JOURNAL OF APPLIED POLYMER SCIENCE
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2025
·
IF 2.8
Kexin Chen,Yan Zhang,Zhibin Jin,Yinchun Hu,Qi Lei,Yongcun Li,Qiong Zhou,Yingying Wang
Aramid fiber (AF)-reinforced composites face significant limitations in applications such as deep-sea equipment and aerospace due to their poor interfacial compatibility and low bonding strength. This study presents an innovative and scalable strategy for constructing a nano-hierarchical reinforcement interface on AF to fundamentally address this issue. A multifunctional interlayer was first constructed using polyethyleneimine (PEI) and polydopamine (PDA), on which both carboxylated and aminated carbon nanotubes (COOH-CNTs and NH 2 -CNTs) were co-anchored to produce the final product, denoted as C/N-CNTs-PP-AF. The distinctive dual-CNT configuration produced a stable electrical resistance in the range of 51.57–84.20 MΩ by forming a continuous conductive network. More importantly, C/N-CNTs-PP-AF/unsaturated polyester (UP) composites exhibited significant enhancement in properties, which corresponded to an interfacial strength of 39.60 MPa (an 81.15% increase) and tensile strength of 1404.25 MPa (an 89.45% improvement). The approach leverages multifaceted interfacial interactions to enable stable CNT grafting and enhanced adhesion. This work not only effectively addresses weak bonding at the AF/UP interface but also establishes a new paradigm for the design of high-performance fiber-reinforced composites with integrated functionalities.
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DOI
高影响因子
TALANTA
·
2025
·
IF 6.1
Luyang Zhao,Yang Song,Guoyang Xie,Hengyi Xu
A colorimetric assay based on the Fe/Al bimetallic organic framework NH 2 -MIL-53(Fe, Al) was developed for the sensitive detection of Escherichia coli O157:H7 ( E. coli O157:H7), a critical pathogen threatening food safety. The framework’s high specific surface area facilitated efficient antibody immobilization, whereas the incorporation of Al 3+ enhanced electron transfer between Fe 2+ /Fe 3+ , thereby significantly boosting peroxidase activity. The optimized NH 2 -MIL-53(Fe, Al) exhibited 1.4-fold and 4.9-fold higher relative absorbance than NH 2 -MIL-53(Fe) and NH 2 -MIL-53(Al), respectively. And it demonstrated 40-fold and 2-fold greater affinity for TMB and H 2 O 2 , respectively, compared to the natural enzyme. By integrating a dual-recognition system based on antibody and aptamer, the method enabled rapid detection with a limit of detection of 10 1 CFU/mL in colorimetric mode. Its successful application in complex matrices, including lettuce, juice, pool water, and chocolate milk, had yielded satisfactory recovery and precision, confirming its promising potential for food safety monitoring.
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PubMed
高影响因子
Nanoscale
·
2025
·
IF 5.1
Jin Wang,Tianlong Zhou,Jie Zou,Jianhang Hai,Yunqing Lu
Triboelectric nanogenerators (TENGs) have emerged as a promising technology to harvest energy from the environment due to their self-powered characteristics, simple structure, low cost and high flexibility. To improve their performance, this work proposes a hierarchical optimization strategy, which integrates the employment of polyimide (PI) matrix, the doping of metal-organic framework and the surface patterning of TENG triboelectric layers to achieve high output performance and durability. In the work, the PI/UIO-66-NH₂ mixed matrix membrane (MMM) is first synthesized and characterized, where the influence of UIO-66-NH₂ loading amount on the triboelectric properties of MMM is analyzed. The measurement results show that this MMM exhibits excellent dielectric properties and thermal stability. Subsequently, the TENG device operated in the vertical contact-separation mode is fabricated, where MMM is used as the negative triboelectric layer and pure PI membrane as the positive layer. Moreover, the surface patterning method based on soft imprint lithography is applied to both triboelectric layers to augment their effective contact areas. Then, the output performance of TENG is characterized. It is found that, for the weight ratio of UIO-66-NH₂ of 5 wt%, the patterned UIO-66-NH₂ MMM-based TENG (P-TENG-5) achieves a maximum output power density of 78.27 ± 3.42 μW/cm², which is 5.76 times higher than that of unpatterned TENG-5 and 361.35 times greater than that of pure PI-based TENG-0. Remarkably, P-TENG-5 maintained stable performance over 20,000 cycles at 2 Hz without the considerable performance degradation.
