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A multi-dimensional graded structure design based on structural impact response behavior for stress–strain rate control

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Composite Structures 2025年 370卷

作者： Zhiqiang Liu Ziqi Wu Lei Li Qiguang He Ruizhi Zhang Jian Zhang Guoqiang Luo Qiang Shen State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China School of Materials Science and Engineering Wuhan University of Technology Wuhan 430070 China National Key Laboratory of Shock Wave and Detonation Physics Institute of Fluid Physics China Academy of Engineering Physics Mianyang 621900 China Hubei Longzhong Laboratory Xiangyang 441000 Hubei China

Understanding material behavior under varying stress and strain rates is key to improving design integration and reliability in critical sectors like defense and manufacturing. An innovative multi-dimensional honeycomb array gradient flyer (HAGF) is introduced to enable precise control over stress–strain rates, representing a significant advancement in material design. For the first time, LS-DYNA simulations uncover the detailed mechanisms of shock wave propagation, attenuation, and convergence by adjusting element numbers and spacing. Based on the proposed shock wave propagation mechanism, a multi-dimensional graded structure was designed and fabricated using projection microstereolithography (PμSL) with controlled polymerization, resulting in a defect-free structure with a tip size of 41.2 μm–67.5 % smaller than previous designs. This innovation enables controlled loading within low-stress (GPa) and strain-rate (10 4 –10 5 /s) ranges, providing a novel methodology for evaluating material dynamic responses in extreme environments. These findings provide a new technical foundation for improving material performance in demanding applications.

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Boron-Induced Interstitial Effects Drive Water Oxidation on Ordered Ir−B Compounds

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Angewandte Chemie 2024年第35期136卷

作者： Ding Chen Ruohan Yu Hongyu Zhao Jixiang Jiao Xueqin Mu Jun Yu Prof. Shichun Mu State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 P. R. China The Sanya Science and Education Innovation Park of Wuhan University of Technology Sanya 572000 P. R. China

Interstitial filling of light atoms strongly affects the electronic structure and adsorption properties of the parent catalyst due to ligand and ensemble effects. Different from the conventional doping and surface modification, constructing ordered intermetallic structures is more promising to overcome the dissolution and reconstruction of active sites through strong interactions generated by atomic periodic arrangement, achieving joint improvement in catalytic activity and stability. However, for tightly arranged metal lattices, such as iridium (Ir), obtaining ordered filling atoms and further unveiling their interstitial effects are still limited by highly activated processes. Herein, we report a high-temperature molten salt assisted strategy to form the intermetallic Ir−B compounds (IrB 1.1 ) with ordered filling by light boron (B) atoms. The B residing in the interstitial lattice of Ir constitutes favorable adsorption surfaces through a donor-acceptor architecture, which has an optimal free energy uphill in rate-determining step (RDS) of oxygen evolution reaction (OER), resulting in enhanced activity. Meanwhile, the strong coupling of Ir−B structural units suppresses the demetallation and reconstruction behavior of Ir, ensuring catalytic stability. Such B-induced interstitial effects endow IrB 1.1 with higher OER performance than commercial IrO 2 , which is further validated in proton exchange membrane water electrolyzers (PEMWEs).

关键词： interstitial effects intermetallic compounds oxygen evolution donor-acceptor architecture host–guest electron coupling

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Biomimetic Design of MOFs-Based Nanocarriers Advances Aqueous Lubrication and Anti-Inflammatory Drug Release

SSRN

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SSRN 2023年

作者： Wu, Wei Gong, Peiwei Zhang, Weixi Lin, Xiao Xue, Huidan Liu, Jianxi State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal Materials School of Materials Science and Engineering Northwestern Polytechnical University Xi’an710072 China The Key Laboratory of Life-Organic Analysis School of Chemistry and Chemical Engineering Qufu Normal University Qufu273165 China School of Food and Biological Engineering Shaanxi University of Science and Technology Xi’an710021 China Key Lab for Space Biosciences and Biotechnology Research Center for Special Medicine and Health Systems Engineering School of Life Sciences Northwestern Polytechnical University Xi’an China

