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Biphasic mineralized collagen-based composite scaffold for cranial bone regeneration in developing sheep

Regenerative Biomaterials 2022年第1期9卷 280-293页

作者： Jingchuan Zheng Zhijun Zhao Yongdong Yang Shuo Wang Yonggang Zhao Yang Xiong Shuhui Yang Zhiye Qiu Tianxi Song Chunyang Zhang Xiumei Wang State Key Laboratory of New Ceramics and Fine Processing Key Laboratory of Advanced Materials of Ministry of EducationSchool of Materials Science and EngineeringTsinghua UniversityBeijing 100084China Department of Neurosurgery The First Affiliated Hospital of Baotou Medical SchoolBaotou 014010China Dongzhimen Hospital Affiliated Beijing University of Chinese Medicine Beijing 100700China Beijing Allgens Medical Science and Technology Co. Ltd.Beijing 100176China

Appropriate mechanical support and excellent osteogenic capability are two essential prerequisites of customized implants for regenerating large-sized cranial bone *** porous bone scaffolds have been widely proven to promote bone regeneration,their weak mechanical properties limit the clinical applications in ***,we applied two previously developed mineralized collagen-based bone scaffolds(MC),porous MC(pMC)and compact MC(cMC)to construct a biphasic MC composite bone scaffold(bMC)to repair the large-sized cranial bone defect in developing sheep.A supporting frame composed of cMC phase in the shape of tic–tac–toe structure was fabricated first and then embedded in pMC *** two phases had good interfacial bond,attributing to the formation of an interfacial *** in vivo performance of the bMC scaffold was evaluated by using a cranial bone defect model in 1-month-old *** computed tomography imaging,X-ray scanning and histological evaluation showed that the pMC phase in the bMC scaffold,similar to the pMC scaffold,was gradually replaced by the regenerative bone tissues with comprehensively increased bone mineral density and complete connection of bone bridge in the whole *** cMC frame promoted new bone formation beneath the frame without obvious degradation,thus providing appropriate mechanical protection and ensuring the structural integrity of the *** general,the sheep with bMC implantation exhibited the best status of survival,growth and the repair *** biphasic structural design may be a prospective strategy for developing new generation of cranioplasty materials to regenerate cranial bone defect in clinic.

关键词： mineralized collagen cranial bone defect biphasic composite scaffold,developing sheep

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Gallium-based liquid metals for lithium-ion batteries

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Interdisciplinary materials 2022年第3期1卷 354-372页

作者： Bin-Wei Zhang Long Ren Yun-Xiao Wang Xun Xu Yi Du Shi-Xue Dou College of Chemistry and Chemical Engineering Chongqing UniversityChongqingChina Center of Advanced Energy Technology and Electrochemistry Chongqing UniversityChongqingChina Institute for Superconducting and Electronic Materials Australian Institute of Innovative MaterialsUniversity of WollongongNorth WollongongNew South WalesAustralia State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and EngineeringWuhan University of TechnologyWuhanChina BUAA-UOW Joint Research Centre and School of Physics Beihang UniversityBeijingChina

Lithium-ion batteries(LIBs)are one of the most exciting inventions of the 20th century and have been widely employed in modern *** have powered many of our electronics,such as laptop computers,smartphones,and even large-scale energy storage *** the development of modern technology,next-generation LIBs with higher energy density are in demand.A number of electrode materials with high theoretical capacity,including Sn,Si,Li metal anode,and S cathode materials,have been ***,they usually suffer from structural or interface failure during cycling,limiting their practical ***-based liquid metals(LMs)possess self-healing capability,fluidity,and metallic advantages so they have been employed as self-healing skeletons or interfacial protective layers to minimize the negative impact of volume expansion or dendritic growth on the electrode ***,the features of Ga-based LMs are briefly discussed to indicate their potential for battery *** addition,recent developments on Ga-based LMs applied in LIBs have been summarized,including from the aspects of anodes,cathodes,and ***,future opportunities and challenges for the development of Ga-based LMs in LIBs are highlighted.

