ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Liyun Zhang,Yi He,Lan Ma,Jingyu Chen,Yi Fan,Shihong Zhang,Heng shi,Zhenyu Li,Pingya Luo
Filtration membranes, with good antifouling performance and robust solvent resistance (e.g., organic solvents or highly acidic/alkaline/saline solvents), that can effectively purify complex polluted water systems are especially demanded in practice but present a challenge to be conquered. Herein, a simple method has been demonstrated to address the obstacles, applying the stabilized polyacrylonitrile (SPAN) nanofiber/β-FeOOH nanorod composite membrane as a model. In this work, simply stabilizing PAN nanofibers in air can achieve robust solvent resistance against organic solvents and strong inorganic acidic/alkaline/saline solutions. Hydrophilic β-FeOOH nanorods were anchored onto SPAN nanofibers of our electrospun membrane and achieve superhydrophilicity (0°)/underwater superoleophobicity (>155°) for various oils. More importantly, the SPAN/β-FeOOH nanofibrous membrane exhibits robust mechanical strength (274 MPa of Young’s modulus), excellent chemical stability, fast separation flux (2532–10146 L m–2 h–1), and satisfying removal ratio (>98.2%) against insoluble oils and soluble cationic dyes. In addition, good photocatalytic activity against organic pollutants provides our membranes with excellent flux restorability and a long-term use capacity. These outstanding performances endow our membrane with a great potential application in purifying polluted aquatic systems in worldly harsh conditions.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
水处理
✓ 已验证
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Xingyao Zeng,Zhanghao Xu,Hangyu Mo,Jian Zhuang,Zengchao Xing,Yage Xie,Jiawei Qiu,Ji Yu,Guojun Jiang,Xiangyu Ye
Developing efficient absorbents for the cleanup of highly viscous crude oil spills is of critical importance. The current light-to-heat/electric-to-heat methods to reduce the viscosity of crude oil were limited by the complicated preparation processes, weather conditions and potential risk of electrical leakage. Here, a robust superhydrophobic composite Fe 3 O 4 /PAN/PBA nanofibrous aerogel (NFA) with excellent photo/magneto-thermal performance for efficient all-weather viscous crude oil spill remediation was fabricated by integrating facile blend electrospinning and freeze-drying techniques. Due to its superhydrophobicity/superoleophilicity (water contact angle of 151.3° and oil contact angle of 0°) and anisotropic microchannel structure, the composite NFA exhibited rapid adsorption kinetics and ultra-high absorption capacity (54.4 − 97.1 g/g) toward various low-viscosity oils and organic solvents. Meanwhile, it displayed outstanding mechanical recyclability (84.07 % recovery after 200 cycles at 80 % strain) and reusability (86.74 % of the initial capacity after 10 absorption-squeezing cycles). Notably, the composite NFA also showed excellent photo/magneto-thermal conversion efficiency, allowing it to achieve continuous and efficient cleanup of crude oil (recovery rate of 6.67 x10 3 kg m −3 h −1 ) via peristaltic pumping. Therefore, this material holds great potential for all-weather cleanup of crude oil spills.
研究领域:
材料科学
·
环境工程
·
纳米技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2023
·
IF 9.5
Mao Guo,Jing Xiong,Xuanyang Jin,Shengjun Lu,Yufei Zhang,Jian Xu,Haosen Fan
