Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Chao Wang,Dayong He,Hui Zhao,Ce Wang,Kaizhong Wang
Levofloxacin is an emerging contaminant that threatens the aquatic organisms and human health. Bi 2 WO 6 -based heterojunction materials exhibit positive photocatalytic degradation activity under visible light with highly stable hierarchical nanostructures for levofloxacin remediation. However, recycling in practical applications is challenging. Herein, a hybrid nanofibrous film comprising BiOBr nanoplates on a layered Bi 2 WO 6 nanofiber was successfully synthesized using electrospinning, a solvothermal method, and successive ionic layer adsorption and reaction (SILAR). The size and quantity of BiOBr nanoplates grown on the fibers are controlled by adjusting the number of SILAR cycles. The BiOBr nanostructure obtained on the surface of the nanofibers controlled the photocatalytic activity of the sample. The resulting film exhibited superior degradation efficiency toward levofloxacin under visible-light irradiation due to its solid heterostructure, large specific surface area, high porosity, and enhanced visible-light response. The degradation efficiency of levofloxacin reached 95.25% after the system was exposed to visible light for 120 min, and five cyclic experiments demonstrated its excellent stability and reuesability. The Bi 2 WO 6 /BiOBr/polyacrylonitrile nanofibrous film provides a new strategy for developing high-tech equipment and other applications in environmental remediation.
研究领域:
环境科学
·
材料科学
·
纳米技术
·
光催化
✓ 已验证
产品关联
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Hao Qian,Yanqing Xu,Chenfei Lin,Geting Xu,Tong Mu,Edison Huixiang Ang,Shanshan Yang,Junbin Liao,Jiangnan Shen
The synthesis of high-quality two-dimensional covalent organic frameworks (2D COFs) under mild conditions is crucial for their wide scale industrial application. Therefore, the advancement of the unidirectional diffusion synthesis (UDS) method has garnered significant attention. A comprehensive understanding of the diffusion dynamic occurring between the two phases is vital for optimizing reaction times and enhancing the growth conditions of highly crystalline COF films. In this work, we employed the UDS method, explored through various characterization tests, to fabricate 2D COFs on commercial PAN ultrafiltration membranes. Our study shows that the COF layer forms on one side contacting with the organic phase, regardless of whether the front side of the PAN-based film is exposed to the aqueous or organic phase. Through the different reaction times, it was found that the 2-min treatment yielded the optimal performance, with a pure water permeability coefficient of approximately 98 L·m −2 ·h −1 ·bar −1 , along with a retention rate of exceeding 95 % for both CR and AR 120. Furthermore, it surpassed the interfacial polymerization method in terms of both stability and retention capacity for EBF molecules with molecular weights under 500 g·mol −1 .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2021
·Vol. 26
·期 23
·7326
·
IF 4.412
Xin Meng,Ye Wang
Drug repurposing can quickly and effectively identify novel drug repurposing opportunities. The PA endonuclease catalytic site has recently become regarded as an attractive target for the screening of anti-influenza drugs. PA N-terminal (PAN) inhibitor can inhibit the entire PA endonuclease activity. In this study, we screened the effectivity of PANinhibitors from the FDA database through in silico methods and in vitro experiments. PANand mutant PAN-I38T were chosen as virtual screening targets for overcoming drug resistance. Gel-based PA endonuclease analysis determined that the drug lifitegrast can effectively inhibit PANand PAN-I38T, when the IC50is 32.82 ± 1.34 μM and 26.81 ± 1.2 μM, respectively. Molecular docking calculation showed that lifitegrast interacted with the residues around PA or PA-I38 T’s active site, occupying the catalytic site pocket. Both PAN/PAN-I38T and lifitegrast can acquire good equilibrium in 100 ns molecular dynamic simulation. Because of these properties, lifitegrast, which can effectively inhibit PA endonuclease activity, was screened through in silico and in vitro research. This new research will be of significance in developing more effective and selective drugs for anti-influenza therapy.Keywords:lifitegrast;virtual screening;drug repurposing
研究领域:
药理学
·
病毒学
·
计算生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Desalination and Water Treatment
·
2024
·
IF 1
Temitope F. Ajibade,Jiaoxing Xu,Huali Tian,Lunhui Guan,Kaisong Zhang
