ADVANCED POWDER TECHNOLOGY
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2021
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IF 4.833
Siyu Lu,Shanlin Wang,Pian Wu,Danqi Wang,Jiecan Yi,Lei Li,Ping Ding,Hongzhi Pan
A high conductivity composite based on covalent organic frameworks/gold nanoparticles (TAPB-PDA-COFs/AuNPs, TAPB: 3,5-tris(4-aminophenyl)benzene, PDA: p-phthalaldehyde) was prepared by a simple in-situ synthesized method and a novel electrochemical sensor based on TAPB-PDA-COFs/AuNPs was constructed for detection of Enrofloxacin (ENR). A variety of different characterization techniques including ultraviolet‐visible spectrophotometer (UV–vis), fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) were used to characterize the TAPB-PDA-COFs/AuNPs. ENR was detected by square wave stripping voltammetry (SWV) according to the relationship between the ENR concentration and the oxidation peak current. The result showed that TAPB-PDA-COFs/AuNPs was synthesized successfully. The electrochemical sensor showed two linear ranges in the range of 0.05–10 μmol L −1 and 10–120 μmol L −1 with the limit of detection of 0.041 μmol L −1 (S/N = 3). The good recoveries (96.7–102.2%) and low RSDs (0.9–6.4%) indicated the possibility of using this sensor for actual sample detection. Therefore, TAPB-PDA-COFs/AuNPs-based electrochemical sensor showed good performance in detecting ENR, and would be a potential candidate for the development of fluoroquinolones determination.
研究领域:
分析化学
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纳米技术
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电化学
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药物分析
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DOI
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Wei Wang,Zixun Li,Peizheng Ni,Xiaoji Zhou,Yongfu Guo,Shusu Shen
Covalent triazine frameworks (CTFs), a subclass of covalent organic frameworks (COFs) based on triazine units, possess a high specific surface area and excellent optoelectronic properties, making them highly suitable for constructing photocatalytic nanocomposites. In this study, a high-performance photocatalytic self-cleaning membrane was developed by incorporating WS2 quantum dot-decorated CTF-A (WS2 QDS@CTF-A) into a polyvinylidene fluoride (PVDF) matrix. The composite membrane effectively synergized the excellent optoelectronic properties of CTF-A with the strong photocatalytic activity of WS2 QDs. Under simulated sunlight, the membrane efficiently generated •OH/•O2– radicals, which drove the degradation of adsorbed dye molecules, thereby endowing it with remarkable self-cleaning and antifouling properties. The optimized membrane (QL2) exhibited superior separation performance, achieving a pure water flux of 28.27 L·m–2·h–1·bar–1 and a rejection rate exceeding 99% for Eriochrome Black T. Notably, the photocatalytic functionality ensured excellent reusability, enabling the membrane to maintain over 90% separation efficiency throughout eight filtration cycles, which underscores its potential for sustainable wastewater treatment.
研究领域:
材料科学
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环境工程
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光催化
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膜技术
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纳米复合材料
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
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2026
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IF 8.8
Xinran Li,Chengbo Liu,Huimin Zhao,Bo Pang,Tianyu Liang,Xuemei Wu,Gaohong He,Fujun Cui
Covalent organic frameworks (COFs) possess highly ordered ionic conductive channels to compensate the challenges of polymer materials, are expected to address the critical issue of ion selective conduction in vanadium redox flow batteries (VRFBs). In this work, the amphoteric COFs nanofibers ion selective channel network is designed for the first time through the in-situ growth of the triazine COF and sulfonated COF from monomers contained electrospun blend nanofibers, and then densified by sulfonated polybenzimidazole (SPBI). The amphoteric COF nanofibers show notably higher diffusivity ratio of proton to vanadium ions compared to the individual nanofiber, demonstrating synergistical effect to construct high ion selective channel network, in which the triazine COF fiber repels vanadium ions via Donnan effect of the protonated nitrogen contained channels, and the sulfonated COF fiber facilitates rapid proton hopping along the acidic sulfonic acid groups contained fiber network. With amphoteric COFs nanofibers content of 55 vol%, the composite membrane exhibits low area resistance (0.17 Ω cm 2 ) and vanadium ions permeation (3.9 × 10 −9 cm 2 s −1 ) simultaneously, achieving an impressive battery energy efficiency of 85.1% at 200 mA cm −2 , outperforming that of the Nafion 212 (74.9%) and currently reported amphoteric ion conductive membranes for VRFBs. The amphoteric COFs composite membrane also shows stable operation over 1500 cycles (with periodic electrolyte refresh), exhibiting a discharge capacity decay rate of 0.25% per cycle (calculated over the first 100 cycles). This study provides an effective microstructure design for COFs materials to improve ion selectivity and flow batteries performance.
