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Microwave excited hyperthermy and catalysis of heterostructured Au/Cu–BTA for effective bacteria killing by accelerating charge separation

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Rare Metals 2024年第10期43卷 5186-5201页

作者： Wen-Jing Zhang Li-Guo Jin shui-lin wu Chao-Feng Wang Yu-Feng Zheng Zhao-Yang Li Zhen-Duo Cui Hui Jiang Sheng-Li Zhu Xiang-Mei Liu School of Materials Science and Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin University Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science&EngineeringHubei University School of Materials Science and Engineering Peking University School of Health Science and Biomedical Engineering Hebei University of Technology

Deep tissue infections caused by pathogenic bacteria seriously threat the lives of *** this study a smart heterostructured Au/Cu-BTA （BTA=1,2,4,5-benzenetetramine） with microwave （MW） response is synthesized via NaBH4reduction of HAuCl4on the ***/Cu-BTA exhibits excellent hyperthermy and dynamics under MW *** MW thermal mechanism of Au/Cu-BTA is attributed to the excellen dielectric loss and polarization of the heterogeneous ***,the surface energy levels of the Cu-BTA interface alleviate the difficulty of electron hopping through multistage ***,MW can excite Cu-BTA to produce free ***,Au nanoparticles rapidly increase electron transfer and inhibit electron-hole ***,the yields of reactive oxygen species can be enhanced for MW dynamic therapy Consequently,under 10 min of MW irradiation,Au/Cu-BTA killed 99.998%±0.001% of Gram-positive Staphylococcus aureus,99.966%±0.014% of methicillin-resistant Staphylococcus aureus,and 96.871%±0.831% of Gram-negative Pseudomonas *** effective MW bacteria-killing strategy designed in this study shows significant potential for application in the MW-responsive treatment of deep tissue infections without antibiotics.

关键词： Anti-infection Antibacterial Microwave therapy

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Low-cost 0D and 2D carbon material co-decorated titanium dioxide ternary heterojunction for rapid and efficient bacteria killing under visible light

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cMat 2024年第2期1卷 20-29页

作者： Yuan Li Peng-Feng Yuan Chao-Feng Wang Xiang-Mei Liu Sheng-Li Zhu Zhao-Yang Li Zhen-Duo Cui Hui Jiang Paul KChu shui-lin wu Biomedical Materials Engineering Research Center Hubei Key Laboratory of Polymer MaterialsMinistry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science&EngineeringHubei UniversityWuhanChina School of Materials Science&Engineering Peking UniversityBeijingChina School of Materials Science&Engineering The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjinChina School of Health Science&Biomedical Engineering Hebei University of TechnologyTianjinChina Department of Physics City University of Hong KongHong KongChina Department of Materials Science and Engineering City University of Hong KongHong KongChina Department of Biomedical Engineering City University of Hong KongHong KongChina

Recently,the issue of bacterial resistance has gotten worse because of the overuse of *** newborn superbacteria,such as vancomycin-resistant bacteria,were hard to kill,inspiring researchers to find new ways to kill the bacteria ***_(2) was used as an efficient photocatalyst for water split-ting and pollutant ***,the weak efficiency limited the application to solve the drug-resistance ***,the incorpora-tion of low-cost 0D carbon quantum dots(CQDs)and 2D graphene oxide(GO)was pursued to amplify the visible light absorption capabilities of TiO_(2) and thereby elevate its photocatalytic *** forming the heterogeneous interface of CQDs and TiO_(2),CQDs converted part of visible light into wave-length less than 400 nm using the up-conversion *** modification of CQDs enabled electrons to be easily transferred from the conduction band of CQDs to the conduction band of TiO_(2).Meanwhile,GO can act as an electron acceptor,reduce the recombination efficiency of holes and electrons,and transfer the photogenerated electrons in the redox reaction in the heterogeneous *** of the excellent absorption of GO,TiO_(2)/CQDs/GO reached 57.8℃after 20 min irradiation under 1.5 times sunlight,which provided a prerequisite for photodynamic antibacterial therapy/photothermal antibacterial therapy synergistic antibacterial ***_(2)/CQDs/GO possessed an anti-bacterial efficiency as high as 99.3%toward Staphylococcus aureus which has a bright future in disinfection in vivo and medical devices as well as water sterilization.