关键词： anode cathode electrolyte gallium-based liquid metals lithium-ion batteries

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Recent advances in microenvironment regulation for electrocatalysis

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National Science Review 2024年第12期11卷 38-58页

作者： Zhiyuan Xu Xin Tan Chang Chen Xingdong Wang Rui Sui Zhongbin Zhuang Chao Zhang Chen Chen Engineering Research Center of Advanced Rare Earth Materials Department of Chemistry Tsinghua University Research Institute of Petroleum Processing SINOPEC State Key Lab of Organic-Inorganic Composites Beijing University of Chemical Technology MOE International Joint Laboratory of Materials Microstructure Institute for New Energy Materials and Low-Carbon Technologies School of Materials Science and EngineeringTianjin University of Technology

High-efficiency electrocatalysis could serve as the bridge that connects renewable energy technologies,hydrogen economy and carbon capture/utilization, promising a sustainable future for humankind. It is therefore of paramount significance to explore feasible strategies to modulate the relevant electrocatalytic reactions and optimize device performances so as to promote their large-scale practical *** regulation at the catalytic interface has been demonstrated to be capable of effectively enhancing the reaction rates and improving the selectivities for specific products. In this review we summarize the latest advances in microenvironment regulation in typical electrocatalytic processes(including water electrolysis, hydrogen–oxygen fuel cells, and carbon dioxide reduction) and the related in situ/operando characterization techniques and theoretical simulation methods. At the end of this article, we present an outlook on development trends and possible future directions.

关键词： microenvironment regulation electrical double layer hydrogen electrocatalysis oxygen electrocatalysis CO reduction reaction

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Nanofiber-based polymer electrolyte membranes for fuel cells

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Carbon Energy 2025年第04期 5-39页

作者： Ning Liu Shuguang Bi Yi Zhang Ying Ou Chunli Gong Jianhua Ran Yihuang Chen Yingkui Yang State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University School of Chemistry and Materials Science Hubei Engineering University College of Chemistry and Materials Engineering Wenzhou University

Developing low-cost and high-performance nanofiber-based polyelectrolyte membranes for fuel cell applications is a promising solution to energy depletion. Due to the high specific surface area and one-dimensional long-range continuous structure of the nanofiber, ion-charged groups can be induced to form long-range continuous ion transfer channels in the nanofiber composite membrane, significantly increasing the ion conductivity of the membrane. This review stands apart from previous endeavors by offering a comprehensive overview of the strategies employed over the past decade in utilizing both electrospun and natural nanofibers as key components of proton exchange membranes and anion exchange membranes for fuel cells. Electrospun nanofibers are categorized based on their material properties into two primary groups:（1） ionomer nanofibers, inherently endowed with the ability to conduct H+(such as perfluorosulfonic acid or sulfonated poly（ether ether ketone）) or OH-（e.g., FAA-3）, and（2） nonionic polymer nanofibers, comprising inert polymers like polyvinylidene difluoride, polytetrafluoroethylene,and polyacrylonitrile. Notably, the latter often necessitates surface modifications to impart ion transport channels, given their inherent proton ***, this review delves into the recent progress made with three natural nanofibers derived from biodegradable cellulose—cellulose nanocrystals,cellulose nanofibers, and bacterial nanofibers—as crucial elements in polyelectrolyte membranes. The effect of the physical structure of such nanofibers on polyelectrolyte membrane properties is also briefly discussed. Lastly, the review emphasizes the challenges and outlines potential solutions for future research in the field of nanofiber-based polyelectrolyte membranes, aiming to propel the development of high-performance polymer electrolyte fuel cells.

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Porous Cellulose Acetate/Tio2 Nanofluids Fibrous Membrane for High Sweat Evaporation Ability, Passive Daytime Radiative Cooling and Energy Harvesting

SSRN

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SSRN 2023年

作者： Xu, Mei Fu, Xinming Chen, Zhicheng Zheng, Long Song, Yiheng Wang, Jinfeng Wen, Xianjie Yin, Xianze College of Materials Science and Engineering National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan Textile University Wuhan430200 China Department of Anesthesiology The Second People’s Hospital of Foshan City Guangdong Province Foshan528000 China State Key Laboratory of New Textile Materials & Advanced Processing Technology Wuhan Textile University 430200 China Wuhan Textile University China