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高影响因子
DESALINATION
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2026
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IF 9.9
Yanzhou Tang,Guoqiang Zhong,Jun Zhang,Ruifeng Song,Hongbo Lv,Kaiwen Chen,Hongdan Wang,Rengui Weng,Xusheng Wang,Zhang Yan,Weiguang Li,Zhuwu Jiang,Chang He
Covalent organic frameworks (COFs) are attractive electrode candidates for capacitive deionization (CDI), but their practical use is often restricted by sluggish electron transport and the limited accessibility of redox-active units. In this work, electroactive β -ketoenamine COF domains were covalently integrated with amino-functionalized carbon nanotubes (CNTs), producing a conductive core–shell hybrid with intimate interfacial coupling. Benefiting from the thin COF shell, the conductive CNT backbone, and the chemically anchored interface, the optimized electrode achieves a salt adsorption capacity of 87.38 mg g −1 and maintains stable regeneration behavior, outperforming the pristine COF and CNT controls. Electrochemical measurements and density functional theory (DFT) calculations indicate that the covalent COF/CNT junction redistributes interfacial charge, improves electronic communication, and decreases the barrier for Na + migration. These results highlight covalent interfacial integration as an efficient route for activating redox COFs and developing high-performance metal-free CDI electrodes. Download: Download high-res image (372KB) Download: Download full-size image
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高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Yixian Lv,Baodong Tian,Yunwei Feng,Cuiqing Luo,Jiwei Wang,Zhangpei Chen,Jianshe Hu
The effective methods and materials for interception of iodine and the organic solvent forward osmosis (OSFO) are of great significance. In this study, we fabricated two types of hierarchically hydrazone-linked COFs interlayered membranes based on the allyl or propyl group modified monomer. The morphology and size of the initially fabricated powdery COFs could be modified and regulated by the ultrasonic dispersion process, generating a series of COFs colloidal solution. Through the in situ interfacial polymerization (IP) with active amines and acyl chloride, a series of stable COFs interlayered thin-film nanocomposite (TFN) membrane could be achieved, which significantly improves the OSFO performance and expands its application in interception of iodine. After optimization, the membrane exhibits high rejection rate and good solvent flux, making it a reliable method for efficient organic recovery from the mother liquor. Controlled experiments and theoretical investigations including molecular dynamics (MD) simulations and density functional theory (DFT) calculations demonstrated that the high rejection capacity and good solvent flux may be endowed by the allyl groups of TFDH-All, imparting the membranes with good abilities to combine solutes while not hindering the transmembrane transmission of solvent molecules.
