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Journal of materials Science & Technology 2022年第13期108卷 10-17页

作者： Panpan Zhou Meng Wang Zhi Song Yongkang Guan Lixi Wang Qitu Zhang co.lege of materials Science and Engineering Nanjing Tech UniversityNanjing 211816China jiangsu co.laborative Innovation Center for Advanced Inorganic Function composites Nanjing 211816China

Metal-organic frameworks(MOFs)are co.sidered as a novel type of microwave absorption(MA)material owing to the sufficient pore structure,diverse co.figurations,and easy-to-co.trol magnetic ***,their evolution is limited by the imperfect impedance matching co.ditions caused by the undesirable ***,two types of novel porous co.al-like carbon/co.(3)O_(4)and carbon/co.composites have been effectively fabricated for the first time by a facile heat treatment process of precursor *** graphitization degree,magnetic property and MA ability of the product can be effortlessly tuned by altering the heat treatment temperature of ***,S500(co.MOF-71 calcined at 500℃)composite displays strong and multi-frequency absorption performance,whose minimum reflection loss(RL)value achieves-36.4 d B with an absorbing thickness of 3.0 mm and attains an effective absorbing bandwidth(RL≤-10 dB)of 5.76 GHz(almost co.ers whole Ku band)at a thinner co.ting thickness of 2.5 *** superb MA ability has roots in the co.al-like structure derived from the layer co.MOF-71,sufficient electromagnetic *** work ameliorates the MA ability of MOFs through a special nanostructural design,which provides a fresh way for the preparation of novel MA materials.

关键词： co.MOF-71 co.al-like structure Ku band Magnetoelectric synergy Electromagnetic absorption

Preparation of hollow fiber membranes from mullite particles with aid of sintering additives

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Journal of Advanced Ceramics 2021年第1期10卷 78-87页

作者： Hua LIU Jinyun LIU Zhou HONG Shengxian WANG Xuechao GAO Xuehong GU State Key Laboratory of materials-Oriented Chemical Engineering College of Chemical EngineeringNanjing Tech UniversityNo.30 Puzhu Road(S)Nanjing 211816China Nanjing Membrane materials Industrial Technology Research Institute co. Ltd.No.1 Yuansi RoadPukou Economic Development ZoneNanjing 211808China

Porous mullite hollow fiber membranes were prepared with a co.bined phase-inversion and sintering method,using three sintering additives including yttrium stabilized zirco.ia(YSZ),small mullite particles(SMP),and titanium oxide(TiO2)to promote the particle *** results indicated that all the three additives co.ld improve the sintering performance of mullite hollow fiber membranes due to the decrease in activation energy of mullite *** YSZ and T i02 co.ld react with mullite grains to generate composite oxides(e.g.,ZrSi04 and Al2Ti05)during sintering,following a reaction-sintering ***,the newly generated ZrSiO4 was instable and further deco.posed into monoclinic ZrO2 and SiO2 in the sintering *** deco.position co.ld avoid excessive embedment of composite oxides among mullite grains which have negative impact on mechanical strength of mullite hollow ***,the doping of YSZ provided a better promotion effect on the sintering of mullite hollow fiber membranes,where the microstructural and mechanical properties are insensitive to the doping co.tent and sintering temperatures,so it co.ld be used as the candidate for the large-scale preparation of mullite hollow fibers.

关键词： mullite sintering additives hollow fiber membranes sintering behavior

Ag_(24)Au cluster deco.ated mesoporous co.(3)O_(4)for highly selective and efficient photothermal co.(2)hydrogenation

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Nano Research 2022年第6期15卷 4965-4972页

作者： Yan Xiong Xu Liu Yi Hu Dong Gu Minghang Jiang Zuoxiu Tie Zhong Jin MOE Key Laboratory of Mesosco.ic Chemistry MOE Key Laboratory of High Performance Polymer Materials and TechnologyJiangsu Key Laboratory of Advanced Organic MaterialsSchool of Chemistry and Chemical EngineeringNanjing UniversityNanjing 210023China Suzhou Tierui New Energy Technology co.Ltd. Suzhou 215228China The Institute for Advanced Studies Wuhan UniversityWuhan 430072China

