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Nano Research 2025年第1期18卷 208-216页

作者： Wenjie Wu haoyang Zhou Ying Liu Yifei Pan Qingqing Chen Yu Zhang Junjie Mao Wenjie Ma Ping Yu Beijing National Laboratory for Molecular Sciences Key Laboratory of Analytical Chemistry for Living BiosystemsInstitute of ChemistryChinese Academy of Sciences(CAS)Beijing 100190China College of Chemistry and Materials Science Anhui Normal UniversityWuhu 241002China University of Chinese Academy of Sciences Beijing 100049China

The electrochemical conversion of carbon dioxide(CO_(2))into chemical fuels represents a promising approach for addressing global carbon balance ***,this process is hindered by the kinetic limitations of anodic reactions,usually the oxygen evolution reaction,resulting in less efficient production of high value-added ***,we report an integrated electrocatalytic system that couples CO_(2)reduction reaction(CO_(2)RR)with urea oxidation reaction(UOR)using a bifunctional electrocatalyst with atomically dispersed dual-metal CuNi sites anchored on bamboo-like nitrogen-doped carbon nanotubes(CuNi-CNT),which were synthesized through a one-step pyrolysis *** bifunctional CuNi-CNT catalyst exhibits a near 100%CO Faraday efficiency for CO_(2)RR over a wide potential range and outstanding UOR performance with a negatively shifted potential of 210 mV at 10 mA·cm^(-2).In addition,we assemble a two-electrode electrolyzer using bifunctional CuNi-CNT-modified carbon fiber paper electrodes as both cathode and anode,capable of operating at a remarkably low cell voltage of 1.81 V at 10 mA·cm-2,significantly lower than conventional *** study provides a novel avenue to achieving an efficient carbon cycle with reduced electric power consumption.

关键词： electrochemical conversion bimetallic site catalyst bifunctional electrocatalyst carbon dioxide reduction urea oxidation

Global Regularity for Einstein-Klein-Gordon System with U(1)×R Isometry Group,I

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Chinese Annals of Mathematics,Series B 2020年第6期41卷 939-966页

作者： haoyang CHEN Yi ZHOU School of Mathematical Sciences Fudan UniversityShanghai 200433China

This is the first of the two papers devoted to the study of global regularity of the 3+1 dimensional Einstein-Klein-Gordon system with a U(1)×R isometry *** this first part,the authors reduce the Cauchy problem of the Einstein-Klein-Gordon system to a 2+1 dimensional ***,the authors will give energy estimates and construct the null coordinate system,under which the authors finally show that the first possible singularity can only occur at the axis.

关键词： Einstein-Klein Gordon system Cauchy problem Energy estimates Null coordinate First singularity

The role of diffusion in the nucleation of calcium carbonate

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Chinese Journal of Chemical Engineering 2022年第3期35卷 275-281页

作者： Xiangyu Dou haoyang Huang Yongsheng Han State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Chemical Engineering University of Chinese Academy of SciencesBeijing 100049China College of Chemistry and Molecular Engineering Peking UniversityBeijing 100871China

Nucleation widely exists in nature,from cloud formation to haze *** classical nucleation theory(CNT)was created to describe the nucleation process,but it fails to predict many experimental phenomena due to the short consideration of nanoscale phenomena and macroscale *** the attachment and detachment of monomers are considered in the developed model of nucleation,the diffusion of chemicals in the bulk is not valued as supersaturation in the nucleation process so *** we employ simulation and experimental approaches to investigate how the diffusion of ions affects the nucleation of calcium *** diffusion of ions is regulated by the viscosity of solvents and the sonication imposed on the *** is found that the nucleation rates increased exponentially with the diffusion coefficient of ions,which is beyond the prediction of *** abnormal finding might be ascribed to the involvement of cluster aggregation in the nucleation of calcium *** study highlights the significance of chemical diffusion in the nucleation process,which may help to revise the nucleation theory and develop solutions for the rational synthesis of materials,as well as for the control of air pollution.

关键词： Calcium carbonate Nucleation Simulation Diffusion Dynamics

Stability Mechanism of Laser-induced Fluorinated Super-hydrophobic Coating in Alkaline Solution

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Journal of Bionic Engineering 2022年第1期19卷 113-125页

作者： haoyang Li Yanling Tian Zhen Yang School of Mechanical Engineering Tianjin UniversityTianjin300350China Department of Mechanical and Aerospace Engineering The Hong Kong University of Science and TechnologyHong Kong999077China

Great attention has been focused on super-hydrophobic surfaces due to their fantastic *** chemicals are widely used to fabricate super-hydrophobic surfaces due to their convenience,simplicity,and high *** research has made extensively efforts on corrosion resistance of fluorinated super-hydrophobic surfaces in corrosive ***,rare papers focused on the underlying reasons of anticorrosion property and stability mechanism on the fluorinated super-hydrophobic coatings in alkaline ***,this work aims to reveal these mechanisms of fluorinated super-hydrophobic copper samples in strong alkaline solution(pH 13).Through the characterization of surface wettability and surface morphology,the laser-induced super-hydrophobic surface retained excellent stability after soaking in alkaline solution for 4 *** measurement of chemical compositions,the anticorrosion mechanism and stability mechanism of the fluorinated super-hydrophobic surface were ***,the hydroxyl ion(OH−)can further promote the hydrolysis reaction to improve the density and bonding strength of the fluoride ***,the electrochemical experiments(PDP and EIS tests)were conducted to validate the rationality of our proposed conclusions.

