Nanomaterials
·
2019
·Vol. 9
·期 8
·1090
·
IF 4.034
Rui-Qiang Liu,Xiao-Xiong Wang,Jie Fu,Qian-Qian Zhang,Wei-Zhi Song,Yuan Xu,You-Qiang Chen,Seeram Ramakrishna,Yun-Ze Long
Self-powered nanogenerators composed of poly(vinylidene fluoride) (PVDF) have received much attention. Solution blow spinning (SBS) is a neoteric process for preparing nanofiber mats with high efficiency and safely, and SBS is a mature fiber-forming technology that offers many advantages over conventional electrospinning methods. Herein, we adopted the SBS method to prepare independent PVDF nanofiber membranes (NFMs), and successfully employed them as nanogenerators. Finally, we tested the change in the output current caused by mechanical compression and stretching, and studied its durability and robustness by charging the capacitor, which can drive tiny electronic devices. The results show that the PVDF nanogenerators by using this SBS equipment can not only be used in wearable electronic textiles, but are also suitable for potential applications in micro-energy harvesting equipment.Keywords:solution blow spinning;micro-energy harvesting;nanogenerators
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
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Fan Liu,Wenbo Li,Yuan Liang,Xianhua Zhang,Dongxiao Ji,Hengtao Liang,Mengyu Yuan,Yanchao Zhao,Haozhe Tang,Xiang Li,Jianxin He,Weili Shao
Functional materials that can quickly absorb and degrade mustard gas are essential for chemical warfare emergency response kits. In this study, a fiber membrane with excellent adsorption and catalytic degradation activity was developed by solution blow spinning polystyrene (PS)/polyurethane (PU) and hydrothermal in situ growth of a zirconium-based MOF (MOF-808). The mechanical properties of the PS/PU fibers were improved by adding a trimethylolpropane tris (2-methyl-1-aziridine propionate) (TTMA) cross-linking agent. Moreover, the C═O bonds in TTMA provided abundant growth sites for MOF-808 in the hydrothermal process, thereby greatly increasing the loading capacity. The fiber surface was completely covered with the MOF-808 particles within 24 h. The PS/PU/TTMA/MOF-808 fiber membrane was used for the catalytic degradation of 2-chloroethyl ethyl sulfide (CEES). The degradation efficiency reached 97.7% after 72 h, indicating its great application potential in emergency wiping cloths for mustard gas adsorption and degradation.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Foods
·
2021
·Vol. 10
·期 10
·2339
·
IF 4.35
Zhichao Yang,Chaoyi Shen,Yucheng Zou,Di Wu,Hui Zhang,Kunsong Chen
Gelatin (GA) is a natural protein widely used in food packaging, but its fabricated fibrous film has the defects of a high tendency to swell and inferior mechanical properties. In this work, a novel spinning technique, solution blow spinning (SBS), was used for the rapid fabrication of nanofiber materials; meanwhile, nylon 66 (PA66) was used to improve the mechanical properties and the ability to resist dissolution of gelatin films. Morphology observations show that GA/PA66 composite films had nano-diameter from 172.3 to 322.1 nm. Fourier transform infrared spectroscopy and X-ray indicate that GA and PA66 had strong interaction by hydrogen bonding. Mechanical tests show the elongation at break of the composite film increased substantially from 7.98% to 30.36%, and the tensile strength of the composite film increased from 0.03 MPa up to 1.42 MPa, which indicate that the composite films had the highest mechanical strength. Water vapor permeability analysis shows lower water vapor permeability of 9.93 g mm/m2h kPa, indicates that GA/PA66 film’s water vapor barrier performance was improved. Solvent resistance analysis indicates that PA66 could effectively improve the ability of GA to resist dissolution. This work indicates that SBS has great promise for rapid preparation of nanofibrous film for food packaging, and PA66 can be applied to the modification of gelatin film.Keywords:solution blow spinning;gelatin;nylon 66;modification;rapid fabrication