Photothermal carbon dioxide hydrogenation represents a promising route to reduce the emission of greenhouse gas co.(2)and produce value-added chemicals,but the selectivity and stability of photothermal catalysts need to be ***,we report the rational fabrication of well-defined Ag_(24)Au cluster deco.ated highly ordered nanorod-like mesoporous co.(3)O_(4)(Ag_(24)Au/mesoco.(3)O_(4))for highly efficient and selective co.(2)*** orderly assembled meso-co.(3)O_(4)nanorods were prepared via a nanocasting method,offering large surface area and abundant active sites for co.(2)adsorption and ***,the catalytic activity and selectivity were further improved by molecule-like Ag_(24)Au cluster deco.ation and reaction temperature *** Ag_(24)Au/meso-co.(3)O_(4)composite catalyst exhibited an ultrahigh CH_(4)yield rate of 204 mmol·g^(−1)·h^(−1)and a greatly improved CH_(4)selectivity of 82%for co.(2)hydrogenation,significantly higher than those of pristine meso-co.(3)O_(4)*** mechanism of the photothermal catalytic performance improvement was verified by co.(2)temperature-programmed desorption and time-resolved transient photoluminescence,revealing that co.(2)molecules underwent a vigorous adsorption and rapid activation process over Ag_(24)Au/meso-co.(3)O_(4).The hot electrons created by the localized surface plasmon resonance effect of Ag_(24)Au clusters facilitated the charge transfer for subsequent multi-electron co.(2)hydrogeneration processes,resulting in a significant increase in the productivity and selectivity for co.(2)-to-CH_(4)*** work suggests that the rational co.pling of well-defined metal atom clusters and ordered transition metal co.pound nanostructures co.ld open a new avenue towards photoinduced green chemistry processes for efficient co.(2)recycling and reutilization.

关键词： mesoporous co.(3)O_(4) Ag_(24)Au clusters co.(2)hydrogenation photothermal catalytic

Waste co.ton fabric derived porous carbon co.taining Fe_(3)O_(4)/NiS nanoparticles for electrocatalytic oxygen evolution

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Journal of materials Science & Technology 2020年第24期59卷 92-99页

作者： Shan Jiang Hao Shao Genyang Cao Han Li Weilin Xu Jingliang Li Jian Fang Xungai Wang Deakin University Institute for Frontier MaterialsGeelongVIC3216Australia State Key Laboratory of New Textile materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan430200China co.lege for Textile and Clothing Engineering Soochow UniversitySuzhouJiangsu215123China

Developing low-co.t,active and durable electrocatalysts for oxygen evolution reaction(OER)is an urgent task for the applications such as water splitting and rechargeable metal-air ***,this work reports the fabrication of a metal and hetero atom co.doped fibrous carbon structure derived from co.ton textile wastes and its use as an efficient OER *** free-standing fibrous carbon structure,fabricated with a simple two-step carbonization process,has a high specific surface area of 1796 m^2/g and a uniform distribution of Fe_(3)O_(4)/NiS nanoparticles(Fe_(3)O_(4)/NiS@CC).The composite exhibits excellent OER performance with an onset potential of 1.44 V and a low overpotential of 310 mV at the current density of 10 mA/cm^2in a 1.0 M KOH solution,which even surpass co.mercial Ru O_(2)***,this ternary catalyst shows remarkable long-term stability without current density loss after co.tinuous operation for 26 *** can be believed that the outstanding OER performance is attributed to the synergistic effect between the iron oxides and nickel sulphides,as well as the micro-meso porous carbon *** study demonstrates a new strategy to use co.ventional textile materials to prepare highly efficient electrocatalysts;it also provides a simple approach to turn textile waste into valuable products.

关键词： Waste co.ton Porous carbon OER electrocatalyst Iron oxides Nickel sulphides

Structure and property of mesoporous molybdenum/carbon co.doped brookite titania

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中国有色金属学会会刊：英文版 2009年第S3期19卷 669-673页

作者：吕晓萌刘军张辉丁建林谢吉民 School of Chemistry and Chemical Engineering Jiangsu University School of Environment Jiangsu University

Phase-pure brookite TiO2 was prepared by hydrothermal method using Ti(SO4)2 as precursor. From the point of energy co.pensation, molybdenum/carbon co.doped brookite TiO2 photocatalysts were prepared in the presence of dissolved gluco.e and ammonium molybdate. The samples were characterized by thermoanalysis, UV-vis diffuse reflectance spectrosco.y (UV-vis/DRS), X-ray diffractometry (XRD), nitrogen adsorption and transmission electron microsco.y (TEM). The photocatalytic activities of the as-prepared samples were tested on the photodeco.oration of rhodamine B (Rh B) under simulated solar-light irradiation. The wavelength of light adsorption of co.doped samples is red shifted and the intensity of light adsorption increases highly in visible-light region co.pared with the single-doped samples. Thermal stability of brookite phase is improved greatly after co.doping, indicating that the co.doping facilitates the phase stabilization. co.doping can improve the photodeco.oration activity of composite brookite TiO2.

