CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinxing Zhang,Zhiru Wang,Rui Ding,Lei Sun,Wenzhong Yang,Hui Xu
In this work, the metal–organic framework (MOF) particles (i.e., UiO-66-NH 2 ) was covalently modified with poly(4-vinylpyridine) (P4VP) through surface-initiated atom transfer radical polymerization (SI-ATRP) method. The hair MOF product, referred to as UiO-66- g -P4VP, was then subjected to quaternization with 1-bromoethane, resulting in UiO-66-g- q P4VP (quaternized P4VP is denoted as q P4VP). Finally, these UiO-66-g- q P4VP particles were incorporated into a polymer matrix made of polyacrylonitrile (PAN) to develop a nanofibrous composite membrane using the electrospinning technique. After modification of quaternized P4VP, the surface of the MOFs carry strong positive charges. Therefore, the electrospun UiO-66- g - q P4VP/PAN nanofiber membrane can serve as an adsorbent in efficient removal of negatively charged arsenate through strong electrostatic interactions. The adsorptive efficacy of the nanofiber membrane exhibited considerable stability within the pH spectrum extending from 4 to 10, indicating that the membrane could potentially maintain its functionality across a broad range of pH conditions. Our developed approach opens up an avenue for manufacturing of polyelectrolyte-functionalized MOF nanofiber membranes, which hold great promise for application in water remediation.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2023
·
IF 4.8
Ben Niu,Zhenyu Zhai,Shuyan Yu,Tong Li,Jiaona Wang,Yan Zhou,Congju Li
A copper-based metal–organic framework (MOF-199) demonstrates excellent performance and considerable potential in the gas detection of volatile organic compounds (VOCs). However, the powder of MOF-199 seriously limits its application in the fabrication of flexible devices. Herein, we introduce a simple method of blending electrospinning, combining MOF-199 with polyacrylonitrile (PAN) nanofiber to form a MOF-199/PAN nanofiber membrane with the flexibility of PAN nanofiber and the functionality of MOF-199. The capacitive sensor comprising MOF-199/PAN nanofiber membrane and carbon nanotubes exhibits good flexibility, high porosity, and sufficient adsorption active sites. The sensor has the highest response to methanol among seven target VOCs. It exhibits outstanding sensitivity, long-term stability, good linear response, and repeatability toward methanol (250–1250 ppm). Owing to the flexibility of the MOF-199/PAN nanofiber membrane, the sensor maintains a stable sensing response after repeated bending at 180˚–0˚ 50 times and exhibits a certain degree of response in the 180˚ bending state. The results show that the sensor has flexibility potential. These provides some ideas and reference for the development of VOCs sensors.
研究领域:
材料科学
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化学传感
·
环境监测
✓ 已验证
产品关联
DOI
高影响因子
OPTICS EXPRESS
·
2024
·Vol. 32
·期 11
·20024-20034
·
IF 3.2
Jinze Li,Xin Liu,Hao Sun,Jiawei Xi,Chen Chang,Li Deng,Yanxin Yang,Xiang Li
An optical fiber sensing probe using a composite sensitive film of polyacrylonitrile (PAN) nanofiber membrane and gold nanomembrane is presented for the detection of a carcinoembryonic antigen (CEA), a biomarker associated with colorectal cancer and other diseases. The probe is based on a tilted fiber Bragg grating (TFBG) with a surface plasmon resonance (SPR) gold nanomembrane and a functionalized polyacrylonitrile (PAN) PAN nanofiber coating that selectively binds to CEA molecules. The performance of the probe is evaluated by measuring the spectral shift of the TFBG resonances as a function of CEA concentration in buffer. The probe exhibits a sensitivity of 0.46 dB/(µg/ml), a low limit of detection of 505.4 ng/mL in buffer, and a good selectivity and reproducibility. The proposed probe offers a simple, cost-effective, and a novel method for CEA detection that can be potentially applied for clinical diagnosis and monitoring of CEA-related diseases.
