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Three-dimensional lightweight melamine foams modified by MXene sheets and CoNi alloys towards multifunctional microwave absorption

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Nano Research 2025年第2期18卷 377-389页

作者： Nannan Wu Zhengying Shen Yitao Ma Zhizheng Wu Chuanxin Hou Sijie Guo Jian Tian Jiurong Liu School of Material Science and Engineering Shandong University of Science and TechnologyQingdao 266590China School of Mathematics and Systems Science Shandong University of Science and TechnologyQingdao 266590China School of Environmental and Material Engineering Yantai UniversityYantai 264005China Department of Chemical&Biomolecular Engineering University of TennesseeKnoxvilleTN 37996USA Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education and School of Materials Science and EngineeringShandong UniversityJinan 250061China

Taking the increasing issue of electromagnetic waves(EMW)pollution and the necessity for applications in extreme environments,there is a pressing requirement to create multifunctional microwave absorption materials(MAMs)to meet the current *** this work,we achieved the successful combination of MXene sheets and metal organic framework(MOFs)derived CoNi@C magnetic alloys onto the three dimensional(3D)melamine foam(MF)skeleton using vacuum impregnation and electrostatic self-assembly *** obtained MF@MXene/CoNi@C composite foams achieved outstanding MA performance,with an optimal reflection loss(RL)value of–24.1 dB and a maximum effective absorption bandwidth(EAB)of 6.88 GHz at a thickness of 1.68 mm,effectively covering the whole Ku *** superior MA performance is ascribed to the composite foams’multi-component architecture,distinctive 3D porous structure,and the synergistic impact of multiple loss ***,the MF@MXene/CoNi@C composite foams demonstrate exceptional photothermal conversion,thermal insulation,and infrared stealth capabilities,effectively coping with the demands of applications in extreme *** work serves as a valuable resource and source of inspiration for the development of lightweight broadband,multifunctional efficient MAMs.

关键词： multifunctional microwave absorption MXene thermal insulation infrared stealth

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Improving corrosion resistance of Zn-5Al(wt%)alloy by microalloying with samarium

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Journal of Rare Earths 2023年第10期41卷 1636-1644,I0006页

作者： Xiaochao Zhou Wei Shi Song Xiang College of Materials and Metallurgy Guizhou UniversityGuiyang550025China Key Laboratory for Mechanical Behavior and Microstructure of Materials of Guizhou Province Guiyang550025China National&Local Joint Engineering Laboratory for High-Performance Metal Structure Material and Advanced Manufacturing Technology Guiyang550025China

The role of the rare earth element Sm in as-cast Zn-5AI alloy was studied in this work.A three times higher improvement than the control group on corrosion resistance was found with rare earth Sm adding(0.15 wt%).By using an electron prove micro analyzer(EPMA),focused ion beam(FIB)and scanning Kelvin probe force microscopy(SKPFM)techniques,two main mechanisms of the premium performance of the Sm adding were *** was that the non-uniform nucleation and component undercooling induced by Sm adding,reduced theα-AI layer spacing thus improved the covering efficiency of the Al_(2)O_(3)*** other was that the dissolved Sm in the Zn/Al eutectic structure modulated the electron work function thus induced the attenuation of Volta potential *** experimental results show that when the addition of Sm is 0.15 wt%,the minimum Volta potential difference betweenα-AI andη-Zn phases is achieved,and excessive or deficient Sm addition will increase the Volta potential difference.

关键词： Zn-5Al Sm Rare earth elements SKPFM Volta potential

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Interfacial Modification,Electrode/Solid‑Electrolyte Engineering,and Monolithic Construction of Solid‑State Batteries

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Electrochemical Energy Reviews 2023年第1期6卷 320-356页

作者： Qirong Liu Qiqi Chen Yongbing Tang Hui‑Ming Cheng Advanced Energy Storage Technology Research Center Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina Faculty of Materials Science and Engineering/Institute of Technology for Carbon Neutrality Shenzhen Institute of Advanced TechnologyChinese Academy of SciencesShenzhen 518055GuangdongChina Shenzhen Key Laboratory of Energy Materials for Carbon Neutrality Shenzhen 518055GuangdongChina Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016LiaoningChina University of Chinese Academy of Sciences Beijing 100049China Nano Science and Technology Institute University of Science and Technology of ChinaSuzhou 215123JiangsuChina Key Laboratory of Advanced Materials Processing and Mold Ministry of EducationZhengzhou UniversityZhengzhou 450002HenanChina

Solid-state lithium-metal batteries(SLMBs)have been regarded as one of the most promising next-generation devices because of their potential high safety,high energy density,and simple packing ***,the practical applications of SLMBs are restricted by a series of static and dynamic interfacial issues,including poor interfacial contact,(electro-)chemical incompatibility,dynamic Li dendrite penetration,*** recent years,considerable attempts have been made to obtain mechanistic insight into interfacial failures and to develop possible strategies towards excellent interfacial properties for *** static and dynamic failure mechanisms at interfaces between solid electrolytes(SEs)and electrodes are comprehensively summarized,and design strategies involving interfacial modification,electrode/SE engineering,and the monolithic construction of SLMBs are discussed in ***,possible research methodologies such as theoretical calcu-lations,advanced characterization techniques,and versatile design strategies are provided to tackle these interfacial problems.

