SEPARATION AND PURIFICATION TECHNOLOGY
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2025
·
IF 9
Yi Wang,Huanhuan Guo,Xiaohan Xing,Can Wang,Xuefeng Zhang,Xiumin Li,Fengfeng Gao,Xiaogang Hao
A lithium aluminum iron layered double hydroxides/multiwalled carbon nanotubes/quaternized chitosan (LiAlFe-LDHs/MWCNTs/QCS) composite membrane with lithium-ion vacancies (Li + -trap) was fabricated through vacuum filtration method and pre-desorption process. The Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane had been developed for the selective extraction of Li + within the ship lock-type ion selective permeability (SL-ISP) system. In the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane, the Li + -trap within LiAlFe-LDHs was pivotal for achieving selective Li + extraction. This selectivity was realized through the cyclic intercalation of Li + into the Li + -trap sites within the interlayer structure of LiAlFe-LDHs, a process that also facilitates the permeation of Cl - . The interference of impurity ions was further eliminated by the SL-ISP system, thus facilitating the selective extraction of Li + . Upon investigation, the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane was found to achieve a Li + flux of 0.055 mol·m −2 ·h −1 and a separation factor of 8.3 at an equimolar concentration ( C Mg, Li = 0.05 M) within the SL-ISP system. Additionally, the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane demonstrated excellent separation performance in simulated brine, with a calculated Li + permeation flux of 0.053 mol·m −2 ·h −1 . The separation factors of Li + /Mg 2+ , Li + /K + , Li + /Na + and Li + /Ca 2+ reached values of 91.84, 69.75, 81.51 and 17.99, respectively. Therefore, the Li + -trap LiAlFe-LDHs/MWCNTs/QCS composite membrane could be effectively applied in the SL-ISP system for the selective extraction of Li + .
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高影响因子
ANALYTICAL CHEMISTRY
·
2025
·
IF 6.7
Zhihua Zhao,Shixin Ma,Yao Wang
Hydrogen sulfide (H2S), a characteristic byproduct of sulfur-containing amino acid decomposition during fish spoilage, serves as a critical freshness indicator and poses substantial food safety risks. This study develops a novel H2S gas sensor using a ZnWO4/f-MWCNTs nanocomposite synthesized via one-step hydrothermal method. The incorporated functionalized multiwalled carbon nanotubes (f-MWCNTs) improve the sensing material’s conductivity, dispersion stability, and gas adsorption capacity. XRD, XPS, FTIR, SEM, TEM, and BET analyses verify the composite’s successful synthesis and optimal physicochemical properties. The ZnWO4/f-MWCNTs sensor demonstrates exceptional H2S detection at 120 °C, achieving a response value of 18.67 (Ra/Rg) to 50 ppm of H2S with fast response/recovery times (14 s/30 s) and excellent selectivity against interferents. Real-time monitoring of fish spoilage further confirms its practical utility, highlighting the sensor’s potential for meat freshness assessment and food safety applications.
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PubMed
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2020
·
IF 7.094
Hai-Yan Wang,Yan-bin You,Jun-Wei Zha,Zhi-Min Dang
For present ceramic particles/polymer dielectric composite materials, their dielectric properties and thermal conductivity haven't met the application requirement at the same time. In this research, to achieve this goal, barium titanate@super short MWCNTs (BT@SSCNT) core-shell particle was prepared in a confinement reactive space built by water phase and oil phase. Polyvinylidene fluoride (PVDF) based composite flexible films reinforced by the BT@SSCNT particles possessed desired dielectric and excellent thermal behaviors. Especially for the composite film with 60 wt% (containing less than 17 wt% SSCNT) loading, at 10 2 Hz and in the wide temperature range of −40–140 °C, dielectric constant and dielectric loss varied from 476 to 764 and from 2.74 to 4.58, respectively. Meanwhile the thermal conductivity of this film reaches 25.43 W/(m K). The promising dielectric properties and high thermal conductivity of the films are attributed to multiple roles of SSCNT shell layer including external electric field applying on BT particles, tremendous interfacial polarization area, restricted electron motion and electron efficient in transporting heat. The BT@SSCNT/PVDF composite films can be a promising candidate for the modern electronic industry.
