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Frontiers of Chemical Science and Engineering 2023年第3期17卷 347-357页

作者： Quan Liu Xian Wang Yanan Guo Gongping Liu kai-ge zhou School of Chemical Engineering Analytical and Testing CenterAnhui University of Science and TechnologyHuainan 232001China State Key Laboratory of Materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNanjing 211816China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China

Reverse-selective membranes have attracted considerable interest for bioethanol ***,to date,the reverse-separation performance of ethanol/water is poor and the separation mechanism is ***-based membranes with tunable apertures and functional groups have shown substantial potential for use in molecular *** molecular dynamics simulations,for the first time,we reveal twoway selectivity in ethanol/water separation through functional graphene *** graphene(PG)exhibits reverse-selective behavior with higher ethanol fluxes than water,resulting from the preferential adsorption for *** flow mappings show that this ethanol-permselective process is initiated by the presence of ethanol-enriched and water-barren pores;this has not been reported in previous *** contrast,water molecules are preferred for hydroxylated graphene membranes because of the synergistic effects of molecular sieving and functional-group attraction.A simulation of the operando condition shows that the PG membrane with an aperture size of 3.8Åachieves good separation performance,with an ethanol/water separation factor of 34 and a flux value of 69.3 kg∙m‒2∙h‒1∙bar‒*** study provides new insights into the reverse-selective mechanism of porous graphene membranes and a new avenue for efficient biofuel production.

关键词： reverse separation graphene membrane ethanol/water separation molecular simulation

Recent progress on the smart membranes based on two-dimensional materials

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Chinese Chemical Letters 2022年第6期33卷 2832-2844页

作者： Xinyu Ai Yu-Hao Li Yi-Wei Li Tiantian Gao kai-ge zhou Institute of Molecular Plus Tianjin UniversityTianjin 300110China

Inspired by the biosystems,the artificial smart membrane to control the mass transport and molecular conversion has attracted increasing attention in the fields of membrane separation,desalination,nanofiltration,healthcare and environmental ***,the trade-off limitations in polymeric membranes greatly hinder the development of smart membranes with high permeability and ***,inspired by the unique physical/chemical properties of two-dimensional(2 D)materials,2 D materials-based smart membranes(2 DSMs)with the ability of intelligent regulation under different stimuli are highly suitable for membrane *** to the desired properties,the 2 DSMs with abundant functional groups can be designed through chemical modification to change the original properties and obtain tunable interlayer spacings under different external *** this review,we summarize the recent progress on artificial smart membranes based on 2 D *** design concept and fabrication strategy of 2 DSMs are first *** that,the developed 2 DSMs are introduced and classified by the type of responsive stimuli,including p H,magnetic field,electric field,light and ***,the 2 DSMs exhibiting unique performances as membrane separation,pressure sensors,blue energy harvesting,photoelectrochemical sensors and biomimetic devices are ***,the perspectives and challenges in the developments of 2 DSMs are discussed.

关键词： Smart membranes Two-dimensional material Tunable nanofluidics Membrane separation Blue energy harvesting Sensor

1D/2D composite subnanometer channels for ion transport:The role of confined water

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Nano Research 2023年第8期16卷 10913-10921页

作者： Yuhao Li Xiaorui Jin Xinhai Yan Xinyu Ai Xin Yang Zi-Jian Zheng Kun Huang Gaofeng Zhao Yongan Yang Meiling Wu kai-ge zhou Institute of Molecular Plus Department of ChemistryTianjin UniversityTianjin 300072China Haihe Laboratory of Sustainable Chemical Transformations Tianjin 300192China Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsHubei UniversityWuhan 430062China School of Chemical Engineering and Analytical Science National Graphene InstituteUniversity of ManchesterManchesterM139PLUK School of Civil Engineering Tianjin UniversityTianjin 300072China

As a mass transport media,water is an alternative of organic solvent applied in rechargeable batteries,due to its unique properties,including fast ionic migration,easy-processibility,economic/environmental friendliness,and flame ***,due to the high activity of water molecules in aqueous electrolytes,the corrosion of metal anode,side reactions,and inferior metal electrodeposition behavior leads to unstable cycling performance,poor Coulombic efficiency(CE),and early-staged failure of *** several attempts to regulate the activity of water,migration of ions is sacrificed,due to the limited methods to control the water ***,we developed a subnanoscale confinement strategy based on a nacre-like structure to modulate the activity of water in the solid *** tuning the ratio between the two-dimensional(2D)vermiculite and one-dimensional(1D)cellulose nanofibers(CNFs),the capillary size in the 1D/2D structure is altered to achieve a fast Zn^(2+)*** dielectric relaxation and molecular dynamics studies indicate that the enhanced Zn^(2+)conductivity is attributed to the fast water relaxation in the precisely defined 1D/2D *** advantage of the regulated activity of the confined water in 2D capillary,the composite vermiculite membrane can suppress the corrosion and side reactions between Zn electrode and water molecular,endowing a reversible Zn^(2+)stripping/plating behavior and a stable cycling performance for 900 *** on our confinement strategy to control the water states by 1D/2D structures,this work will open an avenue toward aqueous energy storage devices with excellent reversibility,high safety,and long-term stability.

