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Highly stretchable and reliable graphene oxide- reinforced liquid gating membranes for tunable gas/liquid transport

Microsystems & Nanoengineering 2020年第1期6卷 717-727页

作者： Wei Lv Zhizhi Sheng Yinglin Zhu Jing Liu Yi Lei Rongrong Zhang Xinyu Chen Xu Hou department of physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen University361005 XiamenChina State key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen University361005 XiamenChina Collaborative Innovation Center of Chemistry for Energy materials Xiamen University361005 XiamenChina

The ability of membrane technologies to dynamically tune the transport behavior for gases and liquids is critical for their *** various methods have been developed to improve membrane success,tradeoffs still exist among their properties,such as permeability,selectivity,fouling resistance,and stability,which can greatly affect the performance of *** elastomeric membrane designs can provide antifracture properties and flexibility;however,these designs still face certain challenges,such as low tensile strength and ***,researchers have not yet thoroughly developed membranes that can avoid fouling issues while realizing precise dynamic control over the transport *** this study,we show a versatile strategy for preparing graphene oxide-reinforced elastomeric liquid gating membranes that can finely modulate and dynamically tune the sorting of a wide range of gases and liquids under constant applied ***,the produced membranes exhibit antifouling properties and are adaptable to different length scales,pressures,and *** filling of graphene oxide in the thermoplastic polyurethane matrix enhances the composites through hydrogen *** and theoretical calculations are carried out to demonstrate the stability of our *** membrane exhibits good stretchability,recovery,and durability due to the elastic nature of the solid matrix and dynamic nature of the gating *** control over the transport of gases and liquids is achieved through our optimized interfacial design and controllable pore deformation,which is induced by mechanical *** strategy will create new opportunities for many applications,such as gas-involved chemical reactions,multiphase separation,microfluidics,multiphase microreactors,and particulate material synthesis.

关键词： transport fouling liquid

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Photochemical effect driven fluid behavior control in microscale pores and channels

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Chinese Chemical Letters 2022年第8期33卷 3650-3656页

作者： Shuli Wang Ruimin Zhou Yaqi Hou Miao Wang Xu Hou department of physics Research Institute for Biomimetics and Soft MatterFujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Institute of Artificial Intelligence Xiamen UniversityXiamen 361005China State key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of materials Xiamen UniversityXiamen 361005China Tan Kah Kee Innovation laboratory Xiamen 361102China

Manipulating the fluid transport in the microscale pores and channels is playing a paramount role in the realization of the versatile functions of *** recent years,using light to control the fluid behavior in the microchannels/pores has attracted many researchers'attention due to the advantages of light such as non-contact stimulation,tunable excitation,high spatial and temporal *** efforts,great achievements and progresses have been achieved for photochemical effect driven microscale flow control,including fluid pumping,flow rate control,and fluid mixing,*** this review,we discuss the responsive mechanisms of photochemical effect driven fluid behavior control at the *** also give a comprehensive review on the latest research progresses in photochemical effect controlled microfluid ***,prospective opportunities for the future development of light control of microscale flow are provided to attract scientific interest for the fast development and applications of various microchannel/pore systems.

关键词： Photochemical effect Fluid behavior Microscale pore Microchannel Microfluidics

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Front and Back contact engineering for high-efficient and low-cost hydrothermal derived Sb_(2)(S, Se)_(3) solar cells by using FTO/SnO_(2) and carbon

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Journal of materials Science & Technology 2020年第23期58卷 130-137页

作者： Liquan Yao Limei Lin Hui Liu Fengying Wu Jianmin Li Shuiyuan Chen Zhigao Huang Guilin Chen fujian provincial key laboratory of Quantum Manipulation and New Energy materials College of Physics and EnergyFujian Normal UniversityFuzhou350117China fujian provincial Engineering Technology research Center of Solar Energy Conversion and Energy Storage Fuzhou350117China fujian provincial Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices Xiamen361005China department of physics The Chinese University of Hong KongShatinHong Kong