研究领域:
材料科学
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纳米技术
·
食品包装
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Polymers
·
2019
·Vol. 11
·期 2
·364
·
IF 3.164
Ya Liu,Gaokai Zhang,Xupin Zhuang,Sisi Li,Lei Shi,Weimin Kang,Bowen Cheng,Xianlin Xu
In this work, a nylon 6 nanofibrous membrane was prepared via solution blowing technology and followed hot-press as scaffold for nanofiltration. The structure and properties of the hot-pressed nylon 6 nanofibrous membrane (HNM) were studied the effect of hot-pressing parameters and areal densities. Then an ultra-thin polyamide (PA) active layer was prepared by interfacial polymerization on HNM. The effects of nanofibrous scaffolds on the surface properties of ultra-thin nanofiltration membranes and their filtration performance were studied. Results showed that the nylon 6 nanofibers prepared at a concentration of 15 wt % had a good morphology and diameter distribution and the nanofibers were stacked more tightly and significantly reduced in diameter after hot pressing at 180 °C under the pressure of 15 MPa for 10 s. When the porous scaffold was prepared, HNM with an areal density of 9.4 and 14.1 g/m2has a better apparent structure, a smaller pore size, a higher porosity and a greater strength. At the same time, different areal densities of HNM have an important influence on the preparation and properties of nanofiltration membranes. With the increase of areal density, the uniformity of HNM increased while their surface roughness and pore size decreased, which is beneficial to the establishment of PA barrier layer. With areal density of 9.4 and 14.1 g/m2, the as-prepared nanofiltration membrane has a smoother surface and more outstanding filtration performance. The pure water flux is 13.1 L m−2h−1and the filtration efficiencies for NaCl and Na2SO4are 81.3% and 85.1%, respectively.Keywords:solution blowing;nylon 6 nanofibrous membrane;scaffold;nanofiltration
研究领域:
材料科学
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纳米技术
·
膜技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Yibo Liu,Chao Jia,Han Zhang,Haiyang Wang,Pan Li,Luna Jia,Feng Wang,Pengfei Zhu,Hao Wang,Lu Yu,Feipeng Wang,Lingxiao Wang,Xin Zhang,You Sun,Bo Li
Particulate matter of 0.3 μm in diameter (PM0.3) poses a serious threat to the environment and human beings. Ultrathin and -light nanofibrous filters with excellent filtration properties can significantly prevent the detrimental effects of these particles. Here, we develop free-standing polyamide PA-66 ultrafine nanofiber papers for PM0.3 filtration using effective and scalable blow and electro-blow spinning techniques. The smallest average fiber diameter is 61.7 nm, which is 2–3 orders of magnitude smaller than that of conventional textiles. Poly(ethylene terephthalate) nonwovens are selected to fabricate free-standing nanofiber papers of various polymers, including polyamide, poly(methyl methacrylate), poly(vinylpyrrolidone), and poly(ethylene oxide) owing to the smooth surfaces of the nonwovens. This underlying principle can be used to create similar free-standing nanofiber papers from other commodity polymers in the future. Mechanisms of capturing particulate matter with different nanofiber morphologies are discussed. Salt and oil particulates are used to characterize the filtration properties. PA-66 papers are promising reusable filters owing to their mechanical particle-capture mechanism. The blow-spun PA-66 papers show filtration performance of 98.75% efficiency and a pressure drop of 125.44 Pa owing to the “slip” effect caused by the ultrasmall diameter. In the electro-blow spinning process, a supplementary voltage supply is conducive to separating nanofiber bundles into random-oriented nanofibers. Electro-blown spun papers possess an ultrahigh efficiency of 99.99% with a reduced areal density of 0.9 g m–2. These PA-66 papers can be used in a variety of applications, such as reusable personal protective equipment, industrial waste gas treatment, and central ventilation purification systems.
