ELECTROCHIMICA ACTA
·
2021
·
IF 6.901
Yang Chen,Ning Wang,Shan Han,Martin Jensen,Xianfeng Li,Xingxiang Zhang
Tin oxide (SnO X ) nanomaterials have received attention as electrode materials due to their large theoretical capacitance, but their use remains limited due to cumbersome processing and limited electrical conductivity. In this work, SnO X nanoparticles, nanowires and nanorods embedded in a layered composite carbon hybrid nanofiber mat are prepared via blow-spinning followed by pre-oxidation and a high-temperature calcination self-assembly process in argon using stannous chloride and polyacrylonitrile as raw materials. As a result, a dual network conductive structure consisting of an upper SnOx nanostructure and underlying hybrid carbon nanofibers is created. The nanostructure morphology is controlled by reaction time through a transformation from nanoparticle to nanowire and lastly to nanorod and the potential formation and growth mechanism is discussed in detail. It is found that pre-oxidation introduces oxygen in the polyacrylonitrile that upon calcination into carbon nanofibers is released as oxygen containing gaseous substances that fuel transformation and oxidation of stannous chlorides and oxides into the self-assembled stannic oxide nanostructures in an approach applicable to other metal oxide structures. The SnO 2 nanowire carbon hybrid nanofibers mat (SnO 2 NW@CNFMs) exhibits the highest specific capacitance of 420.1 F g − 1 at a scan rate of 5 mV s − 1 and good cyclic stability of 92.5% capacitance retention after 3000 cycles at 1 A g − 1 which exceeds the performance in earlier reported studies of tin oxide nanomaterials. The high electrochemical properties combined with the novel preparation procedure presented in this study promote SnO 2 NW@CNFMs as a good choice for electrodes in electronic appliances and electric vehicles.
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
高影响因子
Inorganic Chemistry Frontiers
·
2024
·
IF 6.1
Wenlu Zhang,Mengzhe Bao,Mengyao Chen,Wenbin Li,Weilin Xu,Chong He
High-performance aerogel materials hold significant potential for thermal management applications. However, the widespread utilization of conventional ceramic granular aerogels is constrained by their inherent brittleness and rigidity. Herein, an additive blow spinning strategy is introduced for fabricating 3D ZrO2@mullite nanofibrous aerogels with complex morphologies and lamellar structures. A spinnable solution comprising polysiloxane and polyaluminum was synthesized and blow spinning was carried out at a high flow rate, typically ranging from 10 to 30 mL h−1. By incorporating ZrO2 nanocrystals as a reinforcing phase, ZrO2@mullite nanofibers with enhanced mechanical properties are produced through pyrolysis. Utilizing a customized additive spinning strategy, 3D ZrO2@mullite fibrous aerogels with various complex morphologies (such as conical and cubic) and lamellar structures are achieved. Inter-layer spaces of fibrous aerogels can be controlled within 20–100 μm, while the fiber diameter varies in the 0.5–1.5 μm range. These 3D ZrO2@mullite fibrous aerogels showcase remarkable attributes including high compressibility over 60%, high-temperature resistance up to 1300 °C and remarkable bendability of around 360°, and their thermal conductivity remains between 0.01 and 0.026 W m−1 K−1, which paves the way for further advancements in tailored fibrous aerogels.