Antimony chalcogenide Sb_(2)(S, Se)_(3) is attracting a lot of attention as photovoltaic absorber owing to its rewarding photoelectric properties, low toxicity, and earth abundance. However, its device efficiency is still limited by the absorber material quality and device interface recombination. In this work, a fluorinedoped tin oxide(FTO) substrate with ultra-thin SnO_(2) layer and a low-cost stabilized carbon paste are introduced as a front and back contact layer respectively in Sb_(2)(S, Se)_(3) based planar solar cells. Over 5.2% efficiency is demonstrated in the structure of FTO/SnO_(2)/Cd S/Sb_(2)(S, Se)_3/Carbon/Ag, where the Sb_(2)(S, Se)_(3) is prepared by hydrothermal technique. The complementary device physics characterizations reveal that the interfacial recombination between TCO and Cd S is significantly suppressed by the introduction of ultra-thin SnO_(2) layer, which is profited from the leakage protection and bandgap offset engineering by its high resistivity and suitable conduction band minimum. Meanwhile, the successful adoption of the lowcost stabilized carbon as a back contact here shows an enormous potential to replace the conventional organic hole transport materials and noble metal. We hope this work can provide positive guidance to optimize Sb_(2)(S, Se)_(3) based planar solar cells in the future.

关键词： Sb_(2)(S Se)_(3) Contact engineering Recombination Solar cells

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Micro-nano structured VNb_(9)O_(25)anode with superior electronic conductivity for high-rate and long-life lithium storage

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Journal of materials Science & Technology 2021年第24期83卷 66-74页

作者： Mingxing Liang Yongcong Huang Yuda Lin Guisheng Liang Cihui Huang Lan Chen Jiaxin Li Qian Feng Chunfu Lin Zhigao Huang College of physics and Energy Fujian Normal UniversityFujian Provincial Solar Energy Conversion and Energy Storage Engineering Technology Research CenterFuzhou 350117China Institute of materials for Energy and Environment School of Materials Science and EngineeringQingdao UniversityQingdao 266071China fujian provincial key laboratory of Quantum Manipulation and New Energy materials Fuzhou 350117China fujian provincial Collaborative Innovation Center for Advanced High-Field Superconducting materials and Engineering Fuzhou 350117China

The oxygen vacancies and micro-nano structure can optimize the electron/Li+migration kinetics in anode materials for lithium batteries(LIBs).Here,porous micro-nano structured VNb_(9)O_(25)composites with rich oxygen vacancies were reasonably prepared via a facile solvothermal method combined with annealing treatment at 800℃for 30 h(VNb_(9)O_(25)-30 h).This micro-nano structure can enhance the contact of active material/electrolyte,and shorten the Li+diffusion *** introduction of oxygen vacancies can further boosts the intrinsic conductivity of VNb_(9)O_(25)-30 h for achieving excellent LIB *** as-prepared VNb_(9)O_(25)-30 h anode showed advanced rate capability with reversible capacity of 122.2 m A h g^(-1)at 4 A g^(-1),and delivered excellent capacity retention of~100%after 2000 ***,VNb_(9)O_(25)-30 h provides unexpected long-cycle life(i.e.,reversible capacity of 165.7 m A h g^(-1)at 1 A g^(-1)with a high capacity retention of 85.6%even after 8000 cycles).Additionally,coupled with the Li Fe PO4 cathode,the Li Fe PO4//VNb_(9)O_(25)-30 h full cell delivers superior LIB properties with high reversible capacities of 91.6 m A h g^(-1)at 5 C for 1000 ***,such reasonable construction method can assist in other high-performance niobium-based oxides in LIBs.