关键词： co.doping brookite titania photocatalysis

High Performance Electrospun Polynaphthalimide Nanofibrous Membranes with Excellent Resistance to Chemically Harsh co.ditions

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Chinese Journal of Polymer Science 2021年第12期39卷 1634-1644页

作者： Meng-Jie Yuan Zhao-Yu Hu Hong Fang Shu-Jing Li Hong-Tao Guo Ru-Bei Hu Shao-Hua Jiang Kun-Ming Liu Hao-Qing Hou Department of Chemistry and Chemical Engineering Jiangxi Normal UniversityNanchang 330022China jiangsu co.Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and MaterialsCollege of Materials Science and EngineeringNanjing Forestry UniversityNanjing 210037China Shandong Key Laboratory of Biochemical Analysis College of Chemistry and Molecular EngineeringQingdao University of Science and TechnologyQingdao 266042China Faculty of materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou 341000China

Polynaphthalimide(PNI)with six-membered imide ring(_(6-)PI)has better chemical resistance than five-membered imide ring(_(5-)PI),but is difficult to be processed into nano fibers due to the poor *** this work,we proposed a template strategy to fabricate nanofiber _(6-)PI membranes and their composite *** _(6-)PI and _(6-)PI composite fibrous membranes were prepared using high-molecular-weight polymers _(5-)PAA and PVP as templates by ***,DMA,TGA and tensile tests were used to characterize their chemical structures,thermal stability and mechanical *** eye-observation,micro-morphology investigation and tensile tests were applied to evaluate the chemical resistance of nanofibrous membranes in strong acid,strong alkaline,and co.centrated *** results demonstrated that 6-PI nano fibrous membra nes possessed the best thermal stability,best acid,alkaline,and salt resista nee with the highest mecha nical rete *** study will provide basic information for high-performance electrospun 6-PI nanofiber membranes and provide opportunities for applications of Pls in different chemically harsh environments.

关键词： Polynaphthalimide Nanofibrous membrane Strong acid Strong base Salt

Interface repairing for AA5083/T2 co.per explosive composite plate by friction stir processing

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Transactions of Nonferrous Metals Society of China 2021年第9期31卷 2585-2596页

作者： Jian WANG Xiao-wei WANG Bo LI Cheng CHEN Xiao-feng LU School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China Sunpower Technology(jiangsu)co. Ltd.Nanjing 211112China Additive Manufacturing and Intelligent Equipment Research Institute School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237China

Multi-pass friction stir processing(M-FSP)was performed to repair the interface defects of AA5083/T2 co.per explosive composite *** interface morphology and its bonding mechanism were *** results show that higher rotation speed and lower transverse speed produce more heat generated during *** defect-free and good mechanical properties of the AA5083/T2 co.per composite plate can be obtained under the co.dition of the rotation speed of 1200 r/min,the transverse speed of 30 mm/min and the overlap of 2/***,M-FSP changes the interface bonding mechanism from metallurgical bonding to vortex co.nection,improving the bonding strength of composite plate,which can guarantee the repairing quality of composite plates.

关键词： friction stir processing aluminum/co.per composite plate interface repairing mechanical properties

An investigation on failure behavior of semi-flexible composite mixture at different temperatures

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Journal of Road Engineering 2023年第2期3卷 186-202页

作者： Zijia Xiong Minghui Gong Jinxiang Hong Lei Zhang School of Transportation Southeast UniversityNanjing 210096China Sobute New materials co.Ltd. Nanjing 211103China State Key Laboratory of High Performance Civil Engineering materials Nanjing 211103China jiangsu Research Institute of Building Science co.Ltd. Nanjing 210008China

Semi-flexible composite mixture(SFCM)is a kind of pavement material formed by pouring cement-based grout material into a porous asphalt mixture with air voids from 20%to 30%.SFCM is widely used for its outstanding anti-rutting *** mechanical performance is co.plicated due to its heterogeneity and interlocking *** to the present study,asphalt deforms at different temperatures,whereas cement-based grout has no similar *** research focuses on the temperature-based performance of ***,the study was on the thermal performance of SFCM by seven open-graded asphalt mixture skeletons with different porosities and two types of grouts with early strength(ES)and high strength(HS).The test temperatures ranged from 10℃to 60℃.The mechanical investigation was performed using the semi-circular-bending(SCB)and beam bending *** strain sensor was used for analyzing the thermal performance of *** results show that the temperature significantly affected the SFCM's *** porosity was selected for three sections based on the trend of fracture energy(Gf)curves at 25℃.The turning points were the porosity values of 20%and 26%.The initiation slope during elastic deformation increases with the porosity *** trend was more evident at intermediate *** shrink strain of SFCM was lower than that of the usual asphalt mixture(AC).The thermal stress of the SFCM filled with HS(HS-SFCM)was higher than that of the SFCM filled with ES(ES-SFCM)at 10℃.Moreover,the thermal failure characteristics of SFCM were influenced by porosity.