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高影响因子
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
·
2026
·
IF 4.6
Wenqiao Ye,Yawen Luo,Shengxi Wu,Ran Sun,Hao Zhang,Jingyi Chen,Yunming Wang,Linyu Xiao,Kui Gu
High-affinity LP-PLA₂ mAb and AuPdNPs@GO-MWCNTs are fabricated to immobilize antibodies and amplify electrochemical signals. • A label-free competitive DPV immunosensor for LP-PLA 2 achieves a low LOD of 0.30 ng/mL with a linear range covering clinical concentrations. • The immunosensor exhibits favorable repeatability, stability and selectivity, and its clinical test data well matches standard chemiluminescence results. • The rapid sensitive platform distinguishes LP-PLA₂ positive/negative samples and has promising prospects for early atherosclerosis diagnosis. Lipoprotein-associated phospholipase A2 (Lp-PLA2) has emerged as a novel and critical clinical biomarker for vascular inflammation of atherosclerosis and cardiovascular disease risk assessment. However, current detection methods often face challenges regarding sensitivity, cost-effectiveness or complex operational procedures. Herein, a highly sensitive and selective electrochemical immunosensor was developed for the quantitative determination of Lp-PLA2. In this study, the sensing platform leverages the synergistic effect of AuPdNPs@GO-MWCNTs composites and high-affinity monoclonal antibodies. Firstly, the AuPdNPs@GO-MWCNTs was synthesized and characterized via SEM, EDS and XRD, which provided abundant electroactive sites and accelerated interfacial electron transfer. Subsequently, the maturely prepared Lp-PLA2 mAbs were immobilized onto the modified electrode surface to ensure specific molecular recognition. Under optimized experimental conditions, the proposed immunosensor exhibited a wide linear range from 1 to 2000 ng/mL, with a remarkably low limit of detection (LOD) of 0.3 ng/mL (S/N = 3). Furthermore, the sensor demonstrated excellent reproducibility, long-term stability, high selectivity against common interfering substances in serum and reliable detection recovery rate (97.21%–100.59%). As a result, the practical applicability of the biosensor was validated using real clinical samples, showing a high correlation with standard clinical assays. This study presents a robust platform for the rapid detection of Lp-PLA2 and demonstrates the promising potential of AuPdNPs@GO-MWCNTs in enhancing the performance of electrochemical diagnostic systems. Download: Download high-res image (143KB) Download: Download full-size image
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高影响因子
TALANTA
·
2026
·
IF 6.7
Zihao Zhao,Jianlong Li,Jinmi Zhang,Qiang Li,Sheng Li,Yingbo Shi,Xiaoli Xiong
The simultaneous determination of dopamine and uric acid in complicated biological matrices remains challenging due to overlapping electrochemical signals and interference from coexisting species. Herein, a machine learning-assisted electrochemical sensor based on a Cu 3 (HHTP) 2 /COOH-MWCNTs hybrid is developed for the simultaneous determination of these analytes. Benefiting from the unique π-π stacking and π-d conjugation characteristics of Cu 3 (HHTP) 2 , as well as the excellent coordination effect between COOH-MWCNTs and Cu 2+ and the good dispersibility of carbon nanotubes themselves, the composite material exhibits more prominent surface activity, significantly boosting the exposure of active sites and accelerating the electron transfer kinetics at the electrode-electrolyte interface. On this basis, we constructed an electrochemical sensing platform for the simultaneous detection of DA and UA in human serum samples. The sensor show excellent performance with dual linear ranges of 0.5–15 and 15–80 μM for DA, and 1–200 and 200–350 μM for UA, achieving low LODs of 0.039 μM and 0.083 μM, respectively (S/N = 3). Furthermore, machine learning (ML) algorithms were employed to optimize electrochemical signal processing, enabling more accurate and robust analysis of complex data. The proposed approach achieved successful application in the simultaneous determination of DA and UA in human serum matrix samples.
