Journal of Materials Chemistry A
·
2016
·Vol. 4
·期 25
·9881-9889
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IF 8.262
Hailong Lyu,Jiurong Liu,Song Qiu,Yonghai Cao,Chenxi Hu,Shimei Guo,Zhanhu Guo
Carbon composite fibers with Fe3O4, Fe3C, and TiO2 nanoparticles (Fe3O4/Fe3C/TiO2/C) were successfully fabricated using a facile dry-spinning approach, followed by annealing under argon flux. When used as the anode material of a lithium-ion battery, the Fe3O4/Fe3C/TiO2/C composite fibers achieved a reversible capacity of 702.1 mA h g−1 after 400 cycles at a current density of 100 mA g−1 and ca. 200 mA h g−1 at a current density of 1000 mA g−1 in 350 cycles. The superior cycling performance and high rate capability were attributed to the high theoretical specific capacity of Fe3O4, the catalytic activity of Fe3C, the structural stability of TiO2, and the buffer function of carbon fiber. Compared with the corresponding Fe3O4/Fe3C/C and TiO2/C composite fibers, the Fe3O4/Fe3C/TiO2/C product exhibited higher cycling and rate performances due to the synergetic effect among the Fe3O4, Fe3C, TiO2 and carbon components.
研究领域:
材料科学
·
能源科学
✓ 已验证
产品关联
DOI
高影响因子
Frontiers in Chemistry
·
2024
·
IF 3.8
Chengzhi Liang,Zaiwei Fan,Yudan Zhu,Yuan Cao,Jiawei Kang,Jun Tao
Introduction: Two-dimensional (2D) MXene, recognized for its outstanding physical and chemical properties,has gained attention as a promising material in the biomedical field. However, its potential in tissue engineering applications remains underexplored. This study focuses on synthesizing SF-MXene composite electrospun fibers and evaluating their suitability for biomedical applications.Methods: SF-MXene composite electrospun fibers were prepared through electrospinning. The fibers were characterized using field emission scanning electron microscopy (FE-SEM), Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), mechanical testing, thermogravimetric analysis (TGA), and contact angle measurements.Protein adsorption capacity and biomineralization potential were assessed. Biocompatibility was evaluated using fibroblasts (L929) and preosteoblasts (MC3T3-E1), with alkaline phosphatase (ALP) activity measured in MC3T3-E1 cells to determine osteogenic potential.Results: The SF-MXene composite fibers exhibited well-defined morphological and structural properties, as confirmed by FE-SEM, FTIR, XRD, and TGA analyses. Mechanical testing revealed enhanced mechanical stability. The fibers showed high protein adsorption and potential biomineralization activity. Both L929 and MC3T3-E1 cells displayed high viability on the composite fibers, with significantly increased ALP activity in MC3T3-E1 cells, indicating osteogenic potential.Discussion: The findings demonstrate that SF-MXene composite fibers possess excellent structural, mechanical, and biological properties suitable for tissue engineering. The fibers’ ability to support cell viability, protein adsorption, and osteogenic activity highlights their potential in biomedical applications, particularly in bone tissue regeneration. These results suggest that MXene-based composites could be developed further for broader biomedical uses.
研究领域:
生物材料学
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组织工程学
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY AND BUILDINGS
·
2024
·
IF 6.6
Yan Zhang,Wenjing Qin,Yanli Wang,XinXin Li,Changshun Gu,Mengyao Chen,Xiujie Guo,Hengchao Liu,Boxin Zhao
With the frequent occurrence of extreme climates, passive daytime radiant cooling (PDRC) and passive daytime radiant heating (PDRH) technologies are receiving more and more attention as green and sustainable ways to regulate temperature. Here we present a Janus composite porous fiber membrane (MXene@PVDF/TPU), prepared by controlling the ratio of two components, PVDF and TPU, in the electrospinning precursor solution, to regulate the optical, mechanical, and other properties of the fiber membrane. By spraying MXene on one side of the fiber membrane, we achieve radiative heating performance, while the side without MXene spraying exhibits radiative cooling performance. Switching between cooling and heating modes can be accomplished by simply flipping the composite fiber membrane. The cooling side of the fiber membrane has high solar reflectance (93.75 %) and mid-infrared emissivity (83.09 %), and can cool the ambient temperature up to 8.2 °C at noon. At the same time, the heating side of the fiber membrane has low reflectance (14.18 %) and mid-infrared emissivity (24.22 %), and can heat the environment up to 7.4 °C at noon. Besides, due to the electrical and thermal properties of MXene, the MXene@PVDF/TPU fiber membrane exhibits excellent Joule heating characteristics, which can effectively compensate for the PDRH. Switching between the modes of cooling and heating can be achieved by a simple flip of the composite fiber membrane, which is important to reduce carbon emissions to alleviate the energy crisis.
