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Amine-assisted synthesis of FeS@N-C porous nanowires for highly reversible lithium storage

Nano Research 2018年第12期11卷 6206-6216页

作者： Xiujuan Wei Xin Tan Jiasheng Meng XuanpengWang Ping Hu Wei Yang Shuangshuang Tan Qinyou An Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China

Iron sulfide is an attractive anode material for lithium-ion batteries (LIBs) due to its high specific capacity, environmental benignity, and abundant resources. However, its application is hindered by poor cyclability and rate performance, caused by a large volume variation and low conductivity. Herein, iron sulfide porous nanowires confined in an N-doped carbon matrix (FeS@N-C nanowires) are fabricated through a simple amine-assisted solvothermal reaction and subsequent calcination strategy. The as-obtained FeS@N-C nanowires, as an LIB anode, exhibit ultrahigh reversible capacity, superior rate capability, and long-term cycling performance. In particular, a high specific capacity of 1,061 mAh·g⁻¹ can be achieved at 1 A·g⁻¹ after 500 cycles. Most impressively, it exhibits a high specific capacity of 433 mAh·g⁻¹ even at 5 A·g⁻¹. The superior electrochemical performance is ascribed to the synergistic effect of the porous nanowire structure and the conductive N-doped carbon matrix. These results demonstrate that the synergistic strategy of combining porous nanowires with an N-doped carbon matrix holds great potential for energy storage.

关键词： iron sulfide N-doped carbon matrix porous nanowires lithium-ion batteries superior cycling stability

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Confined Ultrafine Pt in Porous Carbon Fibers and Their N-Enhanced Heavy d-π Effect

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Chemistry of materials 2022年第8期34卷 3705-3714页

作者： Yu-Xuan Xiao Jie Ying Jiang-Bo Chen Yuan Dong Xiong Yang Ge Tian Jinsong Wu Christoph Janiak Kenneth I. Ozoemena Xiao-Yu Yang School of Chemical Engineering and Technology Sun Yat-sen University Zhuhai 519082 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & NRC (Nanostructure Research Centre) Wuhan University of Technology Wuhan 430070 China Institut für Anorganische Chemie und Strukturchemie Heinrich-Heine-Universität Düsseldorf Düsseldorf 40204 Germany Molecular Sciences Institute School of Chemistry University of the Witwatersrand Johannesburg 2050 South Africa School of Engineering and Applied Sciences Harvard University Cambridge Massachusetts 02138 United States

The heavy d-π effect is an important theoretical model for strong Pt–C interaction, and its enhancement is critical to the high-performance design of Pt/C electrocatalysts. Common chemical N-doping to the carbon support can provide possibilities for enhanced electrocatalysis but most often leads to random interaction with Pt nanoparticles (Pt-NPs) and uncontrollable tuning of the heavy d-π effect. Directional confinement of Pt-NPs within N-doped carbon to directly enhance the heavy d-π effect is therefore mostly preferred but rarely reported. Herein, confined ultrafine Pt-NPs in N-doped porous carbon fibers (Pt@NDPCF) were obtained by a combination method involving electrospinning, carbonization, and directional replacement. Such a synthetic strategy leads to highly dispersed, ultrafine Pt-NPs in hierarchically porous carbon fibers and a strong directional interaction of Pt with pyridinic N, which significantly enhances the heavy d-π effect, greatly facilitating electron transfer and optimizing Pt 5d orbitals. Based on these advances, Pt@NDPCF exhibited outstanding activity and superior durability in the hydrogen evolution reaction (HER), with 24 mV lower overpotential at 10 mA cm–2and a much smaller activity loss after 10,000 cycles of durability tests in comparison with a commercial Pt/C catalyst. This work sheds new lights on the design of high-performance Pt-based nanomaterials toward HER or other practical applications.

关键词： Carbon Carbon fiber Evolution reactions Metal organic frameworks Platinum

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Revealing the Interfacial Chemistry of Fluoride Alkyl Magnesium Salts in Magnesium Metal Batteries

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Angewandte Chemie 2023年第21期135卷

作者： Juncai Long Dr. Shuangshuang Tan Junjun Wang Dr. Fangyu Xiong Lianmeng Cui Prof. Qinyou An Prof. Liqiang Mai State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 China College of Materials Science and Engineering Chongqing University Chongqing 400030 China Wuhan University of Technology (Xiangyang Demonstration Zone) Xiangyang 441000 China

Exploring promising electrolyte-system with high reversible Mg plating/stripping and excellent stability is essential for rechargeable magnesium batteries (RMBs). Fluoride alkyl magnesium salts (Mg(OR F ) 2 ) not only possess high solubility in ether solvents but also compatible with Mg metal anode, thus holding a vast application prospect. Herein, a series of diverse Mg(OR F ) 2 were synthesized, among them, perfluoro-tert-butanol magnesium (Mg(PFTB) 2 )/AlCl 3 /MgCl 2 based electrolyte demonstrates highest oxidation stability, and promotes the in situ formation of robust solid electrolyte interface. Consequently, the fabricated symmetric cell sustains a long-term cycling over 2000 h, and the asymmetric cell exhibits a stable Coulombic efficiency of 99.5 % over 3000 cycles. Furthermore, the Mg||Mo 6 S 8 full cell maintains a stable cycling over 500 cycles. This work presents guidance for understanding structure–property relationships and electrolyte applications of fluoride alkyl magnesium salts.

