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Formation Mechanism and Template-free synthesis of Hierarchical m-ZrO_2 Nanorods by Hydrothermal Method

Journal of Wuhan University of technology(materials Science) 2015年第6期30卷 1163-1166页

作者： Shahzad Ahmad KHAN 傅正义 Muhammad ASIF WANG Weimin WANG Hao State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Here, a new idea was proposed for template-free synthesis of hierarchical m-ZrO2 nanorods and ＂their＂ possible formation mechanism based on a series of chemical reactions by simple hydrothermal method. The traditional preparation methods of hierarchical ZrO2 nanorods involved inexpensive equipment, complicated process, and high production cost. The as-synthesized products composed of many nanorods with 180-200 nm in diameter and 5-7 μm in length. The fi nal product after annealing involved hierarchical monoclinic ZrO2（m-ZrO2） nanorods, namely, the big nanorod was made up of many small nanorods with 40-50 nm in diameter and 500-600 nm in length. The experimental results were useful in understanding the chemical properties of ZrB2 and ZrO2 and the design of the derivatives for m-ZrO2 nanomaterials.

关键词： growth models surface processes inorganic compounds ZrO2

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Structure modifications of wood-based materials for water treatment applications: A review

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materials Today 2025年

作者： Zhu, Yaqin Wang, Shiyuan Liu, Yanbo Han, Jingquan Duan, Gaigai Fu, Qiliang Han, Xiaoshuai Zhang, Chunmei He, Shuijian Jiang, Shaohua Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources International Innovation Center for Forest Chemicals and Materials College of Materials Science and Engineering Nanjing Forestry University Nanjing210037 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China Institute of Materials Science and Devices School of Materials Science and Engineering Suzhou University of Science and Technology Suzhou215009 China

With global freshwater scarcity and increasing water pollution due to industrial and agricultural activities, there is an urgent need for sustainable, high-performance water treatment materials. Conventional filtration and adsorption materials, such as polymer membranes and activated carbon, often suffer from high energy consumption, secondary pollution, and high production costs. In contrast, wood-based materials offer hierarchical porosity, natural adsorption sites, and tunable surface chemistry, making them a promising candidate for low-cost and environmentally friendly water treatment applications. In this review, we introduced the structure and properties of wood and described how these affect the preparation and water treatment properties of wood-based materials. We also summarized the structure design strategies for wood-based materials, mainly including delignification treatment, nanomaterials modification, functional group modification, and carbonation modification. In addition, we presented a comprehensive investigation of advances in the application of wood-based materials in water treatment with the aim of comparing, analyzing, and evaluating the practical functionality in sterilization, heavy metal ion removal, organic pollutants removal, oil/water separation, and desalination. Finally, we presented the serious challenges and new perspectives for wood-based materials in water treatment. © 2025 Elsevier Ltd

关键词： River pollution

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High-Performance Flexible Magnetic Textile Fabricated Using Porous Juncus effusus Fiber for Biomechanical Energy Harvesting

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Engineering 2025年第3期46卷 267-277页

作者： Junyao Gong Chunhua Zhang Liangjun Xia Zhaozixuan Zhou Weihao Long Zhuan Fu Sijie Zhou Hua Ji Lixin Du Weilin Xu State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile UniversityWuhan 430200China College of Textile Science and Engineering Zhejiang University of Science and TechnologyHangzhou 310018China College of Textiles Donghua UniversityShanghai 201620China Winner Medical Co. Ltd.Wuhan 430200China Luthai Textile Co. Ltd.Zibo 255100China

Mechanical energy produced by human motion is ubiquitous,continuous,and usually not utilized,making it an attractive target for sustainable electricity-harvesting *** this study,flexible magnetic-Juncus effusus(M-JE)fibers were prepared from plant-extracted three-dimensional porous Juncus effusus(JE)fibers decorated with polyurethane and magnetic *** M-JE fibers were woven into fabrics and used for mechanical energy harvesting through electromagnetic *** M-JE fabric and induction coil,attached to the human wrist and waist,yielded continuous and stable voltage(2 V)and current(3 mA)during *** proposed M-JE fabric energy harvester exhibited good energy harvesting potential and was capable of quickly charging commercial capacitors to power small electronic *** proposed M-JE fabric exhibited good mechanical energy harvesting performance,paving the way for the use of natural plant fibers in energy-harvesting fabrics.

