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

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

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Cyanophenol and benzyl phosphonic acid grafted electrodes for poly(butyl viologen) thin film-based electrochromic device

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Solar Energy Materials and Solar Cells 2024年 274卷

作者： Liu, Shu-Ming Silori, Gaurav Kumar Sakthivel, Mani Hsiao, Li-Yin Ho, Kuo-Chuan Institute of Polymer Science and Engineering National Taiwan University Taipei10617 Taiwan Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan

Viologens are considered among the most promising electrochromic materials for utilization in electrochromic devices (ECDs). In this regard, poly(butyl viologen) (PBV) has gained interest due to its stability, conductivity, and ease of synthesis, thus making it suitable for electrochromic applications. Regrettably, the poor adhesion of PBV thin film with substrates/electrodes deters the redox properties and long-term stability of PBV-based ECDs. To address this issue, herein, two types of surface-modified indium tin oxide (ITO) electrodes, grafted with 4-cyanophenol (P–CN-ITO) and benzyl phosphonic acid (BPO3-ITO), are introduced for the deployment in PBV-based ECDs. The optical contrast (ΔT, %) for substrate-modified P–CN and BPO3-based ECD was measured to be ∼57.0 and ∼59.5, respectively, which was remarkably higher (an improvement of ∼66 %) than that of ECD with bare ITO (∼34.3). Meanwhile, the coloration times (τc) of the P–CN, BPO3, and bare ITO-based ECD were registered to be ∼1.7, ∼2.0, and ∼4.1 s, respectively, thus revealing the superiority of utilized functional groups over the unmodified substrate. The P–CN and BPO3-based ECD retained ∼70.2 % and ∼55.5 % of initial ΔT, respectively, after continuous switching of 10,000 cycles, thus showing high endurance and reversibility. The XPS results indicated the strong covalent bond formation between the utilized functional groups (P–CN and BPO3) and ITO, which delivered improved electrochemical, optical, and stability behavior when deployed in ECDs. Our study suggests that P–CN and BPO3-based substrates can be promising for deployment as terminal electrodes in viologen-based ECDs for improved overall performance. © 2024

关键词： Electrochromic devices

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A novel core-shell rifampicin/isoniazid electrospun nanofiber membrane for long time drug dissolution

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Engineered Regeneration 2022年第1期3卷 73-79页

作者： Chenxi Li Yueqi Liu Ming Wei Jun Liu Xiaomin Yu Ping Hu Yong Liu Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing 100029China College of Mechanical and Electric Engineering Beijing University of Chemical TechnologyBeijing 100029China Department of Infectious Disease and Clinical Microbiology Beijing Chaoyang HospitalCapital Medical UniversityBeijing 100020China Department of Chemical Engineering Tsinghua UniversityBeijing 100084China

Rifampicin(RIF)and isoniazid(INH)are commonly applied jointly in clinical to improve the treatment efficacy of *** to the metabolism of the kidneys,most of RIF and INH would be excreted by human bodies after reaching a high drug concentration,which causes serious waste of drugs and does harm to our *** this study,polylactic acid(PLLA)was chosen as the carrier to prepare core-shell drug-loaded nanofibers with RIF in the shell and INH in the core by coaxial *** results showed that the average diameter of the core-shell drug-loaded fibers with an obvious core-shell structure was about 650 *** of RIF and INH in the fibers became amorphous;the rest maintained *** combination of PLLA and RIF made the fibers obvious hydrophobic and exhibited a slowly phased sustained-dissolve property during in vitro dissolution *** in vitro antibacterial experiments confirmed that the core-shell drug-loaded nanofibers had a favorite inhibitory effect on Staphylococcus aureus,which endowed practical medical value to the *** core-shell drug-loaded nanofibers effectively separated RIF and INH,preventing the degradation of RIF caused by the direct contact of the two *** slow-dissolve characteristics can maintain a relatively stable drug concentration and avoid the damage to the human body caused by the quick dissolve and rapid metabolism of *** combination with coaxial electrospinning fills the gap in the core-shell system with two drugs and has great significance in the future.