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PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Jiahuan Wang,Zuozhu Yin,Xiangyu Han,Yongcun Ma,Zhen Hong,Chan Xie,Zhiyang Jiang,Mingshan Xue
A superhydrophobic conductive fabric is fabricated via scalable spray-coating of Zn-Co LDH/MWCNTs/POTS. • The fabric achieves > 96% oil-water separation efficiency with excellent cyclic stability. • Integrated electrocatalytic function degrades organic pollutants within 2 h under low voltage. • Robust durability under abrasion, chemical, thermal, and vibration stresses is demonstrated. • COMSOL simulations reveal the wettability–pore synergy governing enhanced separation. The ingress of moisture into aircraft engine lubrication systems poses a serious threat to flight safety and component service life; consequently, there is an urgent need to develop novel multifunctional materials capable of oil-water separation and environmental remediation. In this study, a three-dimensional superhydrophobic conductive fabric with a structure resembling peacock feathers was fabricated for oil-water separation in the aerospace sector. The material was prepared by spraying a composite of zinc-cobalt layered double hydroxide (LDH), modified with perfluorooctyl triethoxysilane (POTS) and multi-walled carbon nanotubes (MWCNTs), onto a conductive fabric substrate. It exhibits superhydrophobicity (water contact angle as high as 161.2°), electrocatalytic degradation capability and oil-water separation capability. The conductive network of multi-walled carbon nanotubes enables electrocatalytic degradation at a low voltage of 20 V, whilst the superhydrophobic surface selectively allows rapid oil penetration, achieving oil-water separation efficiencies of 96–99.4% under thermal radiation conditions. The material maintains stable superhydrophobicity even after repeated cycles and exposure to mechanical abrasion, corrosive media and high-temperature ageing (220°C). COMSOL simulations elucidated the synergistic mechanism between selective wetting and thermal viscosity modulation. This study provides an integrated solution for next-generation aviation fuel systems that combines physical separation with electrocatalytic purification. Furthermore, the coating preparation process is simple and the raw materials readily available, offering significant potential for large-scale mass production. Download: Download high-res image (178KB) Download: Download full-size image A superhydrophobic conductive fabric (HCF) modified with Zn-Co LDH/MWCNTs composite was fabricated. Through micro-nano structure regulation and surface energy modification, it synergistically achieves efficient oil-water separation, low-voltage electrocatalytic degradation, and self-cleaning properties. Exhibiting excellent mechanical stability and chemical durability under harsh operating conditions of aero-engines, this material provides a multifunctional integrated solution for water pollution control and contaminant purification in aviation fuel systems.
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高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2026
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IF 5.4
Qian Xu,Zilong Liu,Jiawei Du,Yueqi Zhu,Min Ruan,Huaqiang Chu
A robust photothermal superhydrophobic coating was prepared via in-situ growth of ZIF-8. • Exceptional anti-icing shows 3.95 times freezing delay and 68.05% lower ice adhesion. • High photothermal efficiency of 76.56% enables rapid active ice melting and shedding. • Chemical bonding ensures durable performance after severe abrasion. In low-temperature and high-humidity environments, the accumulation of surface ice layers poses a serious safety threat to fields such as aerospace, power transmission, and transportation. However, traditional superhydrophobic coatings commonly suffer from poor mechanical robustness and functional failure under complex mechanical service conditions. In this work, Metal–organic frameworks (ZIF-8) were successfully grown in-situ on carboxylated multi-walled carbon nanotubes (MWCNTs-COOH), constructing