关键词： Semi-flexible composite mixture Temperature SCB Strain sensor

Research and Application Progress of Straw

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Journal of Renewable materials 2023年第2期11卷 599-623页

作者： Ben Chen Sarah Mohrmann Haitao Li Milan Gaff Rodolfo Lorenzo Ileana co.bi Ottavia co.bi Kaidong Fang Min Li co.lege of Civil Engineering Nanjing Forestry UniversityNanjing210037China Joint International Research Laboratory for Bio-composite Building materials and Structures Nanjing Forestry UniversityNanjing210037China Department of Furniture Design and Habitat BrnoMendel University in BrnoBrno61300Czech Republic University co.lege London LondonWC1E6BTUK University of Naples Federico.II Naples80133Italy Lianyungang Baolisen Industrial co. Ltd.Lianyungang222500China

Straw is a general term for the stem and leaf parts of mature crops,and is a multi-purpose renewable biomass energy resource in the agricultural *** prospect of co.prehensive utilization of straw has beco.e broad with the development of agricultural production,the advancement of science and technology,and the improvement of the level of agricultural *** co.prehensive utilization of straw plays an important role in enhancing the sustainable development ability of agricultural eco.omy and improving the current situation of co.prehensive utilization of agricultural resources in my *** paper briefly co.bs the development history of straw and the prospect and current situation of co.prehensive utilization,and expounds the separation technology of straw co.ponents,straw man-made panels,straw co.crete,straw returning technology and oyster mushroom *** focuses on the description of the co.ponent separation technology of straw and the manufacturing process of straw-based *** different separation methods and separation effects of cellulose,hemicellulose and lignin were introduced in detail,and the static yield strength(MOR),internal bonding strength(IB)and water absorption thickness of several co.mon straw-based panels were co.pared and studied(TS).Finally,it summarizes the benefit analysis of the co.prehensive utilization of straw by scholars from the perspective of eco.omics,and summarizes the co.responding measures based on their own views.

关键词： Straw co.prehensive utilization co.ponent separation technology straw-based panel straw co.crete

Porous SiC/melamine-derived carbon foam frameworks with excellent electromagnetic wave absorbing capacity

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Journal of Advanced Ceramics 2019年第4期8卷 479-488页

作者： Xinli YE Zhaofeng CHEN Sufen AI Bin HOU Junxiong ZHANG Xiaohui LIANG Qianbo ZHOU Hezhou LIU Sheng CUI International Laboratory for Insulation and Energy Efficiency materials College of Materials Science and TechnologyNanjing University of Aeronautics and AstronauticsNanjing 211106China Suzhou Superlong Aviation Heat Resistance Material Technology co. Ltd.Suzhou 215400China Beijing Spacecrafts China Academy of Space TechnologyBeijing 100080China Department of Reactor Engineering China Institute of Atomic EnergyBeijing 102413China The State Key Lab of Metal Matrix composites Shanghai Jiao Tong UniversityShanghai 200240China jiangsu co.laborative Innovation Center for Advanced Inorganic Function composites Nanjing Tech UniversityNanjing 211800China

Porous three-dimensional Si C/melamine-derived carbon foam(3 D-Si C/MDCF)composite with an original open pore structure was fabricated by the heat treatment of the co.mercial melamine foam(MF),carbonization of the stable MF,and chemical vapor deposition of the ultra-thin Si C *** electron microsco.y(SEM)and X-ray diffraction(XRD)were employed to detect the microstructure and morphology of the as-prepared *** results indicated that the 3 D-Si C/MDCF composites with the co.ting structure were prepared *** obtained minimum reflection loss was–29.50 d B when the frequency and absorption thickness were 11.36 GHz and 1.75 mm,***,a novel strategy was put forward to state that the best microwave absorption property with a thin thickness of 1.65 mm was gained,where the minimum reflection loss was–24.51 d B and the frequency bandwidth was 3.08 *** excellent electromagnetic wave absorption ability resulted from the specific cladding structure,which co.ld change the raw dielectric property to acquire excellent impedance *** present work had a certain extend reference meaning for the potential applications of the lightweight wave absorption materials with target functionalities.

关键词： three-dimensional SiC/melamine-derived carbon foam(3D-SiC/MDCF) chemical vapor deposition co.ting structure electromagnetic wave absorption characteristic minimum reflection loss