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Unique electromagnetic wave absorber for three-dimensional framework engineering with copious heterostructures

Journal of Materials science & technology 2024年第3期170卷 129-139页

作者： Liyuan Yu Qianqian Zhu Zhiqiang Guo Yuhang Cheng Zirui Jia Guanglei Wu Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China

In order to obtain high-performance electromagnetic wave absorbers,the adjustment of structure and components is *** on the above requirements,this system forms a three-dimensional frame structure consisting of MXene and transition metal oxides(TMOs)through efficient electrostatic *** three-dimensional network structure has rich heterojunction structures,which can cause a large amount of interface polarization and conduction losses in incident electromagnetic *** structures cause multiple reflections and scattering of electromagnetic waves,which is also an important reason for further increasing electromagnetic wave *** the doping ratio is 1:1,the system has the best impedance matching,the maximum effective absorption bandwidth(EAB max)can reach 5.12 GHz at 1.7 mm,and the minimum reflection loss(RL_(min))is-50.30 dB at 1.8 *** provides a reference for the subsequent formation of 2D-MXene materials into 3D materials.

关键词： MXene Three-dimensional frame Heterojunction structure Conduction loss Electromagnetic wave absorption

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Dual-ion pre-inserted Mo glycerate template for constructing NiMo-OS core–shell structure with boosting performance in zinc ions hybrid supercapacitors

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Nano Research 2023年第5期16卷 6922-6932页

作者： Shujing Chen Zhengpeng Xiang Zhenyu Xiao Kun-Peng Wang Qi Zhang Lei Wang State Key Laboratory Base of Eco-Chemical Engineering International Science and Technology Cooperation Base of Eco-chemical Engineering and Green ManufacturingCollege of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China

Zinc ion hybrid supercapacitors(ZHS)have received much attention due to the enhanced potential window range and high specific ***,the appropriate positive materials with high electrochemical performance are still a ***,NH_(4)^(+)and glycerate anions pre-inserted Mo glycerate(N-MoG)spheres are synthesized and serve as the template to form NH_(4)^(+)intercalated Ni_(3)S_(2)/Ni_(3)O_(2)(OH)_(4)@MoS_(2)core–shell nanoflower(N-NiMo-OS)in-situ grown on nickel foam(NF)(N-NiMo-OS/NF)by sulfurization *** with the product using traditional MoG as a template,N-NiMo-OS/NF inheriting a larger core structure from N-MoG delivers enhanced space for ions transport and volume expansion during the energy storage process,together with the synergistic effects of multi-components and the heterostructure,the as-prepared N-NiMo-OS/NF nanoflower exhibits excellent performance for the battery-type hybrid supercapacitors(BHS)and ZHS ***,the ZHS device delivers superior electrochemical performance to the BHS device,such as a higher specific capacity of 327.5 mAh·g^(−1)at 1 A·g^(−1),a preeminent energy density of 610.6 Wh·kg^(−1)at 1710 W·kg^(−1),long cycle *** in-situ Raman,ex-situ X-ray photoelectron spectroscopy(XPS),theoretical calculation demonstrate the extra Zn^(2+)insertion/extraction storage mechanism provides enhanced electrochemical performance for ZHS ***,the dual-ion pre-inserted strategy can be extended for other advanced electrode materials in energy storage fields.

关键词： NH_(4)^(+)and glycerate anions pre-inserted Mo glycerate(N-MoG)spheres NH_(4)^(+)intercalated Ni_(3)S_(2)/Ni_(3)O_(2)(OH)_(4)@MoS_(2)core–shell nanoflower(N-NiMo-OS)in-situ grown on nickel foam(NF)(N-NiMo-OS/NF)nanoflower battery-type hybrid supercapacitors zinc ions hybrid supercapacitors

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Fibrous MXene Aerogels with Tunable Pore of Contaminated Seawater

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Nano-Micro Letters 2023年第5期15卷 298-312页

作者： Fan Wu Siyu Qiang Xiao-Dong Zhu Wenling Jiao Lifang Liu Jianyong Yu Yi-Tao Liu Bin Ding Innovation Center for Textile Science and Technology College of TextilesDonghua UniversityShanghai 201620People’s Republic of China State Key Laboratory Base of Eco-Chemical Engineering College of Chemical EngineeringQingdao University of Science&TechnologyQingdao 266042People’s Republic of China