关键词： anitbacterial carbon quantum dots graphene oxide heterojunction TiO_(2)

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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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Highly efficient nanoporous CoBP electrocatalyst for hydrogen evolution reaction

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Rare Metals 2021年第5期40卷 1031-1039页

作者： Hui-Lan Guang Sheng-Li Zhu Yan-Qin Liang shui-lin wu Zhao-Yang Li shui-Yuan Luo Zhen-Duo Cui Akihisa Inoue School of Materials Science and Engineering Tianjin UniversityTianjin 300350China School of Materials Science and Engineering Lanzhou Jiaotong UniversityLanzhou 730070China College of Chemistry Engineering and Materials Science Quanzhou Normal UniversityQuanzhou 362000China International Institute of Green Materials Josai International UniversityTogane 283-8555Japan Department of Physics King Abdulaziz UniversityJeddah 22254Saudi Arabia

Water splitting is an environment friendly and efficient way to produce *** efficient and low-cost non-noble metal catalysts play an important role in hydrogen evolution reaction(HER).Dealloying is a simple method to prepare three-dimensional self-supporting nanoporous materials without conductive supports and *** this work,we prepared self-supporting nanoporous CoBP electrocatalyst by dealloying *** influence of the synergistic effect of nonmetallic elements on catalytic activity was *** synergistic electronic effect of Co,B and P atoms on the surface optimizes the H atoms desorption and results in superior HER *** bi-continuous structure of nanoporous CoBP provides more active area and favors of electron and electrolyte *** nanoporous CoBP with the B/P atomic ratio of 1/3 exhibits low overpotential of 42 mV at 10 mA·cm^(-2),small Tafel slope of 39.8 mV·dec-1 and good long-term stability with no performance decrease for 20 h in alkaline solution.

关键词： Hydrogen evolution reaction Nanoporous Self-supporting electrocatalyst Co-B-P alloy Dealloying

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Editorial for rare metals, special issue on biomedical metal implants

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Rare Metals 2019年第6期38卷 475-475页

作者： shui-lin wu Yan Li School of Materials Science and Engineering Tianjin UniversityTianjin 300072China School of Materials Science and Engineering Beihang UniversityBeijing 100191China

Biomedical metal materials such as titanium, magnesium and their alloys have been widely studied as orthopedic implants or cardiovascular stents due to their desirable mechanical properties and excellent ***, these metal implants still exist some problems in practical application including bacterial infection, lack of bioactivity, and uncontrolled corrosion behaviors. Toaddress these problems, the performance of these metallicimplants can be improved through surface modification andincorporating alloying elements into raw materials ofimplants.

关键词： Editorial for rare metals special issue on biomedical metal implants

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ALD-induced TiO_(2)/Ag nanofilm for rapid surface photodynamic ion sterilization

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Rare Metals 2022年第12期41卷 4138-4148页

作者： Peng-Fei Cai Jun Li Xin-Bao wu Zhao-Yang Li Jie Shen Jing-Jun Nie Zhen-Duo Cui Da-Fu Chen Yan-Qin Liang Sheng-Li Zhu shui-lin wu School of Materials Science&Engineering The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China Department of Orthopedic Trauma Beijing Jishuitan HospitalBeijing 100035China Shenzhen Key Laboratory of Spine Surgery Department of Spine SurgeryPeking University Shenzhen HospitalShenzhen 518041China Laboratory of Bone Tissue Engineering Beijing Laboratory of Biomedical MaterialsBeijing Research Institute of Orthopaedics and TraumatologyBeijing Jishuitan HospitalBeijing 100035China