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
NANO LETTERS
·
2017
·
IF 12.712
Bilal Khalid,Xiaopeng Bai,Hehe Wei,Ya Huang,Hui Wu,Yi Cui
Particulate matter (PM) pollution has caused many serious public health issues. Whereas indoor air protection usually relies on expensive and energy-consuming filtering devices, direct PM filtration by window screens has attracted increasing attention. Recently, electrospun polymer nanofiber networks have been developed as transparent filters for highly efficient PM2.5 removal; however, it remains challenging to uniformly coat the nanofibers on window screens on a large scale and with low cost. Here, we report a blow-spinning technique that is fast, efficient, and free of high voltages for the large-scale direct coating of nanofibers onto window screens for indoor PM pollution protection. We have achieved a transparent air filter of 80% optical transparency with >99% standard removal efficiency level for PM2.5. A test on a real window (1 m × 2 m) in Beijing has proven that the nanofiber transparent air filter acquires excellent PM2.5 removal efficiency of 90.6% over 12 h under extremely hazy air conditions (PM2.5 mass concentration > 708 μg/m3). Moreover, we show that the nanofibers can be readily coated on the window screen for pollution protection and can be easily removed by wiping the screen after hazardous days.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
PubMed
高影响因子
Nano Research
·
2020
·Vol. 13
·期 3
·861-867
·
IF 8.183
Li Ziwei,Song Jianan,Long Yuanzheng,Jia Chao,Liu Zhenglian,Li Lei,Yang Cheng,Liu Junchen,Lin Sen,Wang Haiyang,Liu Yibo,Fang Minghao,Wu Hui
Particulate matter (PM) pollution has become a serious problem worldwide and various kinds of nanofibrous filters aiming to solve the problem have been developed. It is urgent to remove PM from high-temperature pollution sources, such as industrial emissions, coal furnaces, and automobile exhaust gases. However, filtration at pollution sources remains challenging because most existing air filters are not resistant to high temperature. Herein, heat-resistant polyimide (PI) nanofibrous air filters are fabricated via a simple and scalable solution blow-spinning method. These air filters show excellent thermal stability at high temperature up to 420 °C. They exhibit a filtration efficiency as high as 99.73% at ambient temperature and over 97% at 300 °C. In addition, a field test shows that the filters remove > 97% of PM from the car exhaust fumes. Hence, the blow-spun PI nanofibrous membranes combined with the facile preparation strategy have great potential in high temperature air filtration fields and other similar applications such as water purification and protein separation.
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
TEXTILE RESEARCH JOURNAL
·
2024
·
IF 1.6
Xianhua Zhang,Hewei Xiang,Mengyu Yuan,Jie Liu,Yingxue Pei,Yanchao Zhao,Haozhe Tang,Fan Liu
We report a facile strategy for preparing ultralight, mechanically robust, and washable heat-retaining materials via solution blow spinning technology and thermal crosslinking. Fluffy microfibrous assemblies with nonwoven structure were fabricated by blending fibers of stiff and soft polymers and creating a bonding architecture among them. The premise of this design is that polystyrene, which is stiff, can endow materials with rigidity, while thermoplastic polyurethane, which is soft, can absorb energy during mechanical deformation. Moreover, the stability of the sponge was improved by using tris (2-methyl-1-aziridine propionate; TTMA) as a crosslinking agent. The optimized microfibrous sponges present excellent mechanical properties with a large breaking elongation of 42.1% and outstanding resilience in resisting 100 cyclic compressions at 40% strain. Furthermore, the microfibrous sponges exhibit a low volume density of 33.32 mg/cm3, effective heat-preservation ability (low thermal conductivity: 23.1 mW/m·K) and excellent washability. The preparation of microfibrous sponges via solution blow spinning can be a novel route for developing ultralight and superelastic heat retention materials.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2025
·
IF 7.4
Shun Chen,Shuhan Ye,Wei Wang,Lingxin He,Wenwen Guo
Bio-based flame retardants are of great significance for ecological environments, sustainable development and human health. Herein, a novel DOPO-based furan-containing flame retardant (FAD) was successfully prepared by DOPO and bio-based compounds (furfural and furfurylamine) via the Schiff base-addition reaction. Subsequently, flame-retardant nonwoven materials with excellent thermal stability, flame retardancy, and carbonization performance were obtained by solution blow spinning technology. The thermal stability and flame-retardant property of the original PLA nonwoven material and the flame-retardant PLA nonwoven materials were analyzed by TGA, LOI, UL-94 flammability tests, and cone calorimetry. Compared to the original PLA nonwoven material, the flame-retardant nonwoven materials showed significantly improved flame-retardant properties. When the addition amount of the flame retardant FAD was 10% (P-FAD-10), the LOI of P-FAD-10 significantly reached 31%, and the peak heat release rate (PHRR) and total heat release (THR) decreased by 14.9% and 21.4%, respectively, compared to the original PLA nonwoven material. Additionally, P-FAD-10 passed the UL-94 V-0 rating with better anti-dripping. This novel P and N-containing bio-based flame retardant FAD and its flame-retardant PLA nonwoven material provide a green and efficient solution for developing high-performance, bio-based flame-retardant nonwoven materials.
