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SSRN 2024年

作者： Yang, An Liao, Zhengyu Xu, Zesheng Liu, Tian Fang, Yiqun Wang, Weihong Xu, Min Song, Yongming Li, Yao Wang, Qingwen Key Laboratory of Bio-based Material Science and Technology Ministry of Education Northeast Forestry University Heilongjiang Harbin150040 China College of Home and Art Design Northeast Forestry University Harbin150040 China Shandong Xingang Enterprise Group Co. Ltd. Linyi277600 China Center for Composite Materials and Structure Harbin Institute of Technology Heilongjiang Harbin150001 China College of Materials and Energy South China Agricultural University Guangzhou510642 China

With the widespread use of wood-based materials in human life, the availability of wood resources has gradually decreased. The use of low-value wood, without the need for chemical adhesives, has emerged as an effective strategy for addressing the crisis of depleting wood resources in the preparation of wood-based composites. In this study, a high-performance ultra-high filled wood-plastic composites (UFWPC) composed of wood flour (up to 95 wt.%) was prepared through cell wall densification and the construction of multiple cross-linked network structures via deep cross-fusion. The UFWPC exhibits excellent mechanical properties, the flexural strength of UFWPC is 5.9 times that of commercial particleboard, 2.1 times that of commercial fiberboard, and 2.6 times that of commercial wood-plastic composites. Additionally, UFWPC demonstrates excellent creep resistance, the creep strain is 76.79% lower than that of commercial wood-plastic composites. Furthermore, an innovative customization of a large-scale commercial continuous flat-pressing system was established to produce UFWPC. The highly efficient preparation of UFWPC positioned it as an excellent substitute for commercial wood-plastic composites, particleboard, and fiberboard. This approach provides a promising valorization and sustainability pathway for recycling plastics and low-value wood. © 2024, The Authors. All rights reserved.

关键词： Creep resistance

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Synthesis and properties of degradable and recycled bio-based amine cured epoxy resin

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Jingxi Huagong/Fine Chemicals 2022年第12期39卷 2577-2584页

作者： Feng, Haoyang Hu, Jingyuan Chen, Qing Yan, Shifeng Dai, Jinyue Liu, Xiaoqing Polymer and Composite Materials Division Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Zhejiang Provincial Key Laboratory of Bio-based Polymer Materials Technology and Application Ningbo315201 China School of Materials Science and Engineering Shanghai University Shanghai200444 China

bio-based amine(DAPVD), prepared via amination of glycidyl ether pentaerythritol divanillin epoxy(DEPVD) and characterized by FTIR, was cured with camphoric acid-based diglycidyl ester (DGECA) to synthesize epoxy resin. The properties of epoxy resin obtained were then analyzed by dynamic mechanical analyzer, tensile testing machine, reprocessing experiment, degradation experiment and thermogravimetric analyzer. The results indicated that the epoxy resin showed good thermomechanical, mechanical and thermal stability with a glass transition temperature 91 ℃, tensile strength (72.6±5.1) MPa and Young's modulus about (2493±58) MPa. The spiro diacetal structure in the curing agent endowed the epoxy resin with degradable properties, while the tertiary amine structure formed during the curing reaction promoted the participation of β-hydroxyl groups in the transesterification reaction. Therefore, the epoxy resin could retain 75% of the tensile strength after being reprocessed(hot pressing at 190 ℃, 10 MPa for 1 h). Moreover, both the epoxy resin and its carbon fiber composite could be completely degraded in ethanol solution with a H+ concentration of 0.1 mol/L(treatment temperature 50 ℃, time 48 h) with high-value carbon fibers completely recovered. © 2022, Editorial Office of FINE CHEMICALS. All right reserved.