研究领域:
生物医学工程
·
癌症诊断
·
光学传感
✓ 已验证
DOI
高影响因子
Polymers
·
2018
·Vol. 10
·期 8
·853
·
IF 2.935
Yongguang Zhang,Zhumabay Bakenov,Taizhe Tan,Jin Huang
A gel polymer electrolyte was formed by trapping an optimized Na+/Zn2+mixed-ion aqueous electrolyte in a polyacrylonitrile nanofiber polymer matrix. This electrolyte was used in a novel aqueous sodium-ion battery (ASIB) system, which was assembled by using a zinc anode and Na4Mn9O18cathode. The nanorod-like Na4Mn9O18was synthesized by a hydrothermal soft chemical reaction. The structural and morphological measurement confirmed that the highly crystalline Na4Mn9O18nanorods are uniformly distributed. Electrochemical tests of Na4Mn9O18//Zn gel polymer battery demonstrated its high cycle stability along with a good rate of performance. The battery delivers an initial discharge capacity of 96 mAh g−1, and 64 mAh g−1after 200 cycles at a high cycling rate of 1 C. Our results demonstrate that the Na4Mn9O18//Zn gel polymer battery is a promising and safe high-performance battery.Keywords:aqueous sodium-ion battery;cathode;gel polymer electrolyte;Na4Mn9O18nanorod;polyacrylonitrile nanofiber
研究领域:
材料科学
·
电化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Chen Liu,Yutang Kang,Yuanyuan Rao,Shasha Feng,Feng Zhang,Zhaoxiang Zhong,Weihong Xing
In this study, a polyacrylonitrile (PAN) nanofibrous membrane demonstrating both high particulate matter filtration efficiency and formaldehyde visual detection capabilities was obtained by electrospinning. The additive polyvinylpyrrolidone (PVP) was introduced to adjust the structural characteristics and hydrophilicity of the membrane, while methyl yellow (MY) was added as a colorimetric indicator. Sulfamic acid was then loaded on the membrane to obtain the sensing property. The obtained nanofibrous membrane exhibits excellent PM0.3 filtration efficiency (99.88%) with low filtration pressure drop (159.3 Pa). The sensing accuracy for formaldehyde can reach below 50 ppb (World Health Organization, safety concentration <80 ppb), and it can identify formaldehyde at a concentration of 1 ppm within 10 min. Owing to the specific reaction between sulfamic acid and formaldehyde, the membrane exhibited excellent anti-interference performance against other volatile organic compounds. This nanofiber colorimetric sensing membrane holds great potential for application in respiratory protective equipment.
研究领域:
材料科学
·
环境健康
·
呼吸防护
·
纳米技术
·
分析化学
·
功能材料
✓ 已验证
产品关联
DOI
高影响因子
ACS Nano
·
2015
·
IF 12.881
Jiaojie He,Wei Wang,Fenglian Sun,Wenxin Shi,Dianpeng Qi,Ke Wang,Ruisha Shi,Fuyi Cui,Ce Wang,Xiaodong Chen
La(OH)3 nanorods immobilized in polyacrylonitrile (PAN) nanofibers (PLNFs) were fabricated for the first time by electrospinning and a subsequent in situ surfactant-free precipitation method and then applied as a highly efficient phosphate scavenger to realize nutrient-starvation antibacteria for drinking water security. The immobilization by PAN nanofibers effectively facilitated the in situ formation of the aeolotropic and well-dispersed La(OH)3 nanostructures and, thus, rendered higher phosphate removal efficiency due to more exposed active sites for binding phosphate. The maximum phosphate capture capacity of La(OH)3 nanorods in PAN nanofibers was around 8 times that of the La(OH)3 nanocrystal fabricated by precipitation without PAN protection. Moreover, remarkably fast adsorption kinetics and high removal rate were observed toward low concentration phosphate due to the high activity of our materials, which can result in a stringent phosphate-deficient condition to kill microorganisms in water effectively. The present material is also capable of preventing sanitized water from recontamination by bacteria and keeping water biologically stable for drinking. Impressively, stabilized by PAN nanofibers, the La(OH)3 nanorods can be easily separated out after reactions and avoid leaking into water. The present development has great potential as a promising antimicrobial solution for practical drinking water security and treatment with a negligible environmental footprint.
