检索结果-南通市图书馆

Nano-Micro Letters 2025年第2期17卷 401-416页

作者： Chen Li Leilei Liang Baoshan Zhang Yi Yang Guangbin Ji School of Electronic science and Engineering Nanjing UniversityNanjing 210093People’s Republic of China College of Materials science and technology Nanjing University of Aeronautics and AstronauticsNanjing 210016People’s Republic of China

Developing advanced stealth devices to cope with radar-infrared(IR)fusion detection and diverse application scenarios is increasingly demanded,which faces significant challenges due to conflicting microwave and IR cloaking mechanisms and functional integration ***,we propose a multiscale hierarchical structure design,integrating wrinkled MXene IR shielding layer and flexible Fe_(3)O_(4)@C/PDMS microwave absorption *** top wrinkled MXene layer induces the intensive diffuse reflection effect,shielding IR radiation signals while allowing microwave to pass ***,the permeable microwaves are assimilated into the bottom Fe_(3)O_(4)@C/PDMS layer via strong magneto-electric *** theoretical and experimental optimization,the assembled stealth devices realize a near-perfect stealth capability in both X-band(8–12 GHz)and long-wave infrared(8–14μm)wavelength ***,it delivers a radar cross-section reduction of−20 dB m^(2),a large apparent temperature modulation range(ΔT=70℃),and a low average IR emissivity of ***,the optimal device demonstrates exceptional curved surface conformability,self-cleaning capability(contact angle≈129°),and abrasion resistance(recovery time≈5 s).This design strategy promotes the development of multispectral stealth technology and reinforces its applicability and durability in complex and hostile environments.

关键词： Microwave absorption Radar-infrared compatible stealth Wrinkled MXene Magneto-dielectric synergy Multifunction

Prussian Blue Analogue‑Templated Nanocomposites for Alkali‑Ion Batteries:Progress and Perspective

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 216-261页

作者： Jian‑En Zhou Yilin Li Xiaoming Lin Jiaye Ye Key Laboratory of Theoretical Chemistry of Environment Ministry of EducationSchool of ChemistrySouth China Normal UniversityGuangzhou 510006People’s Republic of China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Lithium-ion batteries(LIBs)have dominated the portable electronic and electrochemical energy markets since their commercialisation,whose high cost and lithium scarcity have prompted the development of other alkali-ion batteries(AIBs)including sodium-ion batteries(SIBs)and potassium-ion batteries(PIBs).Owing to larger ion sizes of Na^(+)and K^(+)compared with Li^(+),nanocomposites with excellent crystallinity orientation and well-developed porosity show unprecedented potential for advanced lithium/sodium/potassium *** enticing open rigid framework structures,Prussian blue analogues(PBAs)remain promising self-sacrificial templates for the preparation of various nanocomposites,whose appeal originates from the well-retained porous structures and exceptional electrochemical activities after thermal *** review focuses on the recent progress of PBA-derived nanocomposites from their fabrication,lithium/sodium/potassium storage mechanism,and applications in AIBs(LIBs,SIBs,and PIBs).To distinguish various PBA derivatives,the working mechanism and applications of PBA-templated metal oxides,metal chalcogenides,metal phosphides,and other nanocomposites are systematically evaluated,facilitating the establishment of a structure–activity correlation for these *** on the fruitful achievements of PBA-derived nanocomposites,perspectives for their future development are envisioned,aiming to narrow down the gap between laboratory study and industrial reality.

关键词： Prussian blue analogues Self-sacrificial template Lithium-ion batteries Sodium-ion batteries Potassium-ion batteries

Trimetallic mesoporous PdCuRu for efficient formate electrosynthesis from polyethylene terephthalate recycling

在线全文

学校读者我要写书评

暂无评论

science China Chemistry 2025年

作者： Yuting Li Huiqin Yao Lizhi Sun Shu Han Xiaoxiang Xu Guangyin Fan Ben Liu College of Chemistry and Materials science Sichuan Normal University Key Laboratory of Green Chemistry and technology of Ministry of Education College of Chemistry Sichuan University School of Basic Medical sciences Ningxia Medical University Department of Otorhinolaryngology-Head and Neck Surgery Zhongnan Hospital of Wuhan University