Radiant refrigeration textiles with passive personal thermal management have become a convenient, economical and energy-saving method for outdoor human thermal comfort. Existing passive radiative cooling textiles are primarily manufactured from synthetic polymers and often lack moisture management functionality. In this paper, titanium dioxide was prepared into solvent-free fluid and then wrapped into cellulose acetate membrane by electrospinning. This fabric integrates passive radiative cooling and sweat evaporation functions using an extensible electrospinning technique. Due to effective scattering, CA's molecular vibration and the solvent-free nanofluids’ phonon-polariton resonance, this CA/TiO2 nanofluids (nfs) membrane shows a high solar reflectance of 0.92 and a high emittance of 0.85, which demonstrates significant radiative cooling performance under clear sky conditions. It can be utilized not only for cooling buildings and vehicles but also provides additional capabilities for absorbing sweat and facilitating evaporation due to its hydrophilicity. The nanofiber textile reduces the temperature of the covered area by 8 °C when exposed to direct sunlight outside. In addition, this membrane also exhibits excellent triboelectric properties (power density 77 mW/m2), making it promising for use in the field of energy harvesting. Combined with many advantages such as biodegradability, high radiation refrigeration, efficient perspiration and triboelectric properties, these CA/TiO2 nfs composite membranes will be effective textiles for passive personal thermal management. © 2023, The Authors. All rights reserved.

关键词： Energy harvesting

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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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Wool Powder Assisted Colorimetric Sensing Yarn with High Sensitivity for Nh3 Monitoring

SSRN

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SSRN 2024年

作者： Zhu, Xixi Li, Yuying Tang, Wenyang Cui, Yongming Zhu, Kunkun Wang, Jinfeng Zeng, Beini Wang, Xungai Wuhan Textile University National Local Joint Laboratory for Advanced Textile Processing and Clean Production Wuhan430200 China The Hong Kong Polytechnic University School of Fashion and Textiles Research Center of Textiles for Future Fashion Hong Kong999077 Hong Kong State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan430200 China Wuhan Textile University China

Colorimetric sensors have applications in gas monitoring due to their simple and quick detection through visible color changes. However, it remains challenging to prepare colorimetric sensors with high sensitivity. Herein, this work fabricated a biomass-based colorimetric sensing yarn with high sensitivity using anthocyanins as the colorimetric dye and wool powder as an effective ammonia (NH3) adsorbent. The sensitivity of the prepared yarns was evaluated for detection limit and response time. Surprisingly, the addition of 3% wool powder greatly improved the sensitivity of the prepared yarns, with a reduction of both detection limit and responsive time from 100 ppm to 20 ppm, and 2 min to 20 s, respectively when exposed in 150 ppm NH3. The prepared yarns also showed good selectivity and reusability. An example of the practical use of colorimetric yarns was presented. This work provides a facile strategy for fabricating wearable devices for toxic gas monitoring with visual output. © 2024, The Authors. All rights reserved.

关键词： Yarn

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Cu@Cu2s Core-Shell Heterostructure Nanowires Electrocatalysts for Highly Efficient Sulfion Oxidation-Assisted Hydrogen Production

SSRN

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SSRN 2025年

作者： Zhou, Ming Zhang, Hongling Guo, Jiangna Yang, Mengqi Li, Xingyu Luo, Sen Liu, Guanyu Weng, Ruixue Xiao, Peng Cui, Xun Ma, Chaowei Dong, Xiaoyu Yang, Wenjing Zhang, Yunhuai College of Chemistry and Chemical Engineering Chongqing University Chongqing400031 China College of Physics Chongqing University Chongqing400031 China State Key Laboratory of New Textile Materials and Advanced Processing Wuhan Textile University Wuhan430200 China Xinjiang Key Laboratory of New Energy Materials and Green Chemical Engineering Xinjiang Institute of Engineering Xinjiang830023 China