关键词： Electrolyte Fluoride Alkyl Magnesium Salts Rechargeable Magnesium Batteries Solid Electrolyte Interface

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Optimizing Porous Structure of Carbon Electrodes for Temperature-Independent Capacitance to Realize High Energy Storage and Ultrafast Charge/Discharge Process at Sub-Zero Temperatures

SSRN

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SSRN 2022年

作者： Liu, Jin Li, Xiaoxiao Jin, Bing Tang, Haolin Ma, Liya Zhang, Ruiming Ran, Jiabing Zhang, Haining State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Foshan Xianhu Laboratory of the Advanced Energy Science and Technology Guangdong Laboratory Foshan528200 China Institute of Molecular Sciences and Engineering Institute of Frontier and Interdisciplinary Science Shandong University Qingdao266237 China The Centre of Analysis and Measurement of Wuhan University Wuhan University Wuhan430072 China College of Biological & Pharmaceutical Sciences China Three Gorges University Yichang443002 China

Fundamental understanding of ion transport in porous carbon materials with different pore size is of great importance for carbon electrode-based supercapacitors to realize the ability of rapid charge/discharge process and high energy density at wide operating temperatures. Herein, hierarchically porous carbon frameworks are synthesized as model electrodes by using a tunable one-pot strategy in the presence of salt template and pore-forming agent. Density functional theory calculation reveals that the size of micropores can significantly influence the solvation energy and desolvation time of electrolyte, thereby affecting the ion transport kinetics and the specific capacitance of porous carbon electrode, particularly at low temperatures. The accordingly optimized carbon electrode material with rational micropore size and interconnected hierarchical pores exhibits the specific capacitance of 200 and 245 F·g -1 at - 40 and 60 ºC, respectively. The as-fabricated symmetric supercapacitor can deliver an exceptional energy density of 63.4 Wh·kg -1 under power density of 1.5 kW·kg -1 at - 40 ºC. In addition, the device has the ability for fast charge/discharge process at low temperature, as evidenced by the energy density of 34.3 Wh·kg -1 under an ultrahigh power density of 37.5 kW·kg -1 at − 40 ºC. © 2022, The Authors. All rights reserved.

关键词： Supercapacitor

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Non-invasive flexible sensor based on liquid metal for human physiological detection

Next Nanotechnology

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Next Nanotechnology 2024年 5卷

作者： Zixuan Guo Gengcheng Liao Long Ren Hui Qiao Zongyu Huang Ziyu Wang Xiang Qi Hunan Key Laboratory for Micro-Nano Energy Materials and Devices and School of Physics and Optoelectronic Xiangtan University Hunan 411105 PR China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing International School of Materials Science and Engineering Wuhan University of Technology Hubei 430000 PR China Suzhou Institute of Wuhan University Suzhou 215125 PR China

Flexible sensors play an important role in simulation, brain-computer interaction, intelligent robots, and biological detection. Due to the progress of modern medical means, the construction of wearable flexible sensors to realize remote and continuous monitoring of human physical indicators and physiological parameters has become a hot research topic. Non-invasive sensor is a device that can detect physiological parameters without cutting the skin or puncturing the body. They have wide application prospects in the fields of medical treatment, fitness, and daily care due to the following advantages: real-time monitoring, portability, accuracy, and cost reduction. Liquid metal has become a great candidate for constructing flexible biosensors because of its high conductivity, deformability, self-healing, and bio-friendly properties, its spontaneous formation of an oxide film due to exposure to oxygen provides a convenient reaction platform for the preparation of other materials. Two-dimensional materials are inherently superior in preparing sensors due to their great advantages unique chemical and physical properties, their high surface area-to-volume ratios and ultra-high surface sensitivity to the environment also can be used to prepare flexible sensor. This study presents an overview and introduction of biosensors fabricated by liquid metal and two-dimensional materials, including how to prepare specific two-dimensional materials based on liquid metal, and the stripping method is also included. Three kinds of applications are discussed in detail, including the detection of human glucose concentration, pulse detection, and sweat analysis, whose sensing principles depend on piezoelectric, optical, and electrochemical. At the end of the article, we summarized the current challenges faced by biosensors based on liquid metal and looked forward to its future development and future directions of advances.