This work demonstrates surface assembling of partially acidified sodium hyaluronate (SHA) biomacromolecule on drug-loaded metal-organic frameworks nanoparticles (nanoMOFs) that can achieve aqueous lubrication and anti-inflammatory drug release for synergistic therapy of osteoarthritis (OA). Sodium hyaluronate was partially acidified to transform part of the sodium carboxylate to be carboxylic acid (SHA-COOH), which could coordinatively assembled on the UiO-66 and UiO-67 nanocarriers. Surface functionalization of the nanoMOFs with SHA-COOH polymer greatly enhanced their aqueous dispersion stability and lubricating performance due to the strong dipole-charge interaction between sodium ion and water molecules. Reductions over 50% and 96% in both coefficient of friction and wear volume were achieved by adding the UiO-66@SHA-COOH and UiO-67@SHA-COOH in water, which possessed high load-carrying capacity and long-term durability. After loading with aspirin as anti-inflammatory drug, the nanocarriers showed sustained drug release, which benefitted the drug delivery efficiency. Excellent anti-wear performance and extended drug release of the UiO-67@SHA-COOH additives were demonstrated to compare with that of the UiO-66@SHA-COOH due to the higher pore sizes. By co-culturing the aspirin-loaded UiO-67@SHA-COOH with C-28/I2 cells, the nanocarriers showed good biocompatibility and anti-inflammatory effect through tuning the expression of OA-related genes of human normal chondrocytes with inflammation. Our work supported biomacromolecule-functionalized nanoMOFs as a potential dual-functional nanocarriers for biomedical applications. © 2023, The Authors. All rights reserved.

关键词： Pore size

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Electric-field-assisted Proton Coupling Enhanced Oxygen Evolution Reaction

Research Square

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Research Square 2024年

作者： Pan, Xuelei Yan, Mengyu Liu, Qian Zhou, Xunbiao Liao, Xiaobin Sun, Congli Zhu, Jiexin McAleese, Callum Couture, Pierre Sharpe, Matthew K. Smith, Richard Peng, Nianhua England, Jonathan Tsang, Shik Chi Edman Zhao, Yunlong Mai, Liqiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China Wolfson Catalysis Centre Department of Chemistry University of Oxford OX1 3QR United Kingdom School of Materials Science and Engineering Zhejiang University Hangzhou310027 China UK National Ion Beam Centre University of Surrey Guildford SurreyGU2 7XH United Kingdom Dyson School of Design Engineering Imperial College London LondonSW7 2BX United Kingdom National Physical Laboratory Teddington MiddlesexTW11 0LW United Kingdom

The discovery of Mn-Ca complex in photosystem II stimulates research of manganese-based catalysts for oxygen evolution reaction (OER). However, conventional chemical strategies face challenges in regulating the four electron-proton processes of OER. Herein, we investigate alpha-manganese dioxide (α-MnO2) with typical MnIV-O-MnIII-HxO motifs as a model for adjusting proton coupling. We reveal that pre-equilibrium proton-coupled redox transition provides an adjustable energy profile for OER, paving the way for in-situ enhancing proton coupling through a new "reagent"— external electric field. Based on the α-MnO2 single-nanowire device, gate voltage induces a 6-fold increase in OER current density at 1.7 V versus reversible hydrogen electrode. Moreover, the proof-of-principle external electric field-assisted flow cell for water splitting demonstrates a 34% increase in current density and a 44.7 mW/cm2 increase in net output power. These findings indicate an in-depth understanding of the role of proton-incorporated redox transition and develop practical approach for high-efficiency electrocatalysis. © 2024, CC BY.

关键词： Oxygen

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Alumina Ceramics Fabricated by in-situ Consolidation of Pre-gelling Starch

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Journal of Wuhan University of technology(materials Science) 2018年第3期33卷 758-766页

作者：朱田丽王友法 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

An in-situ consolidation method was developed and optimized to successfully fabricate alumina ceramics using pre-gelling starch. Our results showed that the obtained ceramics have more homogeneous microstructure, higher density, higher flexural strength, and favorable biocompatibility compared to the regular one. During the process, cornstarch granules swelled and deformed but no fracture was observed. After the cornstarch granules bursted, alumina particles were suspended uniformly in the three-dimensional network structure to generate a much smoother surface. Below 0.5 wt% higher cornstarch content increased the flexural strength of prepared ceramics, while above 0.5 wt% the mechanical properties were compromised. Therefore the cornstarch content of 0.5% was the optimal concentration to achieve the highest mechanical strength of the prepared ceramics, with a measured flexural strength of 341 MPa, and a relative density of 96.01%.

关键词： pre-gelling starch in-situ consolidation alumina-ceramic flexural strength biocompatibility

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CdS/DBTSO-BDTO S-scheme photocatalyst for H₂ production and its charge transfer dynamics

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Wuli Huaxue Xuebao/ Acta Physico - Chimica Sinica 2025年第8期41卷

作者： Cai, Jiajie Cheng, Chang Liu, Bowen Zhang, Jianjun Jiang, Chuanjia Cheng, Bei State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Hubei Province Wuhan 430070 China Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences 68 Jincheng Street Hubei Province Wuhan 430078 China College of Environmental Science and Engineering Nankai University Tianjin 300350 China

Photocatalytic hydrogen (H2) production is a clean energy technology, with great potential for addressing the global energy crisis and related environmental problems. However, single-component photocatalysts often suf... 详细信息