关键词： Juncus effusus Magnetic fabrics Electromagnetic induction Energy harvest Mechanical-electrical energy conversion

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Efficient chromium Cr (VI) removal from wastewater through modified cycad's leaf biochar: insights into adsorption-reduction mechanisms and kinetic analysis

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Biomass and Bioenergy 2025年 200卷

作者： Li, Xin Wu, Qirui Chen, Dingdu Tamjidur, Rahman Sheikh Fan, Peng Wang, Geming Zhang, Weixin Provincial Key Laboratory of Plasma Chemistry and Advanced Materials Wuhan Institute of Technology Wuhan430073 China The State Key Laboratory of Materials Processing and Die & Mold Technology School of Materials Science and Engineering Huazhong University of Science and Technology Wuhan430074 China Wuhan NARI Limited Liability Company State Grid Electric Power Research Institute Wuhan430074 China

The removal of Cr(VI) from wastewater through adsorption is beneficial for both human health and the environment. Current adsorption materials often suffer from a small specific surface area and a single pore structure. In this study, cycad leaves were carbonized via vacuum high-temperature calcination and subsequently activated with KOH to obtain modified cycad leaf biochar (KBC). The activation with KOH significantly improved the specific surface area and pore structure of the biochar. The KBC sample exhibited abundant microporous and mesoporous structures, which facilitated the conversion of C=O to C-O, generating more active sites conducive to Cr(VI) adsorption. The specific surface area of KBC reached as high as 1225 m2/g, which was 40 times greater than that of BC (30 m2/g). These microstructural features significantly enhanced the adsorption capacity of cycad leaf biochar for Cr(VI), increasing it from 39.1 mg/g for BC to 250.7 mg/g for KBC when the adsorption time reached 96 h. Furthermore, both the pseudo-first-order kinetic model and the pseudo-second-order kinetic model were employed to deeply investigate the adsorption mechanism, which encompasses physical adsorption, chemical adsorption, and redox reactions. Kinetic analysis was conducted to elucidate the adsorption process. Additionally, density functional theory calculations were performed to verify the reaction mechanism between C-O groups and Cr(VI). By leveraging the synergistic effects of vacuum high-temperature calcination and KOH activation, the specific surface area and pore structure of the biochar achieved a significant improvement. This study not only provides a new method for wastewater treatment but also offers theoretical insights and technical support for the practical application of biochar-based adsorption materials in environmental remediation. © 2025 Elsevier Ltd

关键词： Potassium hydroxide

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Preparation and characterization of new microwave dielectric ceramics Ba_(3-n)La_(1+n)Ti_nNb_(3-n)O_(12)

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中国有色金属学会会刊：英文版 2006年第B02期16卷 521-523页

作者：方亮孟森森张辉吴伯麟 Key Laboratory of Nonferrous Materials and New Processing TechnologyMinistry of Education Guilin University of TechnologyGuilin 541004China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070China Key Laboratory of Nonferrous Materials and New Processing Technology Ministry of Education Guilin University of Technology Guilin 541004 China

A series of new microwave dielectric ceramics Ba3-nLa1+nTinNb3-nO12 (n=0,1,2) were prepared in the BaO-La2O3-TiO2-Nb2O5 system by high temperature solid-state reaction route. The phase and structure of the ceramics were characterized by X-ray diffraction, scanning electron microscope, and microwave dielectric properties measurements. These samples were identified as single phase and adopted A4B3O12-type cation-deficient hexagonal perovskite structure, which can be described as consisting of identical perovskite-like blocks, three corner-sharing BO6 octahedra thick, separated by layers of vacant octahedral. These ceramics have high dielectric constants in the range of 48-42, high quality factors (Q×f) up to 38 000 GHz, and low temperature coefficient of resonant frequencies (τf) in the range of (-40-+6)×10-6℃-1. With increasing content of La and Ti, the dielectric constants slightly decrease butτf gradually increases.

关键词：微波陶瓷介电性质 Ba3-nLa1+nTinNb3-nO12 BaO-La2O3-TiO2-Nb2O5 制备

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Three-Layer Structured SnO2@C@TiO2 Hollow Spheres for High-Performance Sodium Storage

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Energy & Environmental materials 2021年第3期4卷 428-433页

作者： Yu Tian Ping Hu Ting Zhu Zhenhui Liu Guangwu Hu Congcong Cai Zelang Jian Liang Zhou Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory

The unsatisfactory conductivity and large volume variation severely handicap the application of SnO2in sodium-ion batteries（SIBs）. Herein, we design unique three-layer structured SnO2@C@TiO2hollow spheres to tackle the above-mentioned issues. The hollow cavity affords empty space to accommodate the volume variation of SnO2, while the C and TiO2protecting shells strengthen the structural integrity and enhances the electrical conductivity. As a result, the three-layer structured SnO2@C@TiO2hollow spheres demonstrate enhanced Na storage performances. The SnO2@C@TiO2manifests a reversible capacity two times to that of pristine SnO2hollow spheres. In addition, Ex situ XRD reveals highly reversible alloying and conversion reactions in SnO2@C@TiO2hollow spheres. This study suggests the introduction of a hollow cavity and robust protecting shells is a promising strategy for constructing SIB anode materials.

