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A study on porosity investigation of compacted bentonite in various densities by using micro-computed tomography images analysis

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Kerntechnik 2024年第3期89卷 327-339页

作者： Yang, Wudi Chen, Jui-Chi Li, Jing-Xing Yang, Song Shi, Yunfeng Chen, Chien-Jung Lu, Hui-Min Lu, Chien-Ping Tsai, Fang-Chang Lee, Chuan-Pin 12466 Xiamen University Xiamen361005 China Radioactive Waste Disposal Technology R&D Center 34881 National Tsing Hua Universi Hsinchu City Taiwan Department of Applied Chemistry National Chi Nan University Nantuo Taiwan School of Nuclear Sciences and Engineering 12394 East China University of Technology Nanchang330013 China Taiyuan030006 China Fundamental Science on Radioactive Geology and Technology Exploration Laboratory 12394 East China University of Technology Nanchang330013 China Department of Nuclear Medicine National Taiwan University Hospital College of Medicine National Taiwan University Taipei Taiwan Hubei Key Laboratory of Polymer Materials Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials School of Materials Science and Engineering 12563 Hubei University Wuhan430062 China

Compacting a material means applying pressure so that the material itself loses its internal pores. It improves the homogeneity of the material itself and increases its density. The pore structure of compacted clay is also an important factor that affects its mechanical properties, permeability and water absorption. In this study, MX-80 bentonite clay was first compacted into round cakes of different densities and then subjected to tomography image analysis technique using micro-computed tomography (micro-CT) at millimeter scale of accuracy for 1.0-2.0g/cm3 compacted clay (thickness of 0.3cm bentonite compacted clay). In this paper, we use the latest commercial specifically for scientific visualization, materials science, non-destructive testing, numerical simulation of chromatographic imaging and other functions of a powerful visualization of the image analyzing method. © 2024 Walter de Gruyter GmbH, Berlin/Boston.

关键词： Bentonite

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Design,Preparation and Properties of Bio-inspired Hierarchical Structure Yarns with Enhanced Thermal Insulation and Water Transfer Ability

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Chemical Research in Chinese Universities 2021年第3期37卷 558-564页

作者： JIA Yueran GONG Shun ZHANG Shu ZHAO Shikun QIN Zhen PAN Kai Beijing Key Laboratory of Advanced Functional Polymer Composites College of Materials Science and EngineeringBeijing University of Chemical TechnologyBeijing100029P.R.China College of Materials Science and Engineering Beijing University of Chemical TechnologyBeijing100029P.R.China

Encouraged by the porous and stable structure of cold-resist animals’hair or feather,bio-inspired hierarchical structure yarns combining polyacrylonitrile(PAN)nanofibers and polypropylene(PP)hollow microfibers have been developed by a modified conjugate electrospinning *** cross-linking has been built to increase fibers adhesion and construct interlayer support for nanofibrous *** nanofibers and hollow microfibers construct a stable porous structure with porosity of 62%,providing excellent thermal insulating ability[temperature difference(|ΔT|)between skin and yarn surface is 4.9℃]as well as good mechanical *** interestingly,the water transfer ability(infiltrate the yarn in 10 s)of synthetic fibers has been improved greatly by the combination of thin diameter nanofibers to the *** is believed that the research lays the foundation for bio-inspired engineering technology in the manufacture of thermal comfort.

关键词： Bio-inspired material Hierarchical structure yarn Thermal insulation Water transfer ability

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Insights into the Ti^(4+) doping in P2-type Na_(0.67)Ni_(0.33)Mn_(0.52)Ti_(0.15)O_(2) for enhanced performance of sodium-ion batteries

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Journal of Materials science & technology 2021年第15期74卷 230-236页

作者： Shi Tao Wei ZhouaDajun Wu Zhicheng Wang Bin Qian Wangsheng Chu Augusto Marcelli Li Song School of Electronic and Inform ation Engineering Jiangsu Laboratory of Advanced Functional MaterialsChangshu Institute of TechnologyChangshu 215500China National Synchrotron Radiation Laboratory University of Science and Technology of ChinaHefei 230029China INFN-Laboratori Nazionali di Frascati Via E.Fermi 40Frascati00044Italy

Due to the sodium abundance and availability,sodium-ion batteries(SIBs)have the potential to meet the worldwide growing demand of electrical energy storage.P2-type sodium transition-metal layer oxides with a high energy density are considered as the most promising cathode materials for *** present here a detailed study of the enhanced rate capability and cyclic stability of the Ti-doped Na_(0.67)Ni_(0.33)Mn_(0.67)O_(2)cathode *** combined analysis of ex-situ X-ray absorption fine structure(XAFS)spectroscopy,aberration-corrected high resolution transmission electron microscopy(AB-HRTEM)and X-ray diffraction(XRD)show that the strong Ti–O bond in the transition metal layers stabilizes the local structure,destroy the Na+-vacancy ordering and arrest the irreversible multiphase transformation that occurs during the intercalation/deintercalation ***,Na_(0.67)Ni_(0.33)Mn_(0.52)Ti_(0.15)O_(2)exhibits a reversible capacity of 89.6 mA h g^(-1)even at 5 C,an excellent cyclability with 88.78%capacity retention after 200 cycles at 0.5 *** study provides a better understanding in optimization of the design of high-energy cathode materials based on titanium doped layered oxides for SIBs.

