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Engineering 2023年第7期26卷 220-228,I0009页

作者：朱斌赫羴珊吴亚东李松伟邵路 MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage State Key Laboratory of Urban Water Resource and EnvironmentSchool of Chemistry and ChemicalHarbin Institute of TechnologyHarbin 150001China Key Laboratory of Materials Processing and Mold(Zhengzhou University) Ministry of EducationNational Engineering Research Center for Advanced Polymer Processing Technology Department of Chemical EngineeringZhengzhou UniversityZhengzhou 450002China

针对日益增加的大气CO_(2)含量,膜技术被认为是一种有前景的碳捕集策略,其中亲CO_(2)分离膜已经展示出显著的应用潜力,特别是在CO_(2)/轻质气体分离方面。以聚环氧乙烷(PEO)为代表的CO_(2)亲和材料,因其与CO_(2)的特殊偶极-四极矩相互... 详细信息

针对日益增加的大气CO_(2)含量,膜技术被认为是一种有前景的碳捕集策略,其中亲CO_(2)分离膜已经展示出显著的应用潜力,特别是在CO_(2)/轻质气体分离方面。以聚环氧乙烷(PEO)为代表的CO_(2)亲和材料,因其与CO_(2)的特殊偶极-四极矩相互作用而吸引了广泛的研究关注。在此,我们报道了一种简便的一步合成方案,通过原位聚合高度柔性的小分子PEO来克服其高结晶度和低机械强度的局限性。得益于短链PEO与聚合物基体之间的复杂链缠绕,使线性PEO的负载高达90%(质量分数)。因此,分离性能轻松超过了著名的分离上限。此外,高结构稳定性使得分离膜在高进料压力(高达20 bar)下表现出更好的CO_(2)渗透系数和气体选择性。本研究同时改善了全聚合物膜的机械性能和气体分离性能,在工业碳捕集和气体净化领域展现出显著潜力。

关键词： Membrane separation Gas separation CO_(2)capture CO_(2)-philic membrane Poly(ethylene oxide)

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Au23（CR）14 nanocluster restores fibril Aβ's unfolded state with abolished cytotoxicity and dissolves endogenous Aβplaques

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National Science Review 2020年第4期7卷 763-774页

作者： Wenkang Zhang Guanbin Gao Zhongjie Ma Zhuoying Luo Meng He Taolei Sun State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology School of Chemistry Chemical Engineering and Life Science Wuhan University of Technology

The misfolding of amyloid-β（Aβ） peptides from the natural unfolded state to β-sheet structure is a critical step, leading to abnormal fibrillation and formation of endogenous Aβ plaques in Alzheimer's disease（AD）. Previous studies have reported inhibition of Aβ fibrillation or disassembly of exogenous Aβ fibrils in vitro. However, soluble Aβ oligomers have been reported with increased cytotoxicity; this might partly explain why current clinical trials targeting disassembly of Aβ fibrils by anti-Aβ antibodies have failed so *** we show that Au23（CR）14(a new Au nanocluster modified by Cys-Arg（CR） dipeptide) is able to completely dissolve exogenous mature Aβ fibrils into monomers and restore the natural unfolded state of Aβ peptides from misfolded β-sheets. Furthermore, the cytotoxicity of Aβ40fibrils when dissolved by Au23（CR）14is fully abolished. More importantly, Au23（CR）14is able to completely dissolve endogenous Aβ plaques in brain slices from transgenic AD model mice. In addition, Au23（CR）14has good biocompatibility and infiltration ability across the blood–brain barrier. Taken together, this work presents a promising therapeutics candidate for AD treatment, and manifests the potential of nanotechnological approaches in the development of nanomedicines.

关键词： gold nanoclusters Alzheimer’s disease restores fibril Aβ’s unfolded state abolished cytotoxicity dissolves endogenous Aβ plaques

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Hot Deformation Behavior and Microstructure Evolution of Electrolytic Copper

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稀有金属材料与工程 2025年第4期54卷 920-929页

作者： Zhang Han Sang Chen Zhang Yan Xu Yangtao Qiao Jisen Xia Tiandong School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou 730050China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou 730050China Jinchuan Group Copper Co. LtdJinchang 737100China

