JOURNAL OF CHROMATOGRAPHY A
·
2017
·
IF 3.981
Xiuping He,Jianlei Chen,Jiangtao Wang,Liju Tan
Due to the high cost of domoic acid (DA), different carboxylic acid compounds including indole-3-acetic acid (IAA), pyrrole-2-formic acid (PFA), pyridine-2,3-dicarboxylic anhydride (PDA), trimesitinic acid (TA) and citric acid (CA) were investigated as dummy templates for the molecularly imprinted solid-phase extraction (MISPE) for selective isolation and pre-concentration of an amnesic shellfish poison (ASP), DA. The highest binding amount of the polymers towards DA was obtained when CA was used as dummy template owing to its high hydrophilicity. In addition, the “four-point” recognition site constructed by three COOH groups and a OH group in CA was also speculated to be the reason for the high binding amount of CA-MIPs and the rebinding of DA can be depend on the three COOH groups and a NH group with conformational change in the recognition process. Finally, the CA-MISPE column was chosen for DA isolation and pre-concentration and effective result was obtained with recoveries higher than 90% and relative standard deviation (RSD) less than 5% (n = 3). This new polymer can be effectively applied to the monitoring and predicting the existence of trace DA.
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POLYMER COMPOSITES
·
2016
·Vol. 39
·期 6
·2036-2045
·
IF 2.004
Jin Yang,Shaorong Lu,Qiyun Luo,Laifu Song,Yuqi Li,Jinhong Yu
A novel compatibilizer tannic grafted poly(12-hydroxy stearate) (TA- g -PHS) was synthesized using tannic and 12-hydroxystearic acid as raw materials through the esterification reaction. The compatibilizer was used to improve the compatibility between polypropylene (PP) and microcrystalline cellulose fibers (MCF). The impact strength and tensile strength of MCF/PP composites modified with the TA- g -PHS were 38.51 kJ/m 2 and 30.45 MPa when the content loading of TA- g -PHS is 3 wt% and MCF is 10 wt%, which were improved by 40.5% and 76.9%, respectively, compared to the MCF/PP composites alone. The melt flow rate improved with the addition of TA- g -PHS. And the thermal properties have slightly improved. Moreover, the SEM images of the fracture surfaces display that MCF is relatively well dispersed in the PP matrix by adding TA- g -PHS. It can be inferred that the PP and MCF matrix interfacial bonding was strengthened. POLYM. COMPOS., 39:2036–2045, 2018. © 2016 Society of Plastics Engineers
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JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Yaqing Zhao,Yaming Sun,Chenchen Song,Hailiang Zhao,Shiqi Chai,Xuemeng Xu,Lijun He
Organophosphorus pesticides (OPPs) severely pollute various environmental water due to their excessive use, and it is extremely urgent to develop novel adsorbents with high adsorption capacities, rapid removal rate and easily recovery for the removal of OPPs. In this study, defect-rich Co/N-doped hierarchically porous carbons (Co/N-DHPCs) were constructed by pyrolyzing acid-etched ZIF-67 precursor. The developed Co/N-DHPCs possessed rich defects, well-developed hierarchical porous structure, high specific surface area and excellent magnetic property, and exhibited large adsorption capacities of 103.81∼126.10 mg g -1 and high removal efficiencies of 94.06 %∼100.00 % for fenitrothion, fenthion and phosalone within 15 min. The exceptional adsorption performance of Co/N-DHPCs could be attributed to the pore-filling effect, hydrophobic and π-π interactions, as well as the new active sites formed by rich defects and N heteroatoms doping. In addition, the magnetic property of Co/N-DHPCs enabled rapid and straightforward separation from aqueous solution. The Co/N-DHPCs also showed good reusability with removal efficiencies of 85.24 % after five consecutive recycles. Furthermore, the developed Co/N-DHPCs demonstrated remarkable removal efficiencies of OPPs in seven environmental water samples, particularly in high-salt seawater. This work provides a kind of reliable adsorbents for removing pollutants in environmental water.