Bicomponent polyacrylonitrile/Poly(vinylidene fluoride-co-hexafluoropropylene) (PAN/PVDF-HFP) Janus nanofibers based hybrid membrane was successfully prepared by parallel electrospinning technology. Subsequently, modified PAN/PVDF-HFP hybrid membrane (M-PAN/PVDF-HFP) was further fabricated via mimicking the adhesive of mussel by coating dopamine alternative through polymerization of catechol and tetraethylenepentamine (TEPA) in weakly alkali solution. M-PAN/PVDF-HFP maintains the abundant pore structure of the electrospun hybrid membrane and further provides excellent electrolyte infiltration with high porosity (82.09%) and outstanding electrolyte retention (553.23%). Simultaneously, the mechanical strength of the separator was significantly improved (14.36 MPa). Electrochemical studies displayed that the M-PAN/PVDF-HFP composite membrane delivered superior ion conductivity (2.81 mS/cm) and wide electrochemical stability window (∼5.25 V). The cell assembled by M-PAN/PVDF-HFP separator presented outstanding rate capability with high specific capacity of 147 mAh/g at 1 C and excellent cycle stability with discharge capacity of 120 mAh/g at 1 C after 600 cycles. Furthermore, M-PAN/PVDF-HFP separator exhibited ultra-flexibility with remarkable electrochemical performance after repeated bending for 500 to 1000 time. This work provides new insights into polyamine modified hybrid membranes for the potential practical applications in lithium-ion batteries separator.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
DOI
高影响因子
Small
·
2024
·
IF 13
Jiahui Lin,Jintao Huang,Zhanhu Guo,Ben Bin Xu,Yan Cao,Juanna Ren,Hua Hou,Yongshuang Xiao,Mustafa Elashiry,Zeinhom M. El-Bahy,Yonggang Min
With the rapid development of electronic industry, it's pressing to develop multifunctional electromagnetic interference (EMI) shielding materials to ensure the stable operation of electronic devices. Herein, multilayered flexible PEG@PAN/MXene (Ti 3 C 2 T x )/PVDF@SiO 2 (PMF) composite film has been constructed from the level of microstructure design via coaxial electrospinning, coating spraying, and uniaxial electrospinning strategies. Benefiting from the effective encapsulation for PEG and high conductivity of MXene coating, PEG@PAN/MXene composite film with MXene coating loading density of 0.70 mg cm −2 exhibits high thermal energy storage density of 120.77 J g −1 and great EMI shielding performance (EMI SE of 34.409 dB and SSE of 49.086 dB cm 3 g −1 ) in X-band (8–12 GHz). Therefore, this advanced composite film can not only help electronic devices prevent the influence of electromagnetic pollution in the X-band but also play an important role in electronic device thermal management. Additionally, the deposition of nano PVDF@SiO 2 fibers (289 ± 128 nm) endowed the PMF composite film with great hydrophobic properties (water contact angle of 126.5°) to ensure the stable working of hydrophilic MXene coating, thereby breaks the limitation of humid application environments. The finding paves a new way for the development of novel multifunctional EMI shielding composite films for electronic devices.
研究领域:
材料科学
·
电气工程
·
纳米技术
·
高分子科学
·
热工程
·
电磁兼容
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Tian-Zhi Jia,Jin-Peng Lu,Xin-Yao Cheng,Qian-Cheng Xia,Xue-Li Cao,Yong Wang,Weihong Xing,Shi-Peng Sun
This study aims to develop a new strategy to fabricate nanofiltration (NF) membranes with high removal efficiency for heavy metal ions in wide acidic pH range. Unlike conventional polyacrylonitrile (PAN) based thin film composite (TFC) membranes that requires multiple coating steps, the new NF membrane was fabricated through direct interfacial polymerization with positively charged polyethyleneimine (PEI) on PAN substrates blended with sulfonated polyarylene ether benzonitrile (SPEB). The unique surface migration effect of SPEB led to a smoother, more hydrophilic surface and sponge-like structure of the substrate. Such a modified structure was found to be crucial to achieve smaller pore size as well as better adhesion of the selective layer and the substrate of the modified TFC membrane. The resultant NF membrane has a reasonably high pure water permeability of 7.62 ± 0.81 LMH·bar −1 , and a molecular weight cut-off of 300 Da. It achieved a reasonably high rejection towards heavy metal cations such as Pb 2+ , Cd 2+ , Ni 2+ over 93.0% in a wide acidic pH range. This work may provide insightful guidelines for upgrading current NF membranes for heavy metal removals in harsh acidic environments.