The hot deformation behavior of electrolytic copper was investigated using a Gleeble-3500 thermal simulation testing machine at temperatures ranging from 500℃ to 800℃ and strain rates ranging from 0.01 s^(-1) to 10 s^(-1),under 70% deformation *** true stress-true strain curves were analyzed and a constitutive equation was established at a strain of *** on the dynamic material model proposed by Prasad,processing maps were developed under different strain *** of compressed sample was observed by electron backscatter *** results reveal that the electrolytic copper demonstrates high sensitivity to deformation temperature and strain rate during high-temperature plastic *** flow stress decreases gradually with raising the temperature and reducing the strain *** to the established processing map,the optimal processing conditions are determined as follows:deformation temperatures of 600-650℃ and strain rates of 5-10 s^(-1).Discontinuous dynamic recrystallization of electrolytic copper occurs during high-temperature plastic deformation,and the grains are significantly refined at low temperature and high strain rate conditions.

关键词： electrolytic copper hot deformation constitutive equation dynamic recrystallization

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Ammonium Ion and Structural Water Co-Assisted Zn^(2+) Intercalation/De-Intercalation in NH_(4)V_(4)O_(10)∙0.28H_(2)O

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Chinese Journal of Chemistry 2021年第7期39卷 1885-1890页

作者： Ting Zhu Bo Mai Ping Hu Ziang Liu Congcong Cai Xuanpeng Wang Liang Zhou State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhanHubei430070 China Department of Physical Science&Technology School of ScienceWuhan University of TechnologyWuhanHubei430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshanGuangdong528200 China

Main observation and conclusion The cathode material plays a crucial role in the performances of aqueous zinc-ion batteries(ZIBs).Herein,we report an ammonium vanadate(NH_(4)V_(4)O_(10)∙0.28H_(2)O,NHVO)aqueous ZIB cat... 详细信息

关键词： Aqueous zinc-ion battery Cathode material Vanadates Zincates Electrochemistry

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Efficient Construction of Chiral Binaphthalene-Core Phosphepine Compounds Using Palladium-Catalyzed C—P Coupling Reactions

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有机化学 2024年第12期44卷 3771-3783页

作者： Wang Cuiying Zhang Ying Zheng Jia-Lian Yuan Ji Meng Sixuan Chen Jian Yu Guang-Ao State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200 International Joint Research Center for Intelligent Biosensor Technology and Health National Key Laboratory of Green PesticidesCollege of ChemistryCentral China Normal UniversityWuhan 430079

Binaphthalene-core phosphepine compounds with axial chirality belong to an important class of organocatalysts and ligands used in catalytic asymmetric ***,the number and application of these compounds have been limited due to the lack of efficient synthetic methods currently available to ***,a simple and efficient palladium-catalyzed C—P cross-coupling reaction of enantiopure(R)-1 with a variety of aryl and heteroaryl halides is *** reaction provides access to a series of chiral binaphthalene-core phosphepine compounds using Pd(OAc)2/dippf as a catalyst,which allows most products to be formed in moderate to high yields(40%~92%)with excellent ee values(90%~99%ee).

关键词： Pd catalysis chiral axially binaphthalene C-P coupling reactions

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Maximum Power Point Tracking Using a Multimode Hunter-Prey Optimization Algorithm for Gradually Varying Power in Centralized Thermoelectric Generation System

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Energy technology 2025年第0期

作者： Zhu, Wenchao Li, Peng Yang, Wenlong Xie, Changjun Li, Hao Yang, Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan430070 China School of Automation Wuhan University of Technology Wuhan430070 China Wuhan Industrial Technology Institute of Artificial Intelligence and New Energy Vehicles Wuhan430119 China Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of Technology Wuhan430070 China

The unstructured power outputs from thermoelectric generator (TEG) systems have precipitated the advancement of maximum power point tracking (MPPT) methods toward more intelligent solutions. This article concentrates on centralized TEG systems which work during nonuniform distribution of temperature cases and introduce the hunter-prey optimization algorithm with multimode updating (MMUHPO). Existing MPPT methods based on metaheuristic algorithms pay attention to improving tracking speed, efficiency, oscillation, and call frequency. However, in scenarios marked by gradual changes in power characteristics, the precision of MPPT algorithms can lead to frequent oscillatory searches and elevated computational demands. MMUHPO reduces power loss and simplifies algorithm complexity by improving the original mechanism and introducing termination mechanism and multimode update mechanism. Herein, the proposed algorithm is compared with several widely used MPPT algorithms based on metaheuristic algorithms under five different operating conditions. Remarkably, the MMUHPO algorithm demonstrates a substantial enhancement in energy collection efficiency, with the increase in efficiency reaching up to 109.8%. Finally, real-time data simulation experiments corroborate the exceptional tracking performance of the proposed algorithm. © 2025 Wiley-VCH GmbH.