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DESALINATION
·
2025
·
IF 9.8
Xinyu Hu,Hongli Xie,Hao Wang,Liguo Shen,Renjie Li,Hongjun Lin,Leihong Zhao,Genying Yu
Efficient oil/water emulsion separation remains a critical challenge in industrial wastewater treatment due to the stability of emulsified oil droplets and the complexity of traditional membrane modification techniques. This study introduced a novel approach by employing a green, convenient, and controllable inkjet printing technique to fabricate a new inversely beetle-inspired hydrophobic zeolitic imidazolate framework-67 (ZIF-67) nanoparticle-modified tannic acid (TA)‑titanium (IV) bilayer structure on a polyvinylidene fluoride (PVDF) substrate. The resulting PVDF/TA-Ti(IV)/ZIF-67 membrane significantly enhanced the separation efficiency of oil/water emulsions. The TA-Ti(IV) layer not only enhanced the adhesion and uniform distribution of ZIF-67 but also minimized reagent consumption, simplifying the fabrication process. The hydrophobic ZIF-67 particles on the membrane served as localized active sites, facilitating the coalescence of small oil droplets within the emulsion, thus achieving effective demulsification and transforming stable oil-water emulsions into easily separable, unstable emulsions. This innovative membrane demonstrated optimal flux and rejection rates in oil/water emulsion separation. Its water flux exceeded 311.0 L·m −2 ·h −1 in gasoline, diesel, and soybean oil emulsions, approximately 5.5 times that of the unmodified PVDF membrane, while maintaining an oil rejection rate of over 99.6 %. Remarkably, the PVDF/TA-Ti(IV)/ZIF-67 membrane retained over 99 % separation efficiency after six filtration cycles, underscoring its exceptional antifouling performance and long-term operational stability. The innovative membrane developed in this study offers a cost-effective, scalable, and environmentally sustainable solution for large-scale oil/water emulsion treatment. Its bio-inspired wetting structure significantly enhances flux, oil rejection, and antifouling capabilities, marking a major advancement in industrial water treatment applications.
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ADVANCED MATERIALS
·
2025
·
IF 26.8
Siyi Li,Jiaoting E,Xiucheng Zhao,Rui Xie,Jiaming Wu,Lili Feng,He Ding,Fei He,Piaoping Yang
Reactive oxygen species (ROS) play crucial roles in cellular metabolic processes by acting as primary intracellular chemical substrates and secondary messengers for cellular signal modulation. However, the artificial engineering of nanozymes to generate ROS is restricted by their low catalytic efficiency, high toxicity, and off-target consumption. Herein, hetero-trimetallic atom catalysts (TACs) anchored on a stable symmetrical pyramid structure are designed in the presence of N and P surface ligands from cross-linked polyphosphazene interlayer-coated MIL-101(Fe). The 3D network TACs with a uniform dispersion of Cu, Co, and Fe hetero-single atoms effectively tailor the active sites to avoid metal sintering, thereby providing sufficient catalytic activity for ROS blooms. Nanovesicle membranes facilitate the stable accumulation of nanozymes with homologous targeting, recognition, and endocytosis, effectively addressing the potentially high toxicity and off-target defects. Therefore, the outcome of the in situ ROS-bloom acts as a redox signal for directly regulating oxidative stress in the tumor microenvironment. Meanwhile, ROS intervene in the glutathione peroxidase 4, long-chain acyl-CoA synthetase 4, and cysteinyl aspartate specific proteinase-3 pathways as second messengers, fostering the proclivity toward apoptosis and lipid peroxidation-regulated ferroptosis pathway concurrently, thereby highlighting the application prospects of TACs in the biomedical field.