关键词： Solid-state batteries Interfacial issues Interfacial modification Electrode/solid-electrolyte engineering Monolithic construction

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Deep-ultraviolet nonlinear-optical crystal BaNa_(2)[PO_(3)(OH)]_(2) with large birefringence and strong second-harmonic-generation response

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Chinese Journal of Structural Chemistry 2023年第1期42卷 9-14页

作者： Yuanyu Yang Yao Guo Yi-Gang Chen Chengbo Li Xian-Ming Zhang Key Laboratory of Magnetic Molecules and Magnetic Information of Ministry of Education School of Chemistry and Material ScienceShanxi Normal UniversityTaiyuan030006China Henan Joint International Research Laboratory of Nanocomposite Sensing Materials School of Materials Science and EngineeringAnyang Institute of TechnologyAnyang455000China College of Chemistry&Chemical Engineering Key Laboratory of Interface Science and Engineering in Advanced MaterialMinistry of EducationTaiyuan University of TechnologyYingze WestTaiyuan030024China

Deep-ultraviolet(DUV,λ<200 nm)nonlinear-optical(NLO)crystals play a pivotal role in modern laser science and *** phosphates have been considered as fascinating candidates for DUV NLO crystal ***,how to generate both strong second-harmonic-generation(SHG)response and large birefringence for promising DUV NLO metal phosphates is a long-standing ***,a new DUV NLO metal phosphate,BaNa_(2)[PO_(3)(OH)]_(2),was successfully synthesized,which features a two-dimensional[NaPO_(3)(OH)]_(∞)alveolate layer alternately connected by highly asymmetric[PO_(3)(OH)]groups and NaO5 triangular ***_(2)[PO_(3)(OH)]_(2)can realize a good balance of DUV nonlinear properties covering short UV absorption edge less than 190 nm,strong SHG response with the magnitude of~1.2×benchmark KH_(2)PO_(4)(KDP),and the largest birefringence with the experimental value of 0.064@590±3 nm in reported alkaline/alkaline-earth metal phosphates,producing the shortest phase-matching output down to the wavelength of 164 *** research results show that BaNa_(2)[PO_(3)(OH)]_(2)crystal is a potential DUV NLO crystal material.

关键词： Nonlinear-optical Birefringence Structure Phosphates Optical properties

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Microemulsion Synthesis of Mesoporous β-tricalcium Phosphate Powder with a Novel System

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Journal of Wuhan University of technology(materials Science) 2022年第4期37卷 773-778页

作者： BIELEC Monikaq HUANG An XIA Yuhao DAI Honglian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyShenzhen 5180ooChina Shenzhen Institute of Wuhan University of Technology Wuhan 430070China

The synthesis of mesoporous β-tricalcium phosphate(β-TCP)powder was performed by using the microemulsion approach,with hexadecyltrimethyl ammonium bromide(CTAB)/cyclohexane/n-octyl alcohol microemulsion *** influences of different pH values and calcination temperatures on the phase composition of the β-TCP powder were *** in vitro proliferation of bone marrow mesenchymal stem cells(BMSCs)in the suspensions of β-TCP powders with meso-structure was *** phase composition,mesoporous structure,powder morphology,cell morphology and the optical density(OD)were characterized through X-ray diffraction(XRD),field emission scanning electron microscopy(FESEM),Fourier transform infrared(FTIR)spectroscopy,Nadsorption-desorption isotherms,inverted phase contrast microscopy and Multiskan spectrum,*** mesoporous β-TCP powder with specific surface area of 12.85 m^(2)/g and the average pore size 7.11 nm was obtained through the microemulsion approach(100 g/L CTAB/250 mL/L cyclohexane/250 mL/L n-octyl alcohol)with a controlled pH of 7.0,after calcinating the powder at 800℃.It was confirmed that mesoporous β-TCP powder benefits the activity of BMSCs more than the non-mesoporous β-TCP powder.

