ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Ruonan Yin,Zhaohao Zhang,Chuan Shi,Jixiao Li,Zhaoyan Luo,Jiangtao Hu,Yongliang Li,Hongwei Mi,Chuanxin He,Qianling Zhang,Xiangzhong Ren
For exploiting high-energy lithium–metal batteries, it is of utmost importance to develop electrolytes that possess exceptional ionic conductivity and an extensive electrochemical stability range. In this study, 3D PAN nanofibers and polymer electrolytes incorporating various inorganic fillers with different Lewis acid–base properties were fabricated. PAN@Al-SSE exhibits exceptional ionic conductivity (0.48 mS·cm–2 at room temperature), a high Li+ transference number (0.41), and a wide electrochemical window (5.26 V). The device is able to operate stably in Li symmetric cells for more than 1000 h under a potential of 0.03 V under a current density of 0.2 mA·cm–2. Besides, the groundbreaking technology equips high-voltage Li-LiCoO2 solid-state batteries with exceptional cycling performance (91.3% and 82.1% retention after 100 cycles at 0.2 and 1 C, respectively) at room temperature. Mechanistic studies indicate that the Lewis acid–base properties of surface fillers are instrumental and crucial to form a stable solid–electrolyte interphase layer. γ-Al2O3, in particular, with more Lewis acid sites, ensures the dissociation of LiTFSI and induces the excessive decomposition and polymerization of succinonitrile. There exists an equilibrium effect between dissociation and polymerization in a succinonitrile-based solid electrolyte, which plays a critical role in improving the manifestation of succinonitrile-based solid-state lithium cells, especially under high-voltage conditions.
研究领域:
材料科学
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电化学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
·
2025
·
IF 7.8
Zhengkai Wang,Qiaohua Qiu,Xinbo Ding
Microbial infections pose a significant challenge to public health. Traditional personal protective equipment (PPE) often lacks effective antimicrobial activity, potentially leading to secondary transmission and environmental contamination through discarded materials. Herein, we developed durable antimicrobial nanofibrous membranes by one-pot electrospinning of silane-functionalized polyionene-modified polyacrylonitrile (PAN), with in situ self-crosslinking during fiber formation. The polyionenes, synthesized through copolymerization of silane-containing monomers, exhibited antimicrobial efficacy against both bacteria and fungi (minimum inhibitory concentrations of 0.5–128 μg/mL) while exhibiting excellent mammalian cell selectivity. The resulting membranes demonstrated contact-killing antimicrobial effects without leaching, ensuring long-term durability and biological safety. When incorporated as an intermediate filter layer in protective masks, they demonstrated 97.88 % filtration efficiency and obvious antimicrobial activity, highlighting their potential as personal protective applications.
研究领域:
微生物学
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材料科学
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公共卫生
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产品关联
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2019
·Vol. 26
·期 6
·1-11
·
IF 1.53
Zhan Yifei,Guan Xinmei,Ren Erhui,Lin Shaojian,Lan Jianwu
In this work, polyacrylonitrile (PAN) nanofibers were utilized to prepare metal-organic framework (MOF) nanofibrous mats. Herein, 2-methylimidazole (2-MI) was mixed in polymeric solution for electrospinning. Subsequently, zeolitic imidazolate framework (ZIF-8) nanocrystals were growth on the surface of PAN nanofibers through post-treatment. To confirm the structures, ZIF-8/PAN nanofibrous mats were investigated by FTIR, XRD, SEM, and TGA measurements. The results presented uniform ZIF-8/PAN nanofibrous mats were fabricated. Further, ZIF-8/PAN nanofibrous mats were employed for dye adsorption using methylene blue (MB) and malachite green (MG) as models. The optimum dye-adsorption conditions were investigated. The results shown the optimum concentration, temperature and pH value of for MB adsorption were 50 mg/L, 30 °C and pH = 11; for MG absorption were 300 mg/L, 30 °C and pH = 5, respectively. Meanwhile, the results displayed prepared ZIF-8/PAN nanofibrous mats presented well adsorption capacity to MG with a quick adsorption rate, which reached to 1531.94 mg/g. Moreover, MB and MG adsorption isotherms of ZIF-8/PAN nanofibrous mats were best fitted by the Langmuir isotherm model, and the results presented pseudo second-order kinetic equation was more consistent with the MB and MG adsorption processes of the adsorbent. Additionally, ZIF-8/PAN nanofibrous mats are successfully degradation MB under xenon light irradiation.
