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Elastic and Compressive Barium Aluminosilicate Nanofibrous Sponge for Thermal Insulation up to 1400 °C

ACS Applied Nano materials 2025年第19期8卷 9995-10003页

作者： Guo, Hangyuan Liu, Hualei Wei, Lingqiao Fang, Songchun Surmenev, Roman A. Liu, Yi-Tao Yu, Jianyong Ding, Bin State Key Laboratory of Advanced Fiber Materials College of Materials Science and Engineering Donghua University Shanghai201620 China School of Materials Science and Engineering Shanghai University of Engineering Science Shanghai201620 China Innovation Center for Textile Science and Technology College of Textiles Donghua University Shanghai201620 China Physical Materials Science and Composite Materials Center Research School of Chemistry & Applied Biomedical Sciences National Research Tomsk Polytechnic University Tomsk634050 Russia

Traditional ceramic materials are prone to crushing due to structural collapse at high temperatures. Current efforts are focused on developing flexible and elastic ceramic materials with high thermal stability to address practical needs in the field of high-temperature thermal insulation, but this remains a significant challenge. In this work, elastic and compressible barium aluminosilicate (BAS) nanofibrous sponges are fabricated through gelation electrospinning and calcination processes. The resulting BAS nanofibrous sponges demonstrate excellent elasticity and compressibility across a temperature range of −196 to 1400 °C and can withstand 1000 compression cycles without structural collapse. Furthermore, they exhibit low thermal conductivity (0.0239 W m-1 K-1), low bulk density (4.42 mg cm-3), and high working temperature. In this sense, our study highlights the great potential of BAS nanofibrous sponges as thermal protective materials in extreme operating environments. © 2025 American Chemical Society.

关键词： Thermal insulation

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Prediction of viscosity of Mg and Al alloy melts by machine learning

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Journal of materials Science 2025年第19期60卷 8133-8147页

作者： Chen, Yunjian Chen, Hongcan Yang, Shenglan Tang, Kai Fu, Yu Liu, Bin Luo, Qun Liu, Jundong Lu, Qi Hu, Bin Li, Qian Chou, Kuo-Chih State Key Laboratory of Advanced Special Steel & School of Materials Science and Engineering & Shanghai Key Laboratory of Advanced Ferrometallurgy Shanghai University Shanghai 200444 China National Engineering Research Center for Magnesium Alloys Chongqing University Chongqing 400044 China SINTEF Industry Trondheim N-7465 Norway Shanghai Li Auto Technology Co. Ltd. Shanghai 201805 China Chongqing Institute of New Energy Storage Materials and Equipment Chongqing 401135 China College of Materials Science and Engineering Chongqing University Chongqing 400044 China National Key Laboratory of Advanced Casting Technologies Chongqing University Chongqing 400044 China

Viscosity is a critical thermophysical property that influences the castability of alloys, but it is hard to be experimentally determined due to the high temperature and easy oxidation. Employing theoretical models to predict the thermodynamic properties of alloys has always been the pursuit goal for alloy design, but there are challenges in predicting multicomponent alloys with traditional theoretical models. In this study, five different machine learning algorithms were used to construct a composition-temperature-viscosity prediction model for multicomponent alloys using 867 sets of viscosity experimental data collected in the literature. The melting temperatures (T) and solute contents of Mg, Al, Cu, Si, and Fe were utilized as model inputs, while the viscosity values were taken as model outputs. The outcomes suggest that the random forest regression (RFR) algorithm delivers excellent predictive performance, with root mean square error (RMSE) on the test set being 0.168 and the coefficient of determination (R²) being 0.984. The Pearson correlation analysis reveals a significant positive correlation between the viscosity and the content of Fe and Cu. On the contrary, Si and Mg exhibit a negative correlation with viscosity. SHapley Additive exPlanations (SHAP) analysis uncovers the critical ranges for input features (T > 1500 K, x_Cu < 21at.%, Fe-free, or x_Si > 3.8at.%) that are significant for the design of low-viscosity alloys. Furthermore, the relation between fluidity and viscosity is investigated and optimized by regulating silicon content and solidification processes, while the established viscosity-composition-temperature mathematical model provides a theoretical basis for predicting and controlling fluidity. © The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature 2025.

