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cus nanoenzyme against bacterial infection by in situ hydroxyl radical generation on bacteria surface

Rare Metals 2023年第6期42卷 1899-1911页

作者： Zhao Li Cheng-Jia Xie Xiao-Wei Ren Qun Zhang Bao-Jin Ma Department of Tissue Engineering and Regeneration School and Hospital of StomatologyCheeloo College of MedicineShandong University&Shandong Key Laboratory of Oral Tissue Regeneration&Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration&Shandong Provincial Clinical Research Center for Oral DiseasesJinan250012China Jinan Food and Drug Inspection and Testing Center Jinan250010China

Nanoenzyme-mediated antibacterial strategies have been widely exploited to overcome the shortcomings(such as drug resistance and mild-to-severe side effects) of antibiotic *** peroxidase-like activity of nanoenzymes possesses great potential against bacterial infection by the generation of hydroxyl radical(·OH) in the specific ***,the lifetime of-OH is extremely short,and a large amount of the ·OH generated within the infection microenvironment cannot come into contact with bacteria quickly enough,thus resulting in low treatment ***,chitosan-oligosaccharide-modified cus nanoparticles possessing positive charges(Pcus NPs) were prepared using a one-pot *** NPs exhibited efficient peroxidase-like ***,the Pcus NPs can combine with bacteria via electrostatic *** direct contact between the Pcus NPs and bacteria enabled the generation of ·OH in situ on the bacterial surface,ultimately leading to a high antibacterial efficacy at a low concentration in the presence of H_(2)O_(2).At an effective antibacterial concentration,the Pcus NPs exhibited high ***,in vivo results revealed that Pcus NPs not only decreased the size of abscesses but also reduced inflammation and promoted collagen fiber ***,Pcus NPs possess great potential against bacterial infection via in situ ·OH generation based on electrostatic attraction.

关键词： Antibacterial cus Nanoenzyme In situ ·OH generation Electrostatic attraction

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Preparation of cus/BiVO4 thin film and its efficacious photoelectrochemical performance in hydrogen generation

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Rare Metals 2019年第5期38卷 428-436页

作者： Yuan Li Yue Yang Jing-Wei Huang Lei Wang Hou-De She Jun-Bo Zhong Qi-Zhao Wang College of Chemistry and Chemical Engineering Northwest Normal UniversityLanzhou 730070China State Key Laboratory of Petroleum and Petrochemical Pollution Control and Processing Lanzhou Petrochemical Research CenterPetroChinaLanzhou 730060China Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan Sichuan University of Science and EngineeringZigong 643000China School of Environmental Science and Engineering Chang'an UniversityXi'an 710064China

To drive photoelectrochemical water splitting on porous BiVO4 photoanode,we herein prepared a carnationlike cus powder by hydrothermal method and then loaded it onto BiVO4 ***,the cus/BiVO4 composite not only presents a higher photocurrent response value at 1.23 V versus RHE(reversible hydrogen electrode)than pure BiVO4 electrode under visible light irradiation,but also exhibits an excellent photoelectrochemical hydrogen production activity in comparison with either the BiVO4 or the *** high ameliorated performance of cus/BiVO4 composite may be due to the strong absorption of visible light and an effective abatement in combination of *** results demonstrate an effective potential approach to design and construct efficient photoelectrochemical(PEC)systems.

关键词： Carnation-like cus powders cus/BiVO4 photoanode p-n-type heterostructure Photoelectrochemical hydrogen generation

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Synthesis of cus nanoparticles decorated Ti3C2Tx MXene with enhanced microwave absorption performance

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Progress in Natural Science:Materials International 2020年第3期30卷 343-351页

作者： Guangzhen Cui Linbo Wang Ling Li Wei Xie Guangxin Gu Key Laboratory of Science and Technology on Electromagnetic Environmental Effects and Electro-optical Engineering The Army Engineering University of PLA College of Pharmacy Chengdu University of TCM The First Scientific Research Institute of Wuxi Academy for Engineering and Technology Fudan University