关键词： Dual drug delivery Core-shell structure Coaxial electrospinning Phased sustained-dissolve Staphylococcus aureus

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Inherently radiopaque polyurethane beads as potential multifunctional embolic agent in hepatocellular carcinoma therapy

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Journal of Materials science & Technology 2021年第4期63卷 106-114页

作者： Wenhuan Wang Lin Sang Yiping Zhao Zhiyong Wei Min Qi Yang Li State Key Laboratory of Fine Chemicals Liaoning Key Laboratory of Polymer Science and EngineeringDepartment of Polymer Science and EngineeringSchool of Chemical EngineeringDalian University of TechnologyDalian 116024China School of Automotive Engineering Dalian University of TechnologyDalian 116024China Department of Radiology Second Affiliated Hospital of Dalian Medical UniversityDalian 116027China School of Material Science and Engineering Dalian University of TechnologyDalian 116024China

The aim of the current study is to report an inherently radiopaque drug-eluted beads(DEBs)as promising embolic materials for TACE ***,the synthesized radiopaque iodinated polycaprolactonepolyurethanes(I-PCLUs)are synthesized by chain-extending method by using 4,4-′isopropylidinedi-(2,6-diiodophenol)(IBPA)as the radiopacifying ***,doxorubicin(Dox)is introduced as a chemotherapeutic agent into I-PCLU beads via a double emulsification(W/O/W)*** drug loading and controlled release behavior of two ratios of I-PCLU/Dox are found to be dependent upon the internal porous microstructure,and the radiopacity is well-retained after four weeks drug ***,the I-PCLU/Dox beads exhibit positive in vitro anti-tumor *** in vivo intramuscular implantation and liver embolization results demonstrate that I-PCLU beads have good histocompatibility,occlusion effect and X-ray ***,the drug-loaded I-PCLU beads are performed into a VX2 rabbit hepatocellular carcinoma(HCC)model using a micro-catheter,form embolization of hepatic arteries and inhibit the tumor growth after one week ***,this polymeric system provides a potential radiopaque chemoembolization candidate for HCC and other cancer therapies,which could bring opportunities to the next generation of multifunctional embolic agents.

关键词： embolic hepatocellular rabbit

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Flexible,anti-damage,and non-contact sensing electronic skin implanted with MWCNT to block public pathogens contact infection

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Nano Research 2022年第3期15卷 2616-2625页

作者： Duan-Chao Wang Hou-Yong Yu Lurong Jiang Dongming Qi Xinxing Zhang Lumin Chen Wentao Lv Weiqiang Xu Kam Chiu Tam National Engineering Lab for Textile Fiber Materials&Processing Technology College of Textile Science and EngineeringZhejiang Sci-Tech UniversityHangzhou 310018China College of Information Science and Technology Zhejiang Sci-Tech UniversityHangzhou 310018China State Key Laboratory of Polymer Materials Engineering Polymer Research Institute of Sichuan University Chengdu 610065China Department of Chemical Engineering Waterloo Institute for NanotechnologyUniversity of Waterloo200 University Avenue WestWaterlooOntario N2L 3G1Canada

If a person comes into contact with pathogens on public facilities,there is a threat of contact(skin/wound)*** urgently,there are also reports about COVID-19 coronavirus contact infection,which once again reminds that contact infection is a very easily overlooked disease exposure ***,we propose an innovative implantation strategy to fabricate a multi-walled carbon nanotube/polyvinyl alcohol(MWCNT/PVA,MCP)interpenetrating interface to achieve flexibility,anti-damage,and non-contact sensing electronic skin(E-skin).Interestingly,the MCP E-skin had a fascinating non-contact sensing function,which can respond to the finger approaching 0−20 mm through the spatial weak *** non-contact sensing can be applied urgently to human–machine interactions in public facilities to block *** scratches of the fruit knife did not damage the MCP E-skin,and can resist chemical corrosion after hydrophobic *** addition,the MCP E-skin was developed to real-time monitor the respiratory and cough for exercise detection and disease ***,the MCP E-skin has great potential for emergency applications in times of infectious disease pandemics.