关键词： Lithium-ion batteries VNb_(9)O_(25)anode Micro-nano structure Oxygen vacancies Electrochemical performance

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Cell osteogenic bioactivity mediated precisely by varying scaled micro-pits on ordered micro/nano hierarchical structures of titanium

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Regenerative Biomaterials 2022年第1期9卷 597-611页

作者： Yanmei Zhang Xiankuan Wang Yaxian Li Jianhe Liang Pinliang Jiang Qiaoling Huang Yun Yang Hongping Duan Xiang Dong Gang Rui Changjian Lin State key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China research Institute for Biomimetics and soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Beijing Engineering laboratory of functional Medical materials and Devices Beijing Medical Implant Engineering Research CenterBeijing Naton Technology Group Co.LtdBeijingChina department of Orthopedics Surgery The First Affiliated Hospital of Xiamen UniversityXiamenFujian 361003China Tan Kah Kee Innovation laboratory XiamenFujian 361005China

Hierarchical surface structures with micro–nano scale play a crucial role in regulation of cell proliferation and osteogenic *** has been proven that cells are extremely sensitive to the nanoscaled structure and show multifarious *** a vital function of microstructure on osseointegration has been confirmed,the cell performances response to different microscaled structure is needed to be further dissected and in depth *** this work,the ordered micro–nano hierarchical structures with varying micro-scaled pits were precisely fabricated on titanium successfully by the combination of electrochemical,chemical etching and anodization as *** vitro systematical assessments indicated that the micro–nano multilevel structures on titanium exhibited excellent cells adhesion and spreading ability,as well as steerable proliferation and osteogenic differentiation *** is shown that smaller micro-pits and lower roughness of the hierarchical structures enabled faster cell *** cell growth was delayed on micro–nano titanium with relatively larger cell-match-size micro-pits and roughness,osteogenic-specific genes were significantly ***,the alkaline phosphatase activity,collagen secretion and extracellular matrix mineralization of MC3T3-E1 on multiscaled titanium were suppressed by a large margin after adding IWP-2(an inhibitor of Wnt/b-catenin signal pathway),indicating this pathway played a crucial part in cell osteogenic differentiation modulated by micro–nano structures.

关键词： electrochemical self-organizing etching varying micro-scaled pits osteogenic Wnt/b-catenin

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Strong anti-strain capacity of CoFeB/MgO interface on electronic structure and state coupling

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Chinese physics B 2018年第1期27卷 552-558页

作者：郭飞吴雅苹吴志明陈婷李恒张纯淼付明明卢奕宏康俊勇 Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices Fujian Provincial Key Laboratory of Semiconductors and ApplicationsDepartment of Physics Xiamen University

Electronic structure and spin-related state coupling at ferromagnetic material （FM）/MgO （FM = Fe, CoFe, CoFeB） interfaces under biaxial strain are evaluated using the first-principles calculations. The CoFeB/MgO interface, which is su- perior to the Fe/MgO and CoFe/MgO interfaces, can markedly maintain stable and effective coupling channels for majority- spin A1 state under large biaxial strain. Bonding interactions between Fe, Co, and B atoms and the electron transfer between Bloch states are responsible for the redistribution of the majority-spin A1 state, directly influencing the coupling effect for the strained interfaces. Layer-projected wave function of the majority-spin Al state suggests slower decay rate and more stable transport property in the CoFeB/MgO interface, which is expected to maintain a higher tunneling magnetoresistance （TMR） value under large biaxial strain. This work reveals the internal mechanism for the state coupling al strained FM/MgO interfaces. This study may provide some references to the design and manufacturing of magnetic tunnel .junctions with high tunneling magnetoresistance effect.

关键词： ferromagnet material/MgO interface biaxial strain state coupling first-principles calculation

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Luminescent characteristics of Tm^(3+)/Tb^(3+)/Eu^(3+) tri-doped Na_(5)Y_(9)F_(32) single crystals for white emission with high thermal stability

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Chinese physics B 2022年第12期31卷 544-549页

作者： Lizhi Fang Xiong Zhou Zhiwei Zhao Biao Zheng Haiping Xia Jun Wang Hongwei Song Baojiu Chen key laboratory of Photo-electronic materials Ningbo UniversityNingbo 315211China Taizhou Special Equipment Inspection and research Institute Taizhou 318000China fujian provincial key laboratory of functional Marine Sensing materials Center for Advanced Marine Sensing Materials and Smart SensorsMinjiang UniversityFuzhou 350108China State key laboratory on Integrated Optoelectronics College of Electronic Science and Engineering and College of PhysicsJilin UniversityChangchun 130012China department of physics Dalian Maritime UniversityDalian 116026China

