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Development of Eggshell Waste Incorporated with a Porous Host as a Humidity Adsorption material

Journal of Wuhan University of technology(materials Science) 2023年第5期38卷 974-983页

作者： BOONSOOK Kanokwan NAEMCHANTHARA Patcharin LIMSUWAN Pichet NAEMCHANTHARA Kittisakchai Department of Physics Faculty of ScienceKing Mongkut’s University of Technology Thonburi28 Bangkok 10140Thailand Department of Material and Process Engineering Technology 29 Faculty of Engineering and TechnologyKing Mongkut’s University of Technology North Bangkok30 Rayong CampusRayong 21120Thailand

The duck eggshell waste was developed to the novel desiccant that is friendly to human and *** calcium oxide(Ca O)and calcium chloride(CaCl_(2))as the calcium-based desiccants were prepared from eggshell *** Ca O desiccant derived from the eggshell waste sintering at 1300℃,while the CaCl_(2)desiccant was extracted from eggshell waste with the hydrochloric(HCl)solution at difierent concentrations from 5 to 30 wt%.The yield percentage of CaCl_(2)desiccant increased with increasing the HCl concentration to 25 wt%.The humidity adsorption behavior were investigated in the range of 75%-5%relative *** results show the CaCl_(2)desiccant has the highest hydration *** porous host from the kaolin was sintered at different temperatures from 200 to 1000℃and incorporated with 30%w/v concentrations of CaCl_(2).The physical properties and the humid-adsorption capacity of all porous host conditions were *** porous host at sintering temperature 800℃has the highest specific surface ***,the porous host at sintering temperature 800℃with the 30%w/v concentration of CaCl_(2)desiccant has the highest humid-adsorption capacity.

关键词： Eggshell waste Calcium chloride Desiccant Kaolin Porous materials

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Potential use of Ulva intestinalis-derived biochar adsorbing phosphate ions in the cultivation of winter wheat Tristicum aestivum

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Bioresources and Bioprocessing 2024年第1期11卷 371-394页

作者： Natalia Niedzbała Ewa Lorenc-Grabowska Piotr Rutkowski Jacek Chęcmanowski Anna Szymczycha-Madeja Maja Wełna Izabela Michalak Department of Advanced Material Technologies Faculty of ChemistryWrocław University of Science and TechnologyWrocławPoland Department of Process Engineering and Technology of Polymer and Carbon Materials Faculty of ChemistryWrocław University of Science and TechnologyWrocławPoland Department of Analytical Chemistry and Chemical Metallurgy Faculty of ChemistryWrocław University of Science and TechnologyWrocławPoland

In this work,the properties of biochar produced from green macroalga Ulva intestinalis by pyrolysis were studied at temperatures of 300,500,and 700°*** biochar was characterized in terms of multielemental composition,BET surface area,total pore volume,and biosorption properties toward phosphate *** produced at 700°C-25 m2/g had the highest surface *** kinetics and isotherms of sorption processes of phosphate ions as sorbate by these sorbents were *** biochar was able to remove 84.3%of phosphate ions from wastewater,whereas non-modified biochar-only 40.6%.Hence,biochar enriched with phosphate ions can serve as a valuable soil *** experiments performed on winter wheat(Triticum aestivum)with a 3%addition of dry Ulva intestinalis,pristine biochar,and Mg-modified biochar enriched with phosphate ions showed that these amendments stimulated plant growth(length and fresh weight of plants)as well as enlarging the chlorophyll content in *** results indicate that the production of biochar(pristine and Mg-impregnated)is a sustainable option to valorize the biomass of seaweeds,and to recycle phosphorus from wastewater.