The seawater desalination based on solardriven interfacial evaporation has emerged as a promising technique to alleviate the global crisis on freshwater ***,achieving high desalination performance on actual,oil-contaminated seawater remains a critical challenge,because the transport channels and evaporation interfaces of the current solar evaporators are easily blocked by the oil slicks,resulting in undermined evaporation rate and conversion ***,we propose a facile strategy for fabricating a modularized solar evaporator based on flexible MXene aerogels with arbitrarily tunable,highly ordered cellular/lamellar pore structures for high-efficiency oil interception and *** core design is the creation of 1D fibrous MXenes with sufficiently large aspect ratios,whose superior flexibility and plentiful link forms lay the basis for controllable 3D assembly into more complicated pore *** cellular pore structure is responsible for effective contaminants rejection due to the multi-sieving effect achieved by the omnipresent,isotropic wall apertures together with underwater superhydrophobicity,while the lamellar pore structure is favorable for rapid evaporation due to the presence of continuous,large-area evaporation *** modularized solar evaporator delivers the best evaporation rate(1.48 kg m-2h-1)and conversion efficiency(92.08%)among all MXene-based desalination materials on oil-contaminated seawater.

关键词： Fibrous MXene aerogels Tunable pore structures Modularized solar evaporator Photothermal desalination

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Integrated Mini-Pillar Platform for Wireless Real-Time Cell Monitoring

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Research 2025年第1期2024卷 815-822页

作者： Yong Luo Yongchao Song Jing Wang Tailin Xu Xueji Zhang Synthetic Biology Research Center The Institute for Advanced Study (IAS)Shenzhen UniversityShenzhenGuangdong 518060P.R.China Beijing Key Laboratory for Bioengineering and Sensing Technology University of Science and Technology BeijingBeijing 100083P.R.China Research Center for Intelligent and Wearable Technology College of Textiles and ClothingState Key Laboratory of Bio-Fibers and Eco-TextilesQingdao UniversityQingdao 266071P.R.China School of Biomedical Engineering Shenzhen University Health Science CenterShenzhen UniversityShenzhenGuangdong 518060P.R.China

Cell culture as the cornerstone of biotechnology remains a labor-intensive process requiring continuous manual oversight and substantial time *** this work,we propose an integrated mini-pillar platform for in situ monitoring of multiple cellular metabolism processes,which achieves media anchoring and cell culture through an arrayed mini-pillar *** assembly of polyaniline(PANI)/dendritic gold-modified microelectrode biosensors exhibits high sensitivity(63.55 mV/pH)and excellent interference resistance,enabling real-time acquisition of biosensing *** successfully employed such integrated devices to real-time measuring pH variations in multiple cells and real-time monitoring of cell metabolism under drug interventions and to facilitate in situ assisted cultivation of 3-dimensional(3D)cell *** mini-pillar array-based cell culture platform exhibits excellent biosensing sensitivity and real-time monitoring capability,offering considerable potential for the advancement of biotechnology and medical drug development.

关键词： situ monitoring wireless real time cell monitoring cell culture media anchoring cellular metabolism processes integrated mini pillar platform

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Enhanced energy storage characteristics of the epoxy film with rigid phenyl-flexible etherified methylene chains

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Journal of Materials science & technology 2024年第16期183卷 12-22页

作者： Zhengdong Wang Mengli Li Botao Liu Ganqiu Yang Meng Luo Tong Zhang Ling Li Yonghong Cheng Zirui Jia Guanglei Wu School of Mechanical and Electrical Engineering Xi’an University of Architecture and TechnologyXi’an 710055China State Key Laboratory of Electrical Insulation and Power Equipment Xi’an Jiaotong UniversityXi’an 710049China Institute of Materials for Energy and Environment State Key Laboratory of Bio-Fibers and Eco-TextilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China

The introduction of highly polarized flexible segments into polymer molecular chains is an effective means to improve the dielectric constant and mechanical flexibility of polymers,which is important for improving the energy storage characteristics and applicability for the roll-to-roll process of metallic film ***,the introduction of flexible segments may adversely affect the heat resistance of polymer materials,which limits their application at high working *** this work,we have prepared a novel epoxy film with excellent comprehensive properties by introducing rigid phenyl and flexible etherified methylene side *** instance,the optimal epoxy film showed an energy storage density of 7.06 J cm^(-3)and 85%charge-discharge efficiency at room temperature and 420 kV mm^(-1).At 200 kV mm^(-1)and 110°C,a working condition for the application of the electric vehicle,the prepared film still showed an energy storage density of 1.5 J cm^(-3)and charge-discharge efficiency of 86%,which is 3 times that of BOPP *** work provides an idea for material designs of high-performance polymer film capacitors.