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Minglang Zou,Cuiping Chen,Mingda Wang,Chen Lei,Yongming Wang,Fang Luo,Da Huang,Meishui Wang,Houbing Zheng,Biao Wang,Zhenyu Lin,Zuquan Weng
Multifunctional hydrogels hold significant promise for promoting the healing of infected wounds but often fall short in inhibiting antibiotic-resistant pathogens, and their clinical translation is limited by complex preparation processes and high costs. In this study, a multifunctional hydrogel is developed by combining metal-phenolic networks (MPNs) formed by tannic acid (TA) and gallium ions (Ga 3 ⁺) with chitosan (CS) through a simple one-step method. The resulting CS-TA-Ga 3 ⁺ (CTG) hydrogel is cost-effective and exhibits desirable properties, including injectability, self-healing, pH responsiveness, hemostasis, antioxidant, anti-inflammatory, and antibacterial activities. Importantly, the CTG hydrogels are effective against antibiotic-resistant pathogens due to the unique antibacterial mechanism of Ga 3 ⁺. In vivo studies demonstrate that the CTG hydrogel promotes follicle formation and collagen deposition, accelerating the healing of infected wounds by inhibiting blood loss, suppressing bacterial growth, and modulating the inflammatory microenvironment. These findings highlight the CTG hydrogel's potential as an advanced and translational dressing for enhancing the healing of infected wounds.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Xianling Wei,Rui Lei,Ziqing Hu,Weidong Bai,Xiaofang Zeng,Xiaoyan Liu,Huan Xie,Jieyu Chen
In this study, the influence of tannic acid (TA)/soluble potato starch (PS) mass ratio and PS concentration on TA/PS complexes and emulsions stabilized by TA/PS complexes were studied. The size, hydrophobicity and emulsifying properties of TA/PS complexes were all controlled by TA/PS mass ratio and PS concentration. In detail, the hydrophobicity of PS ( θ ow = 48°) improved after complexing with TA to form TA/PS complexes ( θ ow max = 64°). The emulsions size decreased and then increased with increasing TA/PS ratio. Additionally, the emulsifying properties of TA/PS complexes improved by increasing PS concentration. Analysis of the interfacial tension after adsorption equilibrium (0.25 mass ratio, TA/PS complexes (13.03 mN/m), TA (14.21 mN/m) and PS (20.25mN/m)), TA and PS had a synergistic effect of stabilizing the oil-water surface. Among them, TA mainly played a role in emulsifying property, and PS mainly played a role of stabilization. All emulsions exhibited obvious creaming. However, at high PS concentration or TA/PS ratio, the creaming was prevented by formed smaller emulsion size, interface complexes networks or high viscosity (Increased from 0.004 to 0.060 Pa.s). It showed that TA/PS complexes can act as emulsifiers to improve the physical and oxidative stability of emulsions, making them suitable for delivering oxidation-sensitive fat-soluble bioactive compounds.
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Current Research in Food Science
·
2025
·
IF 7
Fengyan Wei,Xianʹe Ren,Yongchun Huang,Ning Hua,Yuting Wu,Feng Yang
The combination of polyphenols and protein can improve the functional characteristics of protein. How to effectively promote the binding of polyphenols to protein is still a difficult topic. In this study, hydrodynamic cavitation (HC) was used to induce the fabrication of complexes between soy protein isolate (SPI) and different polyphenols (tannic acid (TA), chlorogenic acid (CGA), ferulic acid (FA), caffeic acid (CA), and gallic acid (GA)). The effect of HC on the interaction between polyphenols and SPI was investigated, and the structural and functional properties of the formed complexes were characterized. The results showed that HC treatment led to SPI structure stretching, which increased the binding level of polyphenols, especially that of TA (increased from 35.08 ± 0.73% to 66.42 ± 1.35%). The increase in ultraviolet–visible absorption intensity and quenching of fluorescence intensity confirmed that HC enhanced the interaction between polyphenols and protein. HC treatment reduced the contents of free sulfhydryl and amino groups in SPI–polyphenol complexes and altered their Fourier transform infrared spectroscopy, indicating that HC treatment promoted the formation of C–N and C–S bonds between SPI and polyphenols. Circular dichroism spectroscopy indicated that HC treatment altered the secondary structure of SPI–polyphenol complexes, inducing an increase in α-helix and random coil contents and a decrease in β-sheet content. Regarding functional properties, HC treatment improved the emulsification and antioxidant activity of SPI–polyphenol complexes. Therefore, HC is an effective technique for promoting the binding of polyphenols to protein.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
He Tao,Deng Zhengqiang,Li Xinliang,Luo Yufeng,Chen Lili,Ran Qihua,Ou Meng,Zhang Hehai,Tao Jiajun
Shale composed of a large amount of clay minerals is easy to swell and disperse in water, leading to wellbore instability. In recent years, adhesive shale stabilization materials have become a research hotspot because of their good bonding effect. However, many existing materials have problems such as high cost and incompatibility. In this study, polyvinyl alcohol (PVA) and tannic acid (TA) have been used as raw materials to prepare a bonding-type shale stabilizer (abbreviated as PT) for water-based drilling fluids. The shale compressive strength tests, immersion tests, linear swelling tests, and shale hot-rolling recovery tests have been used to evaluate its inhibitive performance. The results showed that the shale recovery of 3 % PT solution with a PVA/TA mass ratio of 2:1 can reach more than 90.0 %, even after hot-rolled at 150°C. In addition, the bentonite soaked in PT aqueous solution had good integrity and small volume expansion at 90°C. After immersing for 5 h, the swelling height of the bentonite sample is only 2.0 mm. Meanwhile, the compressive strength of the artificial core after soaking in 3 % PT aqueous solution at 90°C for 24 h was the highest, reaching 30.19 MPa. The rheological and filtration performance evaluation showed that PT could improve the viscosity and reduce the fluid loss of bentonite dispersion, displaying good compatibility. According to microstructure analysis, it was preferred that PVA polymer with a large number of hydroxyl groups and TA small molecules containing catechol structures in PT could form a network structure through multiple hydrogen bonding interactions, showing a strong adhesive effect. Then, PT easily adsorbed on the surface of shale or clay particles, formed a dense adsorption film on the surface to block the invasion of water molecules, and even enhanced the cementation between these particles. Finally, hydration, swelling, and dispersion of clay minerals were well inhibited, and the borewell stability was enhanced.
