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Journal of Energy Chemistry 2025年第01期 612-620页

作者： Weiwei Yu Xinbao Zhang Hongyu Chen Yanan Wang Shaoguo Li Fucun Chen Zhenni Liu Xiujie Li Xiangxue Zhu state key laboratory of Catalysis Dalian Institute of Chemical Physics Chinese Academy of Sciences

Selective hydrogenation of furfural to furfuryl alcohol is a great challenge in the hydrogenation field due to thermodynamic preference for hydrogenation of C=C over C=***,a novel Al2O3/C-u hybrid catalyst,composed of N-modified dendritic carbon networks supporting Al2O3nanoparticles,was successfully prepared via carbonizing the freeze-dried gel from spontaneous cross-linking of alginate,Al3+and *** obtained carbon-supported Al2O3hybrid catalyst has a high ratio （31%） of Al species in pentahedral-coordinated *** introduction of urea enhances the surface N content,the ratio of pyrrolic N,and specific surface area of catalyst,leading to improved adsorption capacity of C=O and the accessibility of active *** the furfural hydrogenation reaction with isopropyl alcohol as hydrogen donor,Al2O3/C-u catalyst achieved a 90%conversion of furfural with 98.0% selectivity to furfuryl alcohol,outperforming that of commercial γ-***,Al2O3/C-u demonstrates excellent catalytic stability in the recycling tests attributed to the synergistic effect of abundant weak Lewis acid sites and the anchoring effect of the carbon network on *** work provides an innovative and facile strategy for fabrication of carbon-supported Al2O3hybrid catalysts with rich AlVspecies,serving as a high selective hydrogenation catalyst through MPV reaction route.

关键词：

Influence of pH,immersion time,and benzotriazole concentration on copper corrosion in citric acid based slurries

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Chinese Science Bulletin 2011年第11期56卷 1158-1164页

作者： LU XiaoRen LU XinChun LUO JianBin state key laboratory oftribology Tsinghua University Beijing 100084 China School of Mechanical Engineering Shenyang University of Technology Shenyang 110870 China

Copper corrosion in citric acid based slurries with or without benzotriazole (BTA) was investigated as a function of the slurry pH,immersion time and BTA concentration by static etching and electrochemical *** chemical composition of the corroded surface was determined using X-ray photoelectron spectroscopy (XPS).The static etching rate of copper in a H2O2 +citric acid+BTA slurry was lower than that in a H2O2 +citric acid slurry at pH *** the pH of the slurry was >8 or <4.4,the results were reversed and the static etching rate of copper increased when BTA was added to the H2O2 +citric acid *** inhibitory effect of BTA in the H2O2 +citric acid slurry at pH 6 increased with the increasing immersion time of the *** corrosion current density of copper gradually decreased with increasing BTA concentration in slurry.

关键词：泥浆浓度浸泡时间柠檬酸 pH值铜腐蚀苯并三氮唑 X射线光电子能谱 H202

Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy and Materials 2025年第02期 311-324页

作者： Qian Yin Fan Wen Zhigang Tao Hai Pu Tianci Deng Yaoyao Meng Qingbin Meng Hongwen Jing Bo Meng Jiangyu Wu state key laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and Technology state key laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and Technology state key laboratory for Geomechanics&Deep Underground Engineering China University of Mining and Technology (Beijing) key laboratory of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of Engineering

The mechanical behavior of cemented gangue backfill materials（CGBMs） is closely related to particle size distribution（PSD）of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples（CGBSs） with various carbon nanotube concentrations(PCNT) that satisfied fractal theory for the PSD of *** mechanical properties,energy dissipations,and failure mechanisms of the CGBSs under true triaxial compression were systematically *** results indicate that appropriate carbon nanotubes（CNTs） effectively enhance the mechanical properties and energy dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at PCNTof 0.08wt%.Taking PSD fractal dimension（D） of 2.500 as an example,compared to that of CGBS without CNT,the peak strength（σp）,axial peak strain(ε1,p),elastic strain energy（Ue）,and dissipated energy（Ud） increased by 12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration, manifesting a decrease in ρp,ε1,p,and the volumetric strain increment（Δεv） when PCNTincreases from 0.08wt% to 0.12wt%.Moreover,the addition of CNTs improved the integrity of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the *** σpand Udfirstly increase and then decrease with increasing D,and porosity shows the opposite *** ε1,pand Δεvare negatively correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε1,p=0.05079,Δεv=0.01990) due to the frictional slip effect caused by coarse *** increasing D,the failure modes of CGBSs are sequentially manifested as oblique shear failure, "Y-shaped" shear failure,and conjugate shear failure.