Photocatalytic hydrogen (H₂) production is a clean energy technology, with great potential for addressing the global energy crisis and related environmental problems. However, single-component photocatalysts often suffer from low efficiency primarily due to fast charge carrier recombination and the tradeoff between light-absorbing capacity and redox capabilities. Constructing heterojunctions provides a promising strategy to overcome these drawbacks, and S-scheme heterojunctions have recently stood out, demonstrating the capability to efficiently facilitate electron/hole separation, while maximizing the redox capability. Among them, polymer-based S-scheme photocatalysts are emerging, though the charge carrier dynamics in inorganic-organic S-scheme heterojunctions remain to be elucidated. Herein, we fabricated an S-scheme heterojunction comprised of the conjugated polymer dibenzothiophene-S,S-dioxide-alt-benzodithiophene (DBTSO-BDTO) and cadmium sulfide (CdS) for photocatalytic H₂ production. The S-scheme mechanism was verified using in situ irradiated X-ray photoelectron spectroscopy, and the charge carrier transfer dynamics were analyzed in depth using femtosecond transient absorption spectroscopy, which revealed that a considerable fraction of electrons undergo interfacial charge transfer in the CdS/DBTSO-BDTO composite. Owing to the improved charge separation efficiency and redox capability, the performance of the composite surpassed that of DBTSO-BDTO and CdS, and the H₂ evolution rate of the optimized CdS/DBTSO-BDTO material reached 3313 μmol h⁻¹ g⁻¹, three times that of pure CdS. The findings provide new insights into the electron transfer mechanisms of S-scheme heterojunctions, and can guide the design of polymer-based photocatalysts for solar fuel production. © 2025 College of Chemistry and Molecular Engineering, Peking University

关键词： Cadmium sulfide Femtosecond transient absorption spectroscopy H2 production Photocatalysis S-scheme heterojunction

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H2-free Semi-hydrogenation of Butadiene by the Atomic Sieving Effect of Pd Membrane with Tree-like Pd Dendrites Array

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Angewandte Chemie (International ed. in English) 2023年第38期62卷 e202309013页

作者： Yong-Qin Yan Zhao Wei Zhao Wang Yao Li Wei-Hao Wang Bo Jiang Bao-Lian Su Wuhan University of Technology - Mafangshan Campus: Wuhan University of Technology State Key Laboratory of Advanced technology for Materials Synthesis and Processing Luoshi Road 122 Wuhan 430070 Wuhan CHINA. Wuhan University of Technology - Mafangshan Campus: Wuhan University of Technology State Key Laboratory of Advanced technology for Materials Synthesis and Processing Luoshi Road 122 430070 Wuhan CHINA. University of Namur: Universite de Namur Chemistry 61 rue de Bruxelles 5000 Namur BELGIUM.

H2-free semi-hydrogenation at room temperature shows great advantage for replacing the thermocatalytic process in industry owing to the high energy and resource saving, however, remains great challenges. Herein, a tree-like Pd dendrites array decorated Pd membrane was constructed as the core device in an electrochemistry assisted gas-fed membrane reactor for butadiene semi-hydrogenation. It reveals that hydrogen atomic sieving effect of this Pd-based membrane under electrochemical condition was the key for semi-hydrogenation. The configuration study of Pd nanostructured membrane demonstrates that the penetration of hydrogen atoms through Pd membrane from electrochemical side to chemical side is affected by the consumption of hydrogen atom in semi-hydrogenation step. Such atomic sieving property of nanostructured Pd membrane with 5.1 times increase in catalytic active surface area brings above 14 times higher in butadiene conversion than that of bare Pd foil, with ~90% of butenes selectivity at butadiene conversion ~98% over 300h of H2-free reaction under 15 mA cm-2.

关键词： 1,3-Butadiene Pd Membrane Semi-Hydrogenation Unsaturated Hydrocarbons Water Electrolysis

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Continuous-flow photochemistry: An expanding horizon of sustainable technology

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Chinese Chemical Letters 2020年第9期31卷 2395-2400页

作者： Jingli Xie Dongyuan Zhao College of Biological Chemical Science and EngineeringJiaxing UniversityJiaxing 314001China Chemistry and Chemical Engineering Guangdong Laboratory Guangdong Technion–Israel Institute of Technology(GTIIT)Shantou 515031China State Key Laboratory of Inorganic Synthesis and Preparative Chemistry College of ChemistryJilin UniversityChangchun 130012China State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of MatterChinese Academy of SciencesFuzhou 350002China Department of Chemistry and Laboratory of Advanced Materials Shanghai Key Lab of Molecular Catalysis and Innovative MaterialsiChEM and State Key Laboratory of Molecular Engineering of PolymersFudan UniversityShanghai 200433China

Understanding the unique characteristics of continuous-flow photochemistry will lead to a paradigm shift in the way we enhance sustainability and *** this mini-review,we first provide a succinct overview of working principles of this technique and discuss several recent synthetic ***,emphasis is given to those representative examples which address environmental issues such as indoor air pollutants and water ***,recent progress made using this technique to deal with rising CO2 emission,solar energy utilization and biomedical equipment is *** is believed that this mini-review could inspire more chemists to utilize this technique in their research,either in the academic or industrial field.

