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Polydopamine modified CuS@HKUST for rapid sterilization through enhanced photothermal property and photocatalytic ability

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Rare Metals 2022年第2期41卷 663-672页

作者： Dong-Lin Han Peng-Li Yu Xiang-Mei Liu Ying-De Xu Shui-Lin Wu College of Materials Science and Engineering Jilin Institute of Chemical TechnologyJilin 132022China School of Materials Science and Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei Key Laboratory of Polymer MaterialsSchool of Materials Science and EngineeringHubei UniversityWuhan 430062China

Because of the impressive evolution of the drugresistant bacteria,the development of efficient,antibioticfree agent is in great ***,an efficient antibacterial agent,CuS@HKUST-polydopamine(PDA),was exquisitely designed,where the Cu-based metal-organic framework(MOF)—HKUST nanoparticles served as the porous frame,and the CuS was synthesized within the structure of the MOF through the process of in situ sulfuration,followed with polydopamine(PDA)covering the *** structure of the HKUST preventing the aggregation of the CuS nanoparticles,which improved their photothermal and photocatalytic *** covering with PDA,the nanoparticles’abilities to produce heat and free radicals were further *** was because that the PDA itself could transform light into heat,which not only benefited the photothermal property,but also improved the photocatalytic property of the nanoparticles by accelerating the charge ***,the PDA could also transfer the photo-induced electrons fast and thus prevented the recombination of the photo-generated electron–hole pairs,which resulted in the enhanced ability to produce free *** a result,under light irradiation,the antibacterial efficiency of the CuS@HKUST-PDA against Staphylococcus aureus(***)and Escherichia coli(***)could reach 99.77%and 99.57%.Hence,the synthesized CuS@HKUST-PDA can be promising for anti-infection and sterilization application without using antibiotics.

关键词： Antibacterial CuS Polydopamine(PDA) Photothermal Photocatalytic Metal-organic framework(MOF)

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Cement-inspired readily fabricated water-strengthened polymeric materials

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science China Chemistry 2024年第10期67卷 3458-3467页

作者： Han Zuo Luzhi Zhang Huixia Xuan Shijia Gu Xinxin Xu Rasoul Esmaeely Neisiany Qilin Wu Zhengwei You State Key Laboratory for Modification of Chemical Fibers and Polymer Materials Institute of Functional MaterialsCollege of Materials Science and EngineeringDonghua UniversityResearch Base of Textile Materials for Flexible Electronics and Biomedical Applications(China Textile Engineering Society)Shanghai Key Laboratory of Lightweight CompositeShanghai Engineering Research Center of Nano-Biomaterials and Regenerative MedicineShanghai 201620China Zhejiang Hexin Science and Technology Co. Ltd.Jiaxing 314033China Biotechnology Centre Silesian University of TechnologyKrzywoustego 844-100 GliwicePoland Department of Polymer Engineering Hakim Sabzevari UniversitySabzevar ***Iran

Polymeric materials have penetrated all aspects of society and play an irreplaceable ***,there is an inherent contradiction between their mechanical properties and processing ***,inspired by cement,a crucial construction material renowned for its excellent fabricating behavior and self-strengthening properties,we have developed dynamic crosslinked poly(oxime-urethane)(CPOU).The synthesized CPOU showed good self-healing ability and 3D printability owing to the dynamic dissociation and re-association of oxime-carbamate *** objects printed through the fused deposition modeling technique were able to be readily assembled into complex architectures through intrinsic ***,the self-strengthening of CPOU was successfully realized through multiple-step tandem *** dissociation of dynamic oxime-carbamate bonds produced–NCO groups,which reacted with the surrounding water to form polar urea bonds in the polymer network,leading to an increase in the tensile strength of CPOU from 11.95 to 19.37 *** work not only develops the polymers with combined self-healing,facile fabricating,and self-strengthening properties but also provides a new molecular strategy to modulate the properties of polymers,which could be potentially applied in diverse areas.

关键词： dynamic bonds 3D printing self-strengthening self-healing

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Structural Design of a Kirigami Gripper by Finite Element Method

Structural Design of a Kirigami Gripper by Finite Element Me...

