COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
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2025
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IF 8.9
Qingguang Bao,Danhui Wang,Xuemei Yan,Ning Wang,Shan Cheng,Qingfeng Sun,Nan Li,Xigao Jian
In this paper, a soluble polyphthalazine biphenyl ether nitrile containing carboxyl and sulfonic acid groups (SPPBEN-COOH) was synthesized, and a water-soluble sizing agent was prepared to enhance the interface performance and wear resistance of SCF/PPEK composites. SPPBEN-COOH has excellent thermal properties (T g = 244 °C) and good solubility. Compared with UCF/PPEK composites, the wear resistance of the modified composites increased by 52.8 %. In addition, molecular dynamics simulation was utilized to calculate the chemical compatibility between the sizing agent and the resin. Meanwhile, the impact of the sizing agent on the interfacial bonding strength of the composite was investigated. This study not only offers an environmentally friendly approach for enhancing the interfacial and tribological properties of SCF/PPEK composites, but also provides valuable insights for the design of high-performance thermoplastic composites. Additionally, it contributes to a scientific understanding of the microscopic mechanisms involved in interfacial enhancement.
研究领域:
材料科学
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聚合物复合材料
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表面工程
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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
BIOSENSORS & BIOELECTRONICS
·
2018
·
IF 8.173
Xing-Pei Liu,Jing-Shuai Chen,Chang-jie Mao,He-Lin Niu,Ji-Ming Song,Bao-Kang Jin
A novel enhanced photoelectrochemical DNA sensor, based on a TiO 2 /Au hybrid electrode structure , was developed to detect target DNA. The sensor was developed by successively modifying fluorine-tin oxide (FTO) electrodes with TiO 2 nanoparticles , gold (Au) nanoparticles, hairpin DNA (DNA1), and CdSe-COOH quantum dots (QDs), which acted as signal amplification factors . In the absence of target DNA, the incubated DNA1 hairpin and the CdSe-COOH QDs were in close contact with the TiO 2 /Au electrode surface , leading to an enhanced photocurrent intensity due to the sensitization effect. After incubation of the modified electrode with the target DNA, the hairpin DNA changed into a double helix structure, and the CdSe QDs moved away from the TiO 2 /Au electrode surface, leading to a decreased sensitization effect and photoelectrochemical signal intensity. This novel DNA sensor exhibited stable, sensitive and reproducible detection of DNA from 0.1 μM to 10 fM, with a lower detection limit of 3 fM. It provided good specificity, reproducibility, stability and is a promising strategy for the detection of a variety of other DNA targets, for early clinical diagnosis of various diseases.
研究领域:
生物化学
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分析化学
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纳米技术
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生物医学工程
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DOI
PubMed
高影响因子
Polymers
·
2025
·Vol. 17
·期 21
·2879
·
IF 4.9
Guifang Yang,Qiu Wu,Gao Xiao,Xiaoxia Ye
Membrane separation is a promising technology for emulsified wastewater treatment. However, conventional membrane often suffer from limitations such as low mechanical strength, the inherent “trade-off” effect between flux and separation efficiency, and poor antifouling properties. To address these challenges, we report a novel composite membrane (CFM-UiO-66-(COOH)2) fabricated by in situ growth of functionalized UiO-66-(COOH)2on a mechanically robust collagen fiber membrane (CFM) substrate. The resulting composite leverages the inherent properties of the CFM, along with the controlled generation of charge-neutralization demulsification sites and size-sieving filtration layers from the UiO-66-(COOH)2. This CFM-UiO-66-(COOH)2exhibited superwetting behavior and achieved efficient separation of cationic surfactant-stabilized oil-in-water micro- and nano-emulsions. Specifically, the CFM-UiO-66-(COOH)2achieved separation efficiencies exceeding 99.85% for various cationic O/W emulsions, with permeation fluxes ranging from 178.9 to 225.9 L·m−2·h−1. The membrane also demonstrated robust antifouling properties, excellent acid/alkali resistance, high abrasion durability, and good biocompatibility. Importantly, stable performance was maintained over six consecutive separation cycles. These characteristics, combined with the electrostatic interactions between carboxyl groups on the UiO-66-(COOH)2and cationic contaminants, suggest that CFM-UiO-66-(COOH)2holds significant potential for practical and sustainable wastewater treatment applications.
