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Chinese Journal of Chemistry 2015年第1期33卷 119-124页

作者： Yi Cui Ding Zhou zhuyin sui Baohang Han National Center for Nanoscience and Technology Beijing 100190China University of Chinese Academy of Sciences Beijing 100049China

Graphene oxide(GO)-wrapped gold nanoparticles(Au NPs)hybrid materials are constructed via one-pot sono-chemical synthesis and self-assembly,using ethylene glycol as the reducing *** synthesis process above took only 1 h,and the obtained hybrid materials exist as spheres wrapped with gauze-like GO sheets via ionic in-teraction-based *** GO sheets are helpful for the well dispersion of the Au ***,these materials possess enhanced photocatalytic activity under visible light irradiation,owing to the synergistic effect of the two components in the hybrid *** work may provide a convenient approach to control the size and morphology of the Au NPs for the synthesis of GO-wrapped hybrid materials,which opens up a feasible way to synthesize metal NPs/GO ***,this method might lead to developing of a broad class of new functionalized materials wrapped with GO sheets.

关键词： graphene oxide gold nanoparticle sonochemical synthesis metal hybrid material photocatalysis

Self-supporting hierarchically micro/nano-porous Ni_(3)P-Co_(2)P-based film with high hydrophilicity for efficient hydrogen production

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Journal of Materials Science & Technology 2021年第6期65卷 118-125页

作者： Xiangtao Yu Xiangyu Ren Yanwei Zhang Zhangfu Yuan zhuyin sui Mingyong Wang Collaborative Innovation Center of Steel Technology University of Science and Technology BeijingBeijing 100083China School of Chemistry&Chemical Engineering Yantai UniversityYantai 264005China State Key Laboratory of Advanced Metallurgy University of Science and Technology BeijingBeijing 100083China

Designing efficient and stable non-precious metal HER(hydrogen evolution reaction)electrocatalysts with high large current density adaptability is significant for industrial application of hydrogen production by water ***,a facile strategy was developed to construct a multi-phase Ni3 P-Co_(2)P-(Ni-Co)film with self-supporting hierarchically micro/nano-porous structure by using bubble template method electrodeposition of self-supporting micro-porous Ni Co P film,oxygen-free annealing for phase separation producing Ni_(3)P-Ni-Co_(2)P-Co structure,and acid etching for constructing surface nano-porous *** effective active sites for HER was significantly increased due to the hierarchically micro/nano-porous structure,which not only enlarged the surface roughness,but enhanced the bubble detachment by improving the ***,the HER electrolysis durability was improved benefiting from the Ni_(3)P-Co_(2)P phases with high corrosion resistance(especially in acid solution)and the self-supporting film structure without ***,the Ni Co P-OA-AE film exhibited high HER catalytic performance,which delivered a current density of 10 m A cm^(-2)at a low overpotential of 42.9 and 39.7 m V in 1 M KOH and 0.5 M H_(2)SO_(4),*** also possessed high long-term electrolysis durability,and the cell voltage of water electrolysis using self-supporting porous Ni Co P-OA-AE||Ir O_(2)-Ta_(2)O_(5) electrolyzer at 500 m A cm^(-2)for 250 h in 0.5 M H_(2)SO_(4 )is only 2.9 V.

关键词： Self-supporting Micro/nano-porous film High hydrophilicity Bubble detachment High HER(hydrogen evolution reaction) catalytic performance

Ultralight aerogel sphere composed of nanocellulose-derived carbon nanofiber and graphene for excellent electromagnetic wave absorption

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Nano Research 2023年第5期16卷 7931-7940页

作者： Runa Zhang Bin Li Yunfei Yang Na Wu zhuyin sui Qingfu Ban Lili Wu Wei Liu Jiurong Liu Zhihui Zeng Key Laboratory for Liquid–Solid Structural Evolution and Processing of Materials Ministry of EducationSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Department of Chemistry and Applied Biosciences ETH ZurichZurich CH-8093Switzerland School of Chemistry and Chemical Engineering Yantai UniversityYantai 264005China State Key Laboratory of Crystal Materials Institute of Crystal MaterialsShandong UniversityJinan 250100China Shenzhen Research Institute of Shandong University Shenzhen 518063China Suzhou Research Institute of Shandong University Suzhou 215123China

A novel type of three-dimensional ultralight aerogel sphere,consisting of one-dimensional nanocellulose-derived carbon fibers and two-dimensional graphene layers,was prepared based on a developed drop-freeze-drying followed by carbonization *** nanofibrous carbon efficiently prevents the agglomeration of the graphene layers,which,in turn,reduces the shrinkage and maintains the structural stability of the hybrid carbon aerogel ***,the aerogel spheres showing an ultralow-density of 2.8 mg/cm^(3) and a porosity of 99.98%accomplish the tunable dielectric property and electromagnetic wave(EMW)absorption *** high-efficiency utilization of biomass-derived fibrous nanocarbon,graphene,the porous structure of the hybrid aerogel spheres leads to the excellent EMW absorption *** aerogel spheres display an effective absorption bandwidth of 6.16 GHz and a minimum reflection loss of−70.44 dB even at a filler loading of merely 3 wt.%,significantly outperforming that of other biomass-derived carbon-based EMW absorbing *** work offers a feasible,facile,scalable approach for fabricating high-performance and sustainable biomass-based aerogels,suggesting a tremendous application potential in EMW absorption and aerospace.