Removal of emulsified oil droplets less than 20 μm and maintaining operational stability remains a key concern in the field of oily wastewater treatment. In this work, a major breakthrough was achieved via modification of polyacrylonitrile/polyvinylidene fluoride (PAN/PVDF) blended ultra-filtration (UF) membrane with oxidized multiwall carbon nanotubes (O-MWCNT) to tailor the membrane chemical properties for boosted oil and water separation. Overall, a high separation performance of oily emulsion (99%) and simultaneous increase in flux up to 65% was achieved using the novel O-MWCNT/PAN/PVDF membrane. Moreover, the performance of the O-MWCNT/PAN/PVDF membrane was consistent after 28-cycles of oil separation and the antifouling properties were exceptionally enhanced by 96%. In addition, there was a significant decrease in fouling in terms of the cake, pore, and intrinsic resistance. Furthermore, evidence of even dispersal of nanofillers was confirmed by an increase of casting solution viscosity with increasing O-MWCNT. Consequently, this provides a remarkable mechanical/tensile strength of 5.94 MPa, and 16.05% elongation of the O-MWCNT/PAN/PVDF fingerlike structured UF membrane. The novel O-MWCNT/PAN/PVDF membrane demonstrated promising properties that balanced the membrane tradeoff between permeability and selectivity, as well as, improved mechanical strength and operational stability that can elongate the life span of the membrane in oily wastewater treatment.
研究领域:
膜技术
·
水处理
·
纳米材料
·
分离科学
·
环境工程
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·
IF 5.8
Fei Li,Runwu Miao,Huanyu Zhao,Shumin Li,Qiqi Song,Zhe Yu,Xurui Liu,Sai Wang,Xiaoyan Liu,Jianyong Yu,Bin Ding
Materials with effective thermal insulation performance are critically important for people living in extremely cold environments. However, the thermal insulation materials fabricated by conventional methods typically suffer from excessive bulkiness, inadequate thermal insulation properties, and limited functionality. Herein, we report lightweight nanofibrous sponges with integrated thermal insulation, photothermal heating, and antibacterial performance via a facile and scalable solution air-assisted electrospinning strategy. By exploiting the humidity-induced phase separation during jet stretching, curly nanofibers are fabricated and entangled into a three-dimensional structured assembly with high porosity and ultralow volume density (4.01 mg cm–3). The resulting nanofibrous sponges also exhibit excellent mechanical robustness, which can sustain loads up to 5000 times their own weight. Furthermore, the incorporation of monolayer graphene endows the sponge with efficient solar-to-thermal energy conversion while preserving its porous structure. Consequently, the obtained sponge for thermal insulation achieves a low thermal conductivity of 27.85 mW m–1 K–1 and rapid temperature increase to 52.6 °C within 5 min under simulated solar irradiation, together with outstanding antibacterial activity (99.9%). This work provides a practical avenue toward multifunctional thermal insulation materials for wearable protection and extreme-environment applications.
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2026
·
IF 7.8
Kun Liu,Shuying Li,Youmin Sun,Xinwang Zhou,Jun Chen,Yang Song,Baosen Liu,Bing Xu,Feiyong Chen
Solar-driven interfacial evaporation desalination has been widely used in seawater desalination due to its cleanliness, efficiency, and sustainability advantages. However, the evaporation systems present a synergistic requirement for the total evaporation rate and salt collection. In this work, a photothermal Janus polyacrylonitrile/polyvinylidene fluoride-carbon black nanofibrous membrane (PAN/PVDFC NFM) with synergistic optimization of high light absorption rates and hydraulic transport was produced using electrospinning technology. Meanwhile, a tailored suspended solar-driven interfacial evaporator based on the Janus PAN/PVDFC NFM was designed to collect freshwater and salt resources. The results show that the evaporator achieves a total evaporation rate of 1.85 kg m–2 h–1 under 1 kW m–2 irradiation. Notably, the Janus PAN/PVDFC NFM-based evaporator exhibited stable adaptability to organic dye wastewater, high-salinity brine, and acidic and alkaline wastewater. Moreover, its adjustable structural mechanism enables the efficient collection of freshwater and salt resources. This study provides a promising pathway for the collection of freshwater and salt resources through tailored solar-driven interfacial desalination systems.
