检索结果-内蒙古大学图书馆

Tb(Ⅲ)functionalized MOF based self-calibrating sensor integrated with logic gate operation for efficient epinephrine detection in serum

引用

Journal of Rare Earths 2024年第5期42卷 987-994,I0006页

作者： Dongsheng Zhao Wenqian Li Rongmei Wen Wencui Li Xin Liu Xiutang Zhang Liming Fan Shanxi Key Laboratory of Advanced Carbon Electrode Materials Shanxi Coal Mine Water Treatment Technology Innovation CenterSchool of Chemistry and Chemical EngineeringNorth University of ChinaTaiyuan030051China Key Laboratory of Advanced Energy Materials Chemistry(Ministry of Education) College of ChemistryNankai UniversityTianjin300071China

By anchoring Tb^(3+)ions on its free carboxyl groups of the nanocaged NiMOF,a dual-emission self-calibrating sensor of Tb^(3+)@NiMOF was fabricated through coordination post-synthetic modification(PSM)*** Tb^(3+)ions as the secondary fluorescent signal and sensing active sites,Tb^(3+)@NiMOF presents great potentials in visually and efficiently monitoring EPI in serum,with high sensitivity and selectivity,fast response,excellent recyclable,and the low detection limit(LOD,3.06 ng/mL).Furthermore,a tandem combinational logic gate based intelligent detection system was constructed to improve the practicability and convenience of epinephrine(EPI)detection in serum by comparing the light emitted colour with the series standard colour cards preset in the *** work provides a promising approach of developing metal-organic frameworks(MOFs)based self-calibrating sensors for intelligent detection of bioactive molecules.

关键词： Metal-organic framework Post-synthetic modification Self-calibrating sensor Logic gate operation Epinephrine detection Rare earths

来源：评论

学校读者我要写书评

暂无评论

Defect engineered electrocatalysts for C-N coupling reactions toward urea synthesis

引用

Chinese Chemical Letters 2024年第8期35卷 7-14页

作者： Shengkai Li Yuqin Zou Chen Chen Shuangyin Wang Zhao-Qing Liu Guangzhou Key Laboratory for Clean Energy and Materials/Key Laboratory for Water Quality and Conservation of the Pearl River Delta Ministry of EducationGuangzhou UniversityGuangzhou 510006China State Key Laboratory of Chemo/Bio-Sensing and Chemometrics College of Chemistry and Chemical EngineeringAdvanced Catalytic Engineering Research Center of the Ministry of EducationHunan UniversityChangsha 410082China

Urea is extensively used in agriculture and chemical industry,and it is produced on an industrial scale from CO_(2)and Haber-Bosch NH_(3)under relatively high temperature and high pressure conditions,which demands high energy input and generates masses of carbon *** conversion of CO_(2)and N sources(such as NO_(2)^(−),NO_(3)^(−),and N_(2))through electrocatalytic reactions under ambient conditions is a promising alternative to realize efficient urea *** note,the design of electrocatalyst is one of the key factors that can improve the efficiency and selectivity of C-N coupling *** engineer-ing is an intriguing strategy for regulating the electronic structure and charge density of electrocatalysts,which endows electrocatalysts with excellent physicochemical properties and optimized adsorption en-ergy of the reaction intermediates to reduce the kinetic *** this minireview,recent advances of defect engineered electrocatalysts in urea electrosynthesis from CO_(2)and various N reactants are firstly *** discussions of C-N coupling in these advances are presented,with the aim of directing future investigations on improving the urea ***,the prospects and challenges of de-fect engineered electrocatalysts for urea synthesis are *** overview is expected to provide in-depth understanding of structure-reactivity relationship and shed light on future electrocatalytic C-N coupling reactions.

关键词： Electrocatalysis Defective electrocatalyst Co-reduction C-N coupling Urea synthesis

来源：评论

学校读者我要写书评

暂无评论

Effect of mechanical stresses on degradation behavior of high-purity magnesium in bone environments

引用

Journal of materials science & Technology 2024年第4期171卷 252-261页

作者： Yan Yao Jie Xia Lizhen Wang Yuanming Gao Xili Ding Chao Wang Yubo Fan Key Laboratory of Biomechanics and Mechanobiology(Beihang University) Ministry of EducationBeijing Advanced Innovation Center for Biomedical EngineeringSchool of Biological Science and Medical EngineeringSchool of Engineering MedicineBeihang UniversityBeijing 100083China