关键词： Fluoride Laser Super-hydrophobicity Alkaline corrosion Stability mechanism

A rescaling algorithm for multi-relaxation-time lattice Boltzmann method towards turbulent flows with complex configurations

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Applied Mathematics and Mechanics(English Edition) 2023年第9期44卷 1597-1612页

作者： haoyang LI Weijian LIU Yuhong DONG Shanghai Institute of Applied Mathematics and Mechanics School of Mechanics and Engineering ScienceShanghai UniversityShanghai 200444China Shanghai Key Laboratory of Mechanics in Energy Engineering Shanghai UniversityShanghai 200072China Shanghai Frontier Science Center of Mechanoinformatics Shanghai UniversityShanghai 200072China Shanghai Institute of Aircraft Mechanics and Control Shanghai 200092China

Understanding and modeling flows over porous layers are of great industrial *** accurately solve the turbulent multi-scale flows on complex configurations,a rescaling algorithm designed for turbulent flows with the Chapman-Enskog analysis is *** mesh layout and the detailed rescaling procedure are also *** numerical simulations(DNSs)for a turbulent channel flow and a porous walled turbulent channel flow are performed with the three-dimensional nineteen-velocity(D3Q19)multiple-relaxation-time(MRT)lattice Boltzmann method(LBM)to validate the accuracy,adaptability,and computational performance of the present rescaling *** results,which are consistent with the previous DNS studies based on the finite difference method and the LBM,demonstrate that the present method can maintain the continuity of the macro values across the grid interface and is able to adapt to complex *** reasonable time consumption of the rescaling procedure shows that the present method can accurately calculate various turbulent flows with multi-scale and complex configurations while maintaining high computational efficiency.

关键词： slattice Boltzmann method(LBM) direct numerical simulation(DNS) rescaling algorithm complex configuration

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新疆耕地多功能时空特征与权衡管理

水土保持研究 2025年第1期32卷 400-412页

作者：李奇峰王艺洁王浩阳张蚌蚌新疆农业大学经济管理学院西北农林科技大学经济管理学院

[目的]研究耕地“生产—生活—生态”功能间发展不平衡现状，提出分区权衡管理措施，对促进耕地可持续利用水平和推动区域耕地保护政策实施具有重要意义。[方法]利用新疆85个县市2005—2020年社会经济数据，构建耕地多功能评价体系，基... 详细信息

[目的]研究耕地“生产—生活—生态”功能间发展不平衡现状，提出分区权衡管理措施，对促进耕地可持续利用水平和推动区域耕地保护政策实施具有重要意义。[方法]利用新疆85个县市2005—2020年社会经济数据，构建耕地多功能评价体系，基于改进CRITIC-熵值法确定指标权重，运用综合指数模型、Spearman秩相关和双变量空间自相关模型对新疆耕地多功能进行评价，分析了耕地多功能的时空特征及其权衡协同关系，并将新疆划分为五大耕地利用功能区。[结果](1)耕地生产、生活、生态功能分别呈现“中间高，南北低”“北高南低”“三高夹两低”的空间分布特征。(2)耕地多功能间存在显著权衡关系，研究期内生产—生活功能权衡关系减弱，而生产—生态和生活—生态功能权衡关系增强。(3)基于以上结果，将耕地功能区划分为农业生产主导区(25.88%)、农业发展提升区(12.94%)、生态农业维持区(45.88%)、协同潜力提升区(5.88%)、城镇农业建设区(9.41%),优化新疆耕地利用格局。[结论]基于耕地功能分区提出差异化权衡管理措施，有利于保障粮食安全，对新疆耕地保护及多功能协同利用有一定借鉴意义。

关键词：耕地多功能三生空间权衡协同关系新疆

Artificial Intelligence-Enabled Mode-Locked Fiber Laser:A Review

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Nanomanufacturing and Metrology 2023年第4期6卷 95-108页

作者： Qiuying Ma haoyang Yu Shenzhen International Graduate School Tsinghua UniversityShenzhen 518055China School of Automation Central South UniversityChangsha 410083China