关键词： prevent contact infection anti-damage sensors non-contact sensing respiratory sensing human–machine interaction

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Reusable Hydrogen Storage Tank with Flange Design 10

Reusable Hydrogen Storage Tank with Flange Design

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10th International Conference on Applied System Innovation, ICASI 2024

作者： Li, Yun-Qi Chen, Hsuan-Jung Yang, Hsi-Wen Chen, Chih-Yuan Chang, Shao-Fu Chen, Ssu-Ying Chen, Chien-Chon College of Engineering and Science Ph.D. Program in Materials and Chemical Engineering National United University Miaoli Taiwan Michigan State University Department of Chemistry MI48824 United States National United University Department of Materials Engineering Miaoli Taiwan Graduate Institute of Intellectual Property National Taipei University of Technology Taiwan National United University Department of Energy Engineering Miaoli Taiwan

ISBN: (纸本)9798350394924

For how to store and transport hydrogen, the first thought is to store hydrogen directly in the cylinder. However, this method is not desirable, because generally at least 700 atm high pressure, the hydrogen contained in the cylinder to be useful. Therefore it is very unsafe at such high pressures. In This paper, we design and production of a new generation of solid-state hydrogen storage and discharge container. The goal of 'development of solid-state hydrogen storage technology' is to break through the bottlenecks of hydrogen storage technology safety, hydrogen storage density, high-efficiency hydrogen absorption and release, transportation safety, and engineering practice. © 2024 IEEE.

关键词： Aluminum

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Sonication labile PEG-based hydrogel system for biological component suspension and subsequent degradation

RSC Applied Polymers

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RSC Applied polymers 2024年第6期2卷 1147-1156页

作者： Arguien, Meagan N. Kamps, Joshua T. Muth, Sarah A. Trujillo-Lemon, Marianela Bowman, Christopher N. Materials Science & Engineering Program University of Colorado Boulder 80309 CO United States Department of Chemistry University of Colorado Boulder 80309 CO United States Department of Molecular Cellular & Developmental Biology University of Colorado Boulder 80309 CO United States Department of Chemical and Biological Engineering University of Colorado Boulder 80309 CO United States

This work synthesizes poly(ethylene glycol) (PEG) macromers that incorporate a phthalaldehyde moiety located at crosslink junctions. This location facilitates the severing of the polymer network when bond scission of the phthalaldehyde unit occurs with mechanical stimulation. As these networks degrade, the mechanical properties are analyzed to better understand how sonication driven degradation affects a polymer network - specifically looking at the degradation profile in hydrogel systems through the mass loss and storage modulus profiles. Comparison of hydrogels containing phthalaldehyde units with hydrogels that do not have the mechanophore pre- and post-mechanical stimulation provides evidence that the incorporation of the mechanophore at these crosslink junctions reduces the storage modulus by a factor of ten and results in greater than 90% decrease of the gel mass after 15 minutes of probe sonication, leading to breaking the network into soluble daughter fragments. The network degradation conditions of these hydrogels are shown to be compatible with biological component suspension and release for applications such as localized payload release. © 2024 RSC.

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Electrospinning-Based All-Fiber TENGs for Wearable Energy Harvester

Electrospinning-Based All-Fiber TENGs for Wearable Energy Ha...

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2024 International Conference on the Challenges, Opportunities, Innovations and Applications in Electronic Textiles, E-Textiles 2024

作者： Li, Yuanlong Yang, Weifeng Wang, Hongzhi Menon, Carlo ETH Zürich Biomedical and Mobile Health Technology Laboratory Department of Health Science and Technology Zürich Switzerland State Key Laboratory for Modification of Chemical Fibers and Polymer Materials College of Materials Science and Engineering Donghua University Shanghai China

ISBN: (纸本)9783000804298

Developing textile-based electronics with good wearability is a potential future development direction. Although, the current state-of-the-art textile-based electronics show unique advantages in the field of electronic textiles (e-textile), further progress is required in realizing e-textile due to the arduous challenge of optimally combining electrical performance and textile performance. Here, we report a fully fiber-based energy-harvesting electronics textile with good electrical and mechanical properties. The porous structure of the textile obtained by electrospinning technology makes it breathable and comfortable. The output peak-to-peak voltage can reach 150 volts and can power some small electronic devices. In applications, small screens can be illuminated by integrating energy harvesters into clothing. Therefore, it is an suitable e-textile energy harvester option for future battery-free electronics. © 2024 Fraunhofer IZM.