关键词： Green seaweed Pyrolysis Biochar Phosphate ions Wastewater treatment Soil additives

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Influence of recycled carbon fiber addition on the microstructure and creep response of extruded AZ91 magnesium alloy

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Journal of Magnesium and Alloys 2023年第7期11卷 2518-2529页

作者： Sinan Kandemir Jan Bohlen Hajo Dieringa Department of Mechanical Engineering Izmir Institute of TechnologyGülbahçeUrlaIzmir 35430Türkiye Helmholtz-Zentrum Hereon Institute of Material and Process DesignMax-Planck-Straße 1Geesthacht 21502Germany

In this study,the recycled short carbon fiber(CF)-reinforced magnesium matrix composites were fabricated using a combination of stir casting and hot *** objective was to investigate the impact of CF content(2.5 and 5.0 wt.%)and fiber length(100 and 500μm)on the microstructure,mechanical properties,and creep behavior of AZ91 alloy *** microstructural analysis revealed that the CFs aligned in the extrusion direction resulted in grain and intermetallic refinement within the *** comparison to the unreinforced AZ91 alloy,the composites with 2.5 wt.%CF exhibited an increase in hardness by 16-20%and yield strength by 5-15%,depending on the fiber length,while experiencing a reduction in *** the reinforcement content was increased from 2.5 to 5.0 wt.%,strength values exhibited fluctuations and decline,accompanied by decreased *** divergent outcomes were discussed in relation to fiber length,clustering tendency due to higher reinforcement content,and the presence of interfacial products with micro-cracks at the CF-matrix *** creep tests indicated that CFs did not enhance the creep resistance of extruded AZ91 alloy,suggesting that grain boundary sliding is likely the dominant deformation mechanism during creep.

关键词： Metal matrix composites Magnesium alloys Recycled carbon fiber Extrusion,Microstructure Mechanical properties Creep

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Self-healing of active site in Co(OH)_(2)/MXene electrocatalysts for hydrazine oxidation

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Journal of materials Science & technology 2024年第36期203卷 108-117页

作者： Kun Xiang Yongjing Wang Zechao Zhuang Jing Zou Neng Li Dingsheng Wang Tianyou Zhai Jizhou Jiang School of Environmental Ecology and Biological Engineering School of Chemistry and Environmental EngineeringKey Laboratory of Green Chemical Engineering Process of Ministry of EducationEngineering Research Center of Phosphorus Resources Development and Utilization of Ministry of EducationNovel Catalytic Materials of Hubei Engineering Research CenterWuhan Institute of TechnologyWuhan 430205China Department of Chemistry Tsinghua UniversityBeijing 100084China State Key Laboratory of Silicate Materials for Architectures Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Material Processing and Die&Mould Technology School of Materials Science and EngineeringHuazhong University of Science and TechnologyWuhan 430074China

The development of efficient hydrazine oxidation reaction(HzOR)catalysts is important for the construc-tion of remarkable energy storage and conversion ***,after a period of electrochemical reaction,the active site of the catalyst will be irreversibly reduced or inactivated,and how to recover the active site is a major ***,we report 2D Co(OH)_(2)/Ti_(3)C_(2)(OH)_(x)MXene composites with rapid re-construction and self-healing behaviors as efficient and stable electrocatalysts during HzOR *** experimental and theoretical results indicate that the introduction of Ti_(3)C_(2)(OH)_(x)MXene can effectively reduce the dehydrogenation barrier of Co(OH)_(2),from 0.584 eV to 0.481 eV to form the real catalytic active center Co(OH)***,Co(OH)O/Ti_(3)C_(2)(OH)_(x)MXene composites with metal-like conductiv-ity not only present spontaneous adsorption capacity of N_(2)H_(4),but also can modulated rate-determining step of dehydrogenation of∗N_(2)H_(4)to∗N_(2)H_(3)(0.54 eV)compared with Co(OH)***,the electrophilic oxygen of Co(OH)O/Ti_(3)C_(2)(OH)_(x)can spontaneously obtain electrons and protons from N_(2)H_(4),achieving the oxidation of N_(2)H_(4)while reducing Co(OH)O to Co(OH)_(2),thus completing the self-healing of the efficient catalyst.