关键词： Heuristic algorithms

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Unveiling a giant electrocaloric effect at low electric fields through continuous phase transition design

Advanced Powder Materials

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advanced Powder materials 2024年第5期3卷 33-45页

作者： Yunyao Huang Leiyang Zhang Pingji Ge Ruiyi Jing Wenjing Shi Chao Li Xiang Niu Vladimir Shur Haibo Zhang Shengguo Lu Yintang Yang Dawei Wang Xiaoqin Ke Li Jin Electronic Materials Research Laboratory Key Laboratory of the Ministry of EducationSchool of Electronic Science and EngineeringFaculty of Electronic and Information EngineeringXi’an Jiaotong UniversityXi’an710049China School of Physics MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed MatterXi’an Jiaotong UniversityXi’an710049China Instrument Analysis Center Xi’an Jiaotong UniversityXi’an10049China Guangdong Provincial Research Center on Smart Materials and Energy Conversion Devices School of Materials and EnergyGuangdong University of TechnologyGuangzhou510006China School of Natural Sciences and Mathematics Ural Federal UniversityEkaterinburg20000Russia School of Materials Science and Engineering State Key Laboratory of Material Processing and Die&Mould TechnologyHuazhong University of Science and TechnologyWuhan430074China School of Microelectronics Xidian UniversityXi’an710071China Functional Materials and Acousto-Optic Instruments Institute School of Instrumentation Science and EngineeringHarbin Institute of TechnologyHarbin150080China

The reported electrocaloric(EC)effect in ferroelectrics is poised for application in the next generation of solidstate refrigeration technology,exhibiting substantial developmental *** study introduces a novel and efficient EC effect strategy in(1-x)Pb(Lu_(1/2)Nb_(1/2))O_(3)-xPbTiO_(3)(PLN-xPT)ceramics for low electric-fielddriven ***-field simulations provide fundamental insights into thermally induced continuous phase transitions,guiding subsequent experimental investigations.A comprehensive composition/temperature-driven phase evolution diagram is constructed,elucidating the sequential transformation from ferroelectric(FE)to antiferroelectric(AFE)and finally to paraelectric(PE)phases for x=0.10-0.18 *** measurements of EC performance highlight x=0.16 as an outstanding performer,exhibiting remarkable properties,including an adiabatic temperature change(ΔT)of 3.03 K,EC strength(ΔT/ΔE)of 0.08 K cm kV-1,and a temperature span(Tspan)of 31℃.The superior EC effect performance is attributed to the temperature-induced FE to AFE transition at low electric fields and diffusion phase transition behavior contributing to the wide *** work provides valuable insights into developing high-performance EC effect across broad temperature ranges through the strategic design of continuous phase transitions,offering a simplified and economical approach for advancing ecofriendly and efficient solid-state cooling technologies.

关键词： PbPb(Lu_(1/2)Nb_(1/2))O_(3)-xPbTiO_(3)(PLN-PT) Electrocaloric effect(ECE) Phase transition Low electric field Antiferroelectric

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Potential application of graphene nanoplatelets as a high temperature lubricant for hot rolling

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Friction 2022年第11期10卷 1810-1823页

作者： Long WANG Anh Kiet TIEU Ming MA Jiaqing LI Guojuan HAI Hongtao ZHU State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsNorthwestern Polytechnical UniversityXi’an 710021China School of Mechanical MaterialsMechatronic and Biomedical EngineeringFaculty of Engineering and Information SciencesUniversity of WollongongNorthfields AvenueWollongongNSW 2522Australia State Key Laboratory of Tribology Department of Mechanical EngineeringTsinghua UniversityBeijing 100084China School of Materials Science and Engineering Shaanxi University of Science and TechnologyXi’an 710021China

Graphene has been shown to be a promising solid lubricant to reduce friction and wear of the sliding counterparts,and currently is reported to only function below 600℃.In this study,its potential as a lubricant above 600℃ was studied using a ball-on-disc tribo-meter and a rolling *** results suggest that a reduction up to 50%can be obtained with graphene nanoplatelets(GnP)under lubricated conditions between 600 and 700℃ when compared with dry *** this friction reduction can last more than 3 *** 800 and 900℃,the friction reduction is stable for 70 and 40 s,respectively,which indicates that GnP can potentially provide an effective lubrication for hot metal forming *** rolling experiments on steel strips indicate that GnP reduces the rolling force by 11%,7.4%,and 6.9%at 795,890,and 960℃,*** friction reductions are attributed to the easily sheared GnP between the rubbing interfaces.A temperature higher than 600℃ will lead to the gasification of the residual graphene on the strip surface,which is believed to reduce the black contamination from traditional graphite lubricant.