关键词： β-tricalcium phosphate mesoporous microemulsion bone marrow mesenchymal stem cells

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Bioadaptable bioactive glass-β-tricalcium phosphate scaffolds with TPMS-gyroid structure by stereolithography for bone regeneration

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Journal of materials Science & technology 2023年第24期155卷 54-65页

作者： Meng Li Jiawei Jiang Wenbin Liu Xiaolong Huang Xiaopei Wu Wenying Wei Hao Zhu Jinyong Zhang Jun Xiao Honglian Dai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Biomedical Materials and Engineering Research Center of Hubei Province Wuhan 430070 China Department of Orthopedics Tongji Hospital Tongji Medical College Huazhong University of Science and Technology Wuhan 430030 China Department of Orthopaedics The Third Xiangya Hospital Central South University Changsha 410008 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Xianhu Hydrogen Valley Foshan 528200 China

Bone defect repair remains a troubling problem in clinical orthopedics,which involves complex biological *** phosphates(CaPs)have been widely used owing to their advantage of ***,single component and traditional fabrication methods cannot meet the requirements of bioadaptability during the tissue repair *** this work,0%,5%,15%,25%wt%of BG-TCP(bioactive glass-β-tricalcium phosphate)bioresorbable scaffolds with triply-periodic minimal surfaces(TPMS)-gyroid structure were prepared by the stereolithography(SLA)***-gyroid structure provided an accurate mimicry of natural bone tissue,and the incorporation of BG improved the compressive strength ofβ-TCP matrix,matched with the defective bone(2–12 MPa).Rapid but tunable degradation kinetics(compared with pure TCP)of BG enabled the BG-TCP system to sh8ow adaptable biodegradability to new bone *** vitro studies have shown that composite scaffolds have better mechanical properties(7.82 MPa),and can released appropriate contents of calcium,phosphorous,and magnesium ions,which promoted the osteogenic differentiation of bone marrow mesenchymal stem cells(BMSCs)and angiogenic ability of endothelial progenitor cells(EPCs).Moreover,the in vivo assessment of rat femoral defect revealed that TPMS-structure-based TCP scaffolds accelerated bone ingrowth to the ***,BG-TCP scaffolds,especially 15BG-TCP group,exhibited superior bone regeneration capacity at both 4 and 8 weeks,which achieved an optimal match between the rate of material degradation and tissue *** summary,this study provides insight into influences of bioactive components(BG)and bionic structures(TPMS)on the physical-chemical properties of materials,cell behavior and tissue regeneration,which offers a promising strategy to design bioadaptive ceramic scaffolds in the clinical treatment of bone defects.

关键词： Bioactive glass Tricalcium phosphate Triply periodic minimal surfaces Stereolithography Osteogenesis

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Molecular engineering binuclear copper catalysts for selective CO_(2) reduction to C_(2) products

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Journal of Energy Chemistry 2024年第6期93卷 166-173,I0005页

作者： Qi Zhao Kai Lei Bao Yu Xia Rachel Crespo-Otero Devis Di Tommaso Department of Chemistry School of Physical and Chemical SciencesQueen Mary University of LondonLondonE14NSUK Key Laboratory of Material Chemistry for Energy Conversion and Storage(Ministry of Education) Hubei Key Laboratory of Material Chemistry and Service FailureState Key Laboratory of Materials Processing and Die&Mould TechnologySchool of Chemistry and Chemical EngineeringHuazhong University of Science and Technology(HUST)Wuhan 430074HubeiChina Department of Chemistry University College LondonLondonWC1H 0AJUK Digital Environment Research Institute Queen Mary University of LondonEmpire HouseLondon E11HHUK

Molecular copper catalysts serve as exemplary models for correlating the structure-reaction-mechanism relationship in the electrochemical CO_(2) reduction(eCO_(2)R),owing to their adaptable environments surrounding the copper metal *** investigation,employing density functional theory calculations,focuses on a novel family of binuclear Cu molecular *** modulation of their coordination configuration through the introduction of organic groups aims to assess their efficacy in converting CO_(2) to C_(2)*** findings highlight the crucial role of chemical valence state in shaping the characteristics of binuclear Cu catalysts,consequently influencing the eCO_(2)R behaviour,Notably,the Cu(Ⅱ)Cu(Ⅱ)macrocycle catalyst exhibits enhanced suppression of the hydrogen evolution reaction(HER),facilitating proton trans fer and the eCO_(2)R *** rthermore,we explo re the impact of diverse electro n-withdrawing and electron-donating groups coordinated to the macrocycle(R=-F,-H,and-OCH_3)on the electron distribution in the molecular *** placement of-OCH_3 groups in the macrocycles leads to a favourable oxidation state of the Cu centres and subsequent C-C coupling to form C_(2) *** research provides fundamental insights into the design and optimization of binuclear Cu molecular catalysts for the electrochemical conversion of CO_(2) to value-added C_(2) products.

