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In Vitro Angiogenic Behavior of HUVECs on Biomimetic SF/SA Composite Scaffolds

Journal of Wuhan University of technology(materials Science) 2021年第3期36卷 456-464页

作者： KOMBO Omar Ramadhan WANG Xinyu SHEN Ying LIU Jiawei DONG Xianzhen SHAO Qi LONG Yanpiao DONG Kuo BAKHET Shahd Fateh El-Rahman Elkhider LI Binbin State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Biomedical Materials and Engineering Research Center of Hubei Province Wuhan 430070China

The 60Fc and 70Fc SF/SA blend scaffolds were prepared to mimic the functions of the native ECM for skin *** Umbilical Vein Endothelial Cells(HUVECs)were used to examine the cell cytotoxicity,adhesion,growth factors secretion and the gene expression of associated angiogenic *** proliferation,adhesion and live-dead analyses showed that HUVECs could better attach,grow,and proliferate on the 70Fc scaffolds compared with 60Fc scaffolds and unmodified ***,the 70Fc scaffolds showed higher levels of specific angiogenic proteins and genes expression as *** study suggests that the involvement of higher composition of SF(about 70%)than that of SA on the blended scaffolds could be advantageous as it is more suitable to promote angiogenesis,which is potential for vascularization during skin repair.

关键词： vascularization scaffold HUVECs tissue engineering

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Single‑Atom Catalysts:Advances and Challenges in Metal‑Support Interactions for Enhanced Electrocatalysis

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Electrochemical Energy Reviews 2022年第1期5卷 145-186页

作者： Yang Mu Tingting Wang Jian Zhang Changgong Meng Yifu Zhang Zongkui Kou School of Chemical Engineering Dalian University of TechnologyDalian 116024LiaoningChina State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina School of Chemistry and Chemical Engineering Huazhong University of Science and TechnologyWuhan 430074HubeiChina

Single-atom catalysts(SACs),which contain a single metal atom supported on a well-confined substrate,are among the most promising heterogeneous catalysts owing to their unique advantages,such as high intrinsic activity and selectivity,tunable bonds and coordination,abundant metal-containing active sites,and atomic *** metal-support interactions(MSIs)in SACs exert a substantial influence on the catalytic properties,gaining a profound understanding and recognition of catalytic reactions depends greatly on investigating MSIs both experimentally and ***,the engineer-ing and modulation of MSIs are regarded as one of the most efficient methods to rationally design SACs with disruptively enhanced catalytic *** this review,we track the recent advances in SACs from an MSI *** then discuss the existing MSIs in SACs and elucidate the significant role of strong MSIs in catalytic properties and *** chal-lenges hindering the rational design of supported SACs with strong MSIs,which are currently still far from being completely understood and overcome,are *** addition,the correlation between strong MSIs and electrocatalytic activities in SACs,including an outlook to increase our understanding of MSIs,is ***,the present review provides some perspectives and an in-depth understanding of strong MSIs to advance high-performing SACs.

关键词： Metal-support interaction Single-atom catalysts Electrocatalysis ORR and OER HER and HOR

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High-temperature ultra-strength of dual-phase Re_(0.5)MoNbW(TaC)_(0.5) high-entropy alloy matrix composite

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Journal of materials Science & technology 2021年第25期84卷 1-9页

作者： Qinqin Wei Guoqiang Luo RongTu Jian Zhang Qiang Shen Yujie Cui Yunwei Gui Akihiko Chiba State Key Lab of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan430070China Institute for Materials Research Tohoku UniversitySendai980-8577Japan

The dual-phase Re_(0.5)MoNbW(TaC)_(0.5) composite,consisting of refractory body-centered cubic(BCC)highentropy alloy and carbide with many fine eutectic structures,was successfully synthesized by arc *** phase stability,high-temperature mechanical properties and strengthening mechanism of the ascast composite were *** microstructure of the composite remained stable after annealing at 1300℃for 168 *** exhibited remarkably high-temperature strength,yield strength~901 MPa,and true ultimate compressive strength~1186 MPa at 1200℃.The BCC phase and carbide exhibited a semi-coherent interface with good bonding after severe deformation at 1200℃.The dipolar dislocation walls in BCC phase,restricted dynamic interaction between defects in carbide,and the pinning effect of semi-coherent interface offered effective strengthening effects.

