Nanomaterials
·
2023
·Vol. 14
·期 1
·64
·
IF 5.3
Dongshuang Wu,Yidan Chen,Yuelei Bai,Chuncheng Zhu,Mingyi Zhang
Producing oxygen and hydrogen via the electrolysis of water has the advantages of a simple operation, high efficiency, and environmental friendliness, making it the most promising hydrogen production method. In this study, La0.2Sr0.8Cu0.4Co0.6O3−δ(LSCC) nanofibers were prepared by electrospinning to utilize non-noble perovskite oxides instead of noble metal catalysts for the oxygen evolution reaction, and the performance and electrochemical properties of LSCC nanofibers synthesized at different firing temperatures were evaluated. In an alkaline environment (pH = 14, 6 M KOH), the nanofibers calcined at 650 °C showed an overpotential of 209 mV at a current density of 10 mA cm−2as well as good long-term stability. Therefore, the prepared LSCC-650 NF catalyst shows excellent potential for electrocatalytic oxygen evolution.Keywords:perovskite;OER;nanofiber;electrospinning
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2023
·Vol. 58
·期 34
·13762-13773
·
IF 4.5
Yu Xinrong,Ma Yihang,Ma Zekun,Lian He,Meng Zhaoxu
Cuttlebone as a hemostatic traditional Chinese medicine is usually applied in powder directly to the wound for hemostasis. In order to improve the hemostatic utility of cuttlebone, gelatin/cuttlebone (Gel/Cb) membranes with different Gel/Cb ratios were fabricated through electrospinning and characterized by scanning electron microscopy, Fourier transform infrared spectroscopy, and X-ray diffraction. The hemostatic effect and coagulation process of Gel/Cb electrospun membranes were evaluated in vitro by dynamic whole-blood coagulation test, in vitro hemolysis test, determination of clotting time, and platelet adhesion test and in vivo by liver and tail vein hemostasis models. It was noted that the addition of cuttlebone could significantly decrease the hemolysis rates of Gel/Cb electrospun membranes, which was only about one-sixth of the Gel electrospun membrane. The animal experiments demonstrated effective reduction in bleeding time and volume in Gel/Cb-treated mice. Specially, compared with the commercially available gauze group. Gel/Cb (7:3) electrospun membrane reduced the clotting time by 80.92% and the average bleeding volume by 50.83%. The results further indicated that Gel/Cb electrospun membranes could accelerate coagulation, possibly via the coagulation pathway activation to stimulate platelet contraction and rapid aggregation at the wound surface, providing a new method for rapid hemostasis of acute trauma. Graphical Abstract
研究领域:
生物医学工程
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材料科学
·
血液学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2018
·Vol. 5
·期 5
·1126-1132
·
IF 5.106
Congjie Lv,Yi Peng,Jing Yang,Xiaochuan Duan,Jianmin Ma,Taihong Wang
Nb-Doped LiNi0.4Co0.2Mn0.4O2 (Nb-NCM) nanobelts have been successfully fabricated for the first time through a facile electrospinning method by the delicate control of PAN pyrolysis and Nb-NCM formation (including nucleation and subsequent growth processes). According to the experimental evidence from temperature-dependent characterization and isolation of the intermediates, the formation of nanobelts undergoes a morphology evolution from nanofibres to nanotubes, and finally to the nanobelts composed of subunit nanoparticles. When used as a cathode for lithium-ion batteries, the as-electrospun Nb-NCM nanobelts exhibit superior electrochemical performances, which could be attributed to their unique features, such as their 1D nanostructure, well-crystallized nature and Nb-doping. These features can improve the ionic conductivity of Nb-NCM nanobelts and stabilize the electrode/electrolyte interface. Therefore, the 1D Nb-NCM nanobelts developed in this study not only provide an excellent model to investigate the fabrication of multi-element oxides using the electrospinning method, but also open up a facile route for designing 1D layered cathodes with a complex component for high performance lithium-ion batteries.