Graphical abstract
研究领域:
材料科学
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环境科学
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产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2019
·
IF 8.355
Sheng Deng,Xinhui Liu,Jianbo Liao,Hui Lin,Fang Liu
Both multiwalled carbon nanotubes (MWCNTs) and electrospun nanofibers are ideal nanomaterial candidates with great potential in the field of heavy metal ions remediation. In the present study, the advantages of these two nanomaterials were combined with electrospinning method to prepare a novel nanocomposite membrane (NCM) containing improved physical properties and enhanced removal efficiency for metal ions. Modified MWCNTs were initially fabricated by reacting MWCNT-COOH with polyethylenimine (PEI), which was further embedded within polyacrylonitrile (PAN) nanofibers through electrospinning. The structure, morphology and physical property of prepared MWCNT-PEI and NCM (MWCNT-PEI/PAN) were carefully characterized with FTIR, SEM, TEM, mechanical test and contact angle measurements. Compared with plain PAN membrane, the prepared NCM possesses higher mechanical strength and improved hydrophilicity, resulting in high permeation and filtration efficiency. Batch adsorption experiments demonstrated that MWCNT-PEI/PAN nanocomposite membrane exhibited higher adsorption amount for Pb 2+ and Cu 2+ ions compared with other nanocomposite membranes. Additionally, the adsorption processes were elaborated to follow pseudo-second-order kinetic and Langmuir isotherm, indicating the PEI groups embedded in the NCM was the main adsorption active site and chemisorption was the mainly mechanism for the uptake of heavy metal ions. The dynamic adsorption results proved that the designed NCM exhibited improved rejection ability to metal ions with a water flux at 145.8 L m −2 h −1 under 0.2 bar pressure. The NCM could treat 240 mL and 170 mL of 40 mg/L Cu 2+ and Pb 2+ solution while maintaining a drinking water standard of 1 mg/L and 10 µg/L, respectively. The improved membrane performance along with the excellent heavy metal removal efficiency suggests that this novel prepared NCM possess promising potential for heavy metal contaminated water treatment through the process of membrane adsorption.
研究领域:
环境科学
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材料科学
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产品关联
DOI
高影响因子
Catalysts
·
2018
·Vol. 8
·期 12
·628
·
IF 3.465
Lei Wang,Changbo Zhang,Rong Cheng,Jafar Ali,Zhenbo Wang,Gilles Mailhot,Gang Pan
Cyanobacterial blooms can cause serious damage to aquatic ecosystems. However, we have demonstrated that typical algae-blooming speciesMicrocystis aeruginosa (M. aeruginosa)combined with photocatalysts could synergistically facilitate the photodecontamination of tetracycline hydrochloride (TC) and Cr(VI). In this study, for the first time, harmful algae were successfully converted into photoreactive bionano hybrid materials by immobilizingM. aeruginosacells onto polyacrylonitrile (PAN)-TiO2/Ag hybrid nanofibers, and their photocatalytic activity was evaluated. The addition ofM. aeruginosasignificantly improved the photodecontamination, and the reaction rate constant (k) values of TC and Cr(VI) degradation byM. aeruginosa-PAN/TiO2/Ag nanofiber mats were 2.4 and 1.5-fold higher than that of bare PAN/TiO2/Ag nanofiber. Photoreaction caused damage to algae cells, but no microcystin was found that had been photodegraded simultaneously. The effects of various active species were also investigated, and the photodegradation mechanism was proposed. Recycling tests revealed that this flexibleM. aeruginosa-PAN/TiO2/Ag hybrid mat had potential application in the removal of mixed organic and inorganic pollutants with high efficiency and without secondary pollutants. Thus, harmful algae blooms could serve as an efficient materials to remove toxic pollutants in a sustainable way under visible light irradiation.Keywords:Microcystis aeruginosa;PAN nanofiber;TiO2photocatalytic;Ag nanoparticles;tetracycline;Cr(VI)
研究领域:
环境科学
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生物技术
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产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
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2019
·
IF 7.467
Haoran Lai,Wenyue Li,Yang Zhou,Tianyu He,Ling Xu,Siyu Tian,Xiaoming Wang,Zhaoyang Fan,Zhongli Lei,Huan Jiao
Wire-shaped solid-state supercapacitors (WSSCs) receive ever-growing interest for developing electronic textile . How to achieve a high active mass loading with a suitable mesoporous structure and strong adhesion on a bare metal wire are a severe challenge faced by the development of practical WSSCs, which must meet requirements such as high energy and power densities, fast rate capability, as well as flexibility and stability. Here, a new strategy to synthesize the wire-shaped electrode with excellent electrochemical and mechanical performances is reported using a soft aerogel template in a facile dip coating process. Hydrophilically engineered polyacrylonitrile nanofibers by adding glycerol were electrospun on a Ti metal wire to form the sacrificial aerogel template with a huge void volume, in which poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) solution was dip coated to achieve a large mass loading. The capillary effect in the subsequent natural drying process, slow dissolution of the template in a solvent, and PSS etching, together lead to a mesoporous PEDOT thick coating network formed on the metal wire with a high conductivity, strong mechanical strength and intimate interface adhesion. The resulted WSSCs based on Ti/PEDOT electrodes, exhibited a fairly wide potential window, large specific capacitance, ultrahigh rate capability and energy/power densities.