关键词： ion transport subnanometer channels confined water aqueous electrolyte limited side reactions

防砂井挡砂介质堵塞规律实验及堵塞程度定量预测模型

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实验力学 2017年第3期32卷 351-360页

作者：董长银高凯歌周崇智勤功李怀文张清华中国石油大学(华东)石油工程学院山东青岛266580 中石化胜利油田分公司石油工程技术研究院山东东营257000 中国石油大港油田公司石油工程技术研究院天津300280

防砂井挡砂介质堵塞造成降产已成为困扰油气井防砂的关键问题。已开展的大量堵塞规律研究主要涉及机理和定性描述,尚未形成可用的堵塞程度定量预测方法。针对这一问题,本文在广泛应用的砾石充填防砂条件下,利用挡砂介质堵塞评价驱替实... 详细信息

防砂井挡砂介质堵塞造成降产已成为困扰油气井防砂的关键问题。已开展的大量堵塞规律研究主要涉及机理和定性描述,尚未形成可用的堵塞程度定量预测方法。针对这一问题,本文在广泛应用的砾石充填防砂条件下,利用挡砂介质堵塞评价驱替实验装置,进行了砾石层堵塞机理和规律实验,着重考察了砾石层堵塞渗透率比随驱替时间、砾砂中值比、流体流速、流体粘度、粘土含量、细质含量等生产条件的定量变化规律。根据实验数据,首先拟合砾石充填层堵塞渗透率比随时间的定量关系,引入综合堵塞系数和单项堵塞系数表征各生产条件对堵塞规律的影响,然后拟合了堵塞系数与各生产参数的经验关系,整合得到一个根据防砂参数和生产条件预测砾石充填层堵塞程度随时间变化规律的定量模型。结果表明,不同生产条件砾石层渗透率在投产早期下降较快,然后下降速度减缓并趋于基本不再变化,达到堵塞平衡状态。具体变化规律由防砂参数和生产条件控制。使用实际防砂井资料进行了模型应用案例分析,结果和规律与现场实际基本相符。该模型进一步修正后可用于防砂井动态产能预测与评价。

关键词：防砂砾石充填挡砂介质堵塞规律堵塞程度预测模型堵塞实验

Defects‑Rich Heterostructures Trigger Strong Polarization Coupling in Sulfides/Carbon Composites with Robust Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第1期17卷 528-547页

作者： Jiaolong Liu Siyu Zhang Dan Qu Xuejiao zhou Moxuan Yin Chenxuan Wang Xuelin Zhang Sichen Li Peijun Zhang Yuqi zhou kai Tao Mengyang Li Bing Wei Hongjing Wu Mengyang Li Bing Wei Hongjing Wu School of Physics Xidian UniversityXi’an 710071People’s Republic of China School of Advanced Materials and Nanotechnology State Key Discipline Laboratory of Wide Band Gap Semiconductor TechnologyXidian UniversityXi’an 710071People’s Republic of China School of Microelectronics Xidian UniversityXi’an 710071People’s Republic of China School of Telecommunication Engineering Xidian UniversityXi’an 710071People’s Republic of China MOE Key Laboratory of Material Physics and Chemistry Under Extraordinary School of Physical Science and TechnologyNorthwestern Polytechnical UniversityXi’an 710072People’s Republic of China The Ministry of Education Key Laboratory of Micro and Nano Systems forAerospace School of Mechanical EngineeringNorthwestern PolytechnicalUniversityXi’an 710072People’s Republic of China

Defects-rich heterointerfaces integrated with adjustable crystalline phases and atom vacancies,as well as veiled dielectric-responsive character,are instrumental in electromagnetic *** methods,however,constrain their delicate ***,an innovative alternative is proposed:carrageenan-assistant cations-regulated(CACR)strategy,which induces a series of sulfides nanoparticles rooted in situ on the surface of carbon *** unique configuration originates from strategic vacancy formation energy of sulfides and strong sulfides-carbon support interaction,benefiting the delicate construction of defects-rich heterostructures in M_(x)S_(y)/carbon composites(M-CAs).Impressively,these generated sulfur vacancies are firstly found to strengthen electron accumulation/consumption ability at heterointerfaces and,simultaneously,induct local asymmetry of electronic structure to evoke large dipole moment,ultimately leading to polarization coupling,i.e.,defect-type interfacial ***“Janus effect”(Janus effect means versatility,as in the Greek two-headed Janus)of interfacial sulfur vacancies is intuitively confirmed by both theoretical and experimental investigations for the first ***,the sulfur vacancies-rich heterostructured Co/Ni-CAs displays broad absorption bandwidth of 6.76 GHz at only 1.8 mm,compared to sulfur vacancies-free CAs without any dielectric *** defects-rich heterostructures,this one-pot CACR strategy may steer the design and development of advanced nanomaterials,boosting functionality across diverse application domains beyond electromagnetic response.