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International Conference on Mechanical Design, ICMD 2023

作者： Yang, Bohan Wu, Jian Li, Zhe Center for Rubber Composite Materials and Structures Harbin Institute of Technology Weihai264209 China National Key Laboratory of Science and Technology On Advanced Composites in Special Environments Harbin150090 China

ISBN: (纸本)9789819709212

Kirigami, an art form derived from paper-art, has gained attention in both artistic and engineering domains due to its ability to transform into complex geometric structures. This study focuses on a type of kirigami gripper, and studies three geometric parameters’ influence on the gripper’s mechanical performances. Experiments were conducted to examine the gripper's uniaxial tensile performance. The results showed a correlation between gripper thickness and tensile force, with thinner structures exhibiting easier deformation and larger displacement. Besides, the length of the cut mainly affected the trend of global curling and local bulging deformation, whereas the cut width mainly affected the max stress. These findings contribute to the understanding of kirigami grippers and their potential applications in various fields. © The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2024.

关键词： Finite element method

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Analysis of castability， mechanical and corrosion properties of Al–Zn–Ca alloys with high thermal conductivity

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Transactions of Nonferrous Metals Society of China 2024年

作者： A.A.LYSKOVICH V.E.BAZHENOV I.I.BARANOV V.A.BAUTIN A.V.SANNIKOV A.I.BAZLOV E.I.TIAN A. A.STEPASHKIN A.V.KOLTYGIN V.D.BELOV Casting Department， National University of Science and Technology "MISIS" Department of Metallurgy Steel， New Production Technologies and Protection of Metals， National University of Science and Technology "MISIS" Laboratory of Advanced Green Materials， National University of Science and Technology "MISIS" Center of Composite Materials， National University of Science and Technology "MISIS"

The majority of industrial aluminum casting alloys exhibit low thermal conductivity， which is insufficient for effective heat transfer in electronic devices. The objective of this investigation was to develop new aluminum casting alloys with high thermal conductivity. This research examined the impact of alloying elements on the thermal conductivity of pure aluminum and explored the relationships between microstructure， thermal conductivity， and the mechanical and corrosion properties of Al–Zn–Ca–（Cu，Mg） alloys. The findings indicate that in the as-cast state the structure of the alloys consists of α-Al and eutectic containing the （Al，Zn）4Ca phase. Following the application of solution heat treatment the （Al，Zn）4Ca phase is spheroidised and thermal conductivity of the alloys increased and reached >75% of pure aluminium thermal conductivity. However， the heat-treated alloys exhibited low mechanical properties: tensile yield strength <60 MPa， ultimate tensile strength <160 MPa and elongation at fracture >15%. The alloys demonstrated satisfactory fluidity and low hot tearing tendency. With the exception of the alloy containing copper， the alloys exhibited low corrosion rates， estimated at approximately 0.02 mm/a.

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Engineering Bipolar Doping in a Janus Dual-Atom Catalyst for Photo-Enhanced Rechargeable Zn-Air Battery

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Nano-Micro Letters 2025年第09期 37-52页

作者： Ning Liu Yinwu Li Wencai Liu Zhanhao Liang Bin Liao Fang Yang Ming Zhao Bo Yan Xuchun Gui Hong Bin Yang Dingshan Yu Zhiping Zeng Guowei Yang State Key Laboratory of Optoelectronic Materials School of Materials Science and Engineering Sun Yat-Sen University Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education Key Laboratory of High-Performance Polymer-Based Composites of Guangdong Province School of Chemistry Sun Yat-Sen University School of Materials Science and Engineering Suzhou University of Science and Technology State Key Laboratory of Optoelectronic Materials and Technologies School of Electronics and Information Technology Sun Yat-Sen University

Harnessing solar energy to enhance the rechargeable zinc–air batteries(RZABs) performance is a promising avenue toward sustainable energy storage and conversion. Simultaneously enhancing light-absorption capacity and carrier separation efficiency in nanomaterials, as well as improving electrical conductivity and configuration for electrocatalysis,presents a formidable challenge due to inherent trade-offs and interdependencies. Here, we have developed a Janus dual-atom catalyst(JDAC)with bifunctional centers for efficient charge separation and electrocatalytic performance through a bipolar doping strategy. The in situ X-ray absorption near-edge structure and Raman spectroscopy analyses demonstrated that the Ni and Fe centers in JDAC not only function as effective sites for oxygen evolution reaction and oxygen reduction reaction, respectively, but also serve as efficient hole and electron enrichment sites, effectively suppressing photoelectron recombination while enhancing photocurrent generation. As a result, the assembled JDAC-based lightassisted RZABs exhibited extraordinary stability at large current densities. This work delivers pivotal insight to design Janus dual-atom catalysts that efficiently convert solar energy into electric and chemical energy.