研究领域:
材料科学
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化学工程
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膜技术
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分离科学
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环境科学
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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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
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化学工程
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Lei Huang,Rong Guo,Qingqing Qiu,Huan Li,Putrakumar Balla,Jinming Zeng,Tongxiang Liang,Xiaopeng Qi,Ping Liu
Electrochromic energy storage materials that possess both electrochromic and electrochemical energy-storage properties have attracted significant attention for applications in visual energy-storage, energy-efficient windows, as well as displays. To fulfill their comprehensive applications, electrochromic energy-storage materials require specific characteristics, such as transparency, ambipolarity, multi-color capabilities, and high capacitance. Here, the polyimide covalent-organic framework based on triarylamine (PM-TPI and NT-TPI) COF films were grown successfully on FTO glass through solvothermal polycondensation, and exhibited crystallization, hierarchical porous structures, and ambipolar electrochemical redox activity. Notably, NT-TPI COF film displayed transparent bleached state, ambipolar electrochromism, multi-color (transparent, orange-red, cyan, gray), and high optical contrast. Due to their large specific surface area and efficient electron/ion transport ability, the NT-TPI COF film effectively controlled visible and near-infrared light, achieving optical contrasts of 49.8 % and 70.0 % at 420 and 850 nm, respectively. Moreover, the NT-TPI COF films showed promising electrochemical energy-storage properties and excellent charge–discharge rate performance, with a specific capacitance of 141.0 mAh/g. Additionally, NT-TPI COF/WO 3 -based ambipolar eclectrochromic energy-storage devices also exhibited high optical contrast from visible to near-infrared regions, and large capacitance. In summary, the NT-TPI COF film effectively combines the electrochromic and electrochemical energy-storage capabilities, making it a promising candidate for electrochromic energy-storage materials with transparency, ambipolarity, high optical contrast, multi-color functionality, and high specific capacitance.
研究领域:
材料科学
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电化学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Xiaozhi Zhang,Tiantian Wang,Yi Wang,Yaojie Yan,Shenghua Xue,Shujuan Liu,Qian Ye,Feng Zhou,Weimin Liu
Recently, covalent organic frameworks (COFs) have been extensively studied due to their abundant active sites for functionalization and the derived various applications. Herein, we prepared poly(ionic liquid) functionalized COFs via mechanochemical reaction to bond with initiator and the following surface-initiated polymerization. Firstly, the initiator 2-bromo-2-methylpropionyl bromide bonded with the hydroxyl group of DT-COF through ball milling driven mechanochemical reaction, then the ionic liquid monomer (IL-Cl) can grow on COF skeleton from the active sites of initiator via surface-initiated atom transfer radical polymerization (SI-ATRP) to obtain the poly(ionic liquid) functionalized COF (PIL-Cl@DT-COF). The as-prepared PIL-Cl@DT-COF as well as the PIL-PF 6 @DT-COF sample after anion exchange with PF 6 − served as oil-based lubricant additives, significantly reducing the friction coefficient and wear volume of base oil PAO10, especially PIL-PF 6 @DT-COF can reduce the average friction coefficient from 0.169 to 0.094 and decrease the wear volume by 82.9 %. The outstanding tribological properties mainly benefited from the tough protective tribo-film, which was built via tribological reaction on the friction interface, containing the absorbed PIL-PF 6 @DT-COF, ferric oxides and anti-wear F, P compounds.
研究领域:
材料科学
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化学工程
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机械工程
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
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2022
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IF 9.136
Yaning Xu,Tiantian Wu,Ziwei Cui,Lixing Kang,Yahui Cai,Jianzhang Li,Dan Tian
The applied performance of covalent organic frameworks (COFs) is usually limited by their powder form and poor recyclability. In this work, natural balsa wood was employed as substrate for anchoring COFs nanoparticles. By in situ growth strategy, COFs was uniformly deposited on the microchannels of wood to construct Wood/COF composite with unique porous structure. The COFs grafted on the microchannels and porous structure of wood show excellent adsorption capacity in wastewater and oil-water separation. Moreover, the composite exhibited exceptional recyclability, stability and solvent resistance performance. Such wood-based composite is environmentally friendly and low cost, and we believe it has broad applications for practical wastewater treatment.