关键词： P2-type layer oxides Ti doping X-ray absorption fine structure Phase transition Sodium-ion batteries

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Hot-electron emission-driven energy recycling in transparent plasmonic electrode for organic solar cells

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InfoMat 2022年第3期4卷 121-130页

作者： Jing-De Chen Ling Li Chao-Chao Qin Hao Ren Yan-Qing Li Qing-Dong Ou Jia-Jia Guo Shi-Jie Zou Feng-Ming Xie Xianjie Liu Jian-Xin Tang Jiangsu Key Laboratory for Carbon-Based Functional Materials&Devices Institute of Functional Nano&Soft Materials(FUNSOM)Soochow UniversitySuzhouJiangsuChina College of Physics and Materials Science Henan Normal UniversityXinxiangHenanChina School of Physics and Electronic Science Ministry of Education Nanophotonics&Advanced Instrument Engineering Research CenterEast China Normal UniversityShanghaiChina Department of Materials Science and Engineering Monash UniversityClaytonVictoriaAustralia Laboratory of Organic Electronics Department of Science and Technology(ITN)Linköping UniversityNorrköpingSweden Macao Institute of Materials Science and Engineering(MIMSE) Macao University of Science and TechnologyTaipaMacao SARChina

Plasmonic metal electrodes with subwavelength nanostructures are promising for enhancing light harvesting in ***,the nonradiative damping of surface plasmon polaritons(SPPs)during coupling with sunlight results in the conversion of the excited hot-electrons to heat,which limits the absorption of light and generation of ***,an energy recycling strategy driven by hotelectron emission for recycling the SPP energy trapped in the plasmonic electrodes is proposed.A transparent silver-based plasmonic metal electrode(A-PME)with a periodic hexagonal nanopore array is constructed,which is combined with a luminescent organic emitter for radiative recombination of the injected *** to the suppressed SPP energy loss via broadband hot-electron emission,the A-PME achieves an optimized optical transmission with an average transmittance of over 80%from 380 to 1200 ***,the indium-tin-oxide-free organic solar cells yield an enhanced light harvestingwith a power conversion efficiency of 16.1%.

关键词： energy recycling hot-electron emission organic solar cells plasmonic electrode surface plasmon polariton

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Transition-Metal-Doped Biphenylene for Enhanced Co Detection: A High-Throughput First-Principles Study

SSRN

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SSRN 2024年

作者： Zhang, Jiao Cui, Li-Ying Xie, Ying Wang, Zhe Zhang, Yan-Chang Yang, Lin Zheng, Bing School of Chemistry and Materials Science Heilongjiang University Harbin150080 China National Key Laboratory of Science and Technology on Advanced Composites in Special Environments Center for Composite Materials and Structures Harbin Institute of Technology Harbin150080 China

Our study examines the CO detection capabilities of pristine biphenylene (BP) and transition-metal-doped BP (M-BP), a novel two-dimensional nano-carbon material. Despite BP’s potential in toxic gas detection, its low CO adsorption energy (Eads) of 0.134 eV limits its application. Utilizing a combined strategy of high-throughput computational screening and DFT technique, we accurately identified the ground state configurations of CO-adsorbed M-BP (M = Sc, Ti, Fe, Co, Ni, and Zn) and confirmed M doping significantly boosts BP’s CO adsorption ability, with Eads values ranging from 2.809 to 8.206 eV. This improvement is supported by ab initio molecular dynamics simulations and ionic d-p bonding interactions observed in electron localization functions, densities of state (DOS), and bond population analysis. Additionally, CO adsorption induces notable DOS curve significantly changes in the metallic M-BP systems, validating the potential of M-BP systems as suitable materials for CO detection. Notably, Ti-BP2 and Zn-BP2 show notable work function shifts after CO adsorption (0.41 and 0.36 eV, respectively), outperforming pristine BP’s 0.30 eV shift. These shifts underscore the potential of Ti-BP2 and Zn-BP2 for work function-based CO sensors, marking them as promising materials for sensitive CO detection. © 2024, The Authors. All rights reserved.