关键词： Liquid metal Two-dimensional materials Non-invasive Flexible sensor Sensing principles

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A New Type of Nanogel Carrier based on Mixed Pluronic Loaded with Low-Dose Antitumor Drugs

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Journal of Wuhan University of technology(materials Science) 2019年第4期34卷 960-967页

作者： YIN Meizhen YU Xin School of Medicine Hubei Polytechnic UniversityHuangshi 435003China School of Medicine Inner Mongolia University for NationalitiesInner Mongolia Tongliao 028000China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing and Biomedical Materials and Engineering CenterWuhan University of TechnologyWuhan 430070China

To design a new type of antitumor nanodrug carrier with good biocompatibility, a drug delivery system with a 2.19% drug-loading rate, measured by high-performance liquid chromatography(HPLC), was prepared by membrane hydration using a mixed polymer: Pluronic■ F-127, which binds folic acid(FA), Pluronic■ F-68 and triptolide(TPL)(FA-F-127/F-68-TPL). As a control, another drug delivery system based on a single polymer(FA-F-127-TPL) with a 1.90% drug-loading rate was prepared by substituting F-68 with F-127. The average particle sizes of FA-F-127/F-68-TPL and FA-F-127-TPL measured by a particle size analyzer were 30.7 nm and 31.6 nm, respectively. Their morphology was observed by atomic force microscopy(AFM). The results showed that FA-F-127-TPL self-assembled into nanomicelles, whereas FA-F-127/F-68-TPL self-assembled into nanogels. An MTT assay showed that a very low concentration of FA-F-127/F-68-TPL or FA-F-127-TPL could significantly inhibit the proliferation of multidrug-resistant(MDR) breast cancer cells(MCF-7/ADR cells) and induce cell death. The effects were significantly different from those of free TPL(P < 0.01). Using the fluorescent probe Nile red(Nr) as the drug model, FA-F-127/F-68-Nr nanogels and FAF-127-Nr nanomicelles were prepared and then incubated with human hepatocarcinoma(HepG2) and MCF-7/ADR cells, and the fluorescence intensity in the cells was measured by a multifunctional microplate reader. The results indicated that both FA-F-127/F-68-Nr and FA-F-127-Nr had sustained release in the cells, but HepG2 and MCF-7/ADR cells exhibited significantly higher endocytosis of FA-F-127/F-68-Nr than that of FA-F-127-Nr(P < 0.01). A nude mice transplanted tumor model was prepared to monitor FA-F-127/F-68-Nr in the tumor tissue and organs by whole-body fluorescent imaging. The results showed that FA-F-127/F-68-Nr targeted tumor tissues. The prepared nanogels had small particle size, were easy to swallow, exhibited slow release property,targeted tumor cells, a

关键词： pluronic nanogels nanodrug carriers triptolide

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In-situ chloride/potassium passivated ZnO nanocrystals for improved charge extraction in PbS quantum dot solar cells

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Journal of Colloid and Interface Science 2025年 698卷 138108页

作者： Zeng, Tao Wang, Lijing Guo, Zhangwang Shi, Yuxing Chen, Yunxia Dong, Gang Li, Wei Meng, Lingju National Engineering Research Center for Domestic & Building Ceramics School of Materials and Engineering Jingdezhen Key Laboratory of Environmental Ceramics Jiangxi Key Laboratory of Advanced Ceramic Materials Jingdezhen Ceramic University Jingdezhen333403 China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China Changchun Institute of Optics Fine Mechanics and Physics Chinese Academy of Sciences Changchun130033 China Department of Chemistry and Materials Science Aalto University Espoo02150 Finland

Electron transport layers comprising colloidal ZnO nanocrystals are commonly utilized in PbS quantum dot solar cells. However, the presence of surface defects induced by oxygen vacancies and surface hydroxyls poses a significant obstacle to high-performance device. Consequently, there is an urge for realizing ZnO nanocrystals with reduced surface defects. Herein, we developed an in-situ passivation strategy for synthesizing ZnO nanocrystals, denoted as Cl/K-ZnO, with suppressed surface defects by Cl/K ions. The integration of the Cl/K-ZnO electron transport layer into the photovoltaics has led to a remarkable decrease in surface defects and reasonable energy band alignment for better carrier extraction. Accordingly, we achieved the efficient photovoltaics with a champion power conversion efficiency of 11.17 % and an impressive operational stability, retained 83 % of the initial power conversion efficiency after an operation period of 200 h under AM 1.5 G illumination in N2 glovebox. © 2025 Elsevier Inc.