关键词： Melting point

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Novel and facile fabrication of hydrophobic sponge for the efficient adsorption of marine crude oil by photothermal conversion

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Polymer 2025年 329卷

作者： Zhang, Di Zhao, Jingyuan Zhang, Tong Yue, Kai Zhao, Ruirui Fu, Hiroshi Zhang, Songnan State Key Laboratory of Advanced Separation Membrane Materials/ School of Chemical Engineering and Technology Tiangong University Tianjin300387 China Ministry of Education Key Laboratory for Advanced Textile Composite Materials/ School of Textile Science and Engineering Tiangong University Tianjin300387 China Co. Ltd. Jiangsu Nantong226000 China

With the acceleration of the globalization of world maritime trade, the oil is largely transported. Whereas, the oil spill inevitably occurs during transportation. This not only causes the waste of energy, but also has a huge impact on the ecology. Therefore, it is imperative to develop efficient adsorbent to recover the leaked crude oil. In this study, a new and facile adsorption material was introduced for the treatment of offshore crude oil leakage. This material combined the hydrophobic modification of polydimethylsililane (PDMS) with the loadings of graphene (GR) and ferriferrous oxide (Fe3O4) over melamine sponge (MS), providing it with excellent hydrophobic/oleophilic and photothermal conversion properties. It revealed that the MS/PDMS/GR + Fe3O4 presented the hydrophobic property with the water contact angle of 147° and superior self-cleaning performance, effectively separating the oil and water mixture with the separation efficiency of up to 99 %. In addition, its excellent photothermal conversion ability converted the light energy into heat energy, reducing the crude oil viscosity and improving the adsorption efficiency. Under one sun illumination (1.0 kW m−2), the adsorption capacity of the MS/PDMS/GR + Fe3O4 for the high viscosity crude oil reached to 20.7 gcrude oil/gsorbent, and the surface temperature of sample was more than 60 °C. This material exhibited excellent recycling properties after 10 adsorption and extrusion cycles, and displayed exceptional photothermal stability during light switch cycles (1.0 kW m−2). This MS/PDMS/GR + Fe3O4 offers novel concepts for designing and developing high-performance sorbents for the ocean oil leakage treatment. © 2025 Elsevier Ltd

关键词： Marine pollution

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Application of biphasic mineralized collagen/polycaprolactone scaffolds in the repair of large load-bearing bone defects: A study in a sheep model

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Journal of Orthopaedic Translation 2025年 52卷 138-149页

作者： Yao, Meng-Xuan Zheng, Jing-Chuan Wang, Hai-Cheng Lv, Hong-Zhi Zhang, Yi-Fan Zhang, Yu-Qin Shi, Tai-Long Zhu, Yan-Ze Zhang, Ying-Ze Wang, Xiu-Mei Chen, Wei Department of Orthopaedic Surgery Third Hospital of Hebei Medical University Hebei Shijiazhuang 050051 China Key Laboratory of Biomechanics of Hebei Province Hebei Shijiazhuang 050051 China NHC Key Laboratory of Intelligent Orthopaedic Equipment Hebei Shijiazhuang 050051 China State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of Education School of Materials Science and Engineering Tsinghua University Beijing 100084 China Hebei Key Laboratory of Integrated Traditional and Western Medicine in Osteoarthrosis Research (Preparing) Cangzhou Hospital of Integrated Traditional Chinese and Western Medicine in Hebei Province China Beijing Allgens Medical Science and Technology Co. Ltd. Beijing 102629 China

Objective: This study aims to evaluate the efficacy of biphasic mineralized collagen/polycaprolactone (bMC/PCL) scaffolds in repairing large load-bearing bone defects, particularly femoral defects, using a sheep model. Methods: The bMC/PCL scaffolds were prepared by combining porous mineralized collagen/polycaprolactone (pMC/PCL) with compact mineralized collagen/polycaprolactone (cMC/PCL). The scaffolds were characterized using scanning electron microscopy to observe the microstructure and compression testing to assess mechanical properties. Twenty female sheep were selected to create a 20 mm femoral defect model, divided into a blank group (no material implanted) and an experimental group (bMC/PCL scaffolds implanted), with 10 sheep in each group. Bone healing and lower limb functional recovery were assessed at 1 month, 3 months, and 6 months postoperatively using Lane-Sandhu scores and visual analog scale scores for lameness. Additionally, bone repair progress was analyzed through X-ray, Micro-CT, and histological analyses. Results: Compared with the blank group, the bMC/PCL scaffold group showed significant improvement in bone defect repair. At 3 and 6 months postoperatively, X-ray, Micro-CT scans, and histological staining indicated stable scaffold integration and gradual new bone formation. The Lane-Sandhu scores in the experimental group were 3.60 ± 0.548 and 4.00 ± 0.707 at 3 and 6 months, respectively, whereas the blank group experienced plate/screw breakage leading to fixation failure, with scores of 1, indicating better bone healing in the experimental group. The lameness scores in the experimental group were 2.71 ± 0.97 and 1.48 ± 0.86 at 3 and 6 months, respectively, significantly lower than those in the blank group (p < 0.0001 and p = 0.0002). Micro-CT analysis showed that bone volume to tissue volume ratio increased from 28.07 ± 9.22 % to 62.02 ± 11.82 %, bone mineral density increased from 0.392 ± 0.032 g/cm³ to 0.583 ± 0.125 g/cm³