Electrocatalytic sulfur oxidation-assisted hydrogen evolution is a promising method that can efficiently degrade sulfur ions in recovered waste water while cost-effectively producing hydrogen. However, it still remains a great challenge to develop efficient and stable electrocatalysts with a well-defined heterointerface and high sulfur tolerance. Herein, we present a facile and liquid-phase approach to synthesis Cu@Cu2S core-shell heterostructure nanowires derived from copper nanowires at room temperature for robust sulfide oxidation reaction (SOR)-assisted H2 generation. The Cu@Cu2S core-shell heterostructure nanowires exhibit superior SOR activity with an ultralow potential of 0.3 V (vs. RHE) at a current density of 100 mA cm−2. More importantly, the assembled hybrid system with Cu@Cu2S displays remarkable durability over 216 h with negligible activity decay. Combined with the experimental characterizations and theoretical calculations, it was demonstrated that Cu@Cu2S core-shell heterostructure nanowires possessed reduced transition energy barriers in the rate-determining *S3 to *S4 oxidation step and a higher integrated density of states, significantly optimizing adsorption/desorption energy of sulfur intermediates, thereby greatly boosting the catalytic activity and alleviating the sulfur poisoning. Our findings provide a new strategy to develop core-shell heterostructure electrocatalysts with substantially enhanced activity and stability. © 2025, The Authors. All rights reserved.

关键词： Nanowires

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S-Scheme Homojunction and Activate Site Engineering Over Tio2 for Highly Efficient Photocatalytic Nitrogen Fixation

SSRN

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SSRN 2023年

作者： Wang, Yongchao Li, Zhen Zhu, Huiling Xu, Xiangran Zeng, Zhaowu Liu, Xiaoyi Wang, Huan Gong, Mingxing Liu, Xueqin Wang, Yang Faculty of Materials Science and Chemistry China University of Geosciences Wuhan430074 PR China State Key Laboratory of New Textile Materials and Advanced Processing Technologies Wuhan Textile University Wuhan430200 PR China

The presence of efficient catalytic active sites and an ample supply of electrons are the two indispensable factors for achieving photocatalytic nitrogen fixation. Herein, the Fe-doped TiO2 S-scheme anatase/rutile homojunction (F-T-A/R) was synthesized as a brilliant photocatalyst for photocatalytic nitrogen fixation from N2 to NH3 under ambient atmosphere. The optimized F-T-A/R photocatalyst (A/R = 98:2, Fe-2wt%) exhibits an unprecedented NH3 generation rate of 358 μmol gcat-1 h-1 in water solvent and under simulated solar light irradiation. Experimental and theoretical studies reveal that the constructed S-scheme homojunction in F-A/R-TiO2 is conducive to fluent charge separation and adequate supply of electrons on rutile with higher nitrogen fixing activity, while the tuned local electronic structure of oxygen vacancy with Fe doping is engineered to strengthen active sites, synergistically enhancing the photocatalytic nitrogen fixation. © 2023, The Authors. All rights reserved.

关键词： Titanium dioxide

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Information Express of Soft Bionic Finger Based on Visual Recognition

Information Express of Soft Bionic Finger Based on Visual Re...

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IEEE International Conference on Cyborg and Bionic Systems (CBS)

作者： Sai Li Jiarun Wang Xinpeng Li Zixin Huang School of Electrical and Information Engineering Wuhan Institute of Technology Wuhan China Hubei Key Laboratory of Digital Textile Equipment Wuhan Textile University Wuhan China Ministry of Education Key Laboratory of Textile Fiber and Products (Wuhan Textile University) Wuhan China State Key Laboratory of New Textile Materials and Advanced Processing Technologies (Wuhan Textile University) Wuhan China

Soft robots have developed rapidly because of their own structure, adaptability and safety, which can be applied in different fields. However, the human robot interaction of soft robots faces enormous challenges. In this paper, we take the soft bionic finger (SBF) as the research object, design a multi chamber SBF, and propose a visual recognition to drive SBF. The bending information of the finger is converted into the information of driving air pressure, and drive the SBF. The SBF can simulate the bending of human finger and replace human finger to express some information. Finally, in the visual bending experiment, it is verified that the error between the bending angle of the human finger and the bending angle of the SBF is within a certain allowable range. It shows the feasibility of driving SBF to express information based on visual recognition, and also reflects strong human robot interaction.

关键词： Deformable models Visualization Computational modeling Fingers Human-robot interaction Bending Soft robotics

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