研究领域:
材料科学
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环境科学
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DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2026
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IF 6.1
Xiaoyuan Ma,Xi Ma,Muxi Zhang,Jinchi Han,Zhouping Wang
Background As one of the most common mycotoxins, Zearalenone (ZEN) not only contaminates cereal crops but also exists in processed grain products for its chemical stability. After entering human body through the food chain, ZEN exhibits remarkable bioaccumulation properties, which poses varying degrees of harmful effects to human health. The traditional chromatography instrumental methods require expensive equipment and complex experimental procedures. The aim of this manuscript is to develop a facile and accurate method for ZEN detection in food samples. Results Here, a SERS platform was developed for ZEN detection using COF and noble metal nanomaterial with nitroreductase (NTR)-like activity. First, magnetic COF loaded with gold nanoparticles (MCOF-Au) were synthesized as SERS enhancement substrates with partial NTR activity. Simultaneously, palladium-loaded dumbbell-shaped gold nanorods (AuNR/Pd) were prepared and served as the primary NTR in the 4-NTP/NaBH 4 system, significantly enhancing both catalytic activity and SERS signal. After nucleic acid functionalization, the two components assembled. The addition of ZEN regulated the assemble of AuNR/Pd on MCOF-Au. Following magnetic separation, the catalytic and SERS activities changed in the precipitate. Using the Raman peak of the output product 4-ATP at 390 cm −1 as the quantitative marker, the method showed a linear range in 0.001 μg/kg-1000 μg/kg. The LOD was calculated as 1.88 × 10 −4 μg/kg, and spiked recoveries in wheat flour and corn ranged from 88.91% to 115.78%, demonstrating high sensitivity and reliability for real-sample detection. Significance This aptasensor integrates the high sensitivity of Raman signals with the selectivity of aptamers, providing a robust and efficient tool for accurate ZEN detection in food. COF based nanocomposites are proved to have remarkable NTR activity and the catalytic product 4-ATP exhibits prominent Raman signal, making it suitable for quantitative detection. This design offers a versatile platform for food safety monitoring and public health protection.
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
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IF 9.9
Zhihao Su,Jionghao Huang,Runhao Wang,Yi Zhang,Lingxing Zeng,Yufei Zhang,Haosen Fan
Covalent organic frameworks (COFs) are regarded as the potential and promising anode materials for potassium ion batteries (PIBs) on account of their robust and porous crystalline structure. In this work, multilayer structural COF connected by double functional groups, including imine and amidogent through a simple solvothermal process, have been successfully synthesized. The multilayer structure of COF can provide fast charge transfer and combine the merits of imine (the restraint of irreversible dissolution) and amidogent (the supply of more active sites). It presents superior potassium storage performance, including the high reversible capacity of 229.5 mAh g −1 at 0.2 A g −1 and outstanding cycling stability of 106.1 mAh g −1 at the high current density of 5.0 A g −1 after 2000 cycles, which is superior to the individual COF. The structural advantages of the covalent organic framework linking by double functional groups ( d -COF) can develop a new road for that COF anode material for PIBs in further research.
研究领域:
材料科学
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电化学
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DOI
PubMed
高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 152
·期 12
·3725-3732
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IF 2.936
Guo Pan,Zhan Yuzhong,Yang Yanliang,Lu Tianliang
The preparation of high-performance supported Pd catalysts for the hydrogenation of aromatic nitro is of great importance. In this paper, covalent-triazine framework (CTF), an organic porous crystalline material connected by covalent bonds, was employed as the support for the preparation of Pd heterogeneous catalyst. The framework of CTF was maintained due to the utilization of cyclohexene as a moderate reductant for PdCl 2 . The catalysts were characterized by transmission electron microscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction, and X-ray photoelectron spectroscopy. The influence of reaction conditions (temperature, pressure, reaction time, concentration substrate and catalyst dosage) were investigated. At very mild reaction conditions (30 °C, 0.1 MPa H 2 , 2 mg Pd/CTF), the nitrobenzene was nearly stoichiometric hydrogenated to aniline. The Pd/CTF was effective for the conversion of a series of aromatic nitro compounds to the corresponding aromatic amines with good yield. The results showed that Pd/CTF has good catalytic activity and stability in the heterogeneous catalytic hydrogenation. Graphical Abstract
研究领域:
材料科学
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催化化学
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有机合成
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）