关键词： Hydrazine oxidation Self-healing Reconstruction Co(OH)_(2)/MXene Electrocatalysis

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“Wood-nacre”:Development of a Bio-inspired Wood-Based Composite for Beam and 3D-Surface Elements with Improved Failure Mechanisms

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Journal of Bionic engineering 2023年第4期20卷 1701-1711页

作者： Ulrich Müller Peter Halbauer Alexander Stadlmann Maximilian Grabner Hajir Al-musawi Bernhard Ungerer Maximilian Pramreiter Department of Material Science and Process Engineering Institute of Wood Technology and Renewable MaterialsUniversity of Natural Resources and Life SciencesKonrad-Lorenz-Straße 243430Tulln an der DonauAustria Hycobility Engineering&Technologies GmbH Stadiongasse 6-8/Top281010ViennaAustria

Following the natural structure of the nacre,the material studied consists of a multitude of hexagonal tiles that are glued together in an offset manner with a ductile *** so-called“wood nacre”consists of macroscopic tiles of birch wood veneer with a thickness of 0.8 mm and a size of 20 or 10 mm in diameter in order to mimic the aragonite tiles and the ductile PUR-adhesive corresponds to the layers of collagen in between.E-modulus(MOE),bending strength(MOR)and impact bending strength of the samples were determined and compared with reference samples of birch laminated *** hierarchical layered structure of the tiles does not cause any relevant loss in *** nacre,“wood nacre”also shows tough fracture behaviour and a high homogenization ***,strain hardening and high fracture toughness of the natural model could not be fully *** reason for this is the insufficient ratio between the strength and stiffness of the veneer layers and the *** adjusting the size of the tiles,increasing the strength and surface roughness of the veneers,*** densification,and using more ductile adhesives that can be applied in smaller layer thicknesses,it should be possible to better reproduce the natural ratios of nacre and thus achieve a significant improvement in the material properties of“wood nacre”.In addition to the mechanical properties,the high potential of the new material lies in the possibility of producing 3D shell-shaped elements for lightweight wood hybrid construction.

关键词： Bio-inspired Damage tolerance Failure behaviour Hierarchical structure Nacre Work of fracture

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Influence of pH value and Zn/Ce cations ratio on the microstructures and corrosion resistance of LDH coating on AZ31

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Corrosion Communications 2022年第1期5卷 73-86页

作者： Vahdat Zahedi Asl Jingmao Zhao Yahya Palizdar Muhammad Junaid Anjum College of Material Science and Engineering Beijing University of Chemical Technology Beijing Key Laboratory of Electrochemical Process and Technology for Materials Nanotechnology and Advanced Materials Department Materials and Energy Research Center

To prepare a compact and anti-corrosion Zn-Ce LDH coating on AZ31 magnesium alloy,the various molar ratios of Zn/Ce cations,and different pH values were employed during preparation of the precursor *** composition,morphology,structure,and wettability of the deposited coatings were comprehensively characterized via scanning electronic microscopy （SEM）,energy-dispersive X-ray spectroscopy （EDS）,X-ray diffraction （XRD）,X-ray photoelectron spectroscopy （XPS）,Fourier transform infrared spectroscopy （FT-IR） and the static sessile drop ***,potentiodynamic polarization （PDP） and electrochemical impedance spectroscopy （EIS）measurements were conducted to evaluate the corrosion resistance of the coatings ***,the selfhealing ability of the coating was investigated by monitoring the scratched areas of the samples immersed in 3.5%NaCl solution for a long time up to 21 *** results reveal that the coated Mg alloy shows the lowest corrosion current density (icorr=1.29×10-8A/cm2) when the Zn/Ce ratio is 2,and the pH value of the precursor solution is approximately 11.

关键词： LDH coating Magnesium alloy Corrosion protection Self-healing Cerium XPS

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Dual single-atom Ce-Ti/MnO_(2)catalyst enhances low-temperature NH_(3)-SCR performance with high H_(2)O and SO_(2)resistance

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Nano Research 2023年第1期16卷 299-308页

作者： Jingjing Song Shaomian Liu Yongjun Ji Wenqing Xu Jian Yu Bing Liu Wenxing Chen Jianling Zhang Lihua Jia Tingyu Zhu Ziyi Zhong Guangwen Xu Fabing Su College of Chemistry and Chemical Engineering Qiqihaer UniversityQiqihaer 161006China Institute of Process Engineering Chinese Academy of SciencesBeijing 100190China School of Light Industry Beijing Technology and Business UniversityBeijing 100048China Department of Chemical Engineering School of Chemical and Material EngineeringJiangnan UniversityWuxi 214122China School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081China Department of Chemical Engineering Guangdong Technion-Israel Institute of Technology(GTIIT)Shantou 515063China Technion-Israel Institute of Technology(IIT) Haifa 32000Israel Institute of Industrial Chemistry and Energy Technology Shenyang University of Chemical TechnologyShenyang 110142China