关键词： Defects-rich heterointerfaces Sulfides Polarization coupling Electromagnetic wave absorption

An Efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride Nanotubes

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Nano-Micro Letters 2025年第1期17卷 548-558页

作者： Ying Wang kai Zhang Liping Ding Liyun Wu Songfeng E Qian He Nanyang Wang Hui Zuo Zhengyang zhou Feng Ding Yue Hu Jin Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of Electronic Information and Artificial Intelligence Shaanxi University of Science&TechnologyXian 710000People’s Republic of China College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518000People’s Republic of China College of Chemical and Molecular Engineering Peking UniversityBeijing 100871People’s Republic of China

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their *** primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid *** this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B *** approach can be adopted to form various low-melting-point AM–Mg–B–O growth *** growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN *** findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

关键词： Boron nitride nanotubes Low-temperature Boron activation Density functional theory

Cursor momentum for fascination measurement

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Frontiers of Computer Science 2019年第2期13卷 396-412页

作者： Yu HONG kai WANG Weiyi ge Yingying QIU Guodong zhou College of Computer Scienee and Technology Soochow University Suzhou 215006 China Science and Technology on Information Systems Engineering Laboratory Nanjing 210007 China

We present a very different cause of search engine user behaviors ——fascination. It is generally identified as the initial effect of a product attribute on users' interest and purchase intentions. Considering the fact that in most cases the cursor is driven directly by a hand to move via a mouse (or touchpad), we use the cursor movement as the critical feature to analyze the personal reaction against the fascinating search results. This paper provides a deep insight into the goal-directed cursor movement that occurs within a remarkably short period of time (gether with other physical features, we built different fascination-based search result reranking systems. Our experiments showed that goal-directed cursor momentum is an effective feature in detecting fascination. In particular, they show feasibility in both the personalized and cross-media cases. In addition, we detail the advantages and disadvantages of both click-through rate and cursor momentum for re-ranking search results.

关键词： fascination measurement user-oriented search user behavior goal-directed cursor movement search result re-ranking

A novel interfacial thermodynamic model for predicting solubility of nanoparticles coated by stabilizers

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Chinese Journal of Chemical Engineering 2021年第3期34卷 103-112页

作者： kai ge Yuanhui Ji Xiaohua Lu Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research School of Chemistry and Chemical EngineeringSoutheast UniversityNanjing 211189China Key Laboratory of Material and Chemical Engineering Nanjing Tech UniversityNanjing 211816China

To improve the stability of nanoparticles in aqueous solution,polymer or surfactant,*** often added in solutions during the preparation process of nanoparticles,which can induce new interfaces that influence the solubility of *** this work,a novel interfacial thermodynamic model for describing the Gibbs energy of the nanoparticles coated by stabilizers was proposed to predict the solubility of *** the developed model,the activity coefficient of nano metal system was determined by Davies model and that of nano drug system by Perturbed-Chain Statistical Associating Fluid Theory(PC-SAFT).The Gibbs energy of the interface was established as a function of molecular parameters via the application for nano metal ***,the model was further used to predict the solubility of nano drugs itraconazole,fenofibrate,and *** was found that the Gibbs energy of the interface plays an important role especially when the radius of nano metal is less than 40 nm,and the developed model can predict the solubility of nano drug with high accuracy in comparison with the experimental data as well as predict the changing trend of solubility of nano drugs that increases as the particle size ***,the stabilization mechanism of stabilizers on nano drugs was studied which provided theoretical guidance for the selection of polymer or surfactant *** findings showed that the developed model can provide a reliable prediction of the solubility of nanoparticles and help to comprehend the stabilization mechanism of the stabilizers on nano drugs with different particle sizes,which is expected to provide important information for the design of nano drugs formulations.

关键词： Nanoparticles Solubility Gibbs energy of the interface PC-SAFT Molecular parameters

general Frequency-Intensity Cooperation in Stable Multimode Lasers

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Chinese Physics Letters 1999年第7期16卷 510-512页

作者： WANG kai-ge Department of Physics Beijing Normal UniversityBeijing 100875

In a homogeneously broadened laser models we find a simple and general law for stable multimode operatioiij which shows a nonlinear cooperative relationship between the frequencies and intensities of laser modes.

关键词： laser Lasers Intensity

Optimal control of a spacecraft with deployable solar arrays using particle swarm optimization algorithm

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Science China(Technological Sciences) 2011年第5期54卷 1107-1112页

作者： ge XinSheng SUN kai College of Mechanical & Electrical Engineering Beijing Information Science & Technology University Beijing 100192 China Department of Mechanics Peking University Beijing 100871 China

The optimal control problem of the multibody dynamics of a spacecraft in space, modeled as a central body with one-sided connected deployable solar arrays, is investigated. The dynamical equations of motion of the spacecraft with solar arrays are derived using the multibody dynamics method. The control of the attitude motion of a spacecraft system can be transformed into the motion planning problem of nonholonomic system when the initial angular momentum is zero. These are then used to investigate the motion planning of the spacecraft during solar arrays deployment via particle swarm optimization (PSO) and results are obtained with the optimal control input and the optimal trajectory. The results of numerical simulation show that this approach is effective for the control problem of the attitude of a spacecraft during the deployment process of its solar arrays.

关键词： multibody spacecraft attitude dynamics optimal control particle swarm optimization