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
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Han Zhang,Rong Wang,Pan Li,Luna Jia,Feng Wang,Yibo Liu,Hao Wang,Lu Yu,Bo Li
The cleanup of spilled oil from water has always been a severe and urgent issue, which attracted great attention and interest. In this study, we reported a highly efficient large-scale blow spinning technique to fabricate fibrous oil sorbents including the polystyrene (PS) fibrous sponge and polyvinylidene fluoride (PVDF)/polystyrene (PS) composite package with ultrahigh oil adsorption capacity. The wide diameter distributions and multilevel pore structure of PS fibers were obtained by controlling the precursor solution compositions used in blow spinning. The PS fibrous sponge formed by accumulating naturally exhibited an ultralow density, whose oil adsorption capacity ranged from 74 to 440 g/g for various oils and organic solvents. To enhance the mechanical strength of the PS fibrous sponge, the PVDF/PS composite package with the sandwich structure was fabricated by alternately blow spinning. The PVDF/PS composite package possessed 2.7 times the tensile strength of the PS fibrous sponge while the oil adsorption capacity had merely a slight decrease. Moreover, the fabrication strategy of blow spinning used to produce the fibrous sponge and composite package is highly efficient, cost-effective, and environment-friendly, which is suitable for large-scale industrial production of oil sorbents and oil spill cleanup in environment protection.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
·
2024
·Vol. 107
·期 10
·6764-6773
·
IF 3.5
Huihui Yan,Kun Wang,Liping Zhao,Peng Zhang,Han Chen,Jing Liu,Lian Gao
A new type of Ni/Al 2 O 3 self-supporting catalysts, with high specific surface area, was fabricated by blow-spinning technology. These Ni/Al 2 O 3 self-supporting catalysts are hollow flexible fibers and were utilized for the dry reforming of methane. The Ni/Al 2 O 3 catalysts exhibited exceptional catalytic performance, maintaining their activity for over 150-h at a high temperature of 800°C. The Ni nanoparticles disputed on the hollow fibers demonstrated remarkable resistance to sintering and coking during high-temperature catalysis. This was a noteworthy feature, as sintering and coking are common challenges faced by catalysts during high-temperature reactions. Furthermore, the catalysts retained its activity even after a rigorous 150-h test at 800°C, indicating its durability and stability. Importantly, the Ni/Al 2 O 3 self-supporting could be successfully reactivated after the test, further highlighting its reusable nature. This study offers promising new avenues for the development of high-temperature, self-supporting, and reactivatable catalysts.
研究领域:
材料科学
·
催化化学
·
能源转化
✓ 已验证
产品关联
DOI
高影响因子
Advanced Materials Technologies
·
2019
·Vol. 4
·期 7
·1900045
·
IF 5.395
Haiyang Wang,Sen Lin,Di Zu,Jianan Song,Zhenglian Liu,Lei Li,Chao Jia,Xiaopeng Bai,Junchen Liu,Ziwei Li,Dong Wang,Ya Huang,Minghao Fang,Ming Lei,Bo Li,Hui Wu
Fog and frost formation cause many issues such as influencing building interior daylighting of architectural aesthetics or causing traffic accidents in cold weather. Transparent flexible heaters (TFHs) play a vital role in defogging smart windows. Herein, the rapid and facile fabrication of uniform, flexible, and large-scale TFHs based on percolation networks of Ag nanofiber (AgNF) is reported using blow-spinning method followed with room-temperature UV reduction. The TFHs exhibit excellent optical and electrical properties with a high transmittance of ≈95% and low sheet resistance of ≈16 Ω sq −1 . The TFHs based on AgNFs also present excellent mechanical flexibility and remain steady after 1000 cycles of bending. Furthermore, the saturation temperature of AgNF/cPI (colorless polyimide) electrode-based TFHs (9.5 Ω sq −1 ) reaches more than 285 °C at a DC voltage of 10 V, more effective than those of tin-doped indium oxide (ITO)-based TFHs (55 Ω sq −1 ) about 150 °C at the same transmittance of visible light (88%). The flexible AgNFs-based heater demonstrates excellent heating performance, as well as reliable chemical and mechanical durability in defogging smart windows of vehicles or buildings.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Progress in Natural Science-Materials International