Owing to their compactness,robustness,low cost,high stability,and difraction-limited beam quality,mode-locked fber lasers play an indispensable role in micro/nanomanufacturing,precision metrology,laser spectroscopy,LiDAR,biomedi-cal imaging,optical communication,and soliton ***-locked fber lasers are a highly complex nonlinear optical system,and understanding the underlying physical mechanisms or the fexible manipulation of ultrafast laser output is *** traditional research paradigm often relies on known physical models,sophisticated numerical calculations,and exploratory experimental ***,when dealing with several complex issues,these traditional approaches often face limitations and struggles in fnding efective *** an emerging data-driven analysis and processing technology,artifcial intelligence(AI)has brought new insights into the development of mode-locked fber *** review highlights the areas where AI exhibits potential in accelerating the development of mode-locked fber lasers,including nonlinear dynamics prediction,ultrashort pulse characterization,inverse design,and automatic control of mode-locked fber ***,the challenges and potential future development are discussed.

关键词： Artifcial intelligence Mode-locked fber lasers Ultrafast optics Intelligent optimization Machine learning Deep learning

The structure-directing role of heterologous seeds in the synthesis of zeolite

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Green Energy & Environment 2024年第5期9卷 792-801页

作者： haoyang Zhang Binyu Wang Wenfu Yan State Key Laboratory of Inorganic Synthesis&Preparative Chemistry College of ChemistryJilin UniversityChangchun130012China

Zeolites have been widely used as catalysts,ion-exchangers,and adsorbents in chemical industries,detergent industry,steel industry,glass industry,ceramic industry,medical and healthﬁeld,and environmentalﬁeld,and recently applied in energy ***-assisted synthesis is a very effective approach in promoting the crystallization of *** some cases,the target zeolite cannot be formed in the absence of seed *** homologous seed-assisted synthesis,the structure of the seed zeolite is the same to that of the target zeolite,while the structure of the seed zeolite is different to that of the target zeolite in the heterologous seed-assisted *** this review,we brieﬂy summarized the heterologous seed-assisted syntheses of zeolites and analyzed the structure-directing effect of heterologous seeds and surveyed the“common composite building units(CBUs)hypothesis”and the“common secondary building units(SBUs)hypothesis”.However,both hypotheses cannot explain all observations on the heterologous seed-assisted ***,we proposed that the formation of the target zeolite does need nuclei with the structure of target zeolite and the formation of the nuclei of the target zeolite can be promoted by either the undissolved seed crystals with the same CBUs or SBUs to the target zeolite or by the facilitated appropriate distribution of the speciﬁc building units due to the presence of the heterologous seed that does not have any common CBUs and SBUs with the target zeolite.

关键词： Zeolite Heterologous seed Synthesis Structure-directing effect

Initiation characteristics of oblique detonation waves from a finite wedge under argon dilution

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Chinese Journal of Aeronautics 2021年第10期34卷 81-90页

作者： Ying GAO haoyang LI Gaoxiang XIANG Shunhao PENG Department of Teaching Quality Evaluation Yan'an UniversityYan'an 716000China School of Mechanics Civil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi'an 710129China

In this paper,the flow field characteristics of Oblique Detonation Waves(ODWs)induced by a finite wedge under argon dilution are studied by solving the Euler equations with a detailed chemical model of hydrogen and ***,the effects of the expansion waves,argon concentration,geometric parameters,and Mach number on the ODW are *** results show that the changes of these parameters may make the oblique detonation not be ***,the ODW initiation criterion of the finite wedge is summarized,as the characteristic length of the induction zone LCand the characteristic length of the oblique wedge LWmeet the condition LC/LW<1,the initiation of the ODW occurs;otherwise,it does not ***’s more,the Constant Volume Combustion(CVC)theory is applied to study the characteristic length of induction *** is found that CVC theory is more suitable for the“smooth transition”type of ODW flow field,the theoretical and numerical characteristic length in induction regions are in good *** work is of great significance for the design of oblique detonation engines for hypersonic vehicles.

关键词： Oblique detonation Finite wedge Argon dilution Initiation characteristics Numerical simulation

On the Combinatorics of Fibonacci-Like Non-renormalizable Maps

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Communications in Mathematics and Statistics 2020年第4期8卷 473-496页

作者： haoyang Ji Simin Li School of Mathematical Sciences University of Science and Technology of ChinaHefei 230026People’s Republic of China

In this paper,we extend Fibonacci unimodal map to a wider *** describe the combinatorial property of thesemaps by first return map and principal *** give the sufficient and necessary condition for the existence of this class ***,for maps with’bounded combinatorics’,we prove that they have no absolutely continuous invariant probability measure when the critical order ι is sufficiently large;for maps with reluctantly recurrent critical point,we prove they have absolutely continuous invariant probability measure whenever the critical order ι>1.

关键词： Fibonacci Principal nest Invariantmeasure Generalized renormalization