关键词： Continuous-flow photochemistry synthesis Environmental application Micro-reaction technology Sustainable technology

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Metal-Organic Framework Nanocrystals Enabled Efficient and Durable Two-Step Perovskite Photovoltaics

SSRN

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SSRN 2022年

作者： Liang, Xiao Zhou, Kang Duan, Dawei Wang, Fei Ge, Chuangye Zhou, Xianfang Yuan, Mingjian Shi, Yumeng Lin, Haoran Zhu, Quanyao Li, Gang Hu, Hanlin Hoffman Institute of Advanced Materials Shenzhen Polytechnic 7098 Liuxian Boulevard Shenzhen518055 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing School of Materials Science and Engineering Wuhan University of Technology Wuhan430070 China The Hong Kong Polytechnic University Hung Hom Kowloon Hong Kong College of Chemistry Nankai University Tianjin300071 China International Collaborative Laboratory of 2D Materials for Optoelectronics Science and Technology of Ministry of Education Institute of Microscale Optoelectronics Shenzhen University Shenzhen518060 China The Hong Kong Polytechnic University Shenzhen Research Institute Guangdong Shenzhen518057 China

The complete conversion of PbI2 into high-grade perovskite material with less trap-state density and long-term durability still remains challenging for two-step perovskite photovoltaics. In this work, nanoscale UiO-66, as a classical Zr-MOFs with respectable stability and high specific surface area, has been innovatively introduced into the PbI2 layer to facilitate the conversion process by morphology tuning and also ultimately improve the durability of the resultant perovskite photovoltaic devices. The added UiO-66 has impressively changed the morphology of PbI2 film from a pristine compact one into a porous structure, providing better contact with organic salt during second-step deposition, consequently benefitting the thorough and uniform perovskite conversion process. Importantly, the addition of UiO-66 has effectively suppressed the halide vacancies formation due to the increased halide vacancy formation energy at the interface, as evidenced by density functional theory (DFT) calculation, leading to noticeably enhanced charge transport property and greatly improved optoelectronic property. Furthermore, the crystal orbital Hamilton population (COHP) calculation result directly proves that the incorporation of UiO-66 has enhanced the stability of perovskite materials by intensifying the bonding interaction of Pb-I bonds at the interface. Consequently, the UiO-66-assisted devices deliver a champion power conversion efficiency of 23.05% with noticeably improved stability, significantly outperforming the pristine devices. This work demonstrates a brightening potential of MOFs to assist the consequential manufacture of highly efficient and stable perovskite solar cells for upscaling process and deployment in the near future. © 2022, The Authors. All rights reserved.

关键词： Perovskite

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3D Nitrogen-Doped Graphene Encapsulated Metallic Nickel-Iron Alloy Nanoparticles for Efficient Bifunctional Oxygen Electrocatalysis

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CHEMISTRY-A EUROPEAN JOURNAL 2020年第18期26卷 3896-3896页

作者： Wang, Zhaoyang Liao, Xiaobin Lin, Zifeng Huang, Fuzhi Jiang, Yalong Owusu, Kwadwo Asare Xu, Lin Liu, Ziang Li, Jiantao Zhao, Yan Cheng, Yi-Bing Mai, Liqiang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing State Key Laboratory of Silicate Materials for Architectures Wuhan University of Technology Wuhan 430070 P. R. China ARC Centre of Excellence in Exciton Science Monash University Clayton Victoria 3800 Australia

Constructing high-efficient, low-cost and robust oxygen electrocatalyststoward rechargeable Zn-air batteries remains a big challenge. Herein, metallic Ni3Fe alloy nanoparticles encapsulated in 3D porous N-doped graphene aerogel was prepared through a facile hydrothermal assembly and calcination process. Inspired by the unique configuration and strong electronic interactions between Ni3Fe and N-doped graphene, Ni3Fe-GA(1)exhibited outstanding activity and stability for OER, ORR, and Zn-air batteries. More information can be found in the Full Paper by L. Xu, L. Mai, et al. (DOI:10.1002/chem.201904722).

关键词： 3D nitrogen-doped graphene aerogel bifunctional electrocatalyst interface engineering nanoparticles Zn–air batteries

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