研究领域:
环境科学
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材料科学
·
生物学
✓ 已验证
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Shun Hu,Zhen Ge,Jie Tan,Haoran Lai,Tingting Feng,Shu Zhang,Ziqiang Xu,Haiping Zhou,Xiuhua Cao,Guisheng Zhu,Mengqiang Wu
Designing cathode and anode materials that can accommodate capacity and rate performance is a significant challenge in developing lithium-ion capacitors (LICs). Herein, we synthesize a unique N/S dual-doped hierarchical porous carbon (NSC) under the effect of pore distribution modification and heteroatom doping. The nanosheet shape and pore distribution of NSC are highly adjustable, while it demonstrates a reversible capacity that is tens of times more than that of unaltered pristine active carbon. Meanwhile, the prepared glycerol-engineered polyacrylonitrile nanofiber (GPN) form a fast conducting network in the presence of glycerol and carbon nanotubes (CNTs) and exhibit a 300% higher capacity compared to pure polyacrylonitrile nanofibers at 5 A g −1 . On this premise, the constructed highly stable LIC (NSC//GPN x @CNTs) can achieve an energy density of 131.48 Wh kg −1 and have an excellent capacity retention rate (93.5%) over 10,000 cycles at a high current density (5 A g −1 ). This work may lead to new avenues for the preparation of heteroatom-doped porous carbon and redefine the electrode matching of highly stable LICs.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
Nano Energy
·
2023
·
IF 17.6
Chao Zhao,Jinyun Xu,Junzhu Tao,Changfa Xiao,Xin Jin,Wenyu Wang,Xing Liu,Jie Chen,Zhengtao Zhu
Self-charging supercapacitor (SCSPC) is an integrated device that can convert mechanical energy into electrical energy and store it to power microelectronics without need a rectifier for DC conversion. Here, we report a multi-alignment design idea for polyacrylonitrile (PAN) piezoelectric nanofiber instead of traditional polyvinylidene fluoride (PVDF) as a separator in SCSPCs, which greatly improves device self-charging performance and index. The combination of synergistic effect of polarization and the stretching process in electrospinning technology can achieve PAN nanofibers orderly arrangement at macroscopic level and alignment of conformation and cyano groups at microstructural level, resulting in excellent hydrophilicity (contact angle 0 °), high piezoelectric property (3.80 μW at a load resistance of 1 MΩ), high mechanical property (7.77 MPa), and outstanding cycling stability (unchanged after 22,000 cycles). As a result, the SCSPCs based on PAN piezoelectric separator has a high conversion efficiency of 12.53%, an energy density of 37.60 mJ cm −2 at power density of 1.01 mW cm −2 , and a capacitance retention 91.7% after 5000 compressive cycles. The SCSPC@PAN with working area of 4 × 4 cm 2 was attached on elbow, shoes, and bicycle tire to collect biomechanical energy and covert mechanical energy into electrical energy and store. Two SCSPC@PAN in series attached on one shoe can light 3.0 V LEDs after working for 40 min. This multi-scale alignment design idea and understanding the relationship between structure of PAN piezoelectric membrane and properties of SCSPC@PAN would provide important basis for design advanced piezoelectric separator for SCSPCs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2023
·
IF 8
Yaqin Wang,Congrui Bai,He Shi,Yingying Xu,Xiaoming Wang,Zhaoyang Fan,Huan Jiao
Carbon nanotube yarn is a potential substance for the fabrication of fiber-shaped energy storage devices owing to its lightweight, stiffness, and excellent electrical properties. However, it has a compact structure with a limited pore volume , leading to insufficient active material loading and inadequate gel electrolyte penetration. These seriously restrict its application in fiber-shaped energy storage devices made entirely of solid-state components. Herein, glycerol-functionalized polyacrylonitrile nanofibers (GPN) are electro-spun and collected on Ti wire. And they are chosen as hydrophilic support to load carboxylic multiwalled carbon nanotubes (CMWCNTs) via dip-coating. After oxidation , a 3D rolled O-CMWCNTs@GPN/Ti aerogel fiber-shaped structure with macroscopic thickness and excellent stability in water is fabricated. The O-CMWCNTs@GPN/Ti structure has a high length-specific capacitance value of 15.2 mF cm −1 itself. It also can be used as a current collector to load pseudocapacitive materials to improve capacity. With polyaniline (PANI) electrodeposited in this structure, the as-prepared hybrid aerogel electrode PANI@O-CMWCNTs@GPN/Ti displays a high specific capacitance of 52.6 mF cm −1 in a fiber-shaped supercapacitor device. All features suggest that O-CMWCNTs@GPN/Ti aerogel is an excellent candidate for flexible fiber-shaped energy storage devices.