研究领域:
材料科学
·
纳米技术
·
电化学
·
能源存储
·
无机合成
✓ 已验证
DOI
高影响因子
Materials Science and Engineering B-Advanced Functional Solid-State Materials
·
2024
·
IF 3.9
Hongli Liu,Weiqiang Xie,Qi Zhao,Ying Sui,Zhongxian Liu,Tiangang Zhang,Zhiqiang Zhang,Shuang Sun,Jianwei Jia
SiC fibers have excellent properties such as high-temperature resistance, oxidation resistance, and high strength, and it is an ideal material for high-temperature structures. However, with the continuous development of technology, the application conditions of the material are becoming more and more stringent. Therefore, the properties of SiC fibers need to be further improved to adapt to the ultra-high temperature environment. In this work, yttrium was introduced into the precursor solution using the precursor transformation method, and yttrium-containing SiC fibers were prepared by electrospinning. The microstructure, chemical composition, oxidation resistance, and mechanical properties of the specimens were tested. The results showed that the samples have good thermal stability after ceramization at 1400 °C, and the Y 2 SiO 5 produced in the fiber matrix further improves the antioxidant properties of the fibers. Additionally, the yttrium-containing SiC fibers maintained excellent flexibility, and the high-temperature resistance of SiC fibers was significantly enhanced.
研究领域:
材料科学
·
高温结构材料
✓ 已验证
DOI
高影响因子
Environmental Science-Nano
·
2025
·
IF 5.1
Yinyin Peng,Yang Luo,Shuyuan Liu,Yin Cong,Derong Liu,Bowen Hu,Xiaoqin Pu,Guoyuan Yuan,Wei Xiong
This study addresses the challenge of cobalt ion separation by developing novel MOF nanofibers, Co(II)-PIIMs. Co(II)-SIM-IIP was synthesized using zinc-based MOFs (SIM-1) as a matrix and tetraethylpentadiamine (TEPA) as a functional monomer through the ion-imprinting technique (IIT). These Co(II)-SIM-IIP particles were then incorporated as fillers into a polyacrylonitrile (PAN) substrate to fabricate Co(II)-PIIMs-x nanofibers via electrospinning, aimed at selective cobalt ion separation. The optimal performance was achieved at a 10% doping level of Co(II)-SIM-IIP, resulting in a maximum adsorptive capacity of 112.74 mg g−1, a membrane flux of 1095 L m−2 h−1, and a retention rate of 43.49%. The material demonstrated excellent selectivity, exhibiting high selectivity factors for various ions, such as Ca2+ (7.42), K+ (55.98), Mg2+ (72.30), and Ni2+ (1.28). The adsorption mechanism revealed that cobalt adsorption onto Co(II)-PIIMs is primarily governed by chemisorption, facilitated by the uniform distribution of cobalt on the surface of the nanofibers. Importantly, after five cycles, Co(II)-PIIMs exhibited outstanding regeneration capability, retaining over 95% of their initial adsorption capacity. These remarkable selectivity factors underscore the material's potential for efficient cobalt ion separation and purification in environmental remediation applications.