关键词： graphene high temperature lubricant hot rolling tribology properties

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Modulation of microstructure and properties of Cu−Ni−Sn alloy by addition of trace Ti

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Transactions of Nonferrous Metals Society of China 2024年第12期34卷 3978-3991页

作者： Ying-lin HU Zi-luo CHENG Xiao-na LI Zhu-min LI Yuan-di HOU Min LI Mian YANG Yue-hong ZHENG Chuang DONG School of Materials Science and Engineering Dalian University of TechnologyDalian 116024China Key Laboratory of Materials Modification by Laser Ion and Electron BeamsMinistry of EducationDalian University of TechnologyDalian 116024China School of Materials Science and Engineering Anhui Polytechnic UniversityWuhu 241000China State Key Laboratory of Advanced Processing and Recycling of Nonferrous Metals Lanzhou University of TechnologyLanzhou 730050China

The segregation of Sn and discontinuous precipitation at grain boundaries are detrimental to the strength,ductility,and machinability of the Cu−Ni−Sn alloy.A strategy to solve the above problems is multi-component composition design by introducing strong enthalpic interaction *** this work,a series of Cu_(80)Ni_(15)Sn_(5−x)Ti_(x)(at.%)alloys were designed by cluster-plus-glue-atom model,and the effects of Ti content on the microstructure and properties of the alloys were systematically investigated using TEM and other analysis *** results demonstrate that Ti can effectively inhibit the segregation and discontinuous precipitation while promoting continuous precipitation to improve the high-temperature stability of the *** the Ti content increases,the distribution of Ti changes from uniform distribution to predominant *** hardness and conductivity of the alloy exceed those of the C72900(Cu−15Ni−8Sn(wt.%))commercial alloy and the Cu_(80)Ni_(15)Sn_(5)(at.%)reference alloy when Ti is in the solution state.

关键词： Cu−Ni−Sn alloy microstructure properties cluster-plus-glue-atom model segregation discontinuous precipitation enthalpic interaction

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Halogenated Thienoacene Derivatives with Improved Emission Properties

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Chemical Research in Chinese Universities 2024年第4期40卷 699-703页

作者： ZHANG Jingmei MENG Zhihao ZHEN Yonggang HE Ping YU Panpan HU Wenping Advanced Innovation Center for Soft Matter Science and Engineering State Key Laboratory of Organic-Inorganic CompositesBeijing University of Chemical TechnologyBeijing100029P.R.China Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhan430074P.R.China State Key Laboratory of Fine Chemicals Dalian University of TechnologyDalian116024P.R.China Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province China West Normal UniversityNanchong637000P.R.China Key Laboratory of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education Jiangxi Normal UniversityNanchang330022P.R.China MOE Key Laboratory of Organic Integrated Circuits&Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of ChemistrySchool of SciencesTianjin UniversityTianjin300072P.R.China

Thienoacenes is one of most important groups of semiconducting materials due to the high stability and superior ***,there are scarce studies on the emission properties of thienoacenes to ***,we synthesized fluorinated and chlorinated dibenzo[d,d’]thieno[3,2-b;4,5-b’]dithiophenes(DBTDTs)derivatives F6-DBTDT and Cl6-DBTDT by sulfoxide cyclization,significantly lowering the energy levels relative to the parent compound *** to single crystal structure analysis,F6-DBTDT molecules adopt one-dimensional slipped stacking with closeπ-πinteractions of 3.43Å(1Å=0.1 nm),which is different from the parent compound DBTDT with herringbone stacking ***,the halogenated DBTDT derivatives exhibit enhanced emission properties both in solution and in the solid state,opening up possiblities to improve photoluminescence of thienoacences by halogenation.

关键词： Thienoacene Halogenation Photoluminescence Aggregation structure

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