研究领域:
材料科学
·
能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2022
·
IF 10.53
Wenyan Li,Yumei Li,Xinggui Wen,Yakun Teng,Jing Wang,Tianyi Yang,Xiang Li,Lijuan Li,Ce Wang
High-performance and low-cost hemodialysis membranes are urgently needed by patients suffering from end-stage renal disease. Here, we designed a flexible multifunctional Zr-MOF anchored polyacrylonitrile (PAN) nanofiber membrane (UAPNFM), which has good adsorption, dialysis, and regeneration ability. A novel adhesive layer modification method was used to make UIO-66-(COOH) 2 nanocrystals grow in-situ on the composite nanofibers . The UIO-66-(COOH) 2 nanocrystals were uniformly and stably anchored on the nanofibers with the content of 54.99 wt%. The obtained UAPNFM has the capability to effectively remove uremic toxins with excellent retain protein rate. The Langmuir isotherm and pseudo-second-order kinetic model can be applied to better describe the adsorption process . The maximum adsorption capacity of UAPNFM for creatinine reached 168.63 mg/g. After 4 h of simulate dialysis, the clearance rate of creatinine was 82.48% and the protein retention rate of bovine serum albumin (BSA) by the UAPNFM was 93.09%. In addition, after four cycles, the removal efficiency for creatinine still remained at 82.31%. The results show that the UAPNFM has good regenerability. Moreover, the composite nanofiber membrane exhibited satisfactory blood compatibility. Therefore, this unique flexible Zr-MOF anchored polymer composite nanofiber membrane with an outstanding creatinine removal performance provides a new opportunity for cost reduction for clinical hemodialysis.
研究领域:
生物医学工程
·
材料科学
·
肾脏病学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xuan Su,Jingjing Hui,Yusong Zhou,Wen-Bo Cheng,Xiwen He,Langxing Chen,Yukui Zhang
The accurate detection of benzoylurea insecticides (BUs) residues is vital for the environment and human health. In this work, a room-temperature synthesis strategy was developed to fabricate the covalent organic framework (COF)–polyacrylonitrile (PAN) nanofibers composite by an electrospinning technique. The COF was functionalized on PAN nanofibers via in situ polymerization of 1,3,5-tris(4-aminophenyl)triazine (TAPT) and 2,3,5,6-tetrafluoroterephthaldehyde (TFTA). The obtained TAPT-TFTA@PAN nanofibers showed a porous structure, high surface area, good crystallinity and excellent extraction efficiency to BUs. A sensitive method combining dispersive solid-phase extraction (DSPE) using TAPT-TFTA@PAN nanofibers as an adsorbent with liquid chromatography–ultraviolet detector was developed for trace analysis of four BUs in environment water samples. This method achieved a wide linear range of 0.5–200 ng·mL −1 for triflumuron and hexaflumuron, and of 0.5–150 ng·mL −1 for teflubenzuron and fluazuron. The limits of detection (S/N = 3) for four BUs ranged from 0.11 to 0.42 ng·mL −1 . The accuracy of the proposed method was validated by measuring trace BUs in the spiked water samples with recoveries in the range of 98.3 %∼125.3 %. The results demonstrated that the TAPT-TFTA@PAN nanofibers have great potential as an extractant for effective enrichment of benzoylurea insecticide from complex water samples.
研究领域:
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2021
·
IF 8.742
Chao Han,Qin Liu,Qing Xia,Yan Wang
Membranes with high permeance, excellent selectivity coupled with adequate solvent resistance are required for organic solvent nanofiltration (OSN) applications. But the “trade-off” relationship between the solvent resistance and permeance remains a critical challenge for polymeric-based thin film composite (TFC) membranes with necessary chemical crosslinking. Herein, a novel facile cyclization modification of polyacrylonitrile (PAN) nanofiber substrate is proposed by a simply thermal treatment and subsequent alkaline hydrolysis, and employed for the fabrication of TFC-OSN membrane for the first time in strong polar aprotic solvent systems. The reaction mechanism involved, solvent resistance and pore structure of PAN nanofiber substrate brought by the modification are investigated. TFC-OSN membrane supported by the modified PAN nanofiber substrate exhibits ultrahigh solvent permeance up to 13.3 L m −2 h −1 bar −1 coupled with a 99.7% rejection in rose bengal/DMF system and a good long-term stability. This study is therefore believed to provide useful guidelines for the development of next-generation OSN membranes.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 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）