✓ 已验证
DOI
PubMed
高影响因子
ChemistrySelect
·
2026
·Vol. 11
·期 35
·e74546
·
IF 2.3
Ruijie Yang,Yu Wang,Yuhui Ao,Weikang Zhao,Yunhui Zhao,Yu Liu
The thermal management of polyacrylonitrile (PAN) precursors during thermo-oxidative stabilization (TOS) presents a significant challenge in carbon fiber (CF) manufacturing, primarily due to intense and localized exothermic reactions that can lead to structural defects. To mitigate this issue, the present work by proposing allyl acrylate (ALA) as ester-functional comonomer for precursor modification. A series of terpolymers poly (acrylonitrile-itaconic acid-allyl acrylate) [P(AN-IA-ALA)] with varied ALA content were synthesized through solution-based free radical polymerization. Comprehensive characterization were conducted to elucidate the role of ALA in precursor properties. XRD results demonstrate that ALA incorporation perturbs molecular chain ordering, resulting in reduced crystallinity. FT-IR spectroscopy further verifies that ALA markedly facilitates the TOS process, promoting the formation of cyclic ladder structures and enhancing the overall cyclization degree. According to the DSC and TGA reveal that, relative to the PAN homopolymer, the terpolymer undergoes cyclization at a lower initiate temperature, exhibits a broadened and attenuated exothermic profile, and presents a reduced activation energy for cyclization. Collectively, these enhancements translate into significantly improved stabilization characteristics, indicating that the P(AN-IA-ALA) is a potential candidate for use as a potential PAN-based precursor candidate. Graphical The thermal management of polyacrylonitrile (PAN) precursors during thermo-oxidative stabilization (TOS) presents a significant challenge in carbon fiber (CF) manufacturing, primarily due to intense and localized exothermic reactions that can lead to structural defects. To mitigate this issue, the present work by proposing allyl acrylate (ALA) as ester-functional comonomer for precursor modification. A series of terpolymers poly (acrylonitrile-itaconic acid-allyl acrylate) [P(AN-IA-ALA)] with varied ALA content were synthesized through solution-based free radical polymerization. Comprehensive characterization were conducted to elucidate the role of ALA in precursor properties. XRD results demonstrate that ALA incorporation perturbs molecular chain ordering, resulting in reduced crystallinity. FT-IR spectroscopy further verifies that ALA markedly facilitates the TOS process, promoting the formation of cyclic ladder structures and enhancing the overall cyclization degree. According to the DSC and TGA reveal that, relative to the PAN homopolymer, the terpolymer undergoes cyclization at a lower initiate temperature, exhibits a broadened and attenuated exothermic profile, and presents a reduced activation energy for cyclization. Collectively, these enhancements translate into significantly improved stabilization characteristics, indicating that the P(AN-IA-ALA) is a potential candidate for use as a potential PAN-based precursor candidate.