Mn-based catalysts have exhibited promising performance in low-temperature selective catalytic reduction of NOx with NH_(3)(NH_(3)-SCR).However,challenges such as H_(2)O-or SO_(2)-induced poisoning to these catalysts still ***,we report an efficient strategy to prepare the dual single-atom Ce-Ti/MnO_(2)catalyst via ball-milling and calcination processes to address these ***-Ti/MnO_(2)showed better catalytic performance with a higher NO conversion and enhanced H_(2)O-and SO_(2)-resistance at a lowtemperature window(100−150°C)than the MnO_(2),single-atom Ce/MnO_(2),and Ti/MnO_(2)*** in situ infrared Fourier transform spectroscopy analysis confirmed there is no competitive adsorption between NOx and H_(2)O over the Ce-Ti/MnO_(2)*** calculation results showed that the synergistic interaction of the neighboring Ce-Ti dual atoms as sacrificial sites weakens the ability of the active Mn sites for binding SO_(2)and H_(2)O but enhances their binding to NH_(3).The insight obtained in this work deepens the understanding of catalysis for NH_(3)-*** synthesis strategy developed in this work is easily scaled up to commercialization and applicable to preparing other MnO_(2)-based single-atom catalysts.

关键词： dual single atom catalyst Ce-Ti/MnO_(2) selective catalytic reduction of NOx with NH_(3)(NH_(3)-SCR) low-temperature performance H_(2)O-and SO_(2)-resistance

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Effect of thermo-mechanical conditions during constrained friction processing on the particle refinement of AM50 Mg-alloy phases

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Journal of Magnesium and Alloys 2024年第6期12卷 2298-2311页

作者： Camila Caroline de Castro AndréMartins Neves Benjamin Klusemann Helmholtz-Zentrum Hereon Institute of Material and Process DesignSolid-State Materials Processing21502 GeesthachtGermany Helmholtz-Zentrum Hereon Institute of Hydrogen TechnologySystem Design for Mobility21502 GeesthachtGermany Helmut Schmidt University/University of the German Federal Armed Forces Hamburg Department of Mechanical and Civil Engineering22043 HamburgGermany Leuphana University Lüneburg Institute for Production Technology and Systems21335 LüneburgGermany

Constrained Friction processing(CFP)is a novel solid-state processing technique suitable for lightweight materials,such Mg-and *** technique enables grain size refinement to fine or even ultrafine *** this study,the effect of CFP on the microstructural refinement of AM50 rods is investigated in terms of particle size and morphology of the eutectic and secondary phases originally present in the base material,in particular the eutecticβ-Mg_(17)Al_(12)and Al-Mn *** that purpose,as-cast and solution heat-treated base material and processed samples were *** Al_(8)Mn_(5) intermetallic phase was identified as the main secondary phase present in all samples before and after the processing.A notorious refinement of these particles was observed,starting from particles with an average equivalent length of a few micrometers to around 560 nm after the *** refinement of the secondary phase refinement is attributed to a mechanism analogous to the attrition comminution,where the combination of temperature increase and shearing of the material enables the continuous breaking of the brittle intermetallic particles into smaller *** for the eutectic phase,the results indicate the presence of the partially divorcedβ-Mg_(17)Al_(12)particles exclusively in the as-cast base material,indicating that no further phase transformations regarding the eutectic phase,such as dynamic precipitation,occurred after the *** the case of the processed as-cast material analyzed after the CFP,the thermal energy generated during the processing led to temperature values above the solvus limit of the eutectic phase,which associated with the mechanical breakage of the particles,enabled the complete dissolution of this ***,CFP was successfully demonstrated to promote an extensive microstructure refinement in multiple aspects,in terms of grain sizes of theα-Mg phase and presence and morphology of the Al-Mn and eutecticβ-Mg_(17)Al_(12).