关键词： Transition metals

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孔隙对MXene基纳米复合材料性能的影响（英文）

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science China Materials 2025年

作者：程雨杨娇匡小军程群峰 Guangxi Key Laboratory of Electrochemical and Magneto-Chemical Functional Materials College of Chemistry and Bioengineering Guilin University of Technology State Key Laboratory of Bioinspired Interfacial Materials Science School of Nano Science and Technology Suzhou Institute for Advanced ResearchUniversity of Science and Technology of China State Key Laboratory of Bioinspired Interfacial Materials Science School of Chemistry and Materials Science University of Science and Technology of China Institute of Energy Materials Science (IEMS) University of Shanghai for Science and Technology

二维过渡金属碳化物/氮化物(MXenes)具有优异的机械和电气性能,在电子、航空航天、能源等许多领域都有很好的应用前景.然而,由于应力传递效率低,将MXene纳米片组装成高性能宏观纳米复合材料仍然是一个挑战.我们发现在MXene纳米复合材料...

二维过渡金属碳化物/氮化物(MXenes)具有优异的机械和电气性能,在电子、航空航天、能源等许多领域都有很好的应用前景.然而,由于应力传递效率低,将MXene纳米片组装成高性能宏观纳米复合材料仍然是一个挑战.我们发现在MXene纳米复合材料中存在的孔隙通常会降低其宏观性能.在这篇综述中,我们系统性地讨论了孔隙对MXene纳米复合材料性能的影响,然后介绍消除孔隙的策略,包括协同界面相互作用、纳米片填充、制备工艺优化、纳米限域组装等.最后,我们展望了制备高性能MXene纳米复合材料面临的挑战和未来的发展方向.

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Combinatorial synthesis of redox-responsive cationic polypeptoids for intracellular protein delivery application

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science China Chemistry 2020年第11期63卷 1619-1625页

作者： Zhicheng Le Tong Xiao Zhijia Liu Xingliang Liu Hong Liu Lixin Liu Yongming Chen School of Materials Science and Engineering Key Laboratory of Polymeric Composite and Functional Materials of Ministry of EducationGD Research Center for Functional Biomaterials Engineering and TechnologySun Yat-sen UniversityGuangzhou 510275China

Biologics play an essential role in treating various indications from cancers to the metabolic diseases,while the current development of new classes of intracellular-acting protein drugs is still hindered because of high molecular mass and overall hydrophilicity of proteins creating extremely poor permeability across cell ***,there remains an unmet need to develop safe,potent approaches to augment intracellular protein delivery ***,we described a facile multicomponent reaction system for generating a small library of redox-responsive cationic polypeptoids with high *** co-assembly of optimized polymer with protein leads to the formation of compacted nanocomplexes with smaller size and high encapsulation efficiency,thus improving cellular internalization via the macropinocytosis and/or caveolae-mediated endocytosis *** endo-lysosomal escape,the nanocomplexes can be disassociated to efficiently release cargo proteins into the cytosol,owing to the intracellular glutathione(GSH)-triggered rapid cleavage of disulfide bonds in polymers *** a result,we screened a promising platform reagent for efficient cytosolic protein delivery application.

关键词： multicomponent reaction cationic polypeptoid redox-responsive intracellular delivery protein

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Hydrogels with Dynamically Controllable Mechanics and Biochemistry for 3D Cell Culture Platforms

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Chinese Journal of Polymer science 2022年第1期40卷 38-46页

作者： Hai-Yang Wu Lei Yang Jiang-Shan Tu Jie Wang Jin-Ge Li Hong-Ying Lv Xiao-Niu Yang State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China School of Applied Chemistry and Engineering University of Science and Technology of ChinaHefei 230026China Polymer Composite Engineering Laboratory Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun 130022China Huangpu Institute of Advanced Materials Changchun Institute of Applied ChemistryChinese Academy of SciencesGuangzhou 510530China

Many cell-matrix interaction studies have proved that dynamic changes in the extracellular matrix(ECM)are crucial to maintain cellular properties and ***,developing materials that can recapitulate the dynamic attributes of the ECM is highly desired for threedimensional(3 D)cell culture *** this end,we sought to develop a hydrogel system that would enable dynamic and reversible turning of its mechanical and biochemical properties,thus facilitating the control of cell culture to imitate the natural ***,a hydrogel with dynamic mechanics and a biochemistry based on an addition-fragmentation chain transfer(AFCT)reaction was ***-modified hyaluronic acid(HA)and allyl sulfide-modifiedε-poly-L-lysine(EPL)were synthesized to form hydrogels,which were non-swellable and *** reversible modulus of the hydrogel was first achieved through the AFCT reaction;the modulus can also be regulated stepwise by changing the dose of UVA *** patterning of fluorescent markers in the hydrogel was also ***,this dynamically controllable hydrogel has great potential as a 3 D cell culture platform for tissue engineering applications.