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Guijuan Liu,Xiao Xiao,Jie Wang,Yao Liang,Zhenrong Zhou,Weixing Li
The development of ethanol dehydration membranes with superior separation performance and long-term stability is an essential objective for pervaporation. HOF-21 with pore size of 3.6 Å could make way for water transportation while rejecting ethanol molecules. Here, amine-modulated HOF-21 (HOF-21-a) was proposed to dope into the sodium alginate (SA) separation layer on the polyacrylonitrile (PAN) substrate for ethanol dehydration. Molecular simulation results confirmed the superior water permeance of the HOF-21-a membrane. To enhance the interfacial bonding strength, polyethyleneimine (PEI) and catechol (CT) were coated onto the PAN substrate and crosslinked to form a robust network between the top separation layer and the support layer. The novel HOF-21-a@SA/M-PAN membrane, incorporating a hydrogen-bonded organic framework, was designed for efficient ethanol dehydration. Experimental results demonstrated that the prepared composite membrane exhibited excellent separation performance at a PEI/CT mass ratio of 1:1 and a HOF-21-a loading of 1.0 wt%. Specifically, the permeate flux increased significantly from 606 g·m −2 ·h −1 to 2389 g·m −2 ·h −1 with the separation factor improved from 153 to 2267 at 75 °C. Additionally, the composite membrane demonstrated outstanding long-term stability. The newly developed membrane offers a promising solution for organic solvent dehydration.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2021
·Vol. 56
·期 32
·18147-18161
·
IF 4.22
Zhao Xu,Li Wanwan,Li Fang,Hou Yijun,Lu Tong,Pan Yu,Li Jinlei,Xu Yangyang,He Jianxin
Abstract There is an urgent need to develop flexible yarn-type supercapacitors with excellent electrochemical and mechanical properties for flexible energy storage devices in portable and wearable electronics. In this study, graphene oxide (GO) nanosheets and polyacrylonitrile (PAN)-GO nanofibres were coated on the surface of Ni-plated cotton yarn (NCY) via conjugate electrospinning technology, followed by chemical deposition of a polypyrrole (PPy) layer through in situ polymerisation of pyrrole, obtaining a flexible wearable PPy@GO/PAN-GO@Ni-coated cotton core-spun yarn (PGPG/NCY) electrode. The synergetic effect of NCY, GO/PAN-GO nanofibres, and PPy nanoparticles imparted a hierarchically porous structure, good conductivity, and high tensile strength (71.43 MPa) to this electrode. A flexible symmetric all-solid-state two-ply yarn supercapacitor based on PGPG/NCY electrodes was assembled. This yarn supercapacitor exhibited a high areal specific capacitance (28.34 mF cm −2 ) and high energy density (3.98 μWh cm −2 ), which are superior to those of other yarn supercapacitors. The capacitance retention of this yarn supercapacitor remained at 90.2% after 1000 cyclic voltammetry cycles and 100% at different bending angles; the yarn supercapacitor exhibited high electrochemical performance and cycling stability. Thus, the proposed high-performance yarn supercapacitor based on PGPG/NCY electrodes is promising and widely applicable in wearable devices. Graphical Abstract
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
DOI
高影响因子
Materials
·
2024
·Vol. 17
·期 2
·417
·
IF 3.1
Yuehui Wang,Jun Huang,Ye Zhang,Shiwen Zhang,Lili Li,Xuan Pang
In this paper, an environmentally friendly polyacrylonitrile-based (PAN-based) composite membrane with a Janus structure for wastewater treatment was successfully fabricated. To achieve the optimum adsorption of PAN-based Janus composite membrane, the asymmetric wettability was regulated through electrospinning, resulting in TiO2modifying PAN as the hydrophilic substrate layer, and PCL gaining a different thickness as the hydrophobic layer. The prepared Janus composite membrane (PAN/TiO2-PCL20) showed excellent oil/water separation performance for diverse surfactant-stabilized oil-in-water emulsions. For n-hexane-in-water emulsion, the permeate flux and separation efficiency reached 1344 L m−2h−1and 99.52%, respectively. Even after 20 cycles of separation, it still had outstanding reusability and the separation efficiency remained above 99.15%. Meanwhile, the PAN/TiO2-PCL20 also exhibited an excellent photocatalytic activity, and the removal rate for RhB reached 93.2%. In addition, the research revealed that PAN/TiO2-PCL20 possessed good mechanical property and unidirectional water transfer capability. All results indicated that PAN/TiO2-PCL20 with photocatalysis and oil/water separation performance could be used for practical complex wastewater purification.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Wenji Zheng,Ziheng Li,Tianqi Sun,Xuehua Ruan,Yan Dai,Xiangcun Li,Chuling Zhang,Gaohong He