关键词： High-entropy alloy Composite Eutectic structure Strength Strengthening mechanism

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Total conversion of centimeter-scale nickel foam into single atom electrocatalysts with highly selective CO_(2)electrocatalytic reduction in neutral electrolyte

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Nano Research 2023年第2期16卷 2003-2010页

作者： Qikui Fan Pengfei Gao Shan Ren Yunteng Qu Chuncai Kong Jian Yang Yuen Wu Ministry of Education Key Laboratory for Non-equilibrium Synthesis and Modulation of Condensed Matter Shaanxi Province Key Laboratory of Advanced Functional Materials and Mesoscopic PhysicsSchool of PhysicsXi’an Jiaotong UniversityXi’an 710049China Shenzhen Key Laboratory of Special Functional Materials Guangdong Research Center for Interfacial Engineering of Functional MaterialsCollege of Materials Science and EngineeringShenzhen UniversityShenzhen 518060China Northwest Institute of Nuclear Technology Xi’an 710024China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China State Key Laboratory of Photoelectric Technology and Functional Materials International Collaborative Center on Photoelectric Technology and Nano Functional MaterialsInstitute of Photonics and Photon-TechnologyNorthwest UniversityXi’an 710069China Department of Chemistry iChEM(Collaborative Innovation Center of Chemistry for Energy Materials)University of Science and Technology of ChinaHefei 230026China

To improve the atomic utilization of metals and reduce the cost of industrialization,the one-step total monoatomization of macroscopic bulk metals,as opposed to nanoscale metals,is *** this study,we used a thermal diffusion method to directly convert commercial centimeter-scale Ni foam to porous Ni single-atom-loaded carbon nanotubes(CNTs).As expected,owing to the coating of single-atom on porous,highly conductive CNT carriers,Ni single-atom electrocatalysts(Ni-SACs)exhibit extremely high activity and selectivity in CO_(2)electroreduction(CO_(2)RR),yielding a current density of>350 mA/cm^(2),a selectivity for CO of>91%under a flow cell configuration using a 1 M potassium chloride(KCl)*** on the superior activity of the Ni-SACs electrocatalyst,an integrated gas-phase electrochemical zero-gap reactor was introduced to generate a significant amount of CO current for potential practical *** overall current can be increased to 800 mA,while maintaining CO Faradaic efficiencies(FEs)at above 90%per unit *** findings and insights on the active site transformation mechanism for macroscopic bulk Ni foam conversion into single atoms can inform the design of highly active single-atom catalysts used in industrial CO_(2)RR systems.

关键词： Ni single atom electrocatalyst CO_(2)electroreduction to CO neutral electrolyte thermal diffusion

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Yb:CaF_(2)-YF_(3)transparent ceramics ultrafast laser at dual gain lines

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Chinese Physics B 2022年第11期31卷 336-340页

作者： Xiao-Qin Liu Qian-Qian Hao Jie Liu Dan-Hua Liu Wei-Wei Li Liang-Bi Su Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201899China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049China

Yb^(3+):CaF_(2)–YF_(3)transparent ceramics with excellent optical quality was successfully fabricated by hot-pressed *** laser properties of this ceramics were investigated for the first *** diode(LD)was applied as the pump source to generate a dual-wavelength mode-locked(ML)*** maximum average output power was 310 mW,which represents the highest output power of ultrafast calcium fluoride ceramic *** spectrum separated at 1048.9 nm and 1049.7 nm with a total pulse duration of 8.9 *** interval period between the beating signals was about 4.3 ps,corresponding to a 0.23 THz beat pulse repetition *** results demonstrate its potential in producing dual-wavelength ultrashort *** Yb^(3+):CaF_(2)–YF_(3)ceramics with low-cost and short-preparation period are ideal candidate materials for ultrafast lasers.

关键词： transparent ceramics passively mode-locking dual-wavelength laser

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Structural properties and electrochemical performance of different polymorphs of Nb_(2)O_(5) in magnesium-based batteries

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Journal of Energy Chemistry 2021年第7期30卷 586-592页

作者： Cunyuan Pei Yameng Yin Xiaobin Liao Fangyu Xiong Qinyou An Mengda Jin Yan Zhao Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina State Key Laboratory of Silicate Materials for Architectures International School of Materials Science and EngineeringWuhan University of TechnologyWuhan 430070HubeiChina Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen ValleyFoshan 528200GuangdongChina

The selection of the most suitable crystal structure for ions storage and the investigation of the corresponding reaction mechanism is still an ongoing challenge for the development of Mg-based *** this article,high flexible graphene network supporting different crystal structures of Nb2 O5(TTNb_(2)O_(5)@rGO and T-Nb_(2)O_(5)@rGO) are successfully synthesized by a spray-drying-assisted *** three-dimensional graphene framework provides high conductivity and avoids the aggregation of Nb2 O5 *** employed as electrode materials for energy storage applications,TT-Nb_(2)O_(5) delivers a higher discharge capacity of 129.5 mAh g^(-1), about twice that of T-Nb_(2)O_(5) for Mg-storage,whereas,T-Nb_(2)O_(5) delivers a much higher capacity(162 mAh g^(-1)) compared with TT-Nb_(2)O_(5)(129 mAh g^(-1)) for *** investigations reveal the Mg intercalation mechanism and lower Mg^(2+) migration barriers,faster Mg^(2+) diffusion kinetics of TT-Nb_(2)O_(5) as cathode material for Mg-storage,and the faster Li+ diffusion kinetics,shorter diffusion distance of T-Nb_(2)O_(5) as cathode material for *** work demonstrates that exploring the proper crystal structure of Nb2 O5 for different ions storage is necessary.