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
Journal of Energy Chemistry
·
2024
·
IF 14
Jiyuan Yu,Jian Zheng,Wei Wang,Zhijia Zhu,Chunyan Hu,Baojiang Liu
Nowadays, the global climate is constantly being destroyed and the fluctuations in ambient temperature are becoming more frequent. However, conventional single-mode thermal management strategies (heating or cooling) failed to resolve such dynamic temperature changes. Moreover, developing thermal management devices capable of accommodating these temperature variations while remaining simple to fabricate and durable has remained a formidable obstacle. To address these bottlenecks, we design and successfully fabricate a novel dual-mode hierarchical (DMH) composite film featuring a micro-nanofiber network structure, achieved through a straightforward two-step continuous electrospinning process. In cooling mode, it presents a high solar reflectivity of up to 97.7% and an excellent atmospheric transparent window (ATW) infrared emissivity of up to 98.9%. Noted that this DMH film could realize a cooling of 8.1 °C compared to the ambient temperature outdoors. In heating mode, it also exhibits a high solar absorptivity of 94.7% and heats up to 11.9 °C higher than black cotton fabric when utilized by individuals. In practical application scenarios, a seamless transition between efficient cooling and heating is achieved by simply flipping the film. More importantly, the DMH film combining the benefits of composites demonstrates portability, durability, and easy-cleaning, promising to achieve large-scale production and use of thermally managed textiles in the future. The energy savings offered by film applications provide a viable solution for the early realization of carbon neutrality.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
ACS Omega
·
2025
·
IF 4.3
Xue Gao,Chaosheng Li,Chengbin Shen
To address water scarcity in arid regions, this study proposes a high-efficiency fog harvesting material development strategy based on wettability gradient regulation. Controllable assembly of polyvinyl chloride nanofibers with bead-on-string structures on hydrophilic substrate surfaces is achieved through a 5 min electrospinning process. The fabricated Janus membrane achieves a contact angle differential of 141°, establishing an asymmetric wetting structure that enables directional droplet transport. Experimental data show that its fog water collection flux is 2.1 times higher than those of traditional hydrophilic materials. Surface water droplets were absorbed by the Janus membrane in only 2 ms, while they were absorbed by the hydrophilic membrane in at least 5 ms. Moreover, after the water droplets were absorbed, the Janus membrane surface can remain in a fresh, dry state, which is conducive to further water absorption. The underlying mechanisms for the enhanced fog harvesting performance were detailed, with numerical simulations used to study the impact of the hydrophilic layer’s wettability on liquid penetration. Such a Janus membrane can be a promising candidate for fog harvesting against the water crisis.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Yubo Ren,Shuaijie Li,Jingjun Dong,Zhihui Zhao,Zunyuan Wang,Guoxin Wang,Xiaoming Li,Weichao Chen
The urgent need for efficient wound dressing requires comfortability, reasonable humidity, and anti-inflammatory and pathogen anti-infectivity properties. Herein, the PET micronanofiber pads loaded with forsythin (FT) are successfully designed and prepared by electrospinning. The asymmetric wettability double-layer micronanofiber pad (PET@FT10%/PET) has been developed by utilizing the hydrophobic properties of PET. The addition of FT endows super hydrophobic PET with excellent hydrophilic properties and absorbent properties to ensure the dryness of the wound environment. Meanwhile, the hydrophobic PET layer avoids the adhesion of dust and bacteria, providing a barrier to prevent pollution of the complex external environment for the drug-carrying layer. Furthermore, the PET@FT10%/PET double-layer micronanofiber pad provides favorable conditions for wound healing with the validation by inhibition of representative pathogens Escherichia coli and Staphylococcus aureus, and the expression of pro-inflammatory factors (IL-6 and TNF-α), and the cell survival rate also achieved excellent results. Therefore, the PET@FT10%/PET double-layer micronanofiber pad designed in this paper provides a neoteric strategy with an asymmetric structure design to avoid contamination and accelerate drug delivery for wound healing.
研究领域:
生物医学工程
·
材料科学
·
药理学
✓ 已验证
产品关联
DOI
高影响因子
Membranes
·
2021
·Vol. 11
·期 4
·267
·
IF 4.106
Danxia Chen,Xiang Wang,Jianyu Liang,Ze Zhang,Weiping Chen