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PubMed
高影响因子
CHEMICAL PHYSICS LETTERS
·
2025
·
IF 3.1
Kangyue Qiao,Songyao Du,Yue Wang,Tongxin Xiao,Guodong Hao,Chao Sui,Yihan Yan
To address the severe Cr(VI) contamination in industrial wastewater, an NH 2 -MIL-101(Fe)/g-C 3 N 4 type-II heterojunction photocatalyst was synthesized via a solvothermal one-pot method. Structural characterization using XRD, SEM, XPS, and BET confirmed successful composite formation with high specific surface area and favorable interfacial contact. Photocatalytic experiments revealed that under conditions of pH = 2, a catalyst dosage of 20 mg, and an initial concentration of 10 mg/L, NM-101(Fe)/0.2CN achieved a 99.5 % reduction efficiency within 80 min. Its reaction rate constant was 3.6 times higher than that of NM-101(Fe) used alone. This study provides new insights for developing highly efficient MOF/polymer composite photocatalysts.
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高影响因子
Chemosensors
·
2026
·Vol. 14
·期 11
·243
·
IF 4.4
Jiahua Su,Wei Qu,Chengjun Qiu,Yuan Zhuang,Yi Qu,Muzhi Li,Huili Hao,Zizi Zhao
1-Aminopyrene, as a transformation product of the priority pollutant 1-nitropyrene, has raised increasing concerns due to its carcinogenic, mutagenic, and bioaccumulative properties in marine environments. A rapid and sensitive method for trace 1-aminopyrene detection in seawater is essential for marine environmental monitoring and public health protection. In this paper, a novel electrochemical immunosensor was fabricated based on an NH2-functionalized multi-walled carbon nanotubes-chitosan (NH2-MWCNTs/CS) nanocomposite film loaded with anti-1-aminopyrene antibody on a glassy carbon electrode. The NH2-MWCNTs/CS composite served as a conductive and biocompatible matrix that facilitated interfacial electron transfer and provided a suitable surface for adsorption-based antibody immobilization. Potassium ferricyanide was employed as an electrochemical probe to generate voltammetric signals, and the immune response was investigated by differential pulse voltammetry. Under optimized experimental conditions, the peak current change was inversely proportional to the 1-aminopyrene concentration in the range of 0.5 ng·mL−1to 110 ng·mL−1, with a detection limit of 0.36 ng·mL−1. The immunosensor demonstrated good selectivity, stability, and anti-interference capability in complex sample matrices. It was successfully applied to the determination of 1-aminopyrene in real seawater samples, with recovery rates ranging from 97.53% to 99.30% and relative standard deviations below 0.92%. The results indicate that the proposed immunosensor offers a simple, cost-effective, and environmentally friendly alternative to conventional chromatographic methods, and holds great potential for on-site monitoring of trace PAH metabolites in marine environments.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2022
·
IF 9.136
Qingping Xin,Shuo Li,Faxin Ma,Jianping Guo,Shaofei Wang,Guangyu Xuan,Xiaoli Ding,Lei Zhang,Yuzhong Zhang
The preparation of mixed matrix membranes (MMMs) using metal–organic framework (MOF) as fillers is one of the simple and effective methods to improve the gas permeability and selectivity of membranes, and it has an attractive prospect to achieve controllable gas separation process. Herein, NH 2 -MIL-53 nanoparticles are synthesized by hydrothermal method and modified by aminoazobenzene (Azo) by decompression loading technology. The multifunctional Azo@NH 2 -MIL-53 nanoparticles are incorporated into the Pebax matrix to fabricate MMMs for efficient and controllable SO 2 separation. Pebax/Azo@NH 2 -MIL-53–20% membrane exhibits the maximum SO 2 permeability of 2570 Barrer with a SO 2 /N 2 selectivity of 717 and the separation process of SO 2 /N 2 has dynamic photo-responsive characteristics under different light conditions, which is attributed to the incorporation of the Azo@NH 2 -MIL-53. First, the NH 2 -MIL-53 nanoparticles with high specific surface area of 637 m 2 .g −1 and pore size of 1.50 nm are introduced into MMMs to construct rich SO 2 transport channels, increasing the diffusivity selectivity. Second, the inherent –NH 2 groups and introduced -N = N- groups in Azo@NH 2 -MIL-53 increase the affinity of SO 2 , enhancing the solubility selectivity. Third, by artificially changing the light conditions to accurately control the conformation of Azo and the pore structure of NH 2 -MIL-53 is changed, which significantly changes the SO 2 adsorption capacity of NH 2 -MIL-53. Due to light is available in abundance in the form of sunlight, the mixed matrix membrane coupled with photo-responsive MOF can achieve more efficient and energy-saving gas separation process.