High-purity(HP)magnesium(Mg)has emerged as a promising biomaterial for supporting functional bone *** previous study found that mechanical stresses and the surrounding fibrotic tissue(subcuta-neous)both play crucial roles in the degradation of HP ***,due to challenges in the degradation and regeneration process in vivo,it remains unclear how stress affects HP Mg degradation in bone en-vironments,limiting its further *** this study,novel loading devices were designed and the effects of tensile and compressive stresses on HP Mg degradation in vivo and in vitro bone environments were quantitatively *** addition,bone osteointegration around HP Mg was explored *** stress increases the degradation rate of HP Mg in vivo and in *** Mg degradation in vivo is more sensitive to stress factors than in vitro,but the sensitivity decreases with corrosion *** volume loss rate of HP Mg is multilinear with the applied stress and degradation *** volume of bone tissue surrounding HP Mg is larger in the no-stress group compared to the stressed groups,which is more pronounced with increasing implantation *** results provide valuable insights for optimiz-ing the design of HP Mg-based implants considering load *** will help to achieve a balance between the degradation rate of the implant and the regeneration rate of the surrounding bone.

关键词： High-purity magnesium Quantitative stresses Degradation Bone environments In vivo and in vitro

来源：评论

学校读者我要写书评

暂无评论

Achieving Superior Strength and Ductility of AlSi10Mg Alloy Fabricated by Selective Laser Melting with Large Laser Power and High Scanning Speed

引用

Acta Metallurgica Sinica(English Letters) 2022年第10期35卷 1665-1672页

作者： Jiahe Mei Ying Han Guoqing Zu Weiwei Zhu Yu Zhao Hua Chen Xu Ran Key Laboratory of Advanced Structural Materials Ministry of EducationSchool of Materials Science and EngineeringChangchun University of TechnologyChangchun130012China

AlSi10Mg alloy was prepared by selected laser melting(SLM)in a high laser power range 300–400 *** effects of energy density on the relative density,microstructure and mechanical properties of the SLMed AlSi10Mg alloy were *** results showed that the SLMed AlSi10Mg alloy fabricated at a laser power of 400 W and a scanning speed of 1800 mm/s had a relative density of 99.4%,a hardness of 147.8 HV,a tensile strength of 471.3 MPa,a yield strength of 307.1 MPa,and an elongation of 9.6%,exhibiting excellent comprehensive mechanical *** unique combination of the melt pool structure and microstructure caused by the large laser power and fast scanning was responsible for the excellent *** wide and shallow melt pool structure with few defects and proper overlapping between the continuous melt pools were *** growth of columnar crystals was inhibited by a large proportion of equiaxed grains formed at the border of melt pools,and numerous sub-structures were observed within theα-Al *** study provided a more efficient process parameters for the preparation of the SLMed AlSi10Mg *** enhanced mechanical property will help to broaden the application of the AlSi10Mg alloy in industry.

关键词： Selective laser melting AlSi10Mg alloy Melt pool Mechanical property

来源：评论

学校读者我要写书评

暂无评论

Integrated and holistic knowledge map of phase change materials for pavement:A scientometric analysis and bibliometric review

引用

Journal of Traffic and Transportation engineering(English Edition) 2024年第6期11卷 1317-1339页

作者： Jiasheng Dai Feng Ma Zhen Fu Chen Li Yingjie Hou Yalu Wen Yanzhe Zou Dongdong Yuan Wenhao Dong Ke Shi Key Laboratory for Special Area Highway Engineering of Ministry of Education Chang'an UniversityXi'an 710064China School of Materials Science and Engineering Chang'an UniversityXi'an 710064China

Elevated pavement temperatures contribute to the urban heat island effect and pose a risk of thermal damage to ***,regulating pavement temperature is paramount to ensure its longevity,enhance traffic safety,and preserve the *** change materials(PCMs)with the latent heat characteristic can store and release thermal energy via phase *** can effectively control pavement structure temperatures within a relatively narrow range,mitigating thermal stress on asphalt *** research aims to explore the current status and emerging trends in PCM integrated pavement engineering(PCMIPE)using the CiteSpace visual analysis *** publications were systematically curated from the Web of science core database,spanning 2011 to ***,the co-authorships network maps(country,institution,author),cocited network maps(co-cited journals,authors,and references),and keyword co-occurrence network maps were constructed to analyze the principal contributions in the PCMIPE field *** analysis provides an understanding of the field's strengths,research domains,and knowledge structure and identifies current research focal points and emerging *** findings reveal that research within the PCMIPE field is still in its early stages,with a predominant emphasis on material design and performance ***,future research is anticipated to expand into economic analyses and exploration of environmental effects when integrating PCMs into pavement ***,there is an emerging interest in investigating the synergy of PCMs with other functional pavement *** results underscore the potential of the PCMIPE field and emphasize the importance of future research endeavors.