Commercial separators (polyolefin separators) for lithium-ion batteries still have defects such as low thermostability and inferior interface compatibility, which result in serious potential safety distress and poor electrochemical performance. Zeolite/Polyacrylonitrile (Z/PAN) composite separators have been fabricated by electrospinning a polyacrylonitrile (PAN) membrane and then dip-coating it with zeolite (ZSM-5). Different from commercial separators, the Z/PAN composite separators exhibit high electrolyte uptake, excellent ionic conductivity, and prominent thermal stability. Specifically, the Z/PAN-1.5 separator exhibits the best performance, with a high electrolyte uptake of 308.1% and an excellent ionic conductivity of 2.158 mS·cm−1. The Z/PAN-1.5 separator may mechanically shrink less than 10% when held at 180 °C for 30 min, proving good thermal stability. Compared with the pristine PAN separator, the Li/separator/LiFePO4cells with the Z/PAN-1.5 composite separator have excellent high-rate discharge capacity (102.2 mAh·g−1at 7 C) and favorable cycling performance (144.9 mAh·g−1at 0.5 C after 100 cycles). Obviously, the Z/PAN-1.5 separator holds great promise in furthering the safety and performance of lithium-ion batteries.Keywords:separator;electrospinning;polyacrylonitrile;zeolite;lithium-ion batteries
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2020
·Vol. 305
·期 12
·2000457
·
IF 3.853
Chenkai Sun,Liming Zou,Yongjing Xu,Yanli Wang
To solve the problems of limited drug solubility and poor biodistribution with polymers in drug delivery system, ibuprofen (IBU) is chosen to prepare IBU-loaded poly(lactic acid) (PLA) micro-fibrous mats via electrospinning. Distinguished from the previous studies, a lower toxic binary solvent dichloromethane/ethanol (DCM/EtOH, v / v = 8/2) is used to successfully fabricate PLA/IBU electrospun mats with outstanding properties. In order to further evaluate the effects of IBU content on PLA, there are characterization methods employed as follows: scanning electron microscopy (SEM), Fourier-transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), differential scanning calorimetry (DSC), and UV–vis spectrophotometer. The results show that IBU can be physically and uniformly distributed both on the surface and inside of PLA fibers. Compared with pure PLA mats, the crystallinity and mechanical properties of PLA/IBU electrospun mats has significantly improved. Meanwhile, in vitro drug release behavior demonstrates that with the increasing content of IBU, the rate of IBU release has increasingly improved. Particularly, the release behavior of PLA/IBU mats exhibited best with 20% IBU content, and the release amount reached 74.3% at the end of 240 h. Considering all these features, PLA/IBU electrospun mats have the potential to be used in the fields of wound dressing and drug delivery.
研究领域:
材料科学
·
药学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2019
·Vol. 136
·期 24
·47662
·
IF 2.188
Yulong Xu,Kaili Li,Yong Liu,Yan An,Changmin Xing
Black plaster is a traditional Herbal medicine with a long history; it is usually used in paste form. In this study, a black plaster/poly(ethylene glycol) (PEG) composite fiber was prepared by a novel upward melt electrospinning method. Scanning electron microscopy results show that the black plaster composite fiber has good morphology and uniform diameter. Thermogravimetric analysis results indicate that the heating temperature in the electrospinning process does not damage the composition of the black plaster, and drug components are effectively retained in the black plaster. Drug dissolution results show that the dissolution of poorly water-soluble Draconis Sanguis in both pure black plaster fibers and composite fibers are significantly higher than that in traditional bulk black plasters. When the PEG content in the composite fiber is 85 wt %, the drug dissolution amount of Draconis Sanguis in the black plaster composite fiber is the highest. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019 , 136 , 47662.
研究领域:
材料科学
·
中药学
·
制药工程
✓ 已验证
产品关联
DOI
高影响因子
Materials Research Express
·
2018
·Vol. 5
·期 4
·045019
·
IF 1.151
Shu-Xin Yu,Jie Zheng,Xu Yan,Xiao-Xiong Wang,Guang-Di Nie,Ye-Qiang Tan,Jun Zhang,Kun-Yan Sui,Yun-Ze Long
In conventional solution electrospinning, the morphologies (e.g., spheres, beaded fibers, and fibers) of electrospun products can be controlled by solution concentration. Here, we report that the morphologies and structures of polylactic acid (PLA) via melt electrospinning also can be adjusted from microfibers to microspheres by simply increasing the spinning temperature. It was found that with temperature increasing from 200 °C to 240 °C, the average diameter of melt-electrospun PLA fibers decreased from 58.46 to 2.96 μm. Then, beaded fibers and microspheres about 14.5 μm in diameter were collected when the spinning temperature was increased to 250 °C and 260 °C. In addition, we also found that the average PLA fiber diameter decreased with increasing the applied spinning voltage, and increased with the increase of spinning distance. To explain the formation mechanism of different PLA microstructures, rheological property and infrared spectra of PLA under different spinning temperatures were also tested.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）