研究领域:
材料科学
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环境工程
·
纳米技术
·
过滤技术
✓ 已验证
DOI
PubMed
高影响因子
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
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热能工程
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Wenlu Zhang,Mengzhe Bao,Mengyao Chen,Wenbin Li,Chong He,Weilin Xu
High-performance TiO 2 nanotube materials are highly demanded across various fields spanning thermal insulation, catalyst supports, filtration, and so on. However, the practical applications of hollow nanotubes are constrained by the low efficiency and uncontrollable structural properties. Herein, mass production of flexible and high catalytic hollow Al/Si@TiO 2 nanotubes were realized. Through solution blow spinning and atomic layer deposition processes, TiO 2 coated Al/Si@PAN core–shell nanofiber intermediate product was obtained with high efficiency. Hollow tubular structure of Al/Si@TiO 2 nanotubes with wall thicknesses among 150–350 nm was successfully replicated by sacrificing PAN core fibers template through a high-temperature pyrolysis process. Organic polysiloxane and polyalumina were employed as the internal supports to enhance the toughness and elasticity of the hollow Al/Si@TiO 2 nanotube products. Diameters of hollow Al/Si@TiO 2 nanotubes can be controlled ranging from 0.5-2.5 μm through adjusting the flow rate among 10–30 mL/h and air pressure among 0.2–0.4 MPa. Pyrolyzed hollow Al/Si@TiO 2 nanotubes exhibited remarkable elasticity with the compression strain of over 60 %. Hollow Al/Si@TiO 2 nanotubes demonstrated a methylene blue degradation efficiency of reached 61 % and outstanding reusability over multiple cycles, which held promising potential for utilization in high efficiency purification and remediation of water pollutants.
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
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
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2018
·Vol. 124
·期 5
·1-10
·
IF 1.604
Zhang Xiaohui,Lv Ju,Yin Xueqiong,Li Zhiming,Lin Qiang,Zhu Li
Polystyrene (PS) dissolved in dichloromethane was spun to prepare the nanofibrous polystyrene membranes (NPS) through solution blow spinning with a commercialized airbrush. The influences of spinning conditions on the membrane morphology, density, and porosity were investigated. Through varying the PS concentration (8%, 9%, 10%), gas pressure (0.1, 0.2, 0.3 MPa), and acceptance distance (10, 12, 15, 18 cm), NPS with diameters of 200–1400 nm were prepared. The membranes had high porosity of 83.9%, and super-hydrophobic and super-oleophilic surface. The oil absorbency to motor oil, peanut oil, diesel oil, and heavy oil was 29.35, 27.27, 21.81, and 22.80 g/g, respectively, while that of the commercialized nonwoven polypropylene was 9.34, 9.17, 7.09, and 7.79 g/g, respectively. NPS could separate oil from water surface in several seconds. It was easy to prepare the membrane in situ on the surface of an oil/water mixture and remove the oil while peeling off the membrane, indicating NPS is potential as oil recovery material in large-area oil pollution environment.
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
POLYMER ENGINEERING AND SCIENCE
·
2018
·
IF 1.551
Ju Lv,Xueqiong Yin,Rongguo Li,Junhua Chen,Qiang Lin,Li Zhu
Superhydrophobic composite nanofibrous membranes(PP) were prepared from polycaprolactone (PCL)/polystyrene (PS) through solution blow spinning with an airbrush for oil adsorption. PP membranes were characterized by fourier transform infrared spectroscopy, scanning electron microscopy, water contact angle, X-ray Photoelectron Spectroscopy, X-ray diffractometer, and thermogravimetric analysis instrument. The effects of mass ratio of PCL and PS on the morphology, porosity, density, cyrstallinity, thermal stability, and oil adsorption ability were investigated. PP membranes had higher density than PCL and PS, while better hydrophobicity. The saturation adsorption capacity of PP to peanut oil, motor oil, and diesel oil is 16.89 g/g, 20.33 g/g, and 12.17 g/g, respectively. After 6 cycles of reutilization, the adsorption capacity to peanut oil, motor oil, and diesel oil remained at 6.16, 7.46, and 5.33 g/g, respectively, higher than that of pure PCL membrane.The water/oil adsorption selectivity of PP was about 7:100. PP had higher oil adsorption capacities and better water/oil adsorption selectivity than the commercial oil absorbent polypropylene. PP membrane could be prepared and used in situ to separate oil from oil/water mixture. POLYM. ENG. SCI., 59:E171–E181, 2019. © 2018 Society of Plastics Engineers
研究领域:
材料科学
·
环境工程
✓ 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）