Electrochemical recycling of waste polyethylene terephthalate（PET） plastics represents a green and sustainable route to produce valuable fuels and address serious environmental issues. Despite some encouraged achievements, their progress is still slower because of the lack of highly active and selective electrocatalysts. Here, we reported an efficient PET recycling route with trimetallic PdCuRu mesoporous nanospheres（MSs） as a high-performance electrocatalyst that achieved selective electrosynthesis of valuable formate from PET hydrolysate（PETH） electrooxidation. Penetrated metal mesopores and trimetallic compositions of PdCuRu MSs synergistically optimized electronic structures of Pd sites and changed chemisorption properties of intermediates, which disclosed a high formate Faradic efficiency of 97% and impressive yield rate of 0.49 mmol h-1cm-2in an alkaline solution. Meanwhile, this electrocatalyst held good electrocatalytic stability, retaining high formate Faradic efficiency and yield rate even being performed for 10 cycles, which highlighted its potential applications for practical PET recycling. Our study provides a powerful strategy for designing high-performance electrocatalysts toward selective electro-synthesis of valuable fuels from various waste plastics.

关键词：

Review of precipitation strengthening in ultrahigh-strength martensitic steel

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 256-269页

作者： Zhihao Tian Chunlei Shang Chaolei Zhang Xiaoye Zhou Honghui Wu Shuize Wang Guilin Wu Junheng Gao Jiaming Zhu Xinping Mao Institute for Carbon Neutrality University of Science and Technology BeijingBeijing 100083China Institute of Steel Sustainable technology Liaoning Academy of MaterialsShenyang 110004China Department of Materials science and Engineering Shenzhen MSU-BIT UniversityShenzhen 518172China Institute of Materials Intelligent technology Liaoning Academy of MaterialsShenyang 110004China School of Civil Engineering Shandong UniversityJinan 250061China

Martensite is an important microstructure in ultrahigh-strength steels,and enhancing the strength of martensitic steels often involves the introduction of precipitated phases within the martensitic *** considerable research efforts devoted to this area,a systematic summary of these advancements is *** review focuses on the precipitates prevalent in ultrahigh-strength martensitic steel,primarily carbides(e.g.,MC,M_(2)C,and M_(3)C)and intermetallic compounds(e.g.,Ni Al,Ni_(3)X,and Fe_(2)Mo).The precipitation-strengthening effect of these precipitates on ultrahigh-strength martensitic steel is discussed from the aspects of heat treatment processes,microstructure of precipitate-strengthened martensite matrix,and mechanical ***,a perspective on the development of precipitation-strengthened martensitic steel is presented to contribute to the advancement of ultrahigh-strength martensitic *** review highlights significant findings,ongoing challenges,and opportunities in the development of ultrahigh-strength martensitic steel.

关键词： ultrahigh-strength martensitic steel precipitation strengthening mechanical property carbide intermetallic compound

Li,Na,and Cs-based metal-organic frameworks for room temperature phosphorescence applications

在线全文

学校读者我要写书评

暂无评论

science China Chemistry 2025年

作者： Jiaqi Ma Rui Feng Yanyuan Jia Mingshi Zhang Shuo Guo College of Chemistry and Chemical Engineering Inner Mongolia University School of Materials science and Engineering Smart Sensing Interdisciplinary Science Center Nankai University & TKL of Metal and Molecule Based Material Chemistry Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education) Nankai University Department of Chemistry and Biochemistry University of California San Diego

The conventional design of metal-organic frameworks (MOFs) with room-temperature phosphorescence (RTP) mostly relies on using heavy metals,as the heavy atom effect can effectively increase the efficiency of intersystem crossing (ISC) to get a better phosphorescence *** the first time,we reported the highly efficient RTP of a lithium-based MOF IMU-101 with a lifetime (τ) of 299 ms and a quantum yield (QY) of 4.91%.In addition,MOFs IMU-102 and IMU-103,with sodium and cesium as metal nodes,were successfully *** phosphorescence properties of this series of alkali metal MOFs were systematically studied and *** crystallography and computational calculation show that the mechanism for achieving RTP for this material lies in the ultrashort coordination bond of Li,which enables the reduction of non-radiative ***-101,as a cheap and environmentally friendly room-temperature phosphorescent material,has been further developed into composite polymer inks and bulk *** makes them promising for applications in anti-counterfeiting and information encryption.