关键词： Biphasic mineralized collagen/polycaprolactone bMC/PCL scaffolds Bone healing Femoral defect repair Sheep model Tissue engineering

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Transition metal-based cathode catalysts for Li-CO_(2)batteries

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Journal of Energy Chemistry 2025年第5期104卷 225-253页

作者： Wenqing Ma Mingjuan Gao Jianping Ma Siyu Liu Lishan Yang Yahui Yang Xiangping Chen Tianzhen Jian Institute for Advanced Interdisciplinary Research(iAIR) Collaborative Innovation Center of Technology and Equipment for Biological Diagnosis and Therapy in Universities of ShandongSchool of Chemistry and Chemical EngineeringUniversity of JinanJinan 250022ShandongChina Key Laboratory of Chemical Biology&Traditional Chinese Medicine Research(Ministry of Education of China) National and Local Joint Engineering Laboratory for New Petrochemical Materials and Fine Utilization of ResourcesKey Laboratory of the Assembly and Application of Organic Functional Molecules of Hunan ProvinceKey Laboratory of Light Energy Conversion Materials of Hunan Province CollegeHunan Normal UniversityChangsha 410081HunanChina Nano-Science Center&Department of Chemistry University of CopenhagenCopenhagen 2100Denmark Jinan Preschool Education College Jinan 250307ShandongChina State Key Laboratory of Crystal Materials Shandong UniversityJinan 250100ShandongChina Shandong Sacred Sun Power Sources Co.Ltd. Qufu 273100ShandongChina

The Li-CO_(2)battery has been highly rated as an intriguing technique for balancing the carbon cycle for years,but it is still significantly challenged by the obstacles such as limited reversibility,sluggish kinetics,and poor energy ***,the design and development of advance catalysts that can enhance the kinetics and reversibility of the CO_(2)electrochemical cycling reactions are considered the imperative *** metal-based catalysts are widely considered appealing owing to their unfilled dorbitals,rich and adjustable valences,as well as *** this review,the working mechanism and the key issues of the CO_(2)electrochemical cycling reaction are discussed *** the strategies for composition and structure design of different type of transition metal-based catalysts are highlighted,including their benefits,limitations,and the ways to implement these ***,based on the pioneering research,the perspectives on the challenges and key points for the future development of cathode catalyst are proposed.

关键词： Li-CO_(2)battery Transition metal Cathode catalyst Catalytic mechanism

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Constructing hierarchically ordered structures in PP/POE-g-MAH/GNP composites to achieve simultaneous enhancement of strength and toughness

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Polymer 2025年 328卷

作者： Li, Zhengzhuo Wang, Guomei Tang, Xiran Pan, Yang Ji, Yuan Wu, Hong Guo, Shaoyun State Key Laboratory of Advanced Polymer Materials Sichuan Provincial Engineering Laboratory of Plastic/Rubber Complex Processing Technology Polymer Research Institute of Sichuan University Chengdu610065 China

How to regulate dispersion of graphite nanoplatelet (GNP) in polymers efficiently and further construct hierarchically ordered structures of polymer composites for achieving simultaneous improvement of the strength and the toughness, remains a major challenge. In this work, maleic anhydride grafted polyolefin elastomer (POE-g-MAH) was used as a diluent to prepare a GNP/POE-g-MAH masterbatches via in-situ exfoliation of graphite based on co-milling process with POE-g-MAH. The prepared GNP not only has large lateral size, but also introduces a small number of oxygen-containing groups on the surface to improve the interface interaction with polypropylene (PP)/POE-g-MAH. Furthermore, the hierarchically ordered structures in the PP/POE-g-MAH/GNP composites were successfully constructed under an enhanced extensional and shearing combined force field during multistage stretching extrusion. The PP matrix formed the shish-kebab crystalline structure, while the GNP was uniformly dispersed and highly oriented along the flow direction. Moreover, the POE-g-MAH phase formed fibrous and ribbon-like structures. Benefiting from the hierarchically ordered structures, the PP composites possessed excellent tensile strength (55.7 MPa) and impact strength (43.4 J/m2), increased by 83 % and 933 % compared with pure PP, respectively. The mechanism for synchronized strengthening and toughening of the PP composites is also proposed. This work provides a new strategy for the efficient preparation of GNP and simultaneous enhancement in the strength and toughness of the PP composites. © 2025