关键词： II-VI semiconductors

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575-fs passively mode-locked Yb:CaF2 ceramic laser

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Chinese Physics B 2020年第7期29卷 326-330页

作者： Cong Wang Qian-Qian Hao Wei-Wei Li Hai-Jun Huang Shao-Zhao Wang Da-Peng Jiang Jie Liu Bing-Chu Mei Liang-Bi Su Shandong Provincial Engineering and Technical Center of Light Manipulations&Shandong Provincial Key Laboratory of Optics and Photonic Device School of Physics and ElectronicsShandong Normal UniversityJinan 250358China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070China School of Science Wuhan University of TechnologyWuhan 430070China Synthetic Single Crystal Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201800China Key Laboratory of Transparent and Opto-functional Inorganic Materials Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 201800China

A Yb-doped CaF2 transparent ceramics was successfully fabricated by the hot-pressed method and its laser characteristics were studied.A broad tuning performance and mode-locked laser operation were demonstrated in this ceramics for the first time,to our best knowledge.A 60-nm continuous-wavelength tunable laser from 1019 nm to 1079 nm was obtained with a birefringent *** employing a semiconductor saturable absorber mirror without additional dispersion compensation elements,a continuous-wave mode-locked laser with pulse duration as short as 575 fs was delivered,at a central wavelength of 1048.5 *** oscillator is operated under a repetition rate of 55 *** results indicate that the Yb:CaF2 transparent ceramics is an ideal candidate for the development of ultrafast lasers in the near-infrared regime.

关键词： mode-locking tunable transparent ceramics solid-state lasers

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MOF-derived ZnO/PANI S-scheme heterojunction for efficient photocatalytic phenol mineralization coupled with H 2 O 2 generation

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Acta Physico-Chimica Sinica 2025年第10期41卷

作者： Bowen Liu Jianjun Zhang Han Li Bei Cheng Chuanbiao Bie State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan 430070 Hubei Province China Laboratory of Solar Fuel Faculty of Materials Science and Chemistry China University of Geosciences 68 Jincheng Street Wuhan 430078 Hubei Province China School of Automotive Materials Hubei University of Automotive Technology Shiyan 442020 Hubei Province China

Complete mineralization of persistent organic pollutants in wastewater remains a formidable challenge. Here, we report the rational design of a ZIF-8-derived ZnO/polyaniline (PANI) S-scheme heterojunction synthesized via in situ oxidative polymerization. advanced characterizations confirm the S-scheme charge transfer mechanism within the ZnO/PANI heterojunction. The optimized composite achieves complete phenol mineralization within 60 min while concurrently generating H 2 O 2 at a rate of 0.75 mmol∙L −1 ·h −1 under simulated solar irradiation. Mechanistic studies verify that the S-scheme heterojunction retains strong redox potentials, driving the formation of reactive oxygen species for H 2 O 2 production and phenol degradation. This work establishes a universal design paradigm for MOF-derived inorganic/organic S-scheme heterojunctions, effectively coupling solar-driven energy conversion with environmental remediation.

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Multi-crosslinked network magnesium phosphate bone cement with high flexural properties

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Ceramics International 2025年

作者： Gao, Zijie Liu, Jiawei Zhang, Mingjiang Chen, Pengfei Goto, Takashi Tu, Rong Dai, Honglian State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of Technology Wuhan430070 China National Energy Key Laboratory for New Hydrogen-ammonia Energy Technologies Foshan Xianhu Laboratory Foshan528200 China New Industry Creation Hatchery Center Tohoku University Sendai980-8579 Japan

Magnesium phosphate cement (MPC) is a bone repair material with good early strength, but its low flexural strength limits its application in bone defect regions subjected to multi-directional loads and repeated stresses. Traditional strategies for reinforcing inorganic bone cement, such as lamination, provide excellent mechanical strength but result in the deterioration of other properties. For instance, the reduction in injectability makes it difficult for the bone cement to fill irregular bone defect sites. Therefore, developing a bone cement with high strength, good operability, and biological activity remains a significant challenge. This study aimed to construct a triple-cured gel-based bone cement by incorporating polyurethane-sodium alginate (EPU-SA) emulsion into magnesium phosphate bone cement (TMPC), forming a structurally more continuous and stable interpenetrating triple network composite system (ES-T) during the hydration process. The in-situ reinforcement of TMPC was achieved through the dual effects of physical and chemical interactions. The results showed that the flexural strength of ES-T under humid conditions was 214 % higher than that of TMPC, reaching 50.5 MPa. Interface analysis between organic and inorganic components confirmed the bonding mechanism between the emulsion and bone cement and clarified the reinforcement mechanism. In addition, ES-T demonstrated promotive effects on cellular osteogenic differentiation and generation of new bone tissue by in vitro and in vivo experiments. © 2025 Elsevier Ltd and Techna Group S.r.l.

关键词： Bone cement

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