研究领域:
材料科学
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环境科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2012
·
IF 1.099
Delong Li,Chunxu Pan
A process to fabricate a kind of novel micro–nano scaled TiO 2 /CuS composite fibers by electrospinning technique and chemical precipitation method was developed in the present study. The microstructures and photoelectronic properties of the fibers were characterized using SEM, FT-IR, UV–vis and fluorescence spectroscopy. The results revealed that the TiO 2 portion in the composite fibers was a mixture rutile and anatase phases while TiO 2 and CuS had been fully composite. The fibers had smooth surface with a diameter of 50–300 nm. Comparing with pure TiO 2 fiber, the TiO 2 /CuS micro–nano-scaled composite fibers exhibited a strong absorption in the visible light region and the efficiency of photo-induced charge separation were enhanced. This composite system is of widely potential applications in the areas such as solar cells, supercapacity, photocatalysis, etc.
研究领域:
材料科学
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纳米技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2024
·
IF 7.1
Zixiang Chen,Lihua Zhang,Yuanlong Guo,Jili Yuan,Tianlong He,Haibo Xie
With over 20 years of continued development of ionic liquids (ILs) for natural polymer processing and conversion, the design and facile preparation of ILs is still a hot research topic. In this study, a hydrogen bonding acceptor strengthening strategy was applied to design ether functionalized protic ILs, which were synthesized by a solvent-free neutralization reaction of methoxyacetic acid (Mea) and 1,5-diazabicyclo [4.3.0]-5-nonene (DBN). The ether-functionalized protic ILs ([DBNH][Mea]) were identified as a satisfactory solvent for the simultaneous dissolution of silk fibroin (SF) and cellulose at mild conditions, thus delivering a new dissolution processing platform toward value-added SF-based regenerated fiber materials. The strengthened simultaneous dissolution mechanism of SF and cellulose in [DBNH][Mea] by the introduction of an ether structure moiety in the anion was experimentally and computationally verified, and the results indicated that the ether structure moiety endowed it with more hydrogen-bonding acceptor sites, thus presenting stronger hydrogen-bonding disruption ability and outstanding solubility to SF and cellulose under mild conditions. Rheological study of the SF/cellulose/[DBNH][Mea]/DMSO solutions was conducted systematically, and the correlations between apparent viscosity (η), activation energy (Εη), overlap concentration (c*), structural viscosity index (Δη), storage modulus (G′) and loss modulus (G′′) of the solutions were highly correlated to the mass ratio of SF to cellulose. A series of SF/cellulose composite fibers were prepared by wet spinning using ethanol as the coagulation bath, and the obtained composite fibers were analyzed by Fourier transform infrared (FTIR), X-ray diffraction (XRD), elemental analysis, thermogravimetric analysis (TGA) and scanning electron microscopy (SEM) and mechanical tests. It was found that the composite fibers had high compatibility and the postdrafting technique is beneficial for enhancing the mechanical robustness.
