aachen Biology and Biotechnology–ABBt RWTH Aachen University Aachen Germany Fraunhofer Institute for Interfacial Engineering and Biotechnology IGB Stuttgart Germany Institute of Interfacial Process Engineering and Plasma Technology IGVP University of Stuttgart Stuttgart Germany Fredensborg Denmark College of Life Sciences and Technology Beijing University of Chemical Technology Beijing China Chemical Process Engineering AVT RWTH Aachen University Aachen Germany DWI Leibniz-Institute for Interactive Materials Aachen Germany Institute of Environmental Engineering RWTH Aachen University Aachen Germany Division of Sustainable Development College of Science and Engineering Hamad Bin Khalifa University (HBKU) Doha Qatar Bio Pilot Plant Leibniz Institute for Natural Product Research and Infection Biology–Hans Knöll Institute (Leibniz-HKI) Jena Germany Heinrich Frings GmbH & Co. KG Rheinbach Germany Evonik Operations GmbH Research Development & Innovation Biotech Hub Hanau Germany

Foam formation is a massive challenge in submerged aerated bioprocesses, e.g., in beer fermentation. While the use of antifoam may easily overcome foaming at laboratory scale, it is often an unattractive solution since the challenge remains in future upscaling, as reduced mass transfer and extra steps in product purification and analytics result in increased costs. Interestingly, the number of studies tackling this challenge is relatively low, although literature suggests a range of alternatives, from avoiding foaming to means of controlling or even using foaming as an in situ product removal. Here we give an overview of the topic in five subsections. (1) We argue that a sound understanding of the molecular origin of foaming can facilitate solutions for overcoming the challenge while introducing some long-known challenges (i.e., in beer fermentation). We then review in (2) the apparent avoidance of foam formation before we in (3) summarize possibilities to reduce and control foam after its formation. Subsequently, in (4), we discuss possible solutions that take advantage of foam formation, for example, via foam fractionation for in situ product removal. Finally, in (5), we provide an overview of microbial strain engineering approaches to cope with some aspects of foaming in fermentations. With this review, we would like to sensitize and inform the interested reader while offering an overview of the current literature for the expert, particularly with regard to the foam special issue in Discover Chemical engineering.

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A Method for Automatic Identification of Natural Fracture Based on Machine Learning: A Case Study on the Dahebian Block of the Liupanshui Basin in Guizhou Province 13th

A Method for Automatic Identification of Natural Fracture Ba...

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13th International Field Exploration and development Conference, IFEDC 2023

作者： Zhao, Wei-Guang Sang, Shu-Xun Cheng, De-Qiang Han, Si-Jie Zhou, Xiao-Zhi Zhang, Jin-Chao Zhao, Fu-Ping School of Resources and Geosciences China University of Mining and Technology Xuzhou221116 China Jiangsu Key Laboratory of Coal-Based Greenhouse Gas Controland Utilization China University of Mining and Technology Xuzhou221008 China Carbon Neutrality Institute China University of Mining and Technology Xuzhou221008 China Artificial Intelligence Research Institute China University of Mining and Technology Xuzhou221116 China School of Information and Control Engineering China University of Mining and Technology Xuzhou221116 China Key Laboratory of Coalbed Methane Resources and Reservoir Formation Process Ministry of Education China University of Mining and Technology Xuzhou221116 China Key Laboratory of Unconventional Natural Gas Evaluation and Development in Complex Tectonic Areas Ministry of Natural Resources Guiyang550009 China Guizhou Engineering Research Institute of Oil & Gas Exploration and Development Guiyang550009 China

ISBN: (纸本)9789819702718

Natural fractures are effective storage spaces and important seepage channels for oil and gas reservoirs. Accurately identifying natural fractures in reservoirs is crucial for the exploration and development of oil and gas resources. This article combines conventional and imaging logging data and uses machine learning to automatically identify natural fractures in reservoirs. The fracture labels of conventional logging come from imaging logging. Conventional logging data is decomposed through multi-scale wavelet to extract components that reflect fracture information, and further build the original data set. The AdaBoost model is trained based on a modified dataset of balanced samples for automatic fractures recognition in logging. The research results indicate that the approximate component and high-frequency component reflect the fluctuation of the formation and noise information respectively, and have little impact on the reservoir fractures identification;The medium frequency component can reflect the characteristic information of fractures and can be used for model training;After hyper-parameter optimization, the AdaBoost model has high accuracy and generalization ability, and can still accurately identify the types and distribution of natural fractures from the actual unbalanced logging data. This research has important guiding significance for the accurate characterization and construction of reservoir. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Wavelet transforms