关键词：

Discrete element modelling of the quasi-static uniaxial compression of individual infant formula agglomerates

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Particuology 2012年第5期10卷 523-531页

作者： Kevin J.Hanley Catherine O'Sullivan Edmond P.Byrne Kevin Cronin Department of Process and Chemical Engineering University College CorkCorkIreland Department of Civil and Environmental Engineering Skempton BuildingImperial College LondonLondon SW7 2AZ United Kingdom

Infant formula is usually produced in an agglomerated powder form. These agglomerates are subjected to many transient forces following their manufacture. These can be difficult to quantify experimentally because of their small magnitudes and short durations, Numerical models have the potential to address this gap in the experimental data. The objective of the research described here was to calibrate a discrete element model for these agglomerates using experimental data obtained for quasi-static loading, and to use this model to study the mechanics of the particle response in detail. The Taguchi method was previously proposed as a viable calibration approach for discrete element models. In this work, the method was assessed for calibration of the model parameters （e.g., bond stiffnesses and strengths） considering three responses： the force at failure, strain at failure and agglomerate stiffness. The Weibull moduli for the simulation results and the experimental data were almost identical following calibration and the 37% characteristic stresses were similar. An analysis of the energy terms in the model provided useful insight into the model response. The bond energy and the normal force exerted on the platens were strongly correlated, and bond breakage events coincided with the highest energy dissipation rates.

关键词： Discrete element modellingUniaxial compressionQuasi-static crushingSimulationGranular materialsTaguchi methods

Environmentally-friendly harvesting TiO2 nanospheres and V2O5 microrods from spent selective catalytic reduction catalysts

在线全文

学校读者我要写书评

暂无评论

Progress in Natural science:Materials International 2021年第6期31卷 858-864页

作者： Hua-Jun Chen Rui Wang Yan-Ling Yang Xiao-Lei Shi Siyu Lu Zhi-Gang Chen School of Environment and Chemistry Luoyang Institute of Science and Technology School of Materials science and Engineering Shaanxi Key Laboratory of Green Preparation and Functionalization for Inorganic Materials Shaanxi University of Science and Technology Centre for Future Materials University of Southern Queensland Springfield Central School of Mechanical and Mining Engineering The University of Queensland Green Catalysis Center and College of Chemistry Zhengzhou University

Spent selective catalytic reduction(SCR) catalysts are defined as hazardous wastes because of the toxicity of V2O5to the ecological environment. Recycling of V2O5and TiO2from the spent SCR catalysts has strikingly social and environmental benefits as well as economic values. In this work, a “NaOH + Na2CO3” system was employed to recycle 99.2% of anatase/rutile TiO2nanospheres with a nanospherical morphology from the spent SCR catalysts by a simple sintering-leaching process. The observed photocatalytic performance of anatase/rutile TiO2nanospheres was higher than that of the other TiO2recovered from the spent SCR catalysts,commercial TiO2, and chemosynthetic TiO2, which can be ascribed to the enhanced separation of photo-excited electron/hole in a direct Z-scheme of anatase/rutile TiO2homostructures. Additionally, high-purity V2O5microrods with high H2S removal performance were efficiently prepared by a hydrothermal method in the leaching solution, which is superior to the traditional method including NH4VO3precipitation and solvent extraction as the present method can recycle vanadate from low-grade filtrate with a 99.6% of recovery *** study develops an alternative method for controlling pollution of vanadate to soil and water and recycling of valuable metals.

关键词： TiO2 nanospheres V2O5 microrods Hydrothermal Spent selective catalytic reduction catalyst

调控串联三金属AuAgCu异质结上*CO中间体的吸附构型,促进CO2通过不对称C-C耦合电还原为乙醇（英文）

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

science China Materials 2025年第1期 173-179页

作者：石永霞李俊俊闵志雯王鑫亿侯曼马昊庄泽超秦毓辰孙源淼王定胜张志成 Key Laboratory of Organic Integrated Circuit Ministry of Education & Tianjin Key Laboratory of Molecular Optoelectronic Sciences Department of Chemistry School of Science Tianjin University Faculty of Materials science and Energy Engineering/Institute of technology for Carbon Neutrality Shenzhen Institute of Advanced Technology Chinese Academy of Sciences Department of Chemistry Tsinghua University College of sciences Henan Agricultural University

在电化学CO2还原反应中,合理调节关键中间体*CO的吸附构型可以促进碳-碳（C–C）偶联生成多碳产物.在这项工作中,理论计算表明,通过顶式吸附的*CHO和三重位吸附的*CO在Cu位点上进行C–C耦合是一种能量有利的途径.作为概念验证,制备了串...