关键词： hollow sphere SnO2 sodium-ion battery protecting shell structural integrity

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Three dimensional porous frameworks for lithium dendrite suppression

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Journal of Energy Chemistry 2020年第5期29卷 73-89页

作者： Shuyan Ni Shuangshuang Tan Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070HubeiChina

Lithium metal is a promising anode material owing to its very low electrochemical potential and ultrahigh specific ***,the growth of lithium dendrites could result in a short lifespan,low coulombic efficiency,and potential safety hazards during the progress of lithium plating/*** factors drastically hinder its application in lithium metal *** review focuses on the use of three dimensional(3D)porous host frameworks to improve Li plating/stripping behaviors,accommodate the change in volume,and suppress or block lithium dendrite *** 3D porous frameworks,including the conductive carbon-based,metal-based,and lithiophilic inorganic-compound frameworks are introduced and summarized in *** particular functions,relative developments,and optimized strategies of various 3D porous frameworks for lithium deposition/dissolution behaviors are ***,the challenges and promising developments in the field of Li metal anodes will be discussed at the end of this review.

关键词： Lithium metal battery 3D porous frameworks Lithium dendrite Lithium sulfur batteries Lithium oxygen batteries Li plating/stripping

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Photocatalytic hydrogen production toward carbon neutrality:tracking charge separation

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National Science Review 2023年第9期10卷 9-10页

作者： Bao-Lian Su Laboratory of Inorganic Materials Chemistry University of Namur State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology

Under the vision of 'carbon peaking and carbon neutrality',the global energy system is facing a deep *** a clean energy with the potential to achieve zero carbon emissions,hydrogen energy will undoubtedly play an important ***-energy-driven photo catalytic reactions can decompose water to produce hydrogen and reduce carbon dioxide to produce solar fuels.

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Rapid growth of ZnO hexagonal prism crystals by direct microwave heating

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Rare Metals 2008年第5期27卷 517-521页

作者： ZHU Zhenqi ZHOU Jian LIU Guizhen REN Zhiguo State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China

ZnO hexagonal prism crystals were synthesized from ZnO powders by microwave heating in a short time （within 20 min） without any metal catalyst or transport agent. Zinc oxide raw materials were made by evaporating from the high-temperature zone in an enclosure atmosphere and crystals were grown on the self-source substrate. The inherent asymmetry in microwave heating provides the temperature gradient for crystal growth. Substrate and temperature distribution in the oven show significant effects on the growth of the ZnO crystal. The morphologies demonstrate that these samples are pure hexagonal prism crystals with maximum 80 lain in diameter and 600 lure in length, which possess a well faceted end and side surface. X-ray diffraction （XRD） reveals that these samples are pure crystals. The photoluminescence （PL） exhibits strong ultraviolet emission at room temperature, indicating potential applications for short-wave light-emitting photonic devices.

关键词： zinc oxide prism crystal microwave heating vapor growth

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Thermal deformation behavior and microstructure evolution of AA6061 aluminum alloy with trace rare-earth Y added

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Journal of Alloys and Compounds 2025年 1031卷

作者： Ding, Wanwu Sun, Jianying Wei, Guoli Zhang, Lipeng Yuan, Haodeng Xu, Mei An, Jiazhi Yu, Haicun State Key Laboratory of Advanced Processing and Reuse of Nonferrous Metals Lanzhou University of Technology Gansu Lanzhou730050 China School of Materials Science and Engineering Lanzhou University of Technology Gansu Lanzhou730050 China Co Ltd Gansu Jiayuguan735100 China

A Gleeble-3500 thermal simulator was employed to conduct hot compression tests on AA6061 aluminum alloy containing 0.15 wt% yttrium (Y). The hot deformation behavior and microstructural evolution were systematically investigated under varying temperatures (350–550 ℃) and strain rates (0.01–10 s−1) at a constant strain of 66.7 %. The results indicate that the Y-modified alloy exhibits a high sensitivity to both strain rate and deformation temperature, with increasing strain rate and decreasing temperature synergistically elevating the flow stress. The calculated thermal activation energy (Q) of 228.57 kJ/mol suggests a strong resistance to deformation. Microstructural analysis reveals that the addition of Y promotes grain refinement, effectively suppressing the growth of β-AlFeSi and Mg₂Si phases while hindering dislocation motion and grain boundary migration. Elevated temperatures facilitate dynamic recrystallization, wherein initially elongated grains induced by deformation are progressively transformed into uniformly distributed equiaxed grains through coordinated mechanisms of dislocation rearrangement and subgrain formation. © 2025

关键词： Aluminum alloys

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