关键词： Epoxy film Amine hardeners Flexible side chain Thermodynamic properties Dielectric properties Energy storage performance

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Self-assembly tungsten selenide hybrid ternary MOF derived magnetic alloys via multi-polarization to boost microwave absorption

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Nano Research 2024年第3期17卷 1625-1635页

作者： Tianbao Zhao Tingting Zheng Di Lan Yan Zhang Zhengshuo Sun Chao Wang Zirui Jia Guanglei Wu Institute of Materials for Energy and Environment State Key Laboratory of Bio-fibers and Eco-textilesCollege of Materials Science and EngineeringQingdao UniversityQingdao 266071China School of Materials Science and Engineering Hubei University of Automotive TechnologyShiyan 442002China College of Chemistry and Chemical Engineering Qingdao UniversityQingdao 266071China

Confronted with severe electromagnetic wave pollution,the development of high-performance electromagnetic wave shielding or absorbing materials is an effective way to deal with ***,double transition metal alloys and transition metal dichalcogenides have attracted extensive attention in electromagnetic wave absorption,but few reports have studied the effects of these two materials on electromagnetic wave absorption at the same *** this work,cobalt-based alloy with magnetic loss mechanism was selected for composition *** ternary metal-organic framework was prepared by the one-step method,and then CoCu/C was prepared by high temperature ***,in the hydrothermal process,ultra-thin tungsten selenide nanosheets were coated on the surface of magnetic component,and the final polyhedral WSe_(2)/CoCu/C composites with multiple heterogeneous interfaces were *** synergistic effect of dielectric and magnetic components optimizes impedance matching and allows more electromagnetic waves to enter the ***,through the conduction loss of high conductivity graphitized carbon,interfacial polarization,and dipole polarization of heterogeneous interfaces between the components,the magnetic loss provided by CoCu alloy can work together to maximize the attenuation ability of electromagnetic ***,the minimum reflection loss(RLmin)value of the composite reaches-53.43 dB when the matched thickness is 2.1 mm,while the maximum effective absorption bandwidth(EABmax)reaches 6.0 GHz at a thin thickness of 1.8 *** work provides some support and reference for the design of novel electromagnetic wave absorbing materials via the dielectric/magnetic loss synergistic mechanism.

关键词： metal-organic framework dielectric/magnetic loss transition metal dichalcogenide electromagnetic wave absorption

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Solution-processed all-inorganic lead halide perovskite/layered double hydroxides superlattices

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science China Chemistry 2024年第9期67卷 2904-2910页

作者： Deyu Li Mingming Zhang Lulu Wei Shubing Tian Mingze Sun Kang Liu Jixiang Xu Lei Wang Jun Xing Key Laboratory of Eco-chemical Engineering Ministry of EducationCollege of Chemistry and Molecular EngineeringQingdao University of Science&TechnologyQingdao 266042China College of Sino-German Science and Technology Qingdao University of Science&TechnologyQingdao 266042China

Quantum wells and superlattices are key building blocks in the semiconductor industry,normally fabricated using epitaxial growth techniques,such as vapor phase epitaxy,metalorganic chemical vapor deposition and molecular beam ***,these complicated preparation processes,as well as their high cost,limit their extensive *** is essential to develop a simple solution process for building ***,we demonstrate an ion exchange strategy for synthesizing an allinorganic superlattice cesium lead bromide/layered double hydroxides(CsPbBr_3/LDH)in *** room temperature,the perovskite ions diffuse into the interlayer of LDH and assemble into layered perovskite with various *** with traditional organic-inorganic hybrid perovskite superlattice,the all-inorganic perovskite superlattice CsPbBr_(3)/LDH has weak quantum confinement,which exhibits narrow emission line-widths of 20 nm,high quantum yields of 55%,and radiative lifetimes of several *** findings offer a new route to synthesize novel perovskite superlattices and enrich the perovskite supercrystal platform for electronics,photonics and optoelectronics devices.

关键词： halide perovskite superlattice layered double hydroxides 2D

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Highly Durable and Fast Response Fabric Strain Sensor for Movement Monitoring Under Extreme Conditions

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Advanced Fiber Materials 2023年第1期5卷 223-234页

作者： Dongxing Lu Shiqin Liao Yao Chu Yibing Cai Qufu Wei Kunlin Chen Qingqing Wang Key Laboratory of Eco‑Textiles Ministry of EducationJiangnan UniversityWuxi 214122China Jiangxi Centre for Modern Apparel Engineering and Technology Jiangxi Institute of Fashion TechnologyNanchang 330201China