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产品关联
DOI
PubMed
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Kemiao Nan,Ran Jia,Weibo Feng,Shize Qu,Qi Shen,Yan Lin,Bing Zheng,Xiaodong Ma
Currently, the application of SPME techniques for multi-residue pesticide analysis is highly limited. In this study, a polypyrrole (PPy) doped with carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) in-tube solid-phase microextraction (IT-SPME) nanocomposite was designed and fabricated by the electrodeposition method. The preparation parameters, such as Py concentration and MWCNTs-COOH content, were optimized. The morphology and structure of the coating were evaluated using SEM and FT-IR which revealed a distributed coating with a coarse and fine grid-like structure, achieving the desired structural integration. Additionally, experimental factors affecting extraction efficiency were optimized, such as sample volume, eluent type, etc. This method indicated a great linear range of 1–500 μg L −1 and high correlation coefficients (R 2 ) above 0.9971. The limit of detection (S/N = 3) and quantification (S/ N = 10) were 0.12–1.27 μg L −1 and 0.41–4.22 μg L −1 . The relative standard deviations (RSDs) for intra-day and inter-day analyses were in the ranges of 1.02–12.17% and 3.10–13.15%, respectively. The method achieved satisfactory spiked recovery rates ranging from 80.34% to 103.23%. Furthermore, MWCNTs-COOH/PPy coating holds outstanding stability and selectivity. Therefore, the developed IT-SPME approach was successfully used in the analysis of actual environmental water samples.
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高影响因子
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
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2020
·Vol. 20
·期 4
·2079-2086
·
IF 1.134
Hu Xiangna,Bian XingZhong,Yu Shaozhou,Dan Kun
A magnetic Fe3O4@SiO2@Ag@COOH nanoparticle (NPs)/Au film was fabricated as an effective surface-enhanced Raman scattering (SERS) substrate through a combination of a solvothermal reaction, the Stöber method and an in-situ reaction. The superparamagnetic
property of Fe3O4@SiO2@Ag and the decoration with –COOH groups allow efficient enrichment and capture of thiabendazole molecules. A large quantity of sub-10 nm gaps emerge when Ag NPs are decorated on the surface of the SiO2 shell, offering
a dramatic electromagnetic field enhancement induced by localized surface plasmon resonance (LSPR). Finite-difference time-domain (FDTD) simulations show that strong near-field enhancement around the gap areas between the Ag NPs and Au film occurs, which is caused by the coupling between the
LSPR of the Ag NPs and surface plasmon polaritons (SPPs) of the Au film. Due to the superparamagnetic property and high electromagnetic field enhancement, the Fe3O4@SiO2@Ag@COOH NPs/Au film as a SERS substrate can detect 1 μg/L thiabendazole in solution,
showing great potential for SERS detection of environmental pollutants.
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
FOOD CHEMISTRY
·
2021
·
IF 7.514
Weiqiang Li,Kaisheng Diao,Daoyang Qiu,Yifang Zeng,Kaijie Tang,Yifu Zhu,Yingying Sheng,Yangping Wen,Mingfang Li
A new strategy to mimic antibody for electrochemical recognition and detection of deoxynivalenol (DON) using a highly-sensitive and selective antibody-like sensor based on molecularly imprinted poly( l -arginine) (P-Arg-MIP) on carboxylic acid functionalized carbon nanotubes (COOH-MWCNTs) was proposed. l -arginine as functional monomer was screened to prepare imprinted electrode via its electro-polymerization in the presence of DON onto the surface of COOH-MWCNTs electrode coupled with theoretical calculation. Surface morphology, structural characteristics, and electrochemical properties of P-Arg-MIP/COOH-MWCNTs were characterized by SEM, EDS, FTIR, and CV, respectively. P-Arg-MIP/COOH-MWCNTs displayed relatively high conductivity, high effective surface area, antibody-like molecular recognition and affinity, and a good response towards DON in a linear range from 0.1 to 70 μM with LOD of 0.07 μM in wheat flour samples with satisfactory recovery and feasible practicability in comparison with HPLC. This method provides a promising biomimetic sensing platform for the determination of mycotoxins in food and agro-products.