a novel photothermal superhydrophobic composite coating with a multilevel micro-nanostructure. With the synergistic effect of an E51/PDMS resin matrix and subsequent modification by a low-surface-energy fluorosilane (PFTS), the coating achieves excellent superhydrophobicity and outstanding mechanical robustness. Anti-/de-icing tests demonstrate that at −20 ℃, the icing time is delayed by 3.95 times and the ice adhesion strength is reduced to 123.66 kPa. Benefiting from a high light absorption of 97.81% and a photothermal conversion efficiency of 76.56%, the coating enables rapid active melting of accumulated ice under simulated illumination. This integrated strategy—combining tough interfacial design, long-term passive anti-icing, and efficient active de-icing—provides an effective and stable solution for long-lasting ice protection of infrastructure. Download: Download high-res image (180KB) Download: Download full-size image
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高影响因子
MICROCHEMICAL JOURNAL
·
2021
·
IF 4.821
Mingyue Wang,Hao Guo,Rui Xue,Qixia Guan,Junye Zhang,Tingting Zhang,Lei Sun,Fan Yang,Wu Yang
Covalent organic frameworks (COFs) offer high surface area, ordered π conjugation system, tunable pore size and structure which are useful for developing electrochemical sensor. However, most COFs were poor conductivity and slow charge transfer rate which restrict their application in electrochemical sensor. Metal-covalent organic frameworks (MCOFs) possess the good electroconductivity and catalytic activity. In addition, the periodic arrays of π clouds of layered 2D structure facilitate charge transport. Here we propose a new strategy to construct a novel electrochemical sensor employing MCOFs (CuP-SQ COF). The fabricated sensor MWCNTs-COOH/CuP-SQ COF/Co NPs/GCE exhibits the excellent performance for the simultaneous determination of DNA base (guanine and adenine) with high sensitivity which can be attributed to the outstanding properties, unique structure and synergistic effect of composites. The wider concentration range of simultaneous quantitive analysis were 0.04 to 130 μM for guanine and 0.06 to 130 μM for adenine . The lower detection limits were 5.5 nM and 7.2 nM (S/N = 3), respectively. This work proves MCOFs can serve as a promising candidate as modified electrode material for developing electrochemical sensor.
研究领域:
生物化学
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材料科学
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分析化学
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高影响因子
International Journal of Electrochemical Science
·
2023
·Vol. 13
·期 2
·1754-1772
·
IF 1.5
Zheng Chang,Zhuanzhuan Gao
In this paper, we concentrated on the simplest way to synthesize Nickel ion doped poly (neutral red) (Ni 2+ @PNR) hybrid nanocomposites (abbreviated as Ni 2+ @PNR HN) through a reverse microemulsion method. Because the MWCNTs/Nafion composite film was negatively charged, the positively charged Ni 2+ @PNR HN can be adsorbed by electrostatic interactions onto the surface of MWCNTs/Nafion modified electrode. The hybrid nanocomposite exhibited excellent electrocatalytic activity for glucose oxidation due to three-in-one synergistic effects, namely, the special copolymerization structures of Ni 2+ @PNR HN as an active catalytic center; the amount of doping of Ni2+ can be tuned by the attachment of NR with MWCNTs/Nafion, resulting in the hybrid nanocomposites containing much more Ni 2+ and possessing a significant signal amplification effect toward the glucose oxidation reaction; the effective immobilization of Ni 2+ at the modified electrode surface was achieved by the non-covalent interaction of hybrid nanocomposites and MWCNTs/Nafion support materials. Accordingly, the Ni 2+ @PNR HN/MWCNTs/Nafion modified electrode displayed an enhanced electrocatalytic activity to glucose oxidation in 0.1 mol·L -1 NaOH solution, owning the advantages of higher sensitivity, lower detection limit, wide linear range, and good stability and selectivity for constructing a novel enzyme-free glucose electrochemical sensor.