The daily life of people in the intelligent age is inseparable from electronic device,and a number of bacteria on touch screens are increasingly threatening the health of ***,a photocatalytic TiO_(2)/Ag thin film was synthesized on a glass by atomic layer deposition and subsequent in situ ***-visible(UV-Vis)spectra showed that this film can harvest the simulated solar light more efficiently than that of pristine TiO_(2).The antibacterial tests in vitro showed that the antibacterial efficiency of the TiO_(2)/Ag film against *** and *** was 98.2%and 98.6%,under visible light irradiation for 5 *** underlying mechanism was that the in-situ reduction of Ag on the surface of TiO_(2)reduced the bandgap of TiO_(2)from 3.44 to 2.61 eV due to the formation of Schottky heterojunction at the interface between TiO_(2)and ***,TiO_(2)/Ag can generate more reactive oxygen species for bacterial inactivation on the surface of electronic *** importantly,the TiO_(2)/Ag film had great biocompatibility with/without light *** platform not only provides a more convenient choice for the traditional antibacterial mode but also has limitless possibilities for application in the field of billions of touch screens.

关键词： Antibacterial Photoresponsive Photodynamic Surface sterilization Atomic layer deposition(ALD)

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Electrodeposition of self-supported NiMo amorphous coating as an efficient and stable catalyst for hydrogen evolution reaction

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Rare Metals 2022年第8期41卷 2624-2632页

作者： Fu-Hang Yuan Mohammad-Reza Mohammadi Li-Li Ma Zhen-Duo Cui Sheng-Li Zhu Zhao-Yang Li shui-lin wu Hui Jiang Yan-Qin Liang School of Materials Science and Engineering Tianjin UniversityTianjin300072China Department of Physics University of Sistan and BaluchestanZahedan98167-45845Iran

NiMo-based materials have been identified as potential candidates of Pt/C electrocatalysts for hydrogen evolution reaction(HER)due to appropriate binding energy to hydrogen,and good resistance to corrosive ***,little work has been carried out to enhance the catalytic performance in large-scale water-alkali *** NoMo amorphous coating,as a highefficient and cost-effective catalyst toward HER,was synthesized by a facile electrodeposition strategy in this *** effects of the pH value of electrolyte on the structure and HER activity of NiMo coating were *** as-prepared NiMo_((pH10))exhibited the highest HER activity with overpotentials of 63.9 and 157.1 mV(***,with 80%potential drop due to electrical resistance(iR)compensation)at the current density of-10 mA·cm^(-2)and-100 mA·cm^(-2).This NiMo_((pH10))coating also had excellent long-term durability of up to100 h stable operation under the constant current density of-100 mA·cm^(-2).The rapid HER kinetics and outstanding endurance can be ascribed to the NiMo compact coating with amorphous structures as well as good contact between NiMo coating and Ni foam substrate,endowing it grand feasibility in practical industrial applications.

关键词： Electrodeposition NiMo coating Hydrogen evolution reaction(HER) Alkaline water electrolysis

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Flower-like CuS/graphene oxide with photothermal and enhanced photocatalytic effect for rapid bacteria-killing using visible light

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Rare Metals 2022年第2期41卷 639-649页

作者： Rui Lv Yan-Qin Liang Zhao-Yang Li Sheng-Li Zhu Zhen-Duo Cui shui-linwu School of Materials Science&Engineering the Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of ChinaTianjin UniversityTianjin 300072China The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China Tianjin UniversityTianjin 300072China

Pathogenic bacteria have been threatening the daily life of human *** effective methods without causing drug-resistance of bacteria need to be developed to fight against these ***,flower-like CuS/-graphene oxide(GO)hybrids have been successfully synthesized via simple one-pot hydrothermal *** worked as an excellent electron acceptor to transport the photogenerated electrons from CuS,which can suppress the recombination of hole–electron pairs efficiently,thus enhancing the photocatalytic *** addition,the morphology of CuS and GO with high specific surface area and the increased defect in GO also improved photocatalytic performance of the *** to the synergy of photothermal,enhanced photocatalytic effect and released Cu ions,CuS/GO exhibited outstanding antibacterial efficacy under visible light irradiation for 15 ***,the hybrid showed great biocompatibility to L929 ***,the synthesized CuS/GO would be a promising antibacterial material for daily life including rapid water disinfection and wounds sterilization.