关键词： Epoxy resins

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Interface engineering of Co(OH)2@CN p-n heterojunction for enhanced photocatalytic xylose/xylan oxidation and CO2 reduction

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SSRN 2024年

作者： Ling, Weikang Ma, Jiliang Jiang, Weikun Wei, Huanqiu Ren, Yuchen Hong, Min Kong, Lingzhao Sun, Runcang Liaoning Key Lab of Lignocellulose Chemistry and BioMaterials Liaoning Collaborative Innovation Center for Lignocellulosic Biorefinery College of Light Industry and Chemical Engineering Dalian Polytechnic University Dalian116034 China State Key Laboratory of Bio-based Materials and Green Papermaking Key Laboratory of Pulp & Paper Science and Technology of Shandong Province Ministry of Education Qilu University of Technology Shandong Academy of Sciences Jinan250353 China Centre for Future Materials School of Engineering University of Southern Queensland Springfield CentralQLD4300 Australia School of Environmental Science and Engineering Suzhou University of Science and Technology Jiangsu Suzhou China China

The construction of p-n heterojunction is considered a prominent method for promoting efficient separation/migration of photoinduced carriers, thereby enhancing photocatalytic performance. Herein, a series of nanoflower spherical Co(OH)2@CN-x p-n heterojunction photocatalysts were fabricated using a simplified one-step hydrothermal strategy. Notably, Co(OH)2@CN-2 exhibited optimal performance, showcasing a CO evolution rate of 46.2 μmol g-1 h-1 and a xylonic acid yield of 69.9%. These values are 14.7/3.7 and 2.8/2.4 times higher than those of pristine CN and Co(OH)2, respectively. Additionally, Co(OH)2@CN-2 demonstrated excellent recyclability and chemical stability. Comparative experiments, coupled with 13CO2-labelling testing, confirmed the carbon sources of the obtained CO (72.3% from CO2 reduction and 27.7% from xylose oxidation). The charge transfer mechanism in Co(OH)2@CN-x p-n heterojunctions was systematically elucidated using in-situ X-ray photoelectron spectroscopy and density functional theory calculations. This work presents a practical approach for constructing p-n heterojunction photocatalysts to enhance photocatalytic biomass oxidation coupled with CO2 reduction. © 2024, The Authors. All rights reserved.

关键词： Density functional theory

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Dual-Atom Fe(Ii,Iii)N2 (Μ2 -N)2 cu(I,Ii)N Moieties Anchored on Porous N-Doped Carbon Driving High-Efficiency Oxygen Reduction Reaction

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SSRN 2023年

作者： Xu, Mengyuan Zhang, Lilong Liang, Xiao Xiao, Hong Zhuang, Huifeng Zhang, Fanchao Zhang, Tengfei Han, Pinyu Dai, Wenjing Gao, Fan Zhang, Jian Zheng, Lirong Gao, Qiuming Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education Beijing Advanced Innovation Center for Biomedical Engineering School of Chemistry Beihang University Beijing100191 China Beijing Synchrotron Radiation Facility Institute of High Energy Physics Chinese Academy of Sciences Beijing100049 China Key Laboratory of Material Chemistry for Energy Conversion and Storage Ministry of Education Hubei Key Laboratory of Material Chemistry and Service Failure School of Chemistry and Chemical Engineering Huazhong University of Science and Technology Hubei Wuhan430074 China Guizhou University China

Atomically distributed iron electrocatalyst is valid for oxygen reduction reaction (ORR). However, accurate regulation of the structure improving its intrinsic activity is a challenge. Herein, a dual-atom catalyst FeCu-NC with atomically distributed Fe and Cu co-anchored on porous N-doped carbon is obtained. The FeN4 and CuN3 couple sites bridged by two nitrogen atoms, exist as Fe(II,III)N2 (µ2 -N)2 Cu(I,II)N moieties with the metal distance of ~2.5 Å in the structure of FeCu-NC. The synergistic effect of Fe and Cu dual-atom reducing the dissociation energy of *OOH intermediate, allows an optimized 4e- ORR reaction pathway. The FeCu-NC exhibits high-efficiency ORR activity with the half-wave potential (E1/2) of 0.889 V (vs RHE) and outstanding stability without obvious decay for the E1/2 after 10,000 cycles. The FeCu-NC based Zn-air battery presents large specific capacity of 788 mAh g-1 and energy density of 990 Wh kg-1 as well as high charge-discharge cycling stability superior to the Pt/C. © 2023, The Authors. All rights reserved.