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Unexpected giant negative area compressibility in palladium diselenide

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National science Review 2023年第9期10卷 146-153页

作者： Xingxing Jiang Shengzi Zhang Dequan Jiang Yonggang Wang Maxim S.Molokeev Naizheng Wang Youquan Liu Xingyu Zhang Zheshuai Lin New Functional Crystals Group Key Laboratory of Functional Crystals and Laser TechnologyTechnical Institute of Physics and ChemistryChinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences University of Chinese Academy of Sciences Center for High Pressure Science &Technology Advanced Research School of Materials Science and Engineering Peking University Laboratory of Crystal Physics Kirensky Institute of PhysicsSB RAS Department of Physics Far Eastern State Transport University International Research Center of Spectroscopy and Quantum Chemistry Siberian Federal University

Negative area compressibility（NAC） is a counterintuitive 'squeeze-expand' behavior in solids that is very rare but attractive due to possible pressure-response applications and coupling with rich physicochemical ***,NAC behavior is reported in palladium diselenide with a large magnitude and wide pressure *** discover that,apart from the rigid flattening of layers that has been generally recognized,the unexpected giant NAC effect in PdSe2largely comes from anomalous elongation of intralayer chemical *** structural variations are driven by intralayer-to-interlayer charge transfer with enhanced interlayer interactions under *** work updates the mechanical understanding of this anomaly and establishes a new guideline to explore novel compression-induced properties.

关键词： negative area compressibility Lifshitz mechanism charge transfer

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Promoting effect of d-band center and in-situ precipitation strategy on sulfur evolution reaction

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Journal of Energy Chemistry 2025年第5期104卷 740-748页

作者： Jun Pu Yun Tan Jiasen Yin Zihan Shen Shoujie Liu Kai Zhang Lei Zhou Yagang Yao Key Laboratory of Functional Molecular Solids Ministry of EducationAnhui Provincial Engineering Laboratory for New-Energy Vehicle Battery Energy-Storage MaterialsCollege of Chemistry and Materials ScienceAnhui Normal UniversityWuhu 241002AnhuiChina National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional MaterialsCollaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093JiangsuChina State Key Laboratory of Multiphase Complex Systems Institute of Process EngineeringChinese Academy of SciencesBeijing 100190China School of Materials Science and Engineering Anhui UniversityHefei 230601AnhuiChina School of Energy and Power Engineering Jiangsu UniversityZhenjiang 212013JiangsuChina Department of Electrical Engineering Eindhoven University of TechnologyEindhoven MB 5600the Netherlands

The slow conversion of polyphase in lithium-sulfur(Li-S)batteries not only intensifies the shuttle effect of lithium polysulfides(LiPSs),but also causes the continuous accumulation of inactive sulfur species,resulting in rapid capacity attenuation and sluggish dynamic ***,the promoting effect of atomic interface stress on sulfur reaction was investigated via CoFe-CoFe_(2)O_(4)heterogeneous nanosheets with a cavity *** strain force induced by the in-situ precipitation of Co Fe bimetallic alloy in oxide matrix increased the d-band center,which was conducive to the interaction between catalyst and Li *** sulfur cathode based on this two-dimensional(2D)nanosheet design showed an extremely high capacity of 751 mAh g^(-1)at 4 *** with a sulfur loading of 5.55 mg cm^(-2),its area capacity was still as high as 7.15 mAh cm^(-2).Meanwhile,the enhanced stability greatly improved the practical potential of Li-S batteries.

关键词： 2D nanosheets In-situ precipitation Strain effect D-band center Li-S batteries

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A facile ligand engineering strategy to achieve ultra-highly efficient afterglow luminescence of ordinary metal salts

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science China Chemistry 2025年

作者： Li Ya Liang Xiao Yuan Wang Ya Ting Gao Da Jun Wu Da Wei Li Bin Bin Chen School of Chemistry & Molecular Engineering East China University of Science and Technology Key Laboratory for Advanced Materials Shanghai Key Laboratory of Functional Materials Chemistry Feringa Nobel Prize Scientist Joint Research Center Frontiers Science Center for Materiobiology & Dynamic Chemistry East China University of Science and Technology