By using an improved Bridgman method,0.3 mol%Tm^(3+)/0.6 mol%Tb^(3+)/y mol%Eu^(3+)(y=0,0.4,0.6,0.8)doped Na_(5)Y_(9)F_(32)single crystals were *** x-ray diffraction,excitation spectra,emission spectra and fluorescence decay curves were used to explore the crystal structure and optical performance of the obtained *** excited by 362 nm light,the cool white emission was realized by Na_(5)Y_(9)F_(32)single crystal triply-doped with 0.3 mol%Tm^(3+)/0.6 mol%Tb^(3+)/0.8 mol%Eu^(3+),in which the Commission Internationale de l’Eclairage(CIE)chromaticity coordinate was(0.2995,0.3298)and the correlated color temperature(CCT)was 6586 *** integrated normalized emission intensity of the tridoped single crystal at 448 K could keep 62%of that at 298 *** internal quantum yield(QY)was calculated to be~15.16%by integrating *** results suggested that the single crystals tri-doped with Tm^(3+),Tb^(3+)and Eu^(3+)ions have a promising potential application for white light-emitting diodes(w-LEDs).

关键词： Tm^(3+)/Tb^(3+)/Eu^(3+)triply-doped Na_(5)Y_(9)F_(32) white light emission energy transfer process thermal stability

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Designing artificial ion channels with strict K+/Na+ selectivity toward next-generation electric-eel-mimetic ionic power generation

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National Science Review 2023年第12期10卷 193-202页

作者： Jipeng Li Linhan Du Xian Kong Jianzhong Wu Diannan Lu Lei Jiang Wei Guo State key laboratory of Marine Resource Utilization in South China Sea School of Materials Science and Engineering Hainan University department of Chemical Engineering Tsinghua University South China Advanced Institute for soft Matter Science and Technology Guangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and Devices School of Emergent Soft MatterSouth China University of Technology department of Chemical and Environmental Engineering University of California research Institute for Frontier Science Beihang University Center for Quantum physics and Intelligent Sciences Department of Physics Capital Normal University

A biological potassium channel is> 1000 times more permeable to K+than to Na+and exhibits a giant permeation rate of ～108ions/*** is a great challenge to construct artificial potassium channels with such high sele ctivity and ion conduction ***,we unveil a long-overlo oked structural feature that underpins the ultra-high K+/Na+*** carrying out massive molecular dynamics simulation for ion transport through carbonyl-oxygen-modified bi-layer graphene nanopores,we find that the twisted carbonyl rings enable strict potassium selectivity with a dynamic K+/Na+selectivity ratio of 1295 and a K+conduction rate of 3.5 × 107ions/s,approaching those of the biological ***,atomic trajectories of K+permeation events suggest a dual-ion transport mode,*** like-charged potassium ions are successively captured by the nanopores in the graphene bi-layer and are interconnected by sharing one or two interlayer water *** dual-ion behavior allows rapid release of the exiting potassium ion via a soft knock-on mechanism,which has previously been found only in biological ion *** a proof-of-concept utilization of this discovery,we propose a novel way for ionic power generation by mixing KCl and NaCl solutions through the bi-layer graphene nanopores,termed potassium-permselectivity enabled osmotic power generation(PoPee-OP G).Theoretically,the biomimetic device achieves a very high power density of> 1000 W/m2with graphene sheets of <1% *** study provides a blueprint for artificial potassium channels and thus paves the way toward next-generation electric-eel-mimetic ionic power generation.