Metal organic frameworks (MOFs) based mixed matrix membrane (MMM) for CO 2 capture shows insufficient CO 2 permeability due to random disperse of MOFs in form of individual particle. Therefore, in this work, a continuous MOFs transport pathway for CO 2 with low resistance was constructed in the MMM by assistance of electrospun nanofiber . Specifically, PAN electrospun nanofiber mat (NFM) was utilized as skeleton to obtain continuous ZIF-8 nanofibers. Then flexible polyethylene glycol (PEG) molecules were photo-polymerized in situ into the inner-voids within ZIF-8@PAN NFM to form dense membrane . As a result, ZIF-8 particles are distributed in PEO matrix continuously, leading to a low-resistance transport pathway for gas molecules in MMM, which is proved by the cross-sectional SEM images. Furthermore, the higher Tg of ZIF-8@PAN-x/PEO MMM by DSC also indicates the good interfacial compatibility between ZIF-8 and PEO. Compared with pure PEO membrane, all the ZIF-8@PAN-x/PEO MMMs present both enhanced CO 2 permeability and CO 2 /N 2 selectivity. The enhanced CO 2 permeability is attributed to the continuous ZIF-8 transport pathway, and the improved selectivity is ascribed to the size screening from nanofibers overlapping and stacking and the tortuous transport pathway. Importantly, compared with ZIF-8/PEO MMM, in which ZIF-8 particles are randomly dispersed into PEO matrix, the ZIF-8@PAN-4/PEO MMM with the same ZIF-8 loading of about 16.6 wt% presents enhanced CO 2 permeability and CO 2 /N 2 selectivity, which are increased by 52.4% and 44.3%, respectively. This is due to the continuous ZIF-8 transport pathway and good interfacial compatibility, which is also confirmed by the result of gas diffusivity and solubility coefficients. Together with the outstanding mechanical strength and stability, the proposed MMM with continuous ZIF-8 transport pathway paves a new way to improve CO 2 permeability.
研究领域:
材料科学
·
环境工程
✓ 已验证
DOI
高影响因子
Carbon Energy
·
2026
·
IF 21.4
Haowei Shi,Fengjin Han,Binghao Chen,Qiaohong Peng,Hua Yuan
Sodium-sulfur (Na-S) batteries are promising next-generation energy storage systems due to their high theoretical energy density and low cost. Nevertheless, two critical challenges hinder their practical application: (1) safety risks arising from sodium dendrite growth, and (2) energy loss (via polysulfide shuttle effects and capacity fade) leading to rapid performance degradation. In this work, we address these issues with a composite gel polymer electrolyte (GPE), which is fabricated by integrating metal–organic framework–modified polyacrylonitrile (PAN) electrospun membranes with polyethylene oxide (PEO) denoted as PEO/PAN@ZIF-67 (PPZ). Pure PAN spun film with PEO is named PAN/PEO (PP). The resulting electrolyte exhibits an ionic conductivity of 4.2 × 10 −4 S cm −1 and an enhanced Na + transference number ( t Na + ${t}_{{\mathrm{Na}}^{+}}$ ) of 0.384. Symmetric Na cells demonstrate stable cycling for 400 h with a low overpotential of 130 mV. Moreover, we used sulfurized polyacrylonitrile (SPAN) as the cathode material. The SPAN/PPZ GPE/Na full cell retains a high reversible capacity of 691 mAh g −1 after 500 cycles at 1 A g −1 with minimal capacity decay. Both Na/PPZ GPE/Na and SPAN/PPZ GPE/Na configurations exhibit exceptional performance at 50°C, attributed to the dual functionality of the composite GPE: effective suppression of polysulfide shuttling and stabilization of the Na anode interface, thereby enhancing safety and cycling stability.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）