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Science Advances
·
2025
·Vol. 11
·期 10
·
IF 12.5
Chuhan Wang,Xiaobing Liu,Wenyan Lv,Xiao Kuang,Feng Wu,Xianqun Fan,Yan Pang
Topical drug delivery on ocular surface always suffers from frequent administration and low bioavailability due to short drug residence. Despite advances of different adhesive ophthalmic drugs in extending release, cornea and eyelid nonselective adhesion inevitably causes ocular discomfort and even damage. Here, we describe in situ formation of an adhesive lubricative Janus nanocoating (ALJN) to enable long-lasting comfort drug delivery. By iron complexation, an asymmetric ALJN is formed on ocular surface via facile sequential instillation. The adhesive polyphenol inner layer binding with ocular surface enables drug loading and sustained release, while the lubricative zwitterionic polymer outer layer prevents eyelid adhesion to ensure comfort. Following instillation, ALJN retains on ocular surface over 24 hours and reduces blinking frequency to normal level. Moreover, ALJN demonstrates remarkable therapeutic potential in mouse and rabbit models of corneal contusion and alkali burn. This work proposes a comfortable long-lasting topical delivery platform for treating various ocular diseases.
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JOURNAL OF CHROMATOGRAPHY A
·
2025
·
IF 4
Sitian Gu,Wenli Zhu,Yufei Liu,Huixiao Duo,Qingli Yang,Xiudan Hou
Efficient enrichment of analytes and purification of matrices are crucial for the highly sensitive detection and monitoring of pesticides in traditional Chinese herbs. This work prepared magnetic ionic liquid-controlled covalent organic framework (IL-COF@Fe 3 O 4 ) as the sorbent via a simple in-situ precipitation polymerization and thiolene “click” strategy. The IL-COF@Fe 3 O 4 exhibited remarkable adsorption performance towards pyrethroids within 5 min. The adsorption of four pyrethroids on the surface of IL-COF@Fe 3 O 4 was according with Langmuir model and pseudo-second-order kinetic model. The adsorption energies were theoretically calculated, which were permethrin>cypermethrin>fenvalerate>bifenthrin. The modification of ILs improved extraction capacity mainly because of the interaction of imidazole and Cl or F and the pore size effect. This method was developed for the rapid extraction of four pyrethroids in Codonopsis pilosula and Angelica sinensis . The linear range was 0.05–200 μg L -1 . Matrix effects were ranging from -16.14% to 9.53%, indicating the strong matrix anti-interference ability of IL-COF@Fe 3 O 4 .
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Advanced Healthcare Materials
·
2025
·
IF 9.6
Bo Yu,Ziwei Pang,Jing Zhao,Jingyi Xue,Hsuan Lo,Tiancheng Gu,Ping Zhang,Jiawei Tian,Guo-Qing Du
Coronary microvascular dysfunction (CMD) refers to clinical symptoms caused by structural and functional damage to coronary microcirculation. The timely and precise diagnosis of CMD-related myocardial ischemia is essential for improving patient prognosis. This study describes a method for the multimodal (fluorescence, ultrasonic, and photoacoustic) noninvasive imaging and treatment of CMD based on ischemic myocardium-targeting peptide (IMTP)-guided nanobubbles functionalized with indocyanine green (IMTP/ICG NBs) and characterizes their basic characteristics and in vitro imaging and targeting abilities. The IMTP/ICG NBs enable the accurate location of myocardial ischemia via photoacoustic imaging, and when loaded with tannic acid (TA), can be used to effectively treat myocardial ischemia and fibrosis in CMD mice, achieving an effect superior to that of free TA. The origin of this high therapeutic efficiency is revealed by transcriptomic and proteomic analyses. This investigation lays the groundwork for visual monitoring and the drug-targeted treatment of CMD.
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