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CHINESE JOURNAL OF CHEMICAL PHYSICS
·
2020
·Vol. 33
·期 4
·394-400
·
IF 1.067
Liu Jia,Jiang Shen-long,Zhang Qun
We constructed two types of copper-doped metal-organic framework (MOF), i.e ., Cu@UiO- 66-NH 2 and Cu-UiO-66-NH 2 . In the
former, Cu 2+ ions are impregnated in the pore space of the
amine-functionalized, Zr-based UiO-66-NH 2 ; while in the latter, Cu 2+ ions are in-corporated to form a bimetal-center MOF, with Zr 4+ being partially
replaced by Cu 2+ in the Zr−O oxo-clusters. Ultrafast spectroscopy revealed that
the photoinduced relaxation kinetics associated with the ligand-to-cluster charge-transfer
state is promoted for both Cu-doped MOFs relative to undoped one, but in a sequence of
Cu-UiO-66-NH 2 >Cu@UiO-66-NH 2 >UiO-66-NH 2 . Such a
sequence turned to be in line with the trend observed in the visible-light photocatalytic
hydrogen evolution activity tests on the three MOFs. These findings highlighted the subtle
effect of copper-doping location in this Zr-based MOF system, further suggesting that
rational engineering of the specific metal-doping location in alike MOF systems to promote
the photoinduced charge separation and hence suppress the detrimental charge recombination
therein is beneficial for achieving improved performances in MOF-based photocatalysis.
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JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
·
2020
·Vol. 20
·期 3
·1807-1813
·
IF 1.134
Wang Yulin,Qiu Xiuzhen,Li Yangyang,Guo Huishi,Lu Wenguan,Nie Libo
A novel molecularly imprinted polymer material based on the metal-organic framework NH2-MIL-101(Cr) (MOF-MIP) was prepared. The synthesized MOF-MIP was characterized by IR, XRD, SEM and N2 absorption. The characterization results displayed that the MOF-MIP which exhibited
an octahedral shape had good dispersibility, good thermal stability and a high surface area. Subsequently, the adsorption behavior of MOF-MIP to diclofenac sodium (DS) in aqueous solution was examined. A series of adsorption experiments demonstrated that the MOF-MIP had high transfer mass
rates and high sensitivity and selectivity for DS. Then the MOF-MIP was used as the adsorbent of dispersive micro-solid phase extraction (DMSPE) for the detection of DS in urine. Under optimum conditions, the average recovery of DS ranged from 88.3 to 101.6% with RSD of 5.6%. The described
method provides a rapid route for determination of DS in human urine.
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高影响因子
Catalysis Science & Technology
·
2019
·Vol. 10
·期 1
·138-146
·
IF 5.726
Ting Wang,Xueqin Tao,Yi Xiao,Ganhua Qiu,Yun Yang,Benxia Li
While heterogeneous photocatalysis is regarded as a sustainable strategy to achieve organic reactions for the production of high-value-added organics, photocatalytic efficiency is generally limited by poor charge separation, dull surface catalytic activity and the consequently caused insufficient generation of active species. Herein, the hybrid structures of metal–organic frameworks (MOFs) incorporated with Pd ultrasmall nanocrystals are synthesized, and their photocatalytic performance is evaluated by the oxidative coupling of benzylamine as a model reaction. The photocatalytic activity of the Pd/MIL-125-NH2 hybrid material with an optimal Pd loading is greatly superior to that of the pristine MIL-125-NH2, achieving a high benzylamine conversion rate of 3136 μmol h−1 gcat−1 at 94.08% conversion. The enhanced charge transfer and separation in Pd/MIL-125-NH2 are verified by photoluminescence spectroscopy and photoelectrochemical experiments. Photogenerated reactive oxygen species are probed by 3,3′,5,5′-tetramethylbenzidine (TMB) as an indicator and the reactive intermediates in the photocatalytic systems are identified by in situ ESR detection. The results confirm that the optimized Pd/MIL-125-NH2 hybrid catalyst possesses higher ability for molecule activation and that both superoxide radical (˙O2−) and singlet oxygen (1O2) are the dominant oxidative species in the present photocatalytic system. Therefore, the dual advantages of Pd/MIL-125-NH2 hybrid structures for promoting the photogenerated charge transfer/separation and providing highly catalytic sites for molecule activation contribute to higher photocatalytic activity.