关键词： Constrained friction processing AM50 Refill friction stir spot welding Extrusion β-Mg_(17)Al_(12) Al-Mn phases

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Classification and Age Estimation of Fossil Shells from Ban Sap Noi Geopark in Thailand,through the material Characterization Techniques

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Journal of Wuhan University of technology(materials Science) 2025年第3期40卷 635-643页

作者： Sirikorn Pongtornkulpanich Patcharin Naemchanthara Kridsada Faksawat Weeranut Kaewwiset Pichet Limsuwan Kittisakchai Naemchanthara Department of Physics Faculty of ScienceKing Mongkut’s University of Technology ThonburiBangkok 10140Thailand Department of Material and Process Engineering Technology Faculty of Engineering and TechnologyKing Mongkut’s University of Technology North BangkokRayong CampusRayong 21120Thailand Division of Tuberculosis Department of Disease ControlMinistry of Public HealthBangkok 10120Thailand Division of Physics Department of Physical and Material SciencesFaculty of Liberal Arts and ScienceKaset-sart University(Kamphaeng-Saen Campus)Nakhon Pathom 73140Thailand

The fossil shells on the sedimentary rocks were collected from The Historical Park,Ban Sap Noi Geopark,Phetchabun Province,***,the fossils remained in this area were investigated on the characteristic species only in geological studies with taxonomy for fossil age *** fill up the gap of these studies,the material characterization techniques were used to study the chemical composition and structure of fossil shells I,II and *** results clearly showed that the morphologies of all fossil shells were Brachiopod fossils with different *** functional group and elemental composition of all fossil shells showed that the high content of calcium carbonate was a major *** addition,the high content of quartz indicated the silica precipitation phenomenon in all fossil *** element composition of cross-sectional morphology and energy dispersive spectroscope (EDS mapping) were used to confirm the presence of Si element in each zone of fossil *** crystal structures of all fossil shells were investigated and indicated that the calcium carbonate compound was a calcite phase and silicon dioxide compound was a quartz ***,the crystal structure of quartz phase was used to calculate the crystallinity *** crystallinity index values in all fossil shells indicated a well-crystallized *** age of fossil shells was estimated and found to be brachiopod fossil in carboniferous period with the age of about 359.2 to 299.0 million years.

关键词： fossil shell Ban Sap Noi Geopark crystallinity index fossil age carboniferous period

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Improving the Precipitation Hardness of Ductile Magnesium Alloys by Twin Roll Casting 14th

Improving the Precipitation Hardness of Ductile Magnesium Al...

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14th International Conference on technology of Plasticity, ICTP 2023

作者： Kurz, Gerrit Atxega, Eneko Eizagirre Özkaya, Fahrettin Bohlen, Jan Hübner, Sven Behrens, Bernd-Arno Jo, Sumi Institute of Material and Process Design Helmholtz-Center Hereon Geesthacht Germany Institute of Forming Technology and Machines Leibniz University Hannover Hanover Germany Department of Materials Science and Metallurgical Engineering Kyungpook National University Daegu Korea Republic of

ISBN: (纸本)9783031413407

The challenge implementing magnesium sheets as a lightweight material is to manufacture sheets with an acceptable formability at room temperature and sheet components with a suitable strength. The aim of this work is qualifying suitable alloys and their manufacturing process in a way that precipitation hardening is enabled after the final forming process. The precipitation morphology and the rapid solidification obtained by twin roll casting process are used to find an optimum microstructure for deep drawing and to increase the strength of the formed component by heat treatment. The results show that magnesium sheets made from Mg-Zn-Al-Ca exhibit good forming properties even after rolling from the slab, as well as an increase in hardness after a suitable heat treatment. The production route of sheets via twin roll casting process exhibits higher increases in both ductility of the sheets and hardness after heat treatment compared to the production route via ingot-rolling. This paper presents results of rolling experiments with different feedstock of Mg-Zn-Al-Ca alloys, the microstructures and textures, as well as their mechanical properties and Erichsen values. In addition, various heat treatments were carried out to increase hardness. The second part of the paper deals with the development of a suitable heated deep-drawing tool and shows the heat distribution in the tool as well as first results of the deep-drawing tests. © 2024, The Author(s), under exclusive license to Springer Nature Switzerland AG.

关键词： Hardness

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