关键词： Smart textiles

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Ni Flower/MXene-Melamine Foam Derived 3D Magnetic/Conductive Networks for Ultra-Efficient Microwave Absorption and Infrared Stealth

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Nano-Micro Letters 2022年第4期14卷 142-157页

作者： Haoran Cheng Yamin Pan Xin Wang Chuntai Liu Changyu Shen Dirk W.Schubert Zhanhu Guo Xianhu Liu Key Laboratory of Advanced Material Processing&Mold(Ministry of Education) National Engineering Research Center for Advanced Polymer Processing TechnologyCollege of Materials Science and EngineeringZhengzhou UniversityZhengzhou 450002People’s Republic of China Institute of Polymer Materials Friedrich-Alexander-University Erlangen-NurembergMartensstr.791058 ErlangenGermany Integrated Composites Laboratory(ICL) Department of Chemical&Biomolecular EngineeringUniversity of TennesseeKnoxvilleTN 37996USA

The development of multifunctional and efficient electromagnetic wave absorbing materials is a challenging research ***,the magnetized Ni flower/MXene hybrids are successfully assembled on the surface of melamine foam(MF)through electrostatic self-assembly and dip-coating adsorption process,realizing the integration of microwave absorption,infrared stealth,and flame ***,the Ni/MXene-MF achieves a minimum reflection loss(RLmin)of−62.7 dB with a corresponding effective absorption bandwidth(EAB)of 6.24 GHz at 2 mm and an EAB of 6.88 GHz at 1.8 *** electromagnetic wave absorption is attributed to the three-dimensional magnetic/conductive networks,which provided excellent impedance matching,dielectric loss,magnetic loss,interface polarization,and multiple *** addition,the Ni/MXene-MF endows low density,excellent heat insulation,infrared stealth,and flame-retardant *** work provided a new development strategy for the design of multifunctional and efficient electromagnetic wave absorbing materials.

关键词： Ni-MXene/Melamine foam Microwave absorption Heat insulation Infrared stealth Flame-retardant

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Conductive Framework-Stabilized Zn-Metal Anodes for High-Performance Zn-Ion Batteries and Capacitors

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Energy Material Advances 2023年第1期4卷 272-280页

作者： Zhe Gong Zhuo Li Pengfei Wang Kai Jiang Zhaowen Bai Kai Zhu Jun Yan Ke Ye Guiling Wang Dianxue Cao Guohua Chen Key Laboratory of Superlight Materials and Surface Technology of Ministry of Education College of Materials Science and Chemical EngineeringHarbin Engineering UniversityHarbin 150001P.R.China Key Laboratory of Polymer and Catalyst Synthesis Technology of Liaoning Province School of Environmental and Chemical EngineeringShenyang University of TechnologyShenyang 110870P.R.China Department of Mechanical Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong Kong SARP.R.China School of Energy and Environment City University of Hong KongHong Kong 999077P.R.China

Aqueous zinc(Zn)-based energy storage devices possess promising applications for large-scale energy storage systems due to the advantage of high safety,low price,and ***,their development is restricted by dendrite growth and hydrogen evolution issues from the Zn-metal ***,a facile stress-pressing method is reported for constructing a grid zinc anode(GZn)with a conductive *** highly conductive copper(Cu)-mesh framework reduces electrode hydrogen evolution and increases electrode ***,the in situ-formed Cu-Zn nano-alloy stabilizes the Zn deposition *** a result,the GZn symmetrical cell presents a low overpotential of 49 mV after cycling for 1,200 h(0.2 mA∙cm^(-2)).In addition,GZn displays its potential application as a universal anode for Zn-ion capacitors and *** activated carbon||GZn Zn-ion capacitor delivers a stable cycling performance after 10,000 cycles at 5 A∙g^(−1) and MnO2||GZn Zn-ion batteries exhibit satisfactory cycle stability and excellent rate *** demonstrates that GZn appears to be a promising universal anode for Zn-ion capacitors and batteries.

关键词： cycling electrode conductive

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