关键词： Crystal structure Nb_(2)O_(5) Mg-ion storage Li-ion storage Diffusion kinetics

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Textured Asymmetric Membrane Electrode Assemblies of Piezoelectric Phosphorene and Ti_(3)C_(2)T_(x)MXene Heterostructures for Enhanced Electrochemical Stability and Kinetics in LIBs

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Nano-Micro Letters 2024年第4期16卷 394-414页

作者： Yihui Li Juan Xie Ruofei Wang Shugang Min Zewen Xu Yangjian Ding Pengcheng Su Xingmin Zhang Liyu Wei Jing‑Feng Li Zhaoqiang Chu Jingyu Sun Cheng Huang Volta and DiPole Materials Labs College of EnergySoochow Institute for Energy and Materials InnovationS(SIEMIS)Key Laboratory of Advanced Carbon Materials and Wearable Energy Technologies of Jiangsu ProvinceKey Laboratory of Core Technology of High Specific Energy Battery and Key Materials for Petroleum and Chemical IndustrySoochow UniversitySuzhou 215006People’s Republic of China School of Materials Science and Engineering Jiangsu UniversityZhenjiang 212013People’s Republic of China College of Underwater Acoustic Engineering Harbin Engineering UniversityHarbin 150001People’s Republic of China Shanghai Synchrotron Radiation Facility Shanghai Advanced Research InstituteShanghai Institute of Applied PhysicsChinese Academy of SciencesShanghai 201204People’s Republic of China State Key Laboratory of New Ceramics and Fine Processing School of Materials Science and EngineeringTsinghua UniversityBeijing 100084People’s Republic of China High Density Materials Technology Center for Flexible Hybrid Electronics Suzhou Institute of Electronic Functional Materials TechnologySuzhou Industrial Technology Research InstituteSuzhou 215151People’s Republic of China Institute of Advanced Materials and Institute of Membrane Science and Technology Jiangsu National Synergistic Innovation Center for Advanced MaterialsSuzhou Laboratory and Nanjing Tech UniversityNanjing 211816People’s Republic of China

Black phosphorus with a superior theoretical capacity(2596 mAh g^(-1))and high conductivity is regarded as one of the powerful candidates for lithium-ion battery(LIB)anode materials,whereas the severe volume expansion and sluggish kinetics still impede its applications in *** contrast,the exfoliated two-dimensional phosphorene owns negligible volume variation,and its intrinsic piezoelectricity is considered to be beneficial to the Li-ion transfer kinetics,while its positive influence has not been discussed ***,a phosphorene/MXene heterostructure-textured nanopiezocomposite is proposed with even phosphorene distribution and enhanced piezo-electrochemical coupling as an applicable free-standing asymmetric membrane electrode beyond the skin effect for enhanced Li-ion *** experimental and simulation analysis reveals that the embedded phosphorene nanosheets not only provide abundant active sites for Li-ions,but also endow the nanocomposite with favorable piezoelectricity,thus promoting the Li-ion transfer kinetics by generating the piezoelectric field serving as an extra *** waltzing with the MXene framework,the optimized electrode exhibits enhanced kinetics and stability,achieving stable cycling performances for 1,000 cycles at 2 A g^(-1),and delivering a high reversible capacity of 524 m Ah g^(-1)at-20℃,indicating the positive influence of the structural merits of self-assembled nanopiezocomposites on promoting stability and kinetics.

关键词： Phosphorene Nanopiezocomposite Piezo-electrochemical coupling Membrane electrode assembly Lithium-ion storage

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1800℃下具有优异高强度且含氧化物杂质的高熵二硼化物陶瓷

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Science China materials 2023年第5期66卷 2061-2070页

作者：柳洁杨青青邹冀王为民王新刚傅正义 State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China Hubei Longzhong Laboratory Xiangyang 441000China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 201899China

以硼热/碳热还原合成高熵二硼化物粉体为原料,在2000℃/单轴加压50 MPa条件下,经10分钟放电等离子烧结,成功制备了含有~2 vol%的氧化物和~1 vol%气孔的高熵(Ti_(0.2)Zr_(0.2)Nb_(0.2)Hf_(0.2)Ta_(0.2))B_(2)陶瓷(HEBs).经研究确认,其中... 详细信息