研究领域:
食品科学
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分析化学
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生物技术
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DOI
PubMed
高影响因子
BIOMACROMOLECULES
·
2015
·
IF 5.75
Jianming Pan,Runrun Wu,Xiaohui Dai,Yijie Yin,Guoqing Pan,Minjia Meng,Weidong Shi,Yongsheng Yan
We chemically integrated mesoporous silica nanoparticles (MSNs) and macroporous bowl-like polylactic acid (pBPLA) matrix, for noninvasive electrostatic loading and long-term controlled doxorubicin (DOX) release, to prepare a hierarchical porous bowl-like pBPLA@MSNs-COOH composite with a nonspherical and hierarchical porous structure. Strong electrostatic interaction with DOX rendered excellent encapsulation efficiency (up to 90.14%) to the composite. DOX release showed pH-dominated drug release kinetics; thus, maintaining a weak acidic pH (e.g., 5.0) triggered sustained release, suggesting the composite’s great potential for long-term therapeutic approaches. In-vitro cell viability assays further confirmed that the composite was biocompatible and that the loaded drugs were pharmacologically active, exhibiting dosage-dependent cytotoxicity. Additionally, a wound-healing assay revealed the composite’s intrinsic ability to inhibit cell migration. Moreover, pH- and time-dependent leaching of the integrated MSNs due to pBPLA matrix degradation allow us to infer that the leached (and drug loaded) MSNs may be engulfed by cancer cells contributing to a second wave of DOX-mediated cytotoxicity following pH-triggered DOX release.
研究领域:
材料科学
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药学
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生物医学工程
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DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Zhongyu Jing,Wenli Su,Yu Fan
The development of a new system for the electrochemical carbon dioxide reduction reaction (ECO 2 RR) to methane (CH 4 ) is challenging, and novel conductive metal organic frameworks (c-MOFs) for efficient ECO 2 RR to CH 4 are critical to this system. Here, we report a novel c-MOF, copper-pyromellitic dianhydride-2-methylbenzimidazole (Cu-PD-2-MBI), in which the introduction of electron-withdrawing 2-methylbenzimidazole (2-MBI) into the copper-pyromellitic dianhydride (Cu-PD) interlayer elevated the valence of copper (Cu) ions, which improved the ECO 2 RR performance of Cu-PD-2-MBI. Cu-PD-2-MBI was tested in a flow cell, and the Faradaic efficiency of CH 4 reached 73.7 %, with a corresponding partial current density of −428.3 mA·cm −2 at −1.3 V, which was higher than those of most reported Cu-based catalysts. Further exploration via theoretical calculations indicated that the intercalated 2-MBI in Cu-PD-2-MBI induced a shift in the d-band center in the Cu sites from −2.63 to −1.86 eV and reduced the formation energy of the *COOH and *CHO intermediates in the process of generating CH 4 compared with those of the reference Cu-PD catalyst.
研究领域:
电化学
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材料科学
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催化
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环境科学
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产品关联
DOI
PubMed
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Yongchao Sun,Jingfa Zhang,Hongjin Li,Fangxu Fan,Qizheng Zhao,Gaohong He,Canghai Ma
Polymers of intrinsic microporosity (PIMs) have seen a growing role in gas separation membranes. Further exploitation of gas separation performance of PIM membranes and overcoming their persistent challenge of plasticization are urgently demanded. To address these issues, exemplified PIM-1 is synthesized and hydrolyzed to form carboxylated PIM-COOH polymers, followed by esterification using propylene glycol to prepare monoesterified PIM, which is finally thermally ester-crosslinked at various temperatures and time. The 300 °C-8 h treated membranes exhibit a CO 2 permeability of 7421 Barrer, with a CO 2 /CH 4 and CO 2 /N 2 selectivity of 11.5 and 19.2, respectively, considerably exceeding the 2008 Robeson upper bounds. Furthermore, the crosslinked membranes demonstrate significantly enhanced CO 2 plasticization resistance up to 42 bar, compared with uncrosslinked ones. It is the first time of reporting ester-crosslinking of carboxylated PIM-1 with both higher gas permeability and selectivity than PIM-1, using a much milder crosslinking temperature than other techniques, such as decarboxylated crosslinking. The design principle of this work paves the way for preparing high-performance and plasticization-resistant PIM membranes with promises for energy-efficient gas separations.