关键词： artificial ion channel bi-layer graphene dehydrated ion transport bio-inspired materials energy conversion

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Biphase-to-monophase structure evolution of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) toward ultradurable Na-ion batteries

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Carbon Energy 2024年第9期6卷 66-79页

作者： Mengting Liu Zhiwei Cheng Xu Zhu Haojie Dong Tianran Yan Liang Zhang Lu Zheng Hu-Rong Yao Xian-Zuo Wang Lianzheng Yu Bing Xiao Yao Xiao Peng-Fei Wang State key laboratory of Electrical Insulation and Power Equipment School of Electrical EngineeringCenter of Nanomaterials for Renewable EnergyXi'an Jiaotong UniversityXi'anShaanxiChina Jiangsu key laboratory of Advanced Negative Carbon Technologies Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhouJiangsuChina fujian provincial key laboratory of Quantum Manipulation and New Energy materials College of Physics and EnergyFujian Normal UniversityFuzhouFujianChina Wenzhou key laboratory of Sodium-Ion Batteries Institute for Carbon NeutralizationWenzhou University Technology InnovationWenzhouZhejiangChina

Layered composite oxide materials with O3/P2 biphasic crystallographic structure typically demonstrate a combination of high capacities of the O3 phase and high operation voltages of the P2 ***,their practical applications are seriously obstructed by difficulties in thermodynamic phase regulation,complicated electrochemical phase transition,and unsatisfactory cycling ***,we propose an efficient structural evolution strategy from biphase to monophase of Na_(0.766+x)Li_(x)Ni_(0.33-x)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) through Li+*** role of Li+substitution not only simplifies the unfavorable phase transition by altering the local coordination of transition metal(TM)cations but also stabilizes the cathode–electrolyte interphase to prevent the degradation of TM cations during battery *** a result,the thermodynamically robust O_(3)-Na_(0.826)Li_(0.06)Ni_(0.27)Mn_(0.5)Fe_(0.1)Ti_(0.07)O_(2) cathode delivers a high capacity of 139.4 mAh g^(-1) at 0.1 C and shows prolonged cycling life at high rates,with capacity retention of 81.6%at 5 C over 500 *** work establishes a solid relationship between the thermodynamic structure evolution and electrochemistry of layered cathode materials,contributing to the development of long-life sodium-ion batteries.

关键词： electrochemistry Li+substitution Na-ion batteries O_(3)phase phase transition

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Continuous water-water hydrogen bonding network across the rim of carbon nanotubes facilitating water transport for desalination

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Nano research 2021年第7期14卷 2171-2178页

作者： Yaqi Hou Miao Wang Xinyu Chen Xu Hou State key laboratory of Physical Chemistry of Solid Surfaces College of Chemistry and Chemical EngineeringXiamen UniversityXiamen 361005China College of materials Xiamen UniversityXiamen 361005China research Institute for Biomimetics and soft Matter Fujian Provincial Key Laboratory for Soft Functional Materials ResearchJiujiang Research InstituteCollege of Physical Science and TechnologyXiamen UniversityXiamen 361005China Collaborative Innovation Center of Chemistry for Energy materials Xiamen UniversityXiamen 361005China Tan Kah Kee Innovation laboratory Xiamen 361102China CAS key laboratory of Bio-inspired materials and Interfacial Sciences Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China

The development of membranes featuring carbon nanotubes(CNTs)have provided possibilities of next-generation solar desalination *** solar desalination,the microstructures and interactions between the filter membrane and seawater play a crucial role in desalination *** the mechanisms of water evaporation and ion rejection in confined pores or channels is necessary to optimize the desalting ***,using non-equilibrium molecular dynamics simulations,we found that continuous water-water hydrogen bonding network across the rims of CNTs is the key factor in facilitating water transport through *** the continuous hydrogen bonding network,the water flux is two times of that without the continuous hydrogen bonding *** CNT arrays,each CNT transports water molecules and rejects salt ions *** on these observations,using CNT arrays consisted with densely packed thin CNTs is the most advisable strategy for evaporation desalination,possessing high transport flux as well as maintaining high salt rejection.

关键词： carbon nanotubes hydrogen bonding network facilitated water transport salt rejection desalination

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