研究领域:
材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Jixin Liu,Dan Xu,Kena Yang,Jianhui Qiu,Longxiang Zhu
Poly(lactic acid) (PLA) is a biobased polymer with extensive potential for application in the fiber industry. However, its slow crystallization rate and low crystallinity limit its heat resistance, rendering it insufficient for many practical applications. In this study, heat-resistant tannic acid-epoxidized soybean oil (TA-ESO)/PLA composite fibers reinforced with TA-ESO microgel are successfully fabricated via melt spinning. The TA-ESO microgel functions as a physical cross-linker, establishing a cross-linked structure within the PLA matrix. The incorporation of TA-ESO microgel substantially influences the isothermal crystallinity of the TA-ESO/PLA composite and effectively reduces spherulite size. Moreover, the TA-ESO microgel enhances the mechanical properties of as-spun TA-ESO/PLA fibers, increasing tensile strength from 0.80 cN/dtex of pure PLA to approximately 1.00 cN/dtex. The hot-drawn process significantly improves both the mechanical properties and thermal stability of TA-ESO/PLA fibers. The tensile strength of TA-ESO0.5/PLA-DR-3.0 reaches 3.04 cN/dtex, nearly three times that of as-spun fibers. Following hot-drawn at various draw ratios, the Tg of TA-ESO0.5/PLA fibers increased from 62.9 to 86.9 °C. The TA-ESO0.5/PLA-DR-3.0 fiber exhibits excellent heat resistance, with its boiling water shrinkage rate dramatically reduced from 61.32% of as-spun TA-ESO0.5/PLA fiber to 8.90% (83.44% of PLA to 13.96% of PLA-3.0), while exhibiting minimal curling. This study provides a method to significantly increase the use temperature of PLA fiber, facilitating their further development and potential applications.
研究领域:
材料科学
·
高分子化学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
Jingwei Chen,Xinqiang Wang,Yongshuai Xie,Shuying Shi,Guanghui Zhang,Luyi Zhu
Gd 2 Zr 2 O 7 /ZrO 2 (GZC) composite fibers were prepared by electro-spinning method. The XRD , XPS and Raman results showed that there were three crystalline phases, tetragonal phase ZrO 2 , cubic phase ZrO 2 and defect fluorite phase Gd 2 Zr 2 O 7 in GZC composite fibers. GZC fibers remained an intact fiber texture up to 1400 °C according to SEM photographs. The thermal conductivity of GZC fibers was between 0.173 W/(m·K) at 400 °C and 0.309 W/(m·K) at 800 °C, which was lower than that of 7YSZ under the same experimental conditions. The fiber sheet with density about 3.5 g/cm 3 has thermal shrinkage less than 3% at 1400 °C. Hence, GZC fibers could be used as refractories for heat protection.
研究领域:
材料科学
·
热能工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2019
·Vol. 55
·期 6
·2471-2481
·
IF 3.442
Ji Lijun,Zhou Shu,Liu Xi,Gong Mindong,Xu Tong
PAN–COOH fibers were prepared with PAN fibers and used as templates, carbon source and nitrogen source for the first time to prepare carbon- and nitrogen-doped TiO 2 /carbon (C, N–TiO 2 ) composite fibers. The C, N–TiO 2 composite fibers were characterized by TEM, SEM, XPS, XRD, IR, Raman and UV–Vis spectrum. The composite fibers exhibited strong photocatalytic activity in photodegradation of Rh B solution under UV–Vis light. Doping C and N into TiO 2 materials could reduce the band gap width of TiO 2 and expand the light absorption range. The carbon fiber inside the composite fiber promoted the transfer of photoelectrons and inhibited the combination of photogenerated electrons and holes. The large specific surface area of C, N–TiO 2 composite fibers was also conducive to the photocatalytic activity. The macroscale C, N–TiO 2 composite fibers were easy for recycling. Therefore, the C, N–TiO 2 composite fibers had the potential for dealing with organic pollutants in water.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2022
·
IF 8.025
Bo Li,Yanli Sun,Jinbo Yao,Yanqin Shen,Hailiang Wu,Jiaying Li,Meihui Yang
The complex chemical structure of polypeptide and the imperfection of processing technology cause the mechanical properties of regenerated keratin to be hard and brittle. This defect seriously affects the application prospects of keratin materials. To solve the above problems, α-lipoic acid modified keratin (KER) was blended with Polyamide 6 (PA6) and prepared into composite fibers via the wet-spinning method in this work. The spinnability and spinning conditions of the KER/PA6 blend solution were analyzed by rheological theory. The results illustrated that keratin solution will easily form a gel state under certain temperatures and concentrations, which was not conducive to the preparation of regenerated fiber. When the temperature was 45 °C and the mass fraction was 10 %, the viscosity and rheology of the solution were appropriate. The rheological properties of the blend solution showed that too much keratin would make the solution easy to gel, which was not conducive to the preparation of regenerated fibers and may affect the fiber properties. On this basis, the prepared composite fibers were characterized to explore the macromolecular aggregation state of keratin and PA6 in fibers. FT-IR and XRD results proved that there was no chemical reaction between keratin and PA6 in the composite fibers, which belonged to physical blending. At the same time, the two polymers had good compatibility and can be blended at the molecular level. SEM, DSC , and tensile strength test results indicated that when the proportion of keratin was too high, the structure and properties of the composite fibers will have obvious defects, which was consistent with the rheological analysis. Therefore, the blend ratio of keratin/PA6 was determined to be 3:7. Under this condition, the fibers exhibited a homogeneous structure and good thermal properties, especially its mechanical properties were close to wool fibers. The KER/PA6 composite fibers show important research value and can also provide technical reference for the development of regenerated biomass materials.