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Strategic design and fabrication of MXenes-Ti_(3)CNCl_(2)@CoS_(2) core-shell nanostructure for high-efficiency hydrogen evolution

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Nano research 2022年第7期15卷 5977-5986页

作者： Jizhou Jiang Saishuai Bai Meiqing Yang Jing Zou Neng Li Jiahe Peng Haitao Wang Kun Xiang Song Liu Tianyou Zhai School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationWuhan Institute of TechnologyWuhan 430205China College of Life and Environmental Science Hunan University of Arts and ScienceChangde 415000China Key Laboratory of Rare Mineral Ministry of Natural ResourcesGeological Experimental Testing Center of Hubei ProvinceWuhan 430034China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China Institute of Chemical Biology and Nanomedicine(ICBN) State Key Laboratory of Chemo/Biosensing and ChemometricsCollege of Chemistry and Chemical EngineeringHunan UniversityChangsha 410082China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

CoS_(2) is considered to be a promising electrocatalyst for hydrogen evolution reaction(HER).However,its further widespread applications are hampered by the unsatisfactory activity due to relatively high chemisorption energy for hydrogen ***,theoretical predictions of first-principles calculations reveal that the introduction of a Cl-terminated MXenes-Ti_(3)CNCl_(2) can significantly reduce the HER potential of CoS_(2)-based materials and the Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure has Gibbs free energy of hydrogen adsorption(|ΔGH|)close to zero,much lower than that of the pristine CoS_(2) and Ti_(3)CNCl_(2).Inspired by the theoretical predictions,we have successfully fabricated a unique Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure by ingeniously coupling CoS_(2) with a Cl-terminated MXenes-Ti_(3)CNCl_(2).Interface-charge transfer between CoS_(2) and Ti_(3)CNCl_(2) results in a higher degree of electronic localization and a formation of chemical ***,the Ti_(3)CNCl_(2)@CoS_(2) core–shell nanostructure achieves a significant enhancement in HER activity compared to pristine CoS_(2) and Ti_(3)CNCl_(2).Theoretical calculations further confirm that the partial density of states of CoS_(2) after hybridization becomes more non-localized,and easier to interact with hydrogen ions,thus boosting HER *** this work,the success of oriented experimental fabrication of high-efficiency Ti_(3)CNCl_(2)@CoS_(2) electrocatalysts guided by theoretical predictions provides a powerful lead for the further strategic design and fabrication of efficient HER electrocatalysts.

关键词： theoretical predictions Ti_(3)CNCl_(2)@CoS_(2)core-shell nanostructure electronic non-localization hydrogen evolution

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Traceability Evaluation in Requirements engineering According to Automotive SPICE

Traceability Evaluation in Requirements Engineering Accordin...

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IEEE International Conference on Requirements engineering

作者： Vishakha Rathod Thomas Cebulla Stefan Kugele Faculty of Industrial Engineering Technische Hochschule Ingolstadt Ingolstadt Germany Process Management Development Driving/Energy AUDI AG Ingolstadt Germany Research Institute AImotion Bavaria Technische Hochschule Ingolstadt Ingolstadt Germany

Context: Traceability evaluation is essential for automotive system success, which involves assessing an organisation's ability to track and trace the requirements from the initial conception of the requirement to the delivery of the final product or system. Objectives: This paper presents the development of a graphical user interface which supports the traceability evaluation in PTC Integrity, by displaying the dependency tree, to facilitate consistency and impact analysis in Automotive SPICE standards. Methods: Qualitative and quantitative experimental design and agile development methods were used to identify problems and potential solutions, and user requirements were gathered and analysed thematically. Results: Conceptual ideas for the visualisation and configuration were offered, and keeping the limitations in mind, the dependency tree tool was developed. The scope for future development was also provided. Conclusions: The developed tool is beneficial in automotive development by saving time in impact analysis and improving consistency.

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