Ordinary metal salts have become a promising afterglow material because of the characteristics of wide sources, low cost, and easy availability. However, their extremely weak afterglow efficiency makes them rarely used in practical applications. In this study, we proposed a ligand engineering strategy to greatly enhance the afterglow efficiency of metal salts. Al2（SO4）3, as a typical metal salt, has only a photoluminescence quantum yield（PL QY） as low as 0.1% and an unmeasurable phosphorescent QY. After doping with dual organic ligands, the PL QY of Al2（SO4）3has increased by nearly 200 times, reaching 19.90%. Meanwhile, the afterglow intensity of Al2（SO4）3has increased by approximately 20 times, accompanied by a great increase in phosphorescent lifetime from 416.15 to 2870.08 ms（a about 7-time increase）. The enhancement mechanism of afterglow efficiency is ascribed to the fact that the excited electrons from the dual ligands can be directly captured by oxygen defects（trap）, then transferred to the emitters(Al3+ions), and ultimately achieving efficient afterglow luminescence. This study utilizes ligand engineering strategy to improve the afterglow luminescence efficiency of metal salts, achieving their applications in deep ultraviolet（UV）-excited light emitting devices and visual ethylene glycol recognition.

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Sandwich-Structured Solar Cells with Accelerated Conversion Efficiency by Self-Cooling and Self-Cleaning Design

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Journal of Bionic Engineering 2024年第6期21卷 2955-2968页

作者： Huide Fu Ben Wang Rui He Yongpu Yang Hongyuan Li Zhiguang Guo College of Chemistry and Environmental Engineering Shenzhen UniversityShenzhen518060China State Key Laboratory for Turbulence and Complex Systems Department of Mechanics and Engineering ScienceBeijing Innovation Center for Engineering Science and Advanced TechnologyCollege of EngineeringPeking UniversityBeijing100871China Hubei Collaborative Innovation Centre for Advanced Organic Chemical Materials and Ministry of Education Key Laboratory for the Green Preparation and Application of Functional Materials Hubei UniversityWuhan430062PR China State Key Laboratory of Solid Lubrication Lanzhou Institute of Chemical PhysicsChinese Academy of ScienceLanzhou730000PR China

Photovoltaic(PV)power generation is highly regarded for its capability to transform solar energy into electrical ***,in real-world applications,PV modules are prone to issues such as increased self-heating and surface dust accumulation,which contribute to a reduction in photoelectric conversion ***,elevated temperatures can adversely affect the components’operational *** augment the efficiency and extend the lifespan of PV modules,it is crucial to implement cooling strategies and periodic surface dust *** this research,we introduce a composite PV module design that amalgamates a hygroscopic hydrogel with self-cleaning *** design incorporates a superhydrophobic polydimethylsiloxane(PDMS)film as its exposed surface layer and employs a PAM-CaCl2-SiC hygroscopic hydrogel for rear *** arrangement is intended to facilitate efficient surface self-cleaning and passive cooling of the composite PV *** studies were conducted to evaluate the performance of this innovative composite PV module design,and the results showed that the composite PV panel had an increase of about 1.39%in power generation compared to an ordinary PV panel in the spring of Shenzhen,China.

关键词： Self-cleaning Solar cell Superhydrophobic Hygroscopic hydrogel Conversion efficiency

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Pressure-induced superconductivity at 32 K in MoB2

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National science Review 2023年第5期10卷 215-220页

作者： Cuiying Pei Jianfeng Zhang Qi Wang Yi Zhao Lingling Gao Chunsheng Gong Shangjie Tian Ruitao Luo Mingtao Li Wenge Yang Zhong-Yi Lu Hechang Lei Kai Liu Yanpeng Qi School of Physical Science and Technology Shanghai Tech University Department of Physics and Beijing Key Laboratory of Opto-electronic Functional Materials&Micro-nano Devices Renmin University of China Shanghai Tech Laboratory for Topological Physics Shanghai Tech University Center for High Pressure Science and Technology Advanced Research Shanghai Key Laboratory of High-resolution Electron Microscopy Shanghai Tech University

Since the discovery of superconductivity in MgB2（Tc～ 39 K）,the search for superconductivity in related materials with similar structures or ingredients has never *** about 100 binary borides have been explored,only a few of them show superconductivity with relatively low *** this work,we report the discovery of superconductivity up to 32 K,which is the highest Tcin transition-metal borides,in MoB2under *** Tcof MoB2in the α phase can be well explained by theoretical calculations in the framework of electron-phonon ***,the coupling between the d electrons of Mo and the out-of-plane Mo-phonon modes are the main driving force of the 32 K superconductivity of *** study sheds light on the exploration of high-Tcsuperconductors in transition metal borides.

关键词： superconductivity high pressure borides

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