关键词： Antibacterial Photocatalytic CuS Graphene oxide Photoresponsive

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Photothermal-controlled sustainable degradation of protective coating modified Mg alloy using near-infrared light

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Rare Metals 2021年第9期40卷 2538-2551页

作者： Zhi-Xin Han Xiang-Mei Liu Lei Tan Zhao-Yang Li Yu-Feng Zheng Kelvin Wai-Kwok Yeung Zhen-Duo Cui Yan-Qin Liang Sheng-Li Zhu shui-lin wu Hubei Key Laboratory of Polymer Materials Ministry-of-Education Key Laboratory for the Green Preparation and Application of Functional MaterialsSchool of Materials Science&EngineeringHubei UniversityWuhan 430062China The Key Laboratory of Advanced Ceramics and Machining Technology by the Ministry of Education of China School of Materials Science&EngineeringTianjin UniversityTianjin 300072China State Key Laboratory for Turbulence and Complex System Department of Materials Science and EngineeringCollege of EngineeringPeking UniversityBeijing 100871China Department of Orthopaedics and Traumatology Li Ka Shing Faculty of MedicineThe University of Hong KongPokfulam 999077Hong KongChina

Controlling the corrosion rate is critical for practical applications of Mg-based alloys. In this work, we constructed a protective coating of hybrid polycaprolactone(H-PCL)/indocyanine green(ICG) on AZ31 Mg alloy,whose degradation rate was controlled by 808-nm nearinfrared(NIR) light irradiation. The corrosion behaviors of H-PCL/ICG coated Mg alloys were systematically investigated by potentiodynamic polarization tests, electrochemical impedance spectroscopy(EIS) and hydrogen evolution experiments. The results disclosed that the H-PCL/ICG composite coating could effectively protect Mg alloy from corroding without NIR light irradiation. In contrast, under 808-nm NIR light irradiation, the corrosion resistance of this composite coating was decreased significantly, i.e., the corrosion current density(i_(corr))increasedfrom(8.81 ± 1.068) 9 10^(-8) to(1.22 ± 0.545) 9 10^(-6) A·cm^(-2). This is because the component of ICG in the coating was excited to produce heat locally, which triggered the glass transition temperature(T_(g)) of H-PCL in the coating, resulting in the motion of the molecular chain segment. Consequently, the electrolytes penetrated the coating and corroded the Mg substrate. In vitro biological experiment indicated that the synthesized coating exhibited good ***, these findings will provide a new strategy for designing novel photoresponsive coatings to remotely adjust the degradation rate of biodegradable metals for biomedical applications.

关键词： Magnesium Corrosion Coating Photoresponsive Surface modification

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Ballistic performances of the hourglass lattice sandwich structures under high-velocity fragments

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Defence Technology（防务技术） 2024年第1期31卷 312-325页

作者： He-xiang wu Jia Qu lin-zhi wu Key Laboratory of Advanced Ship Materials and Mechanics College of Aerospace and Civil EngineeringHarbin Engineering UniversityHarbin150001China School of Civil Engineering Northeast Forestry UniversityHarbin150040China

In this paper,the numerical simulation method is used to study the ballistic performances of hourglass lattice sandwich structures with the same mass under the vertical incidence of *** is paid to elucidating the influences of rod cross-section dimensions,structure height,structure layer,and rod inclination angle on the deformation mode,ballistic performances,and ability to change the ballistic direction of *** results show that the ballistic performances of hourglass lattice sandwich structures are mainly affected by their structural *** this respect,structural parameters optimization of the hourglass lattice sandwich structures enable one to effectively improve their ballistic limit velocity and,consequently,ballistic performances.

关键词： Hourglass lattice sandwich structures Ballistic performances high-velocity Finite element analysis

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