关键词： Road engineering Phase change materials Pavement CiteSpace Visualization analysis

来源：评论

学校读者我要写书评

暂无评论

Effects of metal ion implantation(Fe,Ti,Zn and Zr)on mechanical properties,corrosion resistance and biocompatibility of WE43 Mg alloy

引用

Journal of Magnesium and Alloys 2025年第1期13卷 296-310页

作者： Lianhui Li Zhiqiang Zhang Dechuang Zhang Fugang Qi Yilong Dai Wenwen Wei Xiaoping Ouyang School of Materials Science and Engineering Xiangtan UniversityXiangtan 411105China Key Lab of Electromagnetic Processing of Materials Ministry of EducationNortheastern UniversityShenyang 110819China Christian Doppler Laboratory for Interfaces and Precipitation Engineering CDL-IPE Institute of Materials Science and TechnologyTU Wien 1060Austria

To improve the corrosion resistance of biodegradable Mg alloys,WE43 alloys were implanted with Fe,Ti,Zn and Zr ions at the same implantation *** surface morphology,valence state of elements,nano-hardness(NH),elastic modulus(EM),degradation rate and in vitro cell experiments of the modified WE43 alloys were systematically studied.A modified layer composed of Mg,MgO,the implanted elements and their oxides was formed on the modified *** high-speed metal ions caused severe surface lattice damage,the surface hardness of the substrate considerable *** tests demonstrated a substantial enhancement in the corrosion resistance of the modified alloys via the implantation of Ti and Zr ions,resulting in a reduction of the corrosion current density to 88.1±9.9 and 15.6±11.4μA cm^(−2),respectively,compared with the implantation of Fe and Zn *** tests showed that the implantation of Fe,Ti,Zn and Zr ions enhanced the anticoagulant and hemolytic resistance of the WE43 *** surface-modified samples showed negligible cytotoxicity(0-1)at 12.5%extract ***,the alloys implanted with Fe,Ti and Zn ions significantly promoted proliferation of human umbilical vein endothelial cells(HUVEC)compared with the unmodified *** results demonstrate that Ti ion implantation is the best choice for WE43 alloy modification to achieve outstanding corrosion resistance and biocompatibility.

关键词： Biomaterial Ion implantation Surface mechanical properties Corrosion rate Biocompatibility

来源：评论

学校读者我要写书评

暂无评论

Bilayer borophene:an efficient catalyst for hydrogen evolution reaction

引用

Frontiers of Chemical science and engineering 2024年第3期18卷 13-23页

作者： Na Xing Nan Gao Panbin Ye Xiaowei Yang Haifeng Wang Jijun Zhao College of Sciences/Xinjiang Production&Construction Corps Key Laboratory of Advanced Energy Storage Materials and Technologies Shihezi UniversityShihezi832000China Key Laboratory of Materials Modification by Laser Ion and Electron Beams(Ministry of Education)Dalian University of TechnologyDalian116024China School of Materials Science and Engineering Taizhou UniversityTaizhou318000China

The electrocatalytic hydrogen evolution reaction is a crucial technique for green hydrogen ***,finding affordable,stable,and efficient catalyst materials to replace noble metal catalysts remains a significant *** experimental breakthroughs in the synthesis of two-dimensional bilayer borophene provide a theoretical framework for exploring their physical and chemical *** this study,we systematically considered nine types of bilayer borophenes as potential electrocatalysts for the hydrogen evolution *** first-principles calculations revealed that bilayer borophenes exhibit high stability and excellent conductivity,possessing a relatively large specific surface area with abundant active *** surface boron atoms and the bridge sites between two boron atoms can serve as active sites,displaying high activity for the hydrogen evolution ***,the Gibbs free energy change associated with adsorption for these bilayer borophenes can reach as low as−0.002 eV,and the Tafel reaction energy barriers are lower(0.70 eV)than those on ***,the hydrogen evolution reaction activity of these two-dimensional bilayer borophenes can be described by engineering their work ***,we considered the effect of pH on hydrogen evolution reaction activity,with significant activity observed in an acidic *** theoretical results reveal the excellent catalytic performance of two-dimensional bilayer borophenes and provide crucial guidance for the experimental exploration of multilayer boron for various energy applications.

关键词： bilayer borophene hydrogen evolution reaction work function pH effect

来源：评论

学校读者我要写书评

暂无评论

Multi-scale Modeling and Simulation of Low Pressure Die Casting of Aluminum Alloys 75

Multi-scale Modeling and Simulation of Low Pressure Die Cast...