关键词： Hydrogel Addition-fragmentation chain transfer Dynamic mechanics Controllable biochemistry 3D cell culture platform

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Carrier mobility tuning of MoS_(2) by strain engineering in CVD growth process

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Nano Research 2021年第7期14卷 2314-2320页

作者： Yongfeng Chen Wenjie Deng Xiaoqing Chen Yi Wu Jianwei Shi Jingying Zheng Feihong Chu Beiyun Liu Boxing An Congya You Liying Jiao Xinfeng Liu Yongzhe Zhang College of Materials Science and Engineering Key Laboratory of Advanced Functional Materials of Education Ministry of ChinaBeijing Key Laboratory of Microstructure and Property of Advanced MaterialsBeijing University of TechnologyBeijing 100124China Key Laboratory of Organic Optoelectronics and Molecular Engineering of the Ministry of Education Department of ChemistryTsinghua UniversityBeijing 100084China CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in NanoscienceNational Center for Nanoscience and TechnologyBeijing 100190China

Strain engineering is proposed to be an effective technology to tune the properties of two-dimensional(2D)transition metal dichalcogenides(TMDCs).Conventional strain engineering techniques(e.g.,mechanical bending,heating)cannot conserve strain due to their dependence on external action,which thereby limits the application in *** addition,the theoretically predicted strain-induced tuning of electrical performance of TMDCs has not been experimentally proved ***,a facile but effective approach is proposed to retain and tune the biaxial tensile strain in monolayer MoS_(2) by adjusting the process of the chemical vapor deposition(CVD).To prove the feasibility of this method,the strain formation model of CVD grown MoS_(2) is proposed which is supported by the calculated strain dependence of band gap via the density functional theory(DFT).Next,the electrical properties tuning of strained monolayer MoS_(2) is demonstrated in experiment,where the carrier mobility of MoS_(2) was increased by two orders(~0.15 to~23 cm^(2)·V^(−1)·s^(−1)).The proposed pathway of strain preservation and regulation will open up the optics application of strain engineering and the fabrication of high performance electronic devices in 2D materials.

关键词： MoS_(2) CVD carrier mobility strain engineering 2D materials

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平面/体异质结结构全色倍增型有机光电探测器

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science China Materials 2023年第3期66卷 1172-1179页

作者：虢德超杨丽清李骥何果郑景博陶思哲杨德志王林格 Agafonov Vadim 马东阁 Center for Aggregation-Induced Emission Institute of Polymer Optoelectronic Materials and DevicesGuangdong Provincial Key Laboratory of Luminescence from Molecular AggregatesGuangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional MaterialsState Key Laboratory of Luminescent Materials and DevicesSouth China University of TechnologyGuangzhou 510640China South China Advanced Institute for Soft Matter Science and Technology School of Emergent Soft MatterGuangdong Provincial Key Laboratory of Functional and Intelligent Hybrid Materials and DevicesSouth China University of TechnologyGuangzhou 510640China Moscow Institute of Physics and Technology Dolgoprudny 141700Russia

宽带有机光电探测器(OPDs)可以集成到各种可穿戴设备中,在健康监测等领域显示出巨大的应用潜力.这里,我们以酞菁铅(PbPc)和富勒烯(C70)小分子分别作为给体和受体,基于MoO_(3)俘获电子辅助空穴隧道注入的机制实现了高性能宽带倍增型有机... 详细信息

宽带有机光电探测器(OPDs)可以集成到各种可穿戴设备中,在健康监测等领域显示出巨大的应用潜力.这里,我们以酞菁铅(PbPc)和富勒烯(C70)小分子分别作为给体和受体,基于MoO_(3)俘获电子辅助空穴隧道注入的机制实现了高性能宽带倍增型有机光电探测器(PM-OPDs).为了控制PbPc分子的晶相结构,我们分别制备了PbPc:C70体异质结(BHJ)和PbPc/C70平面异质结(PHJ)器件.可以看出,PHJ器件表现出更强的近红外吸收特性,即更有利于PbPc分子形成三斜相结构.我们进一步使用具有吸收互补特性的材料(PbPc和SubPc)作为有源层,采用PHJ/BHJ混合异质结结构,制备了在300–1000 nm范围内平坦的全色PM-OPDs.在-8 V反向偏压下,制得的全色PM-OPDs在整个光谱响应范围内的外量子效率都超过1000%.最后,我们在聚对苯二甲酸乙二醇酯基板上制备了柔性全色PM-OPDs,并成功地实现了人体脉搏信号的检测.本文通过设计器件结构和选择合适的材料,为获得高性能全色PM-OPDs提供了一种新策略.

关键词：有机光电探测器光谱响应范围外量子效率异质结结构反向偏压有源层聚对苯二甲酸乙二醇酯可穿戴设备

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