关键词： Atoms

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Construction of a Self-Supporting Catalyst based on bionic Honeycomb Communication Channel from biomass Cork Waste for Hydrogen Evolution

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SSRN 2022年

作者： Zhai, Wenxiang Sun, Hao Zhang, Kun Ren, Zechun Ji, Tong Li, Yalan Wei, Xinli Xu, Min Cai, Liping Key Laboratory of Bio-Based Material Science and Technology Ministry of Education Material Science and Engineering College Northeast Forestry University No. 26 Hexing Road Xiangfang District Harbin150040 China Northeast Forestry University China Department of Mechanical Engineering University of North Texas 3940 N. Elm St. DentonTX United States

It is a great challenge to achieve efficient hydrogen evolution reaction (HER) in alkaline medium. Multi-layer functional carbon can provide abundant anchor points for metal nanostructures, showing great potential in improving the catalytic activity of electrolyzed water in alkaline medium. Inspired by honeybee hives, an efficient hydrogen evolution electrode (RuNi-LMH@NCNT/CW) was developed by structuring multi-directional N-doped carbon nanotubes on porous carbonized cork (CW), which encapsulates Ru/RuNi nanoparticles uniformly grown on Ni(OH) 2 nanostructures. Interestingly, the whole encapsulation of Ni(OH) 2 nanostructured doped Ru/RuNi nanoparticles by carbon nanotubes was obtained. The exposed active edges of multilayer porous nanostructures and the high conductivity of the carbonized cork jointly improved the electrocatalytic performance of HER. Specifically, the RuNi-LMH@NCNT/CW electrode showed an overpotential as low as 67mV, achieved excellent HER activity with a current density of 10mA cm −2 in 1 M KOH solution and showed a low Tafel slope of 41.3mV dec −1 , while having excellent stability in alkaline medium. This study provides a bionic composite structure for electrolyzing water to produce hydrogen. In addition, to a certain extent, this study solves the problem that it is difficult to load active particles caused by cork sealing cell structure. © 2022, The Authors. All rights reserved.

关键词： Catalyst activity

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Optimal Design and Fabrication Of Thin-Walled Microtubules Via a Novel Screw Twist Extrusion technology on Mg-Zn-Nd-Y Alloy

SSRN

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SSRN 2024年

作者： Tian, Lei Wang, Lifei Ge, Zhipeng Yang, Qingshan Deng, Kunkun Li, Ruidi Zheng, Liuwei Wang, Hongxia Arthanari, Srinivasan Tiyyagura, Hanuma Reddy Shin, Kwang Seon Shanxi Key Laboratory of Advanced Magnesium-Based Materials College of Materials Science and Engineering Taiyuan University of Technology Taiyuan030024 China School of Metallurgy and Material Engineering Chongqing University of Science and Technology Chongqing401331 China State Key Laboratory of Powder Metallurgy Central South University Changsha410083 China 99 Daehak-ro Yuseong-gu Daejeon34134 Korea Republic of Rudolfovo-Science and Technology Centre Novo Mesto Podbreznik 15 Novo Mesto8000 Slovenia Magnesium Technology Innovation Center School of Materials Science and Engineering Seoul National University Gwanak-ro Gwanak-gu Seoul08826 Korea Republic of

In this work, a thin-walled microtubule of Mg-2Zn-0.5Nd-0.5Y alloy with an outer diameter of 3.2mm and wall thickness of 0.5mm is fabricated at 250 °C based on a novel screw twist extrusion (STE) technique. After STE preprocessing, the deformation induces continuous dynamic recrystallization (CDRX) and particle stimulation nucleation (PSN) behaviors and texture rotation, which greatly refine the grains and weaken the basal texture, thus increasing the ductility of the as-received sample by 61.9%, providing an excellent initial material for the subsequent microtubule fabrication. The rotation of crystal orientation induced by STE deformation increases the SF of basal slips, which promotes their increased activation to coordinate deformation during microtubule formation. The predicted texture and relative activities of deformation mechanisms obtained by visco-plastic self-consistent (VPSC) simulation also prove these. The refinement of grains and second phase particles and the texture evolution also make it easier for thin-walled microtubules to produce a corrosion protection film, thus inhibiting the corrosion expansion of the Mg matrix. Therefore, the flexibility of the final-form microtubule has increased by 21.6%, and its corrosion resistance has also improved significantly. This method of optimizing the initial material and activating more deformation mechanisms through pretreatment process provides references for further development of biomedical thin-walled microtubules and vascular stents in Mg-RE alloys. © 2024, The Authors. All rights reserved.