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Porous Organic Cage‑Based Quasi‑Solid‑state Electrolyte with Cavity‑Induced Anion‑Trapping Effect for Long‑Life Lithium Metal Batteries

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Nano-Micro Letters 2025年第2期17卷 376-386页

作者： Wei-Min Qin Zhongliang Li Wen‑Xia Su Jia‑Min Hu Hanqin Zou Zhixuan Wu Zhiqin Ruan Yue‑Peng Cai Kang Li Qifeng Zheng School of Chemistry South China Normal UniversityGuangzhou 510006People’s Republic of China key laboratory of Functional Metal‑Organic Compounds of Hunan Province College of Chemistry and Material ScienceHengyang Normal UniversityHengyang 421008People’s Republic of China Guangzhou key laboratory of Energy Conversion and Energy Storage Materials Guangzhou 510006People’s Republic of China

Porous organic cages(POCs)with permanent porosity and excellent host–guest property hold great potentials in regulating ion transport behavior,yet their feasibility as solid-state electrolytes has never been testified in a practical ***,we design and fabricate a quasi-solid-state electrolyte(QSSE)based on a POC to enable the stable operation of Li-metal batteries(LMBs).Benefiting from the ordered channels and cavity-induced anion-trapping effect of POC,the resulting POC-based QSSE exhibits a high Li+transference number of 0.67 and a high ionic conductivity of 1.25×10^(−4) S cm^(−1) with a low activation energy of 0.17 *** allow for homogeneous Li deposition and highly reversible Li plating/stripping for over 2000 *** a proof of concept,the LMB assembled with POC-based QSSE demonstrates extremely stable cycling performance with 85%capacity retention after 1000 ***,our work demonstrates the practical applicability of POC as SSEs for LMBs and could be extended to other energy-storage systems,such as Na and K batteries.

关键词： Porous organic cage Cavity-induced anion-trapping Quasi-solid-state electrolyte Homogeneous Li+flux Lithium metal battery

基于共价有机框架的分子工程高效光催化CO2还原为CO（英文）

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Science China Materials 2025年第01期 165-172页

作者：赵文玲孙磊杨丽张瑞玲任国庆王森吴昊康欣晨邓伟侨刘乘乘 Institute of Frontier Chemistry School of Chemistry and Chemical Engineering Shandong University Beijing National laboratory for Molecular Sciences Key Laboratory of Colloid and Interface and Thermodynamics Institute of Chemistry Chinese Academy of Sciences College of Chemistry Chemical Engineering and Resource Utilization Northeast Forestry University state key laboratory of Microbial Technology Shandong University

共价有机框架广泛应用于光催化CO2还原中.然而,它们在分离光生载流子方面的效率有限,且催化位点较少,因此其光催化性能有待提高.本文利用分子工程设计了一种芘基共价有机框架（PyTa-H COF）,并将钴单原子（Co SACs）负载在COF骨架中用...

共价有机框架广泛应用于光催化CO2还原中.然而,它们在分离光生载流子方面的效率有限,且催化位点较少,因此其光催化性能有待提高.本文利用分子工程设计了一种芘基共价有机框架（PyTa-H COF）,并将钴单原子（Co SACs）负载在COF骨架中用于二氧化碳还原.在COF中,芘基团可以增强可见光捕获能力和电荷分离能力, Co SACs可以加速光生载流子的迁移及降低决速步的反应能垒.在可见光照射下,PyTa-H@Co在4小时内的CO产率为18.36 mmol g-1h-1,选择性为94%,其性能与目前报道的COFs的最佳性能相当.密度泛函理论计算表明,Co SACs稳定了*COOH中间体,并大大降低了决定性步骤的能垒,从而获得了优异的光催化性能.本工作通过分子工程设计,突出了催化剂结构和功能在提高光催化效率方面的重要作用.