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高影响因子
MACROMOLECULAR RESEARCH
·
2022
·Vol. 30
·期 10
·719-730
·
IF 2.127
Zhang Xing,He Juan,Wang Huige,Xu Pengfei,Wang Mingyu,Li Yuanyuan,Chen Jing,He Lijun
In this study, surface molecularly imprinted polymers were synthesized with the metal-organic framework NH 2 -MIL-53 as carrier and naringenin as alternative template of Ochratoxin A (OTA). The amino groups on the surface of NH 2 -MIL-53 reacted with the epoxy groups in glycidyl methacrylate (GMA). Subsequently, the double bonds of the GMA grafting on the surface of the material were used for polymerization to prepare the surface molecularly imprinted polymers. The obtained polymers were characterized by scanning electron microscope, transmission electron microscope, energy spectrometer, Fourier infrared spectrometer, X-ray diffraction, and laser particle size analyzer. Synthetic polymer was combined with solid phase extraction for separation and enrichment of trace OTA in grains. The spiked recoveries were found to be 78.95–106.45%, with relative standard deviations ranging from 5.16% to 6.31%. The detection limit and the quantification limit of the method were 0.04 µg·kg −1 and 0.12 µg·kg −1 , respectively. Comparing the pretreatment effects of the self-made cartridge and the immunoaffinity column on the OTA in the sample, it showed that the self-made column had excellent performance and provided a new pretreatment method for the treatment of OTA in grains.
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JOURNAL OF MEMBRANE SCIENCE
·
2019
·
IF 7.015
Atian Xie,Jiuyun Cui,Jin Yang,Yangyang Chen,Jihui Lang,Chunxiang Li,Yongsheng Yan,Jiangdong Dai
Membrane fouling is one of the major blockages toward the further sustained development of membrane technology . In this work, PVDF/NH 2 -MIL-88B(Fe) (PVDF/NM88B) membranes were prepared for the first time via one-step simple non-solvent induced phase conversion method. The PVDF/NM88B membrane shows an excellent separation performance (above 99.4%) and permeation flux (340–1970 L m −2 h −1 bar −1 ) towards different oil/water emulsions. Moreover, PVDF/NM88B membrane exhibits excellent antifouling performance with flux recovery ratio of almost 100% attributing to hydrophilicity and high photo-Fenton activity of NM88B. In addition, the membrane with good mechanical properties and recyclability shows great application potential in wastewater treatment . This work may shine a new light on the promising photo-Fenton self-cleaning prospect of Fe-based MOFs in constructing antifouling membranes for wastewater remediation and potential applications.
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高影响因子
JOURNAL OF MATERIALS SCIENCE
·
2020
·Vol. 55
·期 34
·16171-16183
·
IF 3.553
Liu Shengjun,Zou Qichao,Ma Yan,Sun Wen,Li Yu,Zhang Jian,Zhang Cheng,He Lifang,Sun Yudie,Chen Qian,Liu Bo,Zhang Hexin,Zhang Kui
Metal–organic frameworks (MOFs) are a new type of porous crystal materials that have been widely used in various fields. Owing to their adjustable porous structure, MOF photocatalysts with high catalytic activity have become a research hotspot. In this study, NH 2 -MIL-125/CoS x samples were investigated as a novel visible light-responsive catalyst for the removal of organic dye. The NH 2 -MIL-125/CoS x -20 composites showed the best photodegradation efficiency, where photodegradation of the rhodamine B reached 95.4% in 45 min. CoS x was able to effectively extend the wavelength absorption range of NH 2 -MIL-125 and effectively separate the photogenerated electrons and holes and that could lead to the improved photocatalytic performance of the composites. The reactive superoxide radical ( · O 2− ) was identified as the main active species using reactive species capture experiments, and a reasonable photocatalytic mechanism was proposed. This paper is intended to guide the development of organic–inorganic hybrid materials for environmental remediation.
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高影响因子
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