研究领域:
材料科学
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化学工程
·
膜技术
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产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2025
·
IF 21.1
Qi Zhang,Wei Li,Siyuan Cao,Xu Yin,Hongwei Zhu,Liankai Gu,Haoming Chen,Xiaoyuan Zhang,Weiqing Han,Kajia Wei
Precisely controlling atomic occupancy in edge-sharing sites remains challenging and limits the application of spinel oxides in advanced oxidation processes (AOPs). Herein, a series of inverse spinel oxides featuring edge-sharing Co Oh -O-Mn Oh (Oh means octahedral) configurations were designed to leverage inter-octahedral electronic redistribution and spin-state modulation, thereby enhancing catalytic performance for peroxymonosulfate (PMS) activation and pollutant degradation. The energy redistribution induced by this structure enhances the O-p/Mn-d orbital hybridization, accelerates the electron transfer kinetics between Co and Mn, and promotes the generation of high-valent cobalt-oxo (Co IV =O) species and singlet oxygen ( 1 O 2 ), thereby increasing the degradation efficiency of organic pollutants. The optimized Co-Mn inverse spinel achieved complete BPA removal within 15 min, exhibiting 11.4-fold enhancement in PMS activation efficiency than unmodified cobalt oxide, and with < 6.5 % average efficiency deviation at 100 mM ionic concentration. This study offers a strategy for the precise design of edge-sharing reactive sites in inverse spinel oxides and their application in AOPs.
研究领域:
环境催化
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高级氧化技术
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材料化学
·
无机化学
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产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Fengjun Lv,Jinyi Chen,Shengxi Wu,Ran Sun,Lu Zhang,Yawen Luo,Hao Zhang,Doudou Xu
This study developed a stable, label-free AuNPs/Fe-MOFs/COOH-GO electrochemical immunosensor for the detection of Cytokeratin 19 fragment (CYFRA21-1), a critical biomarker for the early screening and diagnosis of non-small cell lung cancer (NSCLC). The nanocomposites of AuNPs/Fe-MOFs/COOH-GO was synthesized using a combination of hydrothermal synthesis, chemical reduction, and ultrasonic dispersion. AuNPs and COOH-GO components contributed high conductivity and a large specific surface area, which significantly enhanced the sensitivity of the sensor. The three-dimensional mesoporous structure of the Fe-MOFs further improved the stability of the immunosensor. Firstly, our novel nanocomposites was modified by using a glassy carbon electrode (GCE). CYFRA21-1 antibodies were then immobilized on the modified surface via interactions with thiol and carboxyl groups present on the nanomaterial. Bovine serum albumin (BSA) was employed to block non-specific binding sites. The constructed immunosensor exhibited a wide detection range for CYFRA21-1 from 1 pg mL −1 to 100,000 pg mL −1 , with a correlation coefficient (R 2 ) of 0.9989 in differential pulse voltammetry, and the limit of detection was defined as 0.35 pg mL −1 . The sensor also demonstrated high sensitivity, excellent specificity, good reproducibility, and remarkable stability, indicating its potent application potential for the early screening and diagnosis of NSCLC.
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DOI
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2025
·
IF 9
Yuzhe Guo,Qingyuan Shi,Jiaxin Li,Youwei Huang,Jingmei Xu
In this paper, the zwitterion ADPS was modified on UiO-66-COOH by amidation reaction, and the functional UiO-66-ADPS that was produced was added to the matrix of sulfonated poly(aryl ether ketone sulfone) (SPAEKS), and the series of composite membranes of SPAEKS-UiO-66-ADPS (abbreviated as SPAEKS-U-A-X%) were successfully prepared. The UiO-66-ADPS and the series of composite membranes were characterized and evaluated. The composite membranes created exhibit excellent electrochemical performance, as well as superior water uptake and mechanical properties. Among them, at 90 °C, the proton conductivity of SPAEKS-U-A-0.75% reached 268.31 mS cm -1 , and the power density was 1553.10 mW/cm 2 , which was much higher than that of the SPAEKS membrane (302.65 mW/cm 2 ). The results show that UiO-66-ADPS significantly improved the electrochemical performance of the PEMs.
研究领域:
材料科学
·
高分子化学
·
能源材料
·
燃料电池
·
纳米复合材料
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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）