关键词： nanocellulose aerogel graphene electromagnetic wave absorption composite

Ratiometric recognition of humidity by a europium-organic framework equipped with quasi-open metal site

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Science China Chemistry 2021年第10期64卷 1723-1729页

作者： Wei Zhang Jian Xie zhuyin sui Zhijun Xu Xiaoze Wang Min Lei Hongfa Zhang Zhongyue Li Yanlong Wang Wei Liu Wei Du Shuao Wang School of Environmental and Material Engineering Yantai UniversityYantai 264005China State Key Laboratory of Radiation Medicine and Protection School for Radiological and Interdisciplinary Sciences(RAD-X)Collaborative Innovation Center of Radiation Medicine of Jiangsu Higher Education InstitutionsSoochow UniversitySuzhou 215123China

Open metal site(OMS)seated in a luminescent lanthanide(Ln)metal center offers an opportunity for rationally tuning the spectroscopic behavior of lanthanide-organic frameworks aiming for a wide range of sensing ***,given the spherical nature of common coordination geometries of trivalent lanthanides and the generally strong Ln–O bonds,the lanthanide based OMS is rarely reported and difficult to be *** report here a unique europium-organic framework containing abundant quasi-OMS that is protected by an abnormal weak Eu–O *** quasi-OMSs offer reversible direct binding sites for water molecules probed by X-ray crystallography,leading to sensitive,visible,and ratiometric luminescent sensing toward humidity and water content in organic *** specific recognition of water based on quasi-luminescentOMSs gives rise to a superior water detection limit down to 0.0003%v/v,which is one order of magnitude lower than that of Karl Fischer method.

关键词： metal-organic framework luminescence detection

Rock fracture mechanism of buffer blasting with cushion layer at the borehole bottom

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 325-334页

作者： Xinguang Zhu Chenxi Ding Zhe sui Hong Su Xu Guo School of Civil and Resources Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory for Mechanics in Fluid Solid Coupling Systems Institute of MechanicsChinese Academy of SciencesBeijing 100190China School of Mechanics and Civil Engineering China University of Mining and Technology(Beijing)Beijing 100083China School of Chemical and Blasting Engineering Anhui University of Science and TechnologyHuainan 232001China

This study primarily investigates the rock fracture mechanism of bottom cushion layer blasting and explores the effects of the bottom cushion layer on rock *** involves analyses of the evolution patterns of blasting stress,characteristics of crack distribution,and rock fracture features in the ***,blasting model experiments were carried out using the dynamic caustics principle to investigate the influence of bottom cushion layers and initiation methods on the integrity of the bottom rock *** experimental results indicate that the combined use of bottom cushion layers and inverse initiation effectively protects the integrity of the bottom rock ***,the process of stress wave propagation and dynamic crack propagation in rocks was simulated using the continuum-discontinuum element method(CDEM)and the Landau explosion source model,with varying thicknesses of bottom cushion *** numerical simulation results indicate that with increasing cushion thickness,the absorption of energy generated by the explosion becomes more pronounced,resulting in fewer cracks in the bottom rock *** illustrates the positive role of the cushion layer in protecting the integrity of the bottom rock mass.

关键词： bottom cushion layer blasting crack propagation continuum-discontinuum element method dynamic stress intensity factor

Robust interface and excellent as-built mechanical properties of Ti–6Al–4V fabricated through laser-aided additive manufacturing with powder and wire

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 154-168页

作者： Fei Weng Guijun Bi Youxiang Chew Shang sui Chaolin Tan Zhenglin Du Jinlong Su Fern Lan Ng Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of EducationShandong Engineering&Technology Research Center for Superhard MaterialSchool of Materials Science and EngineeringShandong UniversityJinan 250061China Institute of Intelligent Manufacturing Guangdong Academy of SciencesGuangzhou 510095China Singapore Institute of Manufacturing Technology 5 Cleantech Loop636732Singapore

The feasibility of manufacturing Ti-6Al-4V samples through a combination of laser-aided additive manufacturing with powder(LAAM_(p))and wire(LAAM_(w))was explored.A process study was first conducted to successfully circumvent defects in Ti-6Al-4V deposits for LAAM_(p) and LAAM_(w),*** the optimized process parameters,robust interfaces were achieved between powder/wire deposits and the forged substrate,as well as between powder and wire *** characterization results revealed the epitaxial prior β grains in the deposited Ti-6Al-4V,wherein the powder deposit was dominated by a finerα′microstructure and the wire deposit was characterized by lamellar α *** mechanisms of microstructure formation and correlation with mechanical behavior were analyzed and *** mechanical properties of the interfacial samples can meet the requirements of the relevant Aerospace Material Specifications(AMS 6932)even without post heat *** fracture occurred within the interfacial area,further suggesting the robust *** findings of this study highlighted the feasibility of combining LAAM_(p) and LAAM_(w) in the direct manufacturing of Ti-6Al-4V parts in accordance with the required dimensional resolution and deposition rate,together with sound strength and ductility balance in the as-built condition.