关键词： Polymer matrix composites

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Liquid bridge inspired 3D mesh-like nanocellulose aerogel cross-linked by "spot welding"

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Chemical Engineering Journal 2025年 515卷

作者： Hu, Xiaodong Tang, Wang Huang, Fuhua Zhou, Wenchang Feng, Mao Liu, Yanbo Wang, Xiaoxiao Hu, Jinlong Yang, Hai College of Materials and Chemical Engineering Hunan Institute of Engineering Xiangtan411104 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China Textile School Zhejiang Fashion Institute of Technology Ningbo315211 China

In recent years, aerogels based on cellulose nanofibers have attracted much attention. Cellulose nanofibers are prone to be tightly packed by the growth of large ice crystals during the general freezing process, which undoubtedly weakens the nanoscale effects. The original three-dimensional (3 D) mesh-like arrangement of nanofibers could be effectively retained by rapid freezing at ultra-low temperature. However, mesh-like aerogel exhibits poor structural stability due to the weaker interaction between the fibers. Inspired by the liquid bridge, a spot-welded cross-linked 3 D mesh-like bacterial cellulose (BC) aerogel is reported in this study. Polysiloxane particles are applied to construct spot-welded crosslinks at key stress points such as contact points or intersections of fibers. The flowing polysiloxane particles are able to wet and adhere the BC nanofiber bundles, emerging a contact angle of approximately 33°. The force analysis shows that the polysiloxane particles could spontaneously move to the contact points or the intersections between the nanofibers. And the shape of the welding spots varies with the number of fiber bundles and the intersection angle, thus building a variety of liquid bridges with varying shapes. Compared with the traditional honeycomb-like aerogel, the 3 D mesh-like BC aerogel delivers a higher specific surface area and more prominent hydrophilicity. And benefited from the uneven distribution of cross-linked sites, the size effect of the nanofibers and the surface chemistry of cellulose is preserved to a greater extent. Compared with the traditional honeycomb aerogel, the spot-welded cross-linked 3 D mesh-like BC aerogel exhibited more promising prospects in the fields of dye adsorption, emulsion separation and thermal insulation. © 2025 Elsevier B.V.

关键词： Crosslinking

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Facile fabrication of robust, recyclable, and multifunctional composite hydrogel sensor with MXene and cellulose microcrystals

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Industrial Crops and Products 2025年 231卷

作者： Hasan, Md. Zahid Xu, Chuanghua Luo, Lei Motaleb, K.Z.M. Abdul Ahmed, Md Foysal Tan, Sirui Bashar, M.Mahbubul Janutėnienė, Jolanta Yue, Chengfei Tu, Hu Sha, Sha Cai, Guangming Zhang, Ruquan State Key Laboratory of New Textile Materials and Advanced Processing School of Textile Science and Engineering Wuhan Textile University Wuhan430200 China Department of Apparel Merchandising & Management BGMEA University of Fashion & Technology Dhaka1230 Bangladesh Department of Engineering Faculty of Marine Technologies and Natural Sciences Klaipeda University Klaipėda91224 Lithuania Department of Textile Engineering Mawlana Bhashani Science and Technology University Tangail1902 Bangladesh