关键词： Screws

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Electrochemical Fiber Electrode Fabrication by Spinning: State-of-the-Art and Perspectives

ACS Electrochemistry

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ACS Electrochemistry 2025年第6期1卷 774-804页

作者： Yongdan Hou Emmanuel Abankwah Ofori Lemuel Gbologah Yongchen Xiong Kwadwo Mensah-Darkwa Benjamin Tawiah Bin Fei Xiaoyu Zhao Hubei Key Laboratory of Energy Storage and Power Battery Shiyan Key Laboratory of Quantum Information and Precision Optics School of Automotive Materials Hubei University of Automotive Technology Shiyan 442002 China Department of Materials Engineering College of Engineering and The Brew-Hammond Energy Centre Kwame Nkrumah University of Science and Technology (KNUST) Kumasi AK-448-7038 Ghana Department of Industrial Art (Textiles) Kwame Nkrumah University of Science and Technology (KNUST) PMB Kumasi AK-417-4732 Ghana；School of Fashion and Textiles (SFT) The Hong Kong Polytechnic University 11 Yuk Choi Rd Hung Hom Kowloon Hong Kong SAR 999077 China School of Fashion and Textiles (SFT) The Hong Kong Polytechnic University 11 Yuk Choi Rd Hung Hom Kowloon Hong Kong SAR 999077 China State Key Laboratory of Bio-based Fiber Materials College of Chemical Engineering and Materials Science Tianjin University of Science and Technology Tianjin 300457 China

Advancements in spinning techniques for fiber-based electrodes in flexible electrochemical energy storage devices have gained attention, as spun fibers with properties determined by these techniques are promising alternatives to traditional electrodes. Hence, this work has reviewed breakthroughs in spinning technologies for high-performance electrodes, which possess enhanced electrical conductivity, mechanical toughness, and electrochemical stability. Highlights of the critical relationship between spinning parameters, fiber morphology, and electrochemical performance are also discussed. Furthermore, challenges in the scalability of fiber-based electrode production and the regulation of their characteristics and electrochemical performance are discussed, along with their potential applications in next-generation energy storage devices.

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Directed Electron Transport Induced Surface Reconstruction of 2d Nife-Ldh/Stanene Heterojunction Catalysts for Efficient Oxygen Evolution

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SSRN 2024年

作者： Lu, Ze Wang, Jingkun Zhang, Pengfei Guo, Wenhao Shen, Yongqing Liu, Peizhi Ji, Jianlong Zhao, Min Liang, Haojie Guo, Junjie Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education College of Materials Science and Engineering Taiyuan University of Technology Shanxi Taiyuan030024 China Aluminum-Magnesium Based New Material R&D Co. Ltd. Subsidiary of Xing Xian County Economic and Technological Development Zone Xing County Xi'An033600 China

As promising non-noble candidates for oxygen evolution reaction (OER), NiFe-based layered double hydroxides (NiFe-LDH) has been proven to transform into its high-oxidation-state Ni/Fe oxyhydroxide, which act as the primary active sites. However, advancing the emergence of high-oxidation-state Ni/Fe oxyhydroxide during OER process currently remains a challenge. Herein, a novel 2D NiFe-LDH/stanene p-n junction catalyst is achieved by inserting stanene between NiFe LDH and Ni foam. Time-dependent Raman spectra and density functional theory calculations (DFT) confirm that stanene not only benefits for the construction of built-in electric field, but also serves as an electron absorber to induce a directed electron transport from Ni, Fe to Sn, which thus facilitates the surface reconstruction to form the catalytically active NiOOH. Consequently, an ultralow OER overpotential (230 mV) at 100 mA cm-2 is achieved, corresponding to a considerable decrease of 22.3 % and 42.1 % compared with the individual NiFe-LDH and stanene, respectively. © 2024, The Authors. All rights reserved.