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高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2020
·Vol. 31
·期 11
·2615-2631
·
IF 2.578
Dina F. Katowah,Gharam I. Mohammed,Dyab A. Al-Eryani,Osman I. Osman,Tariq R. Sobahi,Mahmoud A. Hussein
The nanocomposites (NCs) of cross-linked polyaniline (CPA) with a variety of carbon nanomaterials (CNMs) (CPA/CNMs NCs) was prepared by the chemical oxidative copolymerization of PANI and p-phenylenediamine (PPDA) with triphenylamine (TPA) in the presence of CNMs. The results of XRD, FTIR and Raman indicated that the CPA/CNMs NCs were effectively synthesized with strong interactions among the constituents. The morphology study demonstrated that CNMs were well coated by CPA and produce a well-aligned nanorod core-shell structure with the large surface area which may be more beneficial to electrical conductivity when used as electrode materials. Differential thermal analysis techniques (TGA-DTG) were used to characterize the thermal stability of NCs. The heat of formation of CPA monomer from TPA, PPDA and aniline (ANI) were computed using Density Functional Theory (DFT) calculations. The NCs of G-MWCNTs demonstrate higher affinity to oxidation of Chlorophenols (CPHs) than glassy carbon electrode (GCE), CPA/GCE and the other NCs. Differential pulse voltammetry (DPV) was used for the trace determination of 2,4-dichlorophenol (2,4-DCP). Under the optimum conditions, the peak current of 2,4-DCP was proportional to its concentration in the range of 0.05-0.6 μmol/L. The detection limit was 7.6 nmol/L. The method was successfully applied for the determination of 2,4-DCP in fish farm water with satisfactory recoveries. The suggested method has an advantage to be used for water samples due to its short analytical time, rapid response, high sensitivity, and excellent selectivity with good reproducibility.
研究领域:
分析化学
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环境科学
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纳米材料
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电化学传感
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水污染监测
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高影响因子
Food Bioscience
·
2023
·
IF 5.2
Xiao-Jian Zhang,Bao-Juan Dou,Yu-Qi Wang,Fei Yang,Xue Cai,Mian Li,Zhi-Qiang Liu,Yu-Guo Zheng
Functional sugar alcohols are a kind of burgeoning food additives to substitute saccharose due to the prominent biofunctions including moderate sweetness, low calorific values and no influence on blood sugar fluctuation, thus applied widely in food, medical, health protection as well as chemical production. Traditional synthesis of functional sugar alcohols required high temperature and H 2 pressure, as well as leading to low reaction efficiency, side reactions and leaching of toxic metal ions. In the present work, Pt–Ni–Sn/MWCNTs catalyst was obtained using a liquid phase reduction method with the transition metals loading of Pt 3.4%, Ni 0.7%, Sn 0.4%, respectively. The catalyst catalyzed the preparation of xylitol , sorbitol , mannitol and galactitol with the high monosaccharide conversion (>99.5%) and yield (>99.1%) under relatively mild conditions (100 °C, 3.0 MPa H 2 ), which were lower than ever reported. For the 13-batch reuse of Pt–Ni–Sn/MWCNTs, the total conversion of xylose was 99.4% and the total yield of xylitol was 99.2%, the productivity of 103.2 g xylitol per gram of catalyst was also obtained. Besides, no side reactions, no metal ions as well as no changes of pH were observed in the reaction process. Our trimetallic catalyst exhibited valuable potential in functional sugar alcohols production.
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高影响因子
MICROCHEMICAL JOURNAL
·
2022
·
IF 5.304
Zhijuan Wang,Ran Han,Lin Li,Jiaqing Sun,Jingying Yang,Mingfei Pan,Shuo Wang
A facile, ultra-sensitive and cost-effective electrochemical sensor was successfully prepared by combining metal–organic framework ZIF-8 with MWCNTs-COOH, which detecting of tert -butylhydroquinone (TBHQ) in edible oil and fried foods. The hydrothermally synthesized ZIF-8 material with microporous structure was demonstrated to have large specific surface area, and together with the MWCNTs-COOH with high electrical conductivity and catalytic properties, was used as a modified substrate for electrodes. Because of the synergistic effect between ZIF-8 and MWCNTs-COOH, the modified electrode exhibited significant electrocatalytic ability for TBHQ. Under the optimal experimental conditions, the ZIF-8/MWCNTs-COOH modified electrode obtained good linearity when the TBHQ concentration ranged from 0.01 to 25.0 μg mL −1 with the LOD (limit of detection) of 0.009 μg mL −1 (S/N = 3). Moreover, the constructed electrochemical sensor exhibits better anti-interference capability, reproducibility and stability, and can be used to monitor the content of TBHQ in oil and fried foods.
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高影响因子
危险品化学品经营许可证（带存储）