在电化学CO2还原反应中,合理调节关键中间体*CO的吸附构型可以促进碳-碳（C–C）偶联生成多碳产物.在这项工作中,理论计算表明,通过顶式吸附的*CHO和三重位吸附的*CO在Cu位点上进行C–C耦合是一种能量有利的途径.作为概念验证,制备了串联三金属AuAgCu异质结（Au@Ag/Cu）,其中Au@Ag位点上顶式吸附的*CO溢流到Cu位点后转变为三重位吸附,然后该三重位吸附的*CO和Cu位点上顶式吸附的*CHO进行不对称C–C偶联,促进了乙醇产物的形成.在-0.3 V ***的低电位下,乙醇法拉第效率最高为65.9%.我们的工作通过调节中间产物的吸附构型,为串联催化的内在机制提供了新的见解.

关键词：

同方期刊数据库

A review of the current state of biofuels production from lignocellulosic biomass using thermochemical conversion routes

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2019年第7期27卷 1523-1535页

作者： Paola Ibarra-Gonzalez Ben-Guang Rong Department of Chemical Engineering Biotechnology and Environmental Technology University of Southern Denmark

The rapid increase in energy demand,the extensive use of fossil fuels and the urgent need to reduce the carbon dioxide emissions have raised concerns in the transportation *** renewable and sustainable sources have become the ultimate solution to overcome the expected depletion of fossil *** conversion of lignocellulosic biomass to liquid(BtL)transportation fuels seems to be a promising path and presents advantages over first generation biofuels and fossil ***,development of BtL systems is critical to increase the potential of this resource in a sustainable and economic *** of lignocellulosic BtL transportation fuels,such as,gasoline,diesel and jet fuel can be accomplished through various thermochemical processes and processing *** major steps for the production of BtL fuels involve feedstock selection,physical pretreatment,production of bio-oil,upgrading of bio-oil to transportation fuels and recovery of value-added *** present work is aiming to give a comprehensive review of the current process technologies following these major steps and the current scenarios of biomass to liquid facilities for the production of biofuels.

关键词： Biofuels Lignocellulosic biomass Process route Thermochemical conversion Upgrading Separation

Synergistic effect of carbon nanotube and encapsulated carbon layer enabling high-performance SnS_2-based anode for lithium storage

在线全文

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2024年第10期97卷 700-709,I0015页

作者： Chunwei Dong Yongjin Xia Zhijiang Su Zhihua Han Yang Dong Jingyun Chen Fei Hao Qiyao Yu Qing Jiang Jiaye Ye national Instituteof Clean-and-Low-Carbon Energy Beijing 102209China Key Laboratory of Automobile Materials Ministry of EducationSchool of Materials Science and EngineeringJilin UniversityChangchun 130022JilinChina State Key Laboratory of Explosion science and technology School of Mechatronical EngineeringBeijing Institute of TechnologyBeijing 100081China School of Chemistry and Physics Faculty of ScienceQueensland University of Technology2 George StreetBrisbaneQLD 4000Australia Centre for Materials science Queensland University of Technology2 George StreetBrisbaneQLD 4000Australia

Tin disulfide(SnS_(2)),due to large interlayer spacing and high theoretical capacity,is regarded as a prospective anode material for lithium-ion ***,the poor electron conductivity of SnS_(2) and huge volumetric change during the lithiation/delithiation process lead to a rapid capacity decay of the battery,hindering its *** address these issues,herein,SnS_(2) is in-situ grown on the surface of carbon nanotubes(CNT)and then encapsulated with a layer of porous amorphous carbon(CNT/SnS_(2)@C)by simple solvothermal and further carbonization *** synergistic effect of CNT and porous carbon layer not only enhances the electrical co nductivity of SnS_(2) but also limits the huge volumetric change to avoid the pulverization and detachment of SnS_(2).Density functional theo ry calculations show that CNT/SnS_(2)@C has high Li^(+)adsorption and lithium storage capacity achieving high reaction ***,cells with the CNT/SnS_(2)@C anode exhibit a high lithium storage capacity of 837mAh/g after 100 cycles at 0.1 A/g and retaining a capacity of 529.8 mAh/g under 1.0 A/g after 1000 *** study provides a fundamental understanding of the electrochemical processes and beneficial guidance to design high-performance SnS_(2)-based anodes for LIBs.

关键词： Lithium-ion batteries Porous amorphous carbon Carbon nanotubes SnS_(2)-based anode Density functional theory calculations