以硼热/碳热还原合成高熵二硼化物粉体为原料,在2000℃/单轴加压50 MPa条件下,经10分钟放电等离子烧结,成功制备了含有~2 vol%的氧化物和~1 vol%气孔的高熵(Ti_(0.2)Zr_(0.2)Nb_(0.2)Hf_(0.2)Ta_(0.2))B_(2)陶瓷(HEBs).经研究确认,其中残留氧化物是固溶少量硼和碳的m-(Hf,Zr)O_(2).室温下HEBs的弹性模量、维氏硬度和断裂韧性分别为508.5 GPa、17.7±0.4 GPa和4.2±0.2 MPa m^(1/2).烧结得到的HEBs具有优良的抗弯强度,特别是其高温强度.HEBs在室温、1600和1800℃下的四点抗折强度分别为400.4±47.0 MPa、695.9±55.9 MPa和751.6±23.2 MPa.对1800℃下断裂的HEBs样品进行了失效分析,在其拉伸和断裂面附近区域,仅在裂纹尖端和孔隙边缘发现了数量有限的位错线的存在,没有观察到位错运动的痕迹.本研究首次报道了高熵二硼化物陶瓷的高温强度,发现其强度直至1800℃并无衰减,并对其高温下的强韧化机制进行了有益的探讨.

关键词： borides high-entropy ceramics high-temperature strength mechanical properties microstructure

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Ni nanoparticles anchoring on vacuum treated Mo_(2)TiC_(2)T_(x) MXene for enhanced hydrogen evolution activity

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Chinese Journal of Structural Chemistry 2023年第10期42卷 37-45页

作者： Xiangyuan Zhao Jinjin Wang Jinzhao Kang Xiaomei Wang Hong Yu Cheng-Feng Du State Key Laboratory of Solidification Processing Center of Advanced Lubrication and Seal MaterialsSchool of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an710072China Northwestern Polytechnical University Chongqing Technology Innovation Center Chongqing400000China

MXenes with metal nanoparticles(NPs)immobilized on their surface are greatly desired for high-performance electrocatalysts,while the homogeneous nucleation and growth of NPs are still ***,a new method has been proposed for uniformly anchoring Ni NPs on the altered surficial *** pre-vacuum treatment on Mo_(2)TiC_(2)T_(x)(oMX)not only removes the surficial terminal groups but also induces surface oxidation ***,the nucleation and growth behaviors of Ni NPs on the oMX are altered in the hydrothermal reaction,which results in a grain-size reduction of more than 50%as well as homogeneous ***,the oxidized surface contributes a strong coupling between oMX and Ni NPs via Ni−O binging,which endows the Ni@oMX hybrid with the lowest overpotential and high durability over 75 h in 1 M KOH solution for electrocatalytic hydrogen evolution reaction(HER).

关键词： Nickel nanoparticles MXene Hybrid Electrocatalysts Hydrogen evolution reaction

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Ultrasensitive Frequency Shifting of Dielectric Mie Resonance near Metallic Substrate

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Research 2022年第4期2022卷 155-163页

作者： Chuanbao Liu Changxin Wang Junhong Chen Yanjing Su Lijie Qiao Ji Zhou Yang Bai School of Materials Science and Engineering University of Science and Technology BeijingBeijing 100083China Beijing Advanced Innovation Center for Materials Genome Engineering Institute for Advanced Materials and TechnologyUniversity of Science and Technology BeijingBeijing 100083China State Key Laboratory of New Ceramics and Fine Processing Tsinghua UniversityBeijing 100084China

Dielectric resonators on metallic surface can enhance far-field scattering and boost near-field response having promising applications in nonlinear optics and reflection-type ***,the dependence of gap size between dielectric resonator and metallic surface on Mie resonant frequency is complex and desires a comprehensive physical ***,we systematically study the effect of metallic substrate on the magnetic dipole(MD)resonant frequency at X-band by placing a high permittivity CaTiO_(3) ceramic block on metallic substrate and regulating their gap *** simulated and experimental results show that there are two physical mechanisms to codetermine the metallic substrate-induced MD *** greatly enhanced electric field pair in the gap and the coupling of MD resonance with its mirror image are decisive for small and large gaps,respectively,making the MD resonant frequency present an exponential blue shift first and then a slight red shift with increasing gap ***,we use the two mechanisms to explain different frequency shifting properties of ceramic sphere near metallic ***,taking advantage of the sharp frequency shifting to small gaps,the ceramic block is demonstrated to accurately estimate the thickness or permittivity of thin film on metallic substrate through a governing equation derived from the method of symbolic *** believe that our study will help to understand the resonant frequency shifting for dielectric particle near metallic substrate and give some prototypes of ultrasensitive detectors.

关键词： metallic ceramic shifting

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