引用

75th World Foundry Congress, WFC 2024

作者： Tan, Yunxiang Ma, Juhuai Xu, Qingyan Key Laboratory for Advanced Materials Processing Technology Ministry of Education School of Materials Science and Engineering Tsinghua University Beijing100084 China

Aluminum alloys distinguish themselves through their notable properties, including low weight, robust strength, and versatile formability, which facilitate the production of extensive, intricate, and thin-walled castings using low pressure die casting processes. These distinctive features significantly contribute to the advancement of automotive lightweighting initiatives, which are essential in optimizing fuel consumption and mitigating environmental footprints. This study aims to optimize the low pressure die casting process of Al-Si alloys for automotive components through integrated numerical simulations. A software framework has been developed to couple macro-simulation of mold filling and solidification with microstructural evolution and mechanical property prediction. A novel nucleation model, validated with experimental data, enhances the accuracy of primary phase growth simulations. Models for dendritic and eutectic phase growth are also presented, considering solute diffusion, growth kinetics, and interface anisotropy. This multiscale approach enables the prediction of microstructures and mechanical properties, facilitating the optimization of casting parameters to enhance the final properties of the castings. The results demonstrate the potential to reduce production costs and accelerate the development cycle for aluminum alloy castings. © 2024 75th World Foundry Congress, WFC 2024. All rights reserved.

关键词： Aluminum alloys

来源：评论

学校读者我要写书评

暂无评论

interface issues and challenges for NASICON-based solid-state sodium-metal batteries

Advanced Powder Materials

引用

advanced Powder materials 2024年第3期3卷 32-47页

作者： Le Xiang Xiutao Li Jin Xiao Lingyun Zhu Xiaowen Zhan School of Materials Science and Engineering School of Chemistry and Chemical EngineeringKey Laboratory of Structure and Functional Regulation of Hybrid Materials of Ministry of EducationAnhui UniversityHefei 230601China

All-solid-state sodium(Na)-metal batteries(ASSSMBs)are considered promising candidates for large-scale energy storage systems due to their abundant sodium resources,unparalleled safety performance,and impressive energy *** superionic conductors(NASICONs)are among the best enablers of ASSSMBs in view of their high ionic conductivity,ease of synthesis,and excellent thermal stability and good electrochemical/chemical compatibility with common ***,challenges surrounding the NASICON/electrode interface,such as high interfacial resistance and dendrite formation,have hindered the development of practical ASSSMBs based on *** review starts with an explicit summary of the interface problems between the metallic Na anode and NASICON arising from mechanical,chemical,and electrochemical aspects(i.e.,poor interface contact,insulating side-reaction products,and irregular dendrite growth).Subsequently,we systematically analyze and logically categorize modification strategies for addressing anode interface problems and provide a comprehensive discussion on the underlying enhancement *** such,we identify underlying and universal interface enhancement mechanisms by comparatively studying various modification ***,we briefly summarize the challenges in the cathode/electrolyte interface and early-stage research efforts in constructing stable cathode/electrolyte interface and fabricating high-performance composite ***,key suggestions and future prospectives for the advancement of NASICON-based ASSSMBs are outlined.

关键词： All-solid-state sodium-metal batteries NASICON solid electrolytes interface modification Sodium dendrites Electrochemical performances

来源：评论

学校读者我要写书评

暂无评论

Effects of carbon content on the microstructure and tensile properties of a low-density steel

引用

International Journal of Minerals,Metallurgy and materials 2025年第2期32卷 391-401页

作者： Yongxuan Shang Mingyu Fan Shuyong Jiang Zhongwu Zhang Key Laboratory of Superlight Materials and Surface Technology Ministry of EducationCollege of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001China State Key Laboratory of Metal Material for Marine Equipment and Application Iron&Steel Research Institute of Ansteel Group CorporationAnshan 114009China

Carbon can change the phase components of low-density steels and influence the mechanical *** this study,a new method to control the carbon content and avoid the formation ofδ-ferrite by decarburization treatment was *** microstructural changes and mechanical characteristics with carbon content induced by decarburization were systematically ***-Jaoul(C-J)analysis was employed to examine the work hardening characteristics during the tensile *** decarburization by heat treatments,the carbon content within the austenite phase decreased,while Mn and Al were almost unchanged;this made the steel with full austenite transform into the austenite and ferrite dual ***,(Ti,V)C carbides existed in both matrix phase and the mole fraction almost the *** addition,the formation of other carbides *** loss induced a decrease in strength due to the weakening of the carbon solid *** the steel with the single austinite,the deformation mode of austenite was the dislocation planar glide,resulting in the formation of *** the dual-phase steel,the deformation occurred by the dislocation planar glide of austenite first,with the increase in strain,the cross slip of ferrite took place,forming dislocation cells in *** the late stage of deformation,the work hardening of austinite increased rapidly,while that of ferrite increased slightly.

关键词： low-density steels carbon content decarburization strengthening mechanisms work hardening behavior

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：