关键词：

Measuring-basis-encrypted six-state quantum key distribution scheme

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Progress in Natural Science:Materials International 2006年第1期16卷 84-89页

作者： CHEN Pan1, DENG Fuguo1, WANG Pingxiao1 and LONG Guilu1,2 (key laboratory for Quantum Information and Measurements and Department of Physics, Tsinghua University, Beijing 100084, China 2. key laboratory for Atomic and Molecular NanoSciences, Tsinghua University, Beijing 100084, China) [a]Department of Physics Tsinghua University Key Laboratory for Quantum Information and Measurements Beijing China [b]Tsinghua University Key Laboratory for Atomic and Molecular NanoSciences Beijing China

A six-state quantum key distribution scheme with measuring-basis encryption technique, which is based on the six-state protocol and the MBE protocol, is proposed. In this modified six-state quantum key distribution protocol, Alice and Bob use a control key to synchronize the use of their measuring-basis so that they always use the same measuring-basis. This modified six-state quantum key distribution protocol retains the advantage of higher security and at the same time has a higher efficiency.

关键词： quantum key distribution measuring-basis encrypted six-state security.

Bioinspired Passive Tactile Sensors Enabled by Reversible Polarization of Conjugated Polymers

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Nano-Micro Letters 2025年第1期17卷 361-377页

作者： Feng He Sitong Chen Ruili Zhou Hanyu Diao Yangyang Han Xiaodong Wu School of Mechanical Engineering Sichuan UniversityChengdu 610065People’s Republic of China School of Software Engineering Chongqing University of Posts and TelecommunicationsChongqing 400065People’s Republic of China state key laboratory of Polymer Materials Engineering Sichuan UniversityChengdu 610065People’s Republic of China

Tactile perception plays a vital role for the human body and is also highly desired for smart prosthesis and advanced *** to active sensing devices,passive piezoelectric and triboelectric tactile sensors consume less power,but lack the capability to resolve static ***,we address this issue by utilizing the unique polarization chemistry of conjugated polymers for the first time and propose a new type of bioinspired,passive,and bio-friendly tactile sensors for resolving both static and dynamic ***,to emulate the polarization process of natural sensory cells,conjugated polymers(including poly(3,4-ethylenedioxythiophen e):poly(styrenesulfonate),polyaniline,or polypyrrole)are controllably polarized into two opposite states to create artificial potential *** controllable and reversible polarization process of the conjugated polymers is fully in situ ***,a micro-structured ionic electrolyte is employed to imitate the natural ion channels and to encode external touch stimulations into the variation in potential difference *** with the currently existing tactile sensing devices,the developed tactile sensors feature distinct characteristics including fully organic composition,high sensitivity(up to 773 mV N^(−1)),ultralow power consumption(nW),as well as superior *** demonstrations,both single point tactile perception(surface texture perception and material property perception)and two-dimensional tactile recognitions(shape or profile perception)with high accuracy are successfully realized using self-defined machine learning *** tactile sensing concept innovation based on the polarization chemistry of conjugated polymers opens up a new path to create robotic tactile sensors and prosthetic electronic skins.

关键词： Passive tactile sensors Reversible polarization of conjugated polymers Tactile perception Machine learning algorithm Object recognition

Relationship between the geometric features of carbon steel cavitation erosion debris and the cavitation erosion stages

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Chinese Science Bulletin 2010年第7期55卷 670-676页

作者： LIU ShiHan CHEN DaRong state key laboratory oftribology Tsinghua University Beij'ing 100084 China The First Aviation College of the Air Force PLA Xinyang 464000 China

The debris produced in vibration cavitation tests of three kinds of carbon steel were *** geometric features were analyzed quantitatively and observed respectively by a profilometer and a scanning electronic microscope(SEM) with reference to the investigation of the cavitation damaged surface by SEM and X-ray diffraction(XRD) .It was found that among the debris produced in all cavitation erosion stages,more than 45%were platelets because of the occurrence of dislocation and cleavage fracture,and only less than 25%were *** number of granule was small in the first cavitation erosion stage and increased rapidly to the number comparable with that of platelets in the next stage,and then reduced in the third *** sphericity values of the debris varied in accordance with the stages of cavitation damage,which were 0.3―0.4 in the incubation stage,0.5―0.7 in the acceleration stage and not less than 0.5 in the maximum rate stage,although a slight decrease occurred in the third stage.