The exploration of smart electronic textiles is a common goal to improve people’s quality of ***,current smart e-textiles still face challenges such as being prone to failure under humid or cold conditions,lack of washing durability and chemical ***,a multifunctional strain sensor with a negative resistance change was developed based on the excellent elasticity of knitted fabrics.A reduced graphene oxide(rGO)conductive fabric was first obtained by electrostatic self-assembly of chitosan(CS).Then a strain sensor was prepared using a dip-coating process to adsorb nanoscale silica dioxide and poly(dimethylsiloxane)(PDMS).A broad working range of 60%,a fast response time(22 ms)and stable cycling durability over 4000 cycles were simultaneously achieved using the prepared ***,the sensor showed excel-lent superhydrophobicity,photothermal effects and UV protection,as graphene,silica and PDMS acted in *** multifunctional sensor could be mounted on human joints to perform tasks,including activity monitoring,medical rehabili-tation evaluation and gesture recognition,due to its superior electromechanical *** on its multiple superior properties,this sensor could be used as winter sportswear for athletes to track their actions without being impacted by water and as a warmer to ensure the wearer's comfort.

关键词： Multifunctional strain sensor Fabric surface modification Superhydrophobicity Photothermal Human movement detection

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Highly dispersed Pd nanoparticles in situ reduced and stabilized by nitrogen-alkali lignin-doped phenolic nanospheres and their application in vanillin hydrodeoxygenation

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Frontiers of Chemical science and Engineering 2024年第11期18卷 205-216页

作者： Xue Gu Yu Qin Jiahui Wei Bing Yuan Fengli Yu Liantao Xin Congxia Xie Shitao Yu State Key Laboratory Base of Eco-chemical Engineering College of Chemistry and Molecular EngineeringCollege of Chemical EngineeringQingdao University of Science and TechnologyQingdao 266042China

Herein,we introduced a nitrogen-alkali lignin-doped phenolic resin(N@AL_(n)PR)to produce palladium nanoparticles through an in situ reduction of palladium in an aqueous phase,without the need for additional reagents or a reducing *** phenolic resin nanospheres and the resulting palladium nanoparticles were extensively *** lignin created a highly conducive environment for nitrogen incorporation,dispersion,reduction,and stabilization of palladium,leading to a distinct catalytic performance of palladium nanoparticles in vanillin *** specific conditions of 1 mmol of vanillin,40 mg of catalyst,1 MPa H_(2),90°C,and 3 h,the optimized Pd/N@AL_(30)PR catalyst exhibited a nearly complete conversion of vanillin,98.9%selectivity toward p-creosol,and good stability for multiple ***,an environmentally friendly lignin-based catalyst was developed and used for the efficient hydrodeoxygenation conversion of lignin-based platform compounds.

关键词： alkali lignin phenolic nanosphere palladium nanoparticles hydrodeoxygenation vanillin

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Construction of 3D Shape-Changing Hydrogels via Light-Modulated Internal Stress Fields

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Energy & Environmental Materials 2023年第3期6卷 177-183页

作者： Zihan Xu Wenxin Fan Jinghua Duan Yanzhi Xia Zhihong Nie Kunyan Sui State Key Laboratory of Bio-Fibers and Eco-Textiles College of Materials Science and EngineeringShandong Collaborative Innovation Center of Marine Biobased Fibers and Ecological TextilesInstitute of Marine Bio-based MaterialsQingdao UniversityQingdao 266071China State Key Laboratory of Molecular Engineering of Polymers Department of Macromolecular ScienceFudan UniversityShanghai 200438China

The 3D shape-changing hydrogels are highly pursued for numerous ***,up to now,the construction of complex 3D shape-changing hydrogels remains a *** reported design strategies are mainly applied to fabricate 2D ones by introducing anisotropic microstructures into hydrogel sheets/***,we present a convenient photolithography strategy for constructing complex 3D shape-changing hydrogels by simultaneously modulating anisotropic microstructures and internal stress fields of gel *** the precursor solution containing ultraviolet(UV)absorber is irradiated by single-side UV light,the attenuated polymerization rate can cause the generation of asymmetric internal stress field in the resulting hydrogel *** the meantime,the directional diffusion of unpolymerized monomers allows for the formation of vertical gradient structure within ***,by applying different photomasks to modulate the local gradient structures and internal stress fields of the gel sheets,they can spontaneously transform into various complex 3D shape-changing hydrogels in the *** to the external stimuli,these 3D shape-changing hydrogels(e.g.,fighter plane,birdie,and multi-storey origami lattices)can deform in a novel 3D_(1)-to-3D_(2)-to-3D_(3)*** new design strategy contributes to the development of complex biomedical implants and soft robotics.

关键词： actuators anisotropic microstructure hydrogels internal stress shape transformation

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