·
2024
·
IF 4.8
Jiahao He,Chao Song,Longze Chen,Sicheng Xin,Pengfei Xiang,Wenbin Li,Chong He
Elastic zirconium-based ceramic fiber products have gain particular interest due to their exceptional high-temperature resistant performance. Nonetheless, commercial high-performance Zr-based fibers are still difficult to acquire which hinders its widely application in thermal insulation scenes. Herein, large-scale fabrication of various Zr-based (ZrO 2 , ZrSiO 4 ) ceramic fibers were achieved through solution blow spinning technology, which was endowed with merits such as cost-effectiveness, high production efficiency, reduced energy consumption, and exceptional product quality. Through high-temperature sintering to 1000 °C, blow spun organic fibers can be converted into Zr-based ceramic fibers with diameters ranging from 0.5 to 2 μm. Optimizing the crystalline structure of these fibers through high-temperature pyrolysis process enhanced their thermal resistance. Additionally, through introducing polysiloxane as the Si source, ZrSiO 4 fibers can be synthesized with markedly improved mechanical properties and high-temperature resistance. These blow-spun Zr-based fiber sponges exhibit advantageous internal pore structures, high-temperature elasticity and thermal insulation performance.
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 APPLIED POLYMER SCIENCE
·
2020
·Vol. 137
·期 37
·49103
·
IF 2.52
Beirong Ye,Chao Jia,Ziwei Li,Lei Li,Qiang Zhao,Jinshu Wang,Hui Wu
With the ever frequent of industrial organic solvent emissions and oil spillages, the development of high efficiency oil/water separation materials has attracted extensive attention. Here, PLA-based nanofiber membranes modified with metal oxides (SiO 2 , TiO 2 , Al 2 O 3 , and CeO 2 ) are fabricated through blow spinning the mixed solution of polylactic acid (PLA) and metal oxide nanoparticles (NPs). Results shows that the addition of SiO 2 NPs significantly increases the hydrophobicity of the membranes, while maintaining the excellent superoleophilicity. The PLA/SiO 2 nanofiber membranes demonstrate a higher separation performance than pure PLA, PLA/TiO 2 , PLA/Al 2 O 3 , and PLA/CeO 2 nanofiber membranes with high separation efficiency (~100%) and permeation flux (17,800 L m −2 h −1 for n-heptane), as well as prominent oil adsorption capacity (19.9 g/g for n-hexane). The successful fabrication of metal oxides modified PLA nanofiber membranes with high separation and adsorption ability, and excellent durability hold great application potential in the field of oily wastewater treatment.
研究领域:
材料科学
·
环境科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2021
·Vol. 26
·期 11
·3258
·
IF 4.412
Zhenglian Liu,Ziling Xu,Chaoqi Liu,Yajing Zhao,Qingyin Xia,Minghao Fang,Xin Min,Zhaohui Huang,Yan’gai Liu,Xiaowen Wu
Developing a porous separation membrane that can efficiently separate oil–water emulsions still represents a challenge. In this study, nanofiber membranes with polydopamine clusters polymerized and embedded on the surface were successfully constructed using a solution blow-spinning process. The hierarchical surface structure enhanced the selective wettability, superhydrophilicity in air (≈0°), and underwater oleophobicity (≈160.2°) of the membrane. This membrane can effectively separate oil–water emulsions, achieving an excellent permeation flux (1552 Lm−2h−1) and high separation efficiency (~99.86%) while operating only under the force of gravity. When the external driving pressure was increased to 20 kPa, the separation efficiency hardly changed (99.81%). However, the permeation flux significantly increased to 5894 Lm−2h−1. These results show that the as-prepared polydopamine nanocluster-embedded nanofiber membrane has an excellent potential for oily wastewater treatment applications.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）