研究领域:
材料科学
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能源存储
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纳米技术
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产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 35
·12644-12651
·
IF 8.067
Zhi-Bin Liang,Xu Chen,Xiang-Ji Liao,Jing-Jing Li,Yue Yang,Cai-Feng Wang,You-Xuan Zheng,Su Chen
Methods allowing the facile synthesis of chiral nanomaterials with interesting chiroptical properties are highly desirable. Herein, guided by fiber-spinning chemistry (FSC), we develop a one-step strategy enabling continuous production of stable chiral perovskite nanocrystals (PNCs) with high photoluminescence (PL) quantum yields (QYs) and circularly polarized luminescence (CPL). The FSC process uses spinning nanofibers of polyacrylonitrile (PAN) as reactors for in situ generation of chiral methylammonium lead bromine (MAPbBr3) PNCs tailored with R-(+)-methylbenzylammonium bromide (R-MBABr) or (S)-(−)-methylbenzylammonium bromide (S-MBABr). The resultant R(S)-MBABr-modified MAPbBr3 PNCs/PAN nanofiber films, referred to as R(S)-PNCs/PAN nanofiber films, show green fluorescence with a high PL QY of up to 88%, and preserve a PL QY of 60% after storage in the atmosphere for 180 days (vs. complete fluorescence quenching in 1 day in air for pristine R(S)-PNCs). Significantly, these nanofiber films exhibit circular dichroism (CD) and circularly polarized luminescence (CPL) with dissymmetry factor (glum) values of 10−3 at room temperature. Structural and optical characterization results confirm that R(S)-MBABr passivates the surface defects of MAPbBr3 PNCs to highly enhance the PL QY, and guarantees chirality transfer into PNCs to cause chiroptical features of CD and CPL, while the PAN nanofiber encapsulation greatly improves the PL stability of chiral PNCs. The R(S)-PNCs/PAN nanofiber films with excellent optical properties and stability are potential candidates for various optoelectronic applications.
研究领域:
材料科学
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光学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2025
·
IF 8.4
Hongyang Ma,Wen Zhang,Kun Yang,Zonglinsong Liu,Wanwan Zhang
Electrospun nanofiber membranes functionalized with metal-organic framework (MOF) are considered as a promising materials for removal contaminants from wastewater. In this study, a bottom-up approach was proposed for the preparation bimetallic MOF based polyacrylonitrile (PAN) electrospun nanofiber membranes. Polydopamine (PDA)-modified PAN nanofiber membranes increased the anchoring of Co/Zn-MOF nanoparticles, further leading to the formation of Co/Zn-MOF@PDA-PAN nanofiber membranes with secondary growth method. With the increasing of 2-MIM concentration, the surface roughness and hydrophilicity of Co/Zn-MOF@PDA-PAN exhibited the increasing tendency. In addition, the antibacterials rates of Co/Zn-MOF@PDA-PAN were 59.6% and 64.9% against Escherichia coli ( E. coli ) and Staphylococcus aureus ( S. aureus ) after 1h, rising to over 99.9% after 24h, demonstrating rapid and effective antibacterial activity. Importantly, membranes showed excellent anti-adhesion properties against two experimental strains. The release of ROS from Co/Zn-MOF could disrupt bacterial physiological activities, leading to their death, which could be the primary antibacterial mechanism of nanofiber membranes. The adsorption isotherm of MOF@PAN was characterized by the Langmuir model, showing a maximum adsorption capacity of 564 mg/g for SY, while kinetic data were best fitted with the pseudo-second-order model. The bimetallic MOF-based nanofiber membranes will be an effective and promising materials for antibacterial applications and water purification.