研究领域:
材料科学
·
环境工程
·
膜技术
·
水处理
✓ 已验证
产品关联
DOI
高影响因子
Materials Today Chemistry
·
2023
·
IF 7.3
Mao Guo,Siyang Dong,Jing Xiong,Xuanyang Jin,Pengfei Wan,Shengjun Lu,Yufei Zhang,Jian Xu,Haosen Fan
Flexible core-shell polyacrylonitrile (PAN)/carbon nanotubes (CNTs)@Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)/Uio-66-NH 2 (PC@PU) hybrid nanofiber membrane was prepared by coaxial electrospinning technology. PAN polymer and CNTs particles were used as core to improve the membrane structure stability for further ensuring the thermal stability of the separator. PVDF-HFP and Uio-66-NH 2 nanoparticles were applied to reinforce the affinity of separator to electrolyte. The PC@PU composite membrane delivered high thermal stability and fantastic electrolyte affinity (545.76%). Furthermore, compared with Celgard 2325 commercial membrane, the PC@PU composite membrane exhibited higher porosity (80.22%) and higher Li + conductivity (3.43 mS/cm), leading to superior rate performance and long-term cycle stability. The cell with the PC@PU hybrid membrane displayed high specific capacity of 143 mAh/g at 1C and only 0.0259% capacity attenuation of each cycle after 1000 cycles. In addition, the PC@PU composite membrane demonstrated remarkable flexibility, and the cells with bent separators exhibited outstanding electrochemical performance. Hence, the PC@PU hybrid nanofiber membrane can pave a way for the further application in the field of secondary batteries separator.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2023
·
IF 5.2
Chao Hou,Md All Amin Newton,Binjie Xin,Tingxiao Li
Wound infection caused by excessive exudate leads to overhydration of wounds and prevents wound healing. Thus, there is a need for a wound dressing to be developed that can unidirectionally export excess biological fluid while inhibiting bacterial infection. Herein, a nanofibrous bilayer membrane with a unidirectional water transport function was fabricated by electrospinning as a novel wound dressing, which can export excess biological fluid efficiently and further inhibit bacterial infection. The inner layer of the bilayer nanofiber membrane is polylactic acid (PLA)-zinc oxide (ZnO) nanofibers, which are hydrophobic and antibacterial. The outer layer is polyacrylonitrile (PAN)-sodium polyacrylate (SPA) nanofibers, which are hydrophilic and liquid-absorbent. The bilayer nanofibrous membrane's morphology, mechanics, thermal stability, wettability , water absorption, gas permeability, and unidirectional water transport ability were characterized and evaluated. The study showed that the nanofibrous bilayer membrane exhibited excellent physicochemical properties and biological performance, and its mechanical properties can reach 4.6 MPa. In addition, when the thickness of the hydrophobic layer is 3 µm and the thickness of the hydrophilic layer is 44 µm, the double-layer fiber membrane can effectively export the excess biological fluid in 5.09 s and prevent the wound from wetting again. The nanofibrous bilayer membrane with excellent water absorption, air permeability , thermal stability, and mechanical strength provides a feasible solution for chronic wound healing.
研究领域:
材料科学
·
生物医学工程
·
纳米技术
·
伤口护理
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Yan Huang,Sixian Chen,Yi Li,Qianbing Lin,Yibo Wu,Qisong Shi
Polyacrylonitrile (PAN) nanofiber-based flexible piezoelectric sensors are recognized for their applicability in wearable electronic devices, personal health monitoring, and motion detection. This research explores the impact of dual fillers, MXene and polydopamine-modified zinc oxide (PDA@ZnO), on the characteristics of PAN-based piezoelectric composite nanofiber films, including planar zigzag conformation content, dielectric, ferroelectric, piezoelectric, and mechanical properties. By integrating PDA@ZnO as a filler, PAN/MXene/PDA@ZnO-5 (PMPO) piezoelectric sensors were developed, showcasing enhanced piezoelectric sensing capabilities. These sensors achieved a sensitivity of 28.56 V/N across a broad linear range, with superior mechanical stability and durability across 3000 loading–unloading cycles, and exhibited swift response and recovery times of 49 ms and 40 ms, respectively. Furthermore, their unique fiber structure and flexibility, when interfaced with the human body, enable the detection of minute physiological movements and the conversion of varied motions into distinct voltage outputs. Thus, these sensors offer considerable promise for applications in human health monitoring and motion posture correction.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
可穿戴技术
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry B
·
2023
·Vol. 11
·期 34
·8216-8227
·
IF 7
Zhipeng Yuan,Jing Zhang,Xinfu Zhao,Sijia Liu,Shimo Yu,Xiaochan Liu,Xinen Zhang,Xibin Yi
Rapid and safe disinfection and exudate management are two major challenges in infected wound care. Therefore, in this work, we developed a novel wound dressing via encapsulating ZIF-8-derived carbon nanoparticles in a hydrophilic nanofiber sponge to address severe wound infection and heavy exudate problems. The dressing can effectively kill bacteria through chemo-photothermal synergistic therapy. Meanwhile, the hydrophilic nanofiber sponge can quickly absorb wound exudate around the wound and accelerate the evaporation rate of liquid through the photothermal effect and its own structure; therefore, it is possible to remove excess liquid and regulate its wetness. In this way, it prevents the problem of wound overhydration often caused by hydrophilic dressings. In our experiment, the dressing showed good antibacterial performance and biocompatibility in vitro and could effectively control wound infection, absorb wound exudate and promote skin wound healing in vivo. Its good therapeutic effect is not only due to effective infection control and wound exudate management, but also because the structure of nanofibers similar to an extracellular matrix provides basic physical support and structural signals conducive to skin tissue regeneration.