MXene,a novel two-dimensional （2D） multi-layer material,has drawn unusual interest as the microwave absorbers for electromagnetic energy *** MXene-based heterostructure composites via optimizing structure is an effective strategy to endow MXene materials with high-performance microwave *** study reports the fabrication and investigation of the microwave absorption performance of a sandwich-like cus/Ti3C2TxMXene composites prepared by loading cus nanoparticles onto 2D Ti3C2Txvia a solvothermal *** morphology and electromagnetic absorption properties of this composite were investigated and the results demonstrated that the cus/Ti3C2Txcomposite with a heterolayered architecture displayed superior microwave absorption *** a 35 wt%filler loading in the paraffin matrix,the minimum reflection loss value reached-45.3 dB at a frequency of 7.3 GHz and the effective absorption bandwidth achieved a value as high as 5.2 GHz with a thickness of 2.0 *** enhanced microwave absorption performances can be ascribed to the cooperation of the conductive network,interface polarization,dipole polarization,multiple reflection and ***,the synthesized cus/Ti3C2TxMXene composites offer an efficient foundation for the design and utilization of other lightweight microwave absorbers.

关键词： cus Nanoparticles MXene Sandwich Heterolayered architecture

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Natural sunlight irradiated flower-like cus synthesized from DMF solvothermal treatment

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Frontiers of Materials Science 2016年第3期10卷 290-299页

作者： Wei ZHAO Zihao WANG Lei ZHOU Nianqi LIU Hongxing WANG School of Materials Science and Engineering Tianjin Chengjian University Tianjin 300384 China

Three-dimensional cus hierarchical crystals with high catalytic activity had been successfully fabricated using a facile solvothermal process, The cus microparticles showed different flower-like morphology and good dispersion by optimizing reaction conditions. It was found that using N,N-dimethylformamide （DMF） as the solvent reagent in the proper temperature conditions was favorable for the growth of hierarchically structured cus. The hexagonal flower-like cus synthesized at 170℃ for 60 min displayed broad-spectrum photocatalytic properties under ultraviolet （UV） and visible irradiation. The as-prepared cus crystals exhibited good performance to decolorize methylene blue （MB） solution under visible light irradiation. The total organic carbon （TOC） removal of rhodamine B （RhB） solution was nearly 60% after 5 h of the natural sunlight irradiation, and the property was stable after testing over four recycles, demonstrating a potential application in waster water treatment.

关键词： photocatalysis cus hierarchical structure natural sunlight irradiation

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Elastic Buffering Layer on cus Enabling High-Rate and Long-Life Sodium-Ion Storage

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Nano-Micro Letters 2022年第12期14卷 27-39页

作者： Yuanhua Xiao Feng Yue Ziqing Wen Ya Shen Dangcheng Su Huazhang Guo Xianhong Rui Liming Zhou Shaoming Fang Yan Yu Key Laboratory of Surface and Interface Science and Technology Zhengzhou University of Light IndustryZhengzhou 450002People’s Republic of China Institute of Nanochemistry and Nanobiology School of Environmental and Chemical EngineeringShanghai UniversityShanghai 200444People’s Republic of China Institute School of Materials and Energy Guangdong University of TechnologyGuangzhou 510006People’s Republic of China Hefei National Research Center for Physical Sciences at the Microscale Department of Materials Science and EngineeringNational Synchrotron Radiation LaboratoryCAS Key Laboratory of Materials for Energy ConversionUniversity of Science and Technology of China.HefeiAnhui 230026People’s Republic of China

The latest view suggests the inactive core,surface pulverization,and poly sulfide shuttling effect of metal sulfides are responsible for their low capacity and poor cycling performance in sodium-ion batteries(SIBs).Whereas overcoming the above problems based on conventional nanoengineering is not efficient *** this work,erythrocyte-like cus microspheres with an elastic buffering layer of ultrathin poly aniline(PANI) were synthesized through one-step selfassembly growth,followed by in situ polymerization of *** cus@PANI is used as anode electrode in SIBs,it delivers high capacity,ultrahigh rate capability(500 mAh gat 0.1 A g,and 214.5 mAh gat 40 A g),and superior cycling life of over 7500 cycles at 20 A g.A series of in/ex situ characterization techniques were applied to investigate the structural evolution and sodium-ion storage *** PANI swollen with electrolyte can stabilize solid electrolyte interface layer,benefit the ion transport/charge transfer at the PANI/electrolyte interface,and restrain the size growth of Cu particles in confined ***,finite element analyses and density functional simulations confirm that the PANI film effectively buffers the volume expansion,suppresses the surface pulverization,and traps the poly sulfide.