研究领域:
环境科学
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材料科学
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生物学
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产品关联
DOI
PubMed
高影响因子
FIBERS AND POLYMERS
·
2022
·Vol. 23
·期 12
·3386-3397
·
IF 2.347
Shen Baosheng,Du Chunxiao,Wang Wei,Yu Dan
With the increasingly serious water pollution and human health problems caused by oily wastewater, the task of developing new and efficient oil-water separation materials is becoming urgent. Electrospun nanofiber membranes have been applied to this field due to their high porosity and uniform pore size, but the preparation and mechanism of hydrophilic nanofiber membranes, which can be used in the part of underwater oleophobicity still need to be explored. Herein, we firstly prepare nanofiber membranes containing sulfhydryl groups on the surface by electrostatic spinning of polyacrylonitrile and γ-mercaptopropyltriethoxysilane together, which becomes active sites for the grafting of dimethyldiallylammonium chloride monomers by thiol-ene click chemistry. The resulting modified membranes exhibited hydrophilicity in air and oleophobicity in water, and demonstrated good emulsion separation performance of extremely high permeation flux (742.6 L/(m 2 ·h)), excellent separation efficiency (>96 %), as well as outstanding antifouling performance thanks to the existence of hydration layer on the membrane when underwater. In addition, the membranes can maintain stable hydrophilicity and underwater oleophobicity in complex environments, and display good acid and alkali resistance.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Jiaojie He,Wei Wang,Ruisha Shi,Wenjuan Zhang,Xin Yang,Wenxin Shi,Fuyi Cui
This work described a new strategy of prohibiting the microbial intrusion in drinking water, which consisted of a fast membrane filtration to remove cells and an efficient phosphate starvation to reduce recontamination. The La(OH) 3 nanorod/polyacrylonitrile (PAN) nanofiber membrane filters were made by electrospining and a subsequent in-situ precipitation process. The membrane displayed a high water flux (1010 L m −2 h −1 ) at low pressure (0.1 bar) due to the hydrophilic and highly-porous property of PAN nanofiber matrix. Besides, the membrane presented several remarkable features due to the impregnation of the functional component La(OH) 3 nanorods, such as a reduced pore sizes, an enhanced mechanical property and a positively charged membrane surface, which all supported the great retention of bacteria during microfiltration (the log reduction reached 7). Furthermore, based on the high efficient and high speed binding between Lanthanum and phosphate, the composite nanofibrous filter had an excellent phosphate rejection (97% removal) to achieve the control of bacterial regrowth by nutrient starvation. The antibacterial performance over practical tap water exhibited both a high removal of cells and a great control of recontamination, implying the application potential of this new strategy.
研究领域:
环境科学
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材料科学
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微生物学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 114
·94456-94461
·
IF 3.84
Zhen Zhang,Yanzhou Jiang,Maoqiang Chi,Zezhou Yang,Ce Wang,Xiaofeng Lu
Herein, we report the fabrication of polyacrylonitrile (PAN) nanofibers supported Pd–Pt alloy nanoparticles (PAN/Pd–Pt) through a simple and reliable approach by combining an electrospinning technique and in situ reduction process. The resulting PAN/Pd–Pt membranes are composed of a well-defined fiber-like structure with uniform sizes. Pd–Pt alloy nanoparticles are well dispersed on the surface of PAN nanofibers and the composition of alloy nanoparticles can be regulated through adjusting the feed molar ratio of Na2PdCl4 and K2PtCl4. The obtained products are characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) measurements. The as-prepared PAN/Pd–Pt composite exhibits a remarkable catalytic performance towards the hydrogen generation from the hydrolysis of ammonia borane (NH3BH3, AB). By tuning the composition of the alloy nanoparticles of the nanocatalyst, a turnover frequency (TOF) of 51.9 mol H2 min−1 (mol Pd–Pt alloy)−1 was achieved, much higher than Pd and Pt-based nanocatalysts. In addition, the as-prepared PAN/Pd–Pt composite nanofibers show good recycling stability, as the catalyst can be easily separated from the suspension system. The electrospun nanofiber membrane supported noble metal nanoalloy catalysts shows high potential to find applications for the development of hydrogen generation for clean energy.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2022
·
IF 3.898
Zhiwei Du,Jinxue Cheng,Qinglin Huang,Mingxing Chen,Changfa Xiao
A high performance preoxidized poly(acrylonitrile) (O-PAN) nanofiber membrane with excellent solvent resistance, thermal stability and flexibility was fabricated by the preoxidation of electrospun PAN nanofiber membrane. The performance of resultant O-PAN nanofiber membrane was optimized by altering the PAN concentration and preoxidation temperature. The results showed that the O-PAN nanofiber membrane which made from PAN concentration of 14% (mass) and preoxidation temperature of 250.0 °C have a more optimal comprehensive performance. In the long-term separation test of SiO 2 particle (1 μm) in DMAc suspension, the permeate flux of O-PAN nanofiber membrane stabilized at 227.91 L·m −2 ·h −1 (25 °C, 0.05 MPa) while the SiO 2 rejection above 99.6%, which showed excellent solvent resistance and separation performance. In order to further explore the application of the O-PAN nanofiber membrane, the O-PAN nanofiber membrane was treated with fluoride and used in oil/water separation process. The O-PAN nanofiber membrane after hydrophobic treatment showed excellent hydrophobicity and good oil/water separation performance with the permeate flux about 969.59 L·m −2 ·h −1 while the separation efficiency above 96.1%. The O-PAN nanofiber membrane exhibited a potential application prospect in harsh environment separation.
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）