研究领域:
材料科学
·
生物工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Wei Liu,Weilong Liao,Yang Ning,Xianming Zheng,Yu Ji,Zhao Dai,Zhaohui Meng,Jingwen Zhang,Junfu Wei,Huan Zhang
In this study, a novel and well-constructed composite fiber membrane (Au/mPVB) is provided for removing the low-concentration formaldehyde gas continuously released in indoor environments at room temperature. The Au/mPVB provides a microreactor-like structure for catalytic reaction , in which the fiber has a homogeneous macroporous structure, and Au NPs are uniformly loaded onto the inner wall of the macropores in the amino-modified fiber (mPVB) by template sacrifice. Formaldehyde can be enriched in the mPVB fiber under the adsorption to the amino groups, and the catalytic performance can be improved effectively under the synergistic effect of adsorption and catalysis. In the experimental results of performance tests, 1 wt% Au/mPVB exhibited a high removal efficiency of 97.5% for 0.8 ppm formaldehyde in the indoor environment, which improved the performance by 25% compared to mPVB, and no obvious decrease of catalytic activation occurred after the continuous formaldehyde-releasing experiment without catalyst regeneration.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POLYMER ENGINEERING
·
2016
·Vol. 37
·期 2
·107-112
·
IF 0.631
Xinjian Cheng,Yiru Jia,Jin Qiang,Lei Wen,Chenlong Zhang,Xiao Yang,Liefeng Liang
Nanosized CdS/polymer composite fiber mats were fabricated via a facile electrospinning processing, and the as-prepared composite fiber mats showed excellent photodegradation ability to methylene blue (MB). Polymers bearing N and S atoms with affinity to Cd 2+ ions were first synthesized and then used to prepare CdS/polymer composite fibers. In this work, coaxial electrospinning was employed to achieve the preparation of the desired composite fibers using special polymers as core and cadmium acetate [Cd(CH 3 COO) 2 ] as shell. Then, fiber mats were immersed in thioacetamide (TAA) solution for several minutes, and CdS/polymer composite mats were obtained eventually. The photodegradation catalytic ability was tested using MB as a model dye under sunlight. The photocatalytic efficiency of the CdS/polymer composite fiber mat was recorded and studied by UV-visible spectra, and it showed high efficiency. Nanofiber mats will find real applications in the treatment of wastewater.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Yang Hui,Ye Shewen,Wang Yunfeng,Zhou Jiaming,Jia Jingwen,Chen Jiahao,Zeng Qinqin,Liang Tongxiang
Because of high specific surface area, rich active sites and superior electron conductivity, element-doping porous carbon@metal nanoparticles composite is identified as a promising electrode material for supercapacitor . Herein, guar gum (GG) and melamine are used as carbon and N sources, respectively. Because of the high affinity between Cu(OH) 2 and GG, gel fibers with high yield and good size distribution can be obtained; after carbonization and pickling, the N-doping porous carbon@Cu composite fiber (NPCF@Cu), with high specific surface area, rich porous structure, and uniform distributed Cu nanoparticles, has been successfully prepared. Results show that the NPCF@Cu-10 exhibits high specific capacitance (334.6 F g −1 at 2 A g −1 ) and excellent rate capability (62.7% capacity retention at 50 A g −1 versus that of 2 A g −1 ). Furthermore, its superior electrochemical performance in two-electrode configuration demonstrates that the NPCF@Cu can be utilized as a promising electrode material for supercapacitor.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）