关键词： cus Elastic buffering layer Polyaniline Long life Sodium-ion batteries

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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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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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Solubility Product for cus and Cu_2S in Iron

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Journal of Iron and Steel Research International 2010年第8期17卷 36-38页

作者： QI Hai-quan YONG Qi-long Kunming University of Science and Technology Kunming 650093YunnanChina Central Iron and Steel Research Institute Beijing 100081China

The solubility product formulae of cus and Cu2S in ferrite and in austenite have been obtained via thermodynamic method,according to the formation energy of cus and Cu2S and the solubility formulae of elements Cu and S in ferrite and in *** comparing the solubility products for cus and Cu2S in iron,it is found that Cu2S instead of cus should be precipitated in iron due to competitative precipitation,in the view of *** formulae of cus and Cu2S deduced from thermodynamic method would play an important role in related theoretical research and practical production.

关键词： cus Cu2S solubility product ferrite austenite

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Low-temperatures synthesis of cus nanospheres as cathode material for magnesium second batteries

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Journal of Magnesium and Alloys 2023年第1期11卷 192-200页

作者： Qin Zhang Yaobo Hu Jun Wang Fusheng Pan College of Materials Science and Engineering Chongqing UniversityChongqing 400044China National Engineering Research Center for Magnesium Alloys Chongqing 400044China

Rechargeable magnesium batteries(RMBs),as one of the most promising candidates for efficient energy storage devices with high energy,power density and high safety,have attracted increasing ***,searching for suitable cathode materials with fast diffusion kinetics and exploring their magnesium storage mechanisms remains a great *** S submicron spheres,made by a facile low-temperature synthesis strategy,were applied as the high-performance cathode for RMBs in this work,which can deliver a high specific capacity of 396mAh g^(-1)at 20 mA g^(-1) and a remarkable rate capacity of 250 m Ah g^(-1)at 1000 mA g^(-1).The excellent rate performance can be assigned to the nano needle-like particles on the surface of Cu S submicron spheres,which can facilitate the diffusion kinetics of Mg^(2+).Further storage mechanism investigations illustrate that the Cu S cathodes experience a two-step conversion reaction controlled by diffusion during the electrochemical reaction *** work could make a contribution to the study of the enhancement of diffusion kinetics of Mg2+and the reaction mechanism of RMBs.

关键词： Magnesium second batteries Cathode material cus Submicron spheres Low-temperature synthesis.

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Preparation of a wearable K-PAN@cus composite fabric with excellent photothermal/electrothermal properties

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Frontiers of Materials Science 2023年第4期17卷 65-79页

作者： Jintao Zhang Qi Zhang Wei Pan Yu Qi Yajie Qin Zebo Wang Jiarui Zhao International Joint Laboratory of New Textile Materials and Textiles of Henan Province Zhongyuan University of TechnologyZhengzhou 450007China Huanghe Science and Technology College Zhengzhou 450006China School of Materials and Chemical Engineering Zhongyuan University of TechnologyZhengzhou 451191China College of Textiles Zhongyuan University of TechnologyZhengzhou 451191China

Electrospun nanofibers with highly efficient photothermal/electrothermal performance are extremely popular because of their great potential in wearable ***,the lack of necessary wearable properties such as high mechanical strength and quick response of electrospun micro/nanofibers seriously affects their practical *** this work,a technical route combining electrospinning and surface modification technology is *** 3-triethoxysilylpropylamine-polyacrylonitrile@copper sulfide(K-PAN@cus)composite fabric was achieved by modifying the original electrospinning PAN fiber and subsequently loading cus *** results show that the break strength of the K-PAN@cus fabric was increased by 10 times compared to that of the original PAN@cus ***,the saturated temperature of the K-PAN@cus fabric heater could reach 116℃within 15 s at a relatively low voltage of 3 V and 120.3℃within 10 s under an infrared therapy lamp(100 W).In addition,due to its excellent conductivity,such a unique structural design enables the fiber to be closely attached to the human skin and helps to monitor human *** K-PAN@cus fabric shows great potential in wearable heaters,hyperthermia,all-weather thermal management,and in vitro physical therapy.

关键词： electrospinning strain sensor electrothermal/photothermal conversion cus wearable fabric

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