Conductive hydrogel has garnered significant fascination for its potential as wearable sensor. However, designing a wearable sensor with excellent electrical conductivity, self-healing capability, mechanical strength and recyclability is still difficult to accomplish. Herein, a multifunctional composite hydrogel was fabricated via a one-pot method with cellulose microcrystals (CMCs) and MXene. The introduction of CMCs to the hydrogel composite provided mechanical strength and assisted in homogeneous distribution of MXene resulting the high electrical conductivity. The subsequently prepared conductive composite hydrogel exhibited improved tensile strength (87.4 kPa) and elongation at break (424 %) with optimum composition, outstanding electrical conductivity (1.11 S/cm) and quick electrical self-healing efficiency without external stimuli. The temperature responsiveness of the conductive composite hydrogel was mainly accredited for reducing interfacial thermal resistance ensuing of continuous heat conduction pathways. It also demonstrated the notable fire resistance offering quick fire-warning signals within ∼1 sec. The developed conductive composite hydrogel could monitor subtle human movements efficiently as well as possessed the ability to track human body temperature, indicating effective means of electronic skin (E-skin) for smartphone interfacing. This work introduces a feasible approach in designing an electrically conductive, biodegradable wearable composite hydrogel with potential applications as versatile motion, temperature and fire sensor. © 2025 The Authors

关键词： Microcrystals

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Physically Cross-Linked Silk Fibroin Hydrogel with Rapid Sol–Gel Transition and Enhanced Mechanical Performance

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Macromolecular Rapid Communications 2025年 e2401016页

作者： Niu, Longxing Chen, Shengjia Guo, Xiangshu Feng, Yanfei Wang, Rong Laboratory of Advanced Theranostic Materials and Technology Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Ningbo 315201 China Zhejiang International Scientific and Technological Cooperative Base of Biomedical Materials and Technology Ningbo Cixi Institute of Biomedical Engineering Ningbo 315300 China State Key Laboratory of New Textile Materials and Advanced Processing Technologies College of Textile Science and Engineering Wuhan Textile University Wuhan 430200 China

It remains a great challenge to fabricate physically cross-linked silk fibroin (SF) hydrogels with rapid gelation and robust mechanical properties. In this study, a novel SF hydrogel is obtained by synergistically modulating the SF molecular weight (MW) and the freeze-inducing process, avoiding the use of any exterior additives. First, the effects of MW on the self-assembly behaviors of SF are investigated under physiological temperature. The results demonstrate that high MW SF derived from papain degumming (PSF) facilitates the sol–gel transition with increasing β-sheet content, and contributed to the construction of the hierarchical micro-nanofiber structure. Subsequently, cryo-concentration treatment is applied to further accelerate the gelation process. The resultant PSF (F-PSF) exhibits rapid sol–gel transition (within 1 h), a high compressive modulus (54.2 ± 3.7 kPa), and a high storage modulus (up to 247.9 kPa), which are superior to traditional physically cross-linked SF hydrogels. The relatively low β-sheet content and dense structure endow the F-PSF hydrogels with excellent mechanical flexibility, physiological environmental stability, and long-term mechanical stability. In vitro cellular experiments show that F-PSF hydrogels are beneficial to cell proliferation and spreading. These attractive features enable the physically cross-linked SF hydrogels to be promising for tissue engineering and regenerative medicine. © 2025 Wiley-VCH GmbH.

关键词： cryo-concentration mechanical properties molecular weight rapid gelation silk fibroin hydrogel

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Rapid angiogenic hydrogel nanofiber scaffold promotes random flap regeneration and modulates inflammation

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Wound Repair and Regeneration 2025年第2期33卷 e70028页

作者： Liang, Junyan Zou, Yang Ju, Haiyan Lv, Yonggang State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan China School of Environmental Engineering Wuhan Textile University Wuhan China College of Chemistry and Chemical Engineering Wuhan Textile University Wuhan China

Random skin flaps are commonly used to cover thick skin wounds. However, necrosis frequently occurs when the flap's aspect ratio exceeds 2:1. Promoting angiogenesis and regulating inflammation are essential for treating ischemia–reperfusion injury in random flaps. In this study, calcium-doped silica nanoparticles loaded with deferoxamine (CD) were created through physical adsorption by rapidly mixing biodegradable calcium-doped silica nanoparticles (CS) with deferoxamine (DFO). A gelatin methacryloyl (GM) hydrogel nanofiber scaffold containing 1% (w/v) CD (GM/CD-1) was subsequently produced using electrospinning technology. The GM/CD-1 scaffold showed excellent biocompatibility and significantly promoted flap regeneration in mice, achieving a 96.17 ± 3.17% flap survival rate at 14 days. Additionally, it effectively stimulated hair follicle growth and exhibited an inflammatory-modulating effect. These features suggest that the GM/CD-1 scaffold could be valuable for clinical applications in flap regeneration and other tissue engineering fields. © 2025 The Wound Healing Society.

关键词： calcium-doped silica nanoparticle deferoxamine electrospinning random skin flap vascularization

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