关键词： Density functional theory

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Optimizing Light and Heavy Aromatic Ratios in Fluid Catalytic Cracking Slurry Oil for Mesophase Pitch with Wide-Area Optically Anisotropic Texture

SSRN

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SSRN 2024年

作者： Liao, Gen Shi, Kui Ye, Chong Fan, Zhen Li, Tongqi Zhu, Shipeng He, Xubin Huang, Dong Han, Fei Liu, Hongbo Liu, Jinshui College of Materials Science and Engineering Hunan Province Key Laboratory for Advanced Carbon Materials and Applied Technology Hunan University Changsha410082 China Hunan Province Engineering Research Center for High Performance Pitch-based Carbon Materials Hunan Toyi Carbon Material Technology Co. Ltd. Changsha410000 China State Key Laboratory of Advanced Design and Manufacturing for vehicle Hunan University Changsha410082 China Key Laboratory of Advanced Functional Composite Materials Aerospace Research Institute of Materials and Processing Technology Beijing100076 China China Academy of Launch Vehicle Technology China

Aromatics are the preponderant component of fluid catalytic cracking (FCC) slurry oil, with notable differences in molecular structure between the light and heavy aromatics. The effect of these differences on the formation and optically anisotropic texture of mesophase remains elusive, impeding the preparation of high-quality mesophase pitch. This paper aims to regulate the ratio of light to heavy aromatics in the FCC slurry oil for optimizing the optically anisotropic texture of mesophase pitch. The results show that the heavy aromatics possess higher aromaticity, longer alkane side chains, larger molecular size and more reactive structures (methylene bridges, n-alkane structures) compared with the light aromatics. As an "accelerator", heavy aromatics can form mesophase quickly. Light aromatics not only served as a "diluent," but also assumed the function of a "lubricant", which facilitated the orderly arrangement of aromatic molecular lamellar. The system exhibits moderate reactivity that inhibits excessive condensation and modifies the structural orientation of pyrolysis products with the 2/5 ratio of light to heavy aromatics. Under these conditions, a high-quality mesophase pitch (d002=3.485 Å, Lc=19.832 Å) with wide-area optically anisotropic texture, suitable softening point (262°C) and short polymerization time (t=5.5 h) was obtained. This work provides theoretical support for the preparation of high-quality mesophase pitch by regulating the components of slurry oil. © 2024, The Authors. All rights reserved.

关键词： Aromatization

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An orthogonal dual-regulation strategy for sensitive biosensing applications

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National science Review 2022年第9期9卷 246-259页

作者： Xian Yang Jinhua Wang Zhongfeng Gao Weiqi Zhang Hai Zhu Yongjun Song Quan Wang Mingjie Liu Lei Jiang Yu Huang Fan Xia State Key Laboratory of Biogeology and Environmental Geology Engineering Research Center of Nano-Geomaterials of Ministry of EducationFaculty of Material Science and ChemistryChina University of Geosciences State Grid Integrated Energy Service Group CO.LTD. State Key Laboratory of Proteomics Beijing Proteome Research Center National Center for Protein Sciences(Beijing)Beijing Institute of Lifeomics Shandong Provincial Key Laboratory of Detection Technology for Tumor Markers College of Chemistry and Chemical Engineering Linyi University Key Laboratory of Bio-Inspired Smart Interfacial Science and Technology of the Ministry of Education School of Chemistry and EnvironmentBeihang University Zhejiang Institute China University of Geosciences

biosensing systems based on controllable motion behaviors of droplets have attracted extensive attention,but still face challenges of insufficient sensitivity and uncontrollable dynamic range due to imprecise manipulation of droplet motion on the ***,we report an orthogonal dual-regulation strategy for precise motion control of droplets and we demonstrate its utility as a sensitive sensing system with controllable dynamic ranges of sensing for adenosine triphosphate,miRNA,thrombin and kanamycin,as well as discrimination of five kinds of D *** endowed a DNA-contained bio-droplet sliding on a lubricant-infused structural surface with micro-grooves to separately adjust the resistance from liquid phase and solid *** resistance from liquid phase mainly depended on hydrophobic interaction between DNA and lubricant,which can be finely tuned by different DNA's average chain ***,the resistance from solid surface was determined by the energy barrier from the periodic micro-grooves,which can be adjusted by varying the droplet's sliding direction on the *** hydrophobic interaction is conformed to be orthogonal to the micro-grooves' anisotropic resistance by three different *** orthogonal dual-regulation strategy thus demonstrated its ability to precisely control bio-droplets' motion behaviors and sensitive detection with adjustable dynamic ranges for various *** dual-regulation strategy will provide significant insights for super-wettable biosensors,visual inspection and beyond.

关键词： motion behavior sensitive detection dynamic range hydrophobic interaction anisotropic resistance

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