关键词： laser-aided additive manufacturing powder deposition wire deposition interfacial characteristic mechanical behavior

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锂离子电池在极端条件下衰减机制分析

时代汽车 2023年第2期 100-102页

作者：周建平赖永春王宏建刘金满隋竹银烟台大学化学化工学院山东省烟台市264005 漳州科华技术有限责任公司福建省漳州市363000

全球能源需求的持续增长使电化学能量转换和储存的重要性达到了前所未有的水平。在各种类型的电池中,锂离子电池因其高能量密度、高功率密度、长寿命、环保和技术成熟而成为首选。车辆可能在寒冷的冬季或炎热的夏季停放,也可能在寒冷的... 详细信息

全球能源需求的持续增长使电化学能量转换和储存的重要性达到了前所未有的水平。在各种类型的电池中,锂离子电池因其高能量密度、高功率密度、长寿命、环保和技术成熟而成为首选。车辆可能在寒冷的冬季或炎热的夏季停放,也可能在寒冷的地区或炎热的沙漠中行驶。军事、航天,深潜等特殊场景的应用也需要锂离子电池在较宽的温度范围内运行良好。在本篇文章中,将从材料的角度分析锂离子电池在极端温度条件下电化学性能衰减的内在原因。

关键词：锂离子电池极端条件衰减机制

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Journal of Thermal Science 2009年第1期18卷 2-7页

作者： sui Lin Department of Mechanical and Industrial Engineering Concordia University Montreal Quebec Canada H3G 1M8

The particle paths of the Lagrangian flow field between two cylinders simulate well the spiral arms of Galaxy M51 image [1] and the interface curve of the Yin-Yang balance in the ancient Tai-Cbi diagram [2]. The particle paths of the Lagrangian flow field involve four parameters. The normalization of the system of equations significantly simplifies the formulation of the flow process and reduces the original four parameters to only one parameter. Furthermore it provides the similarity between the formulation of the spiral arms of Galaxy M51 and that of the interface curve of the Yin-Yang balance in the ancient Tai-Chi diagram.

关键词： Lagrangian flow field Particle path Simulation Galaxy M51 Ancient Tai-Chi diagram

Flow structure and shear stress in the presence of both ice cover on water surface and leafless vegetation in channel bed

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Journal of Hydrodynamics 2024年第2期36卷 340-354页

作者： Mahboubeh Barahimi Jueyi sui School of Engineering University of Northern British ColumbiaPrince GeorgeCanada

This study aimed to investigate the previously unexplored effects of ice cover and submerged vegetation on flow *** were undertaken under both open channel and ice-covered flow *** bed material consisted of three non-uniform *** findings revealed that when vegetation patches were present on the bed and an ice cover was present,the velocity profiles exhibited a distinctive pattern with two peak *** kinetic energy(TKE)also exhibited two peaks,one above the vegetation bending height and another at the sheath section,with a decreasing trend towards the ice ***,quadrant analysis showed that when the flow surface is covered by an ice cover,the contributions of inward and outward events increased compared with those observed in an open channel *** most cases,these contributions surpassed the sweep and ejection *** findings enhance our understanding of vegetation’s response to diverse surface conditions and have practical implications for river management and environmental engineering.

关键词： Ice cover vegetation flow structure Reynolds shear stress turbulent kinetic energy(TKE) quadrant analysis

Variant quantifiers in L_(3)-valued first-order logic

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Frontiers of Computer Science 2021年第5期15卷 151-159页

作者： Wei LI Yuefei sui State Key Laboratory of Software Development Environment Beihang UniversityBeijing 100083China Key Laboratory of Intelligent Information Processing Institute of Computing TechnologyChinese Academy of SciencesBeijing 100190China School of Computer Science and Technology University of Chinese Academy of SciencesBeijing 100049China

Traditional first-order logic has four definitions for quantifiers,which are defined by universal and existential *** L_(3)-valued(three-valued)first-order logic,there are eight kinds of definitions for quantifiers;and corresponding Gentzen deduction systems will be given and their soundness and completeness theorems will be proved.

关键词： L_(3)-valued(three-valued)first-order logic sequent quantifier soundness theorem completeness theorem