关键词：几何特征碳素钢空蚀扫描电子显微镜 X射线衍射仪扫描电镜血小板数振动试验

Anomalous quality factor evolution of induced transparency in a virtualized coupled-oscillator system

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 148-155页

作者： Yunhan Yang Han Jia Tuo Liu Yuzhen Yang Jun Yang key laboratory of Noise and Vibration Research Institute of Acoustics Chinese Academy of Sciences University of Chinese Academy of Sciences state key laboratory of Acoustics Institute of Acoustics Chinese Academy of Sciences

The phenomenon of induced transparency, characterized by a high quality(Q) factor, holds significant importance in the fields of high-precision sensing, energy storage and wave manipulation. Conventional transparency systems are often constrained by the limited experimentally accessible parameter space and the lack of independent control over intrinsic parameters, thereby hindering advanced research on high-Q effects. Here we propose a virtualized coupled-oscillator system that enables reconfigurable induced transparency in the reflection spectrum. By virtually incorporating a pair of coupled oscillators into an individual acoustic meta-atom, we achieve the manipulation of induced transparency in a decoupled, wide-ranging, and elaborate manner. Exploiting the diverse evolutions across the intrinsic parameter space, we show experimentally a counter-intuitive increase in the Q-factor of the transparency window, which is attributed to the enhanced dissipation of the bright ***, a constant group delay at the center frequency is observed accompanying this evolution. Our work demonstrates an intriguing platform as well as a novel strategy to engineer high-Q induced transparency phenomenon, and paves the way towards applications in programmable acoustic sensors, filters and slow-wave devices.

关键词：

Multiple Tin Compounds Modified Carbon Fibers to Construct Heterogeneous Interfaces for Corrosion Prevention and Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 507-527页

作者： Zhiqiang Guo Di Lan Zirui Jia Zhenguo Gao Xuetao Shi Mukun He Hua Guo Guanglei Wu Pengfei Yin College of Science Sichuan Agricultural UniversityYa’an 625014People’s Republic of China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002People’s Republic of China Institute of Materials for Energy and Environment State Key Laboratory of Bio‑Fibers and Eco‑TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071People’s Republic of China Shaanxi key laboratory of Macromolecular Science and Technology School of Chemistry and Chemical EngineeringNorthwestern Polytechnical UniversityXi’anShaanxi 710072People’s Republic of China

Currently,the demand for electromagnetic wave(EMW)absorbing materials with specific functions and capable of withstanding harsh environments is becoming increasingly ***-component interface engineering is considered an effective means to achieve high-efficiency EMW ***,interface modulation engineering has not been fully discussed and has great potential in the field of EMW *** this study,multi-component tin compound fiber composites based on carbon fiber(CF)substrate were prepared by electrospinning,hydrothermal synthesis,and high-temperature thermal *** utilizing the different properties of different substances,rich heterogeneous interfaces are *** effectively promotes charge transfer and enhances interfacial polarization and conduction *** prepared SnS/SnS_(2)/SnO_(2)/CF composites with abundant heterogeneous interfaces have and exhibit excellent EMW absorption properties at a loading of 50 wt%in epoxy *** minimum reflection loss(RL)is−46.74 dB and the maximum effective absorption bandwidth is 5.28 ***,SnS/SnS_(2)/SnO_(2)/CF epoxy composite coatings exhibited long-term corrosion resistance on Q235 steel ***,this study provides an effective strategy for the design of high-efficiency EMW absorbing materials in complex and harsh environments.

关键词： Electrostatic spinning Component regulation Heterogeneous interfaces Electromagnetic wave absorption Corrosion protection