关键词： Molecular catalyst design Selective CO_(2)reduction C_(2)products Density functional theory calculations

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Structural Evolution of Graphene Oxide and Its Thermal Stability During High Temperature Sintering

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Journal of Wuhan University of technology(materials Science) 2022年第3期37卷 342-349页

作者： HU Lanxin WANG Aiyang WANG Weimin School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

The thermal reduction of graphene oxide(GO)was performed by a tube furnace at different temperatures,and its structure evolution was investigated in *** results showed that the oxygen-containing functional groups on the carbon plane surface of GO gradually decomposed as the temperature increase,and the reduced graphene oxide(rGO)powder was obtained at 800℃.Then,rGO powder was sintered under 30 MPa at 1800℃using spark plasma sintering(SPS)and hot-pressing(HP)to evaluate its structural stability at high *** defect densities of rGO were reduced after high-temperature *** edge flatness and sp^(2) hybrid carbon plane structure were reconstructed *** results demonstrate that the lamellar structure of rGO maintains the structural integrity during high-temperature sintering without obvious deterioration,which provides experimental and theoretical supports for GO reinforced ceramics.

关键词： graphene oxide ceramics structure evolution thermal stability sintering

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Oxidation Behaviors of Different Grades of Ferritic Heat Resistant Steels in High-Temperature Steam and Flue Gas Environments

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Acta Metallurgica Sinica(English Letters) 2022年第7期35卷 1103-1116页

作者： Xiaogang Li Qu Liu Shanlin Li Yu Zhang Zhipeng Cai Kejian Li Jiluan Pan Department of Mechanical Engineering Tsinghua UniversityBeijing 100084China Key Laboratory for Advanced Materials Processing Technology Ministry of EducationBeijing 100084China State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China Collaborative Innovation Center of Advanced Nuclear Energy Technology Tsinghua UniversityBeijing 100084China

For steam tubes used in thermal power plant,the inner and outer walls were operated in high-temperature steam and flue gas environments *** this study,structure,microstructure and chemical composition of oxide films on inner and outer walls of exservice low Cr ferritic steel G102 tube and exservice high Cr ferritic steel T91 tube were *** oxide film was composed of outer oxide layer,inner oxide layer and internal oxidation *** outer oxide layer on the original surface of tube had a porous structure containing Fe oxides formed by diffusion and oxidation of *** specially,the outer oxide layer formed in flue gas environment would mix with coal combustion products during the growth *** inner oxide layer below the original surface of tube was made of Fe–Cr *** internal oxidation zone was believed to be the precursor stage of inner oxide *** formation of internal oxidation zone was due to O diffusing along grain boundaries to form *** were Fe–Cr–Si oxides discontinuously distributed along grain boundaries in the internal oxidation zone of G102,while there were Fe–Cr oxides continuously distributed along grain boundaries in that of T91.

关键词： Ferritic heat resistant steels High temperature service Oxide layer Steam Flue gas Oxidation evolution

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Swelling and erosion assisted sustained release of tea polyphenol from antibacterial ultrahigh molecular weight polyethylene for joint replacement

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Chinese Chemical Letters 2025年第2期36卷 316-320页

作者： Yue Ren Kang Li Yi-Zi Wang Shao-Peng Zhao Shu-Min Pan Haojie Fu Mengfan Jing Yaming Wang Fengyuan Yang Chuntai Liu State Key Laboratory of Structural Analysis Optimization and CAE Software for Industrial EquipmentNational Engineering Research Center for Advanced Polymer Processing TechnologyZhengzhou UniversityZhengzhou 450002China Tianjian Laboratory of Advanced Biomedical Sciences Academy of Medical SciencesZhengzhou UniversityZhengzhou 450000China Department of Stomatology The First Affiliated Hospital of Zhengzhou UniversityZhengzhou 450000China

The considerable hazard posed by periprosthetic joint infections underlines the urgent need for the rapid advancement of in-situ drug delivery systems within joint ***,the pursuit of sustained antibacterial efficacy remains a formidable *** this context,we proposed a novel strategy that leverages swelling and erosion mechanisms to facilitate drug release of drug-loaded ultrahigh molecular weight polyethylene(UHMWPE),thereby ensuring its long-lasting antibacterial *** oxide(PEO),a hydrophilic polymer with fast hydrating ability and high swelling capacity,was incorporated in UHMWPE alongside the antibacterial tea polyphenol(epigallocatechin gallate,EGCG as representative).The swelling of PEO enhanced water infiltration into the matrix,while the erosion of PEO balanced the release of the encapsulated EGCG,resulting in a steady *** behavior was supported by the EGCG release profiles and the corresponding fitted release kinetic *** demonstrated by segmented antibacterial assessments,the antibacterial efficiency was enhanced 2to 3 times in the PEO/EGCG/UHMWPE composite compared to that of EGCG/***,the PEO/EGCG/UHMWPE composite exhibited favorable biocompatibility and mechanical performance,making it a potential candidate for the development of drug-releasing joint implants to combat prosthetic bacterial infections.

关键词： Tea polyphenol Antibacterial PEO UHMWPE Joint replacement

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