研究领域:
材料科学
·
纳米技术
·
生物医学工程
·
伤口愈合
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2024
·
IF 8
Yan Xu
The pursuit of clean energy generation and environmental preservation is of utmost importance for societal progress. However, couple clean energy production and pollution control is still a difficulty. In this study, a novel electrospun composite mat, with nano zero valent iron (Fe 0 , nZVI) encapsulated into polyacrylonitrile (PAN) nanofibers was acted as a catalyst. The activation energy (E a ) for the hydrolysis of NaBH 4 to produce hydrogen is 22 kJ·mol −1 , hydrogen atom utilization efficiency (HGE) of NaBH 4 is 60.80%. Three kinds of organic dyes 4-nitrophenol (4-NP), methylene blue (MB), and Rhodamine B (RhB) were served as the model pollutant, to construct NaBH 4 -organic system for energy production and pollution reduction. The NaBH 4 -organic system demonstrates a collaborative capability to simultaneously remove organic pollutants and generate hydrogen, with a coupling equilibrium point between the two processes. The hydrogen generation rate (HGR) and HGE increased with the concentration of pollutants increased. The degradation of 4-NP, MB, and RhB followed pseudo-first-order kinetics, with RhB degrading dosage 20 and 44 times higher than 4-NP and MB, respectively. H 2 and H· contributed to the organic degradation. nZVI directly participated in the formation H 2 and H·. PAN@Fe 0 possessed good recyclability and moderate cost. The degradation process adhered to the classical surface reaction controlled Langmuir-Hinshelwood (L-H) model. The integration of synergistic production capacity and pollutant degradation aligns well with the principles of green chemistry and sustainable development. This study demonstrates a novel approach to no precursor loss catalysts preparation, efficient production clean H 2 , advanced treatment of dye-containing wastewater, carbon neutral operation of sewage treatment plant.
研究领域:
环境科学
·
材料科学
·
化学工程
·
可持续能源
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Sustainable Chemistry & Engineering
·
2021
·
IF 8.198
Kun Gao,Mengxia Shen,Chao Duan,Chuanyin Xiong,Lei Dai,Wei Zhao,Wanli Lu,Shujiang Ding,Yonghao Ni
A reasonable design of the pore structure of carbon nanofiber-based electrocatalysts can effectively accelerate the slow kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER). In this study, we report an electrospinning method by adding supramolecular coordination polymers to selected polyacrylonitrile (PAN) and cellulose acetate (CA) spinning systems. Benefiting from the difference in the thermal decomposition temperature of each component during the pyrolysis process, CA was applied as a sacrificial template to prepare a high-efficiency ORR/OER bifunctional electrocatalyst (Co-N@PCNFs-0.2) with directional hollow channels and a hierarchical pore structure. This unique multichannel carbon nanofiber morphology and hierarchical pore structure led to abundant active sites while also boosting the electron transfer rates. Notably, applying Co-N@PCNFs-0.2 as an air electrode to Zn–air batteries results in a large specific discharge capacity of 884 W h kgZn–1 and a maximum power density of 151 mW cm–2.
研究领域:
材料科学
·
电化学
·
纳米技术
·
能源存储
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Huiyi Wu,Yanxin Wang,Xiaotong Zhang,Wei Xing,Leixuan Li,Hanwen Wang,Linjun Huang,Jianguo Tang
Efficient treatment of oily wastewater remains a significant challenge, particularly for rapid emulsion separation under gravity-driven conditions. Among existing strategies, membrane separation has attracted considerable attention due to its high operational efficiency and simplicity. This study integrates electrospinning and electrostatic spraying to fabricate a high-performance, antifouling fibrous membrane with hierarchical roughness and amphiphilicity. The resulting porous amphiphilic PAN/PVP-PAN/CB membrane demonstrates exceptional separation performance for both oil-water mixtures and emulsions under gravity, achieving remarkable water fluxes of ∼62,946.4 L·m⁻²·h⁻¹ (mixtures) and 1780.4 L·m⁻²·h⁻¹ (emulsions), with separation efficiencies exceeding 99 % for all systems. The membrane also exhibits robust cycling stability. This work presents a novel PAN/PVP- PAN/CB nanofibrous membrane with outstanding oil-water separation capability and practical processability, offering a sustainable material solution for environmental remediation.
研究领域:
环境科学
·
材料科学
·
化学工程
·
纳米技术
✓ 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）