SOLID STATE SCIENCES
·
2026
·
IF 3.6
Shuaishuai Zhang,Xinan Sun,Jiaxi Wang,Yulong Feng,Yuchang Chen,Yiheng Chi,Meizhu Hou,Teng Miao,Lianke Zhang
Co-Mg 1.5 @C were successfully prepared to activate PMS for TC degradation. • The degradation mechanism is the synergistic effect of free radicals (SO 4 . •– , •OH, O 2 •– ) and non-free radicals ( 1 O 2 ). • A small amount of Mg doping can greatly reduce the leaching of cobalt ions. • In a continuous flow reactor, the catalyst achieved complete degradation of both TC and MB within 300 min, with the treated effluent exhibiting substantially reduced toxicity. Aquatic antibiotic pollution caused by tetracycline (TC) has posed a severe threat to ecological security and human health, and the development of efficient and stable cobalt-based catalysts for peroxymonosulfate (PMS) activation is the key to solving this problem via advanced oxidation processes. However, the existing cobalt-based catalysts suffer from the defects of active site agglomeration, serious cobalt leaching and poor stability. In this work, a facile synthesis of Mg/C co-doped Co-based catalyst (Co-Mg@C) derived from ZIF-67 for enhanced activation of PMS toward TC degradation. The introduction of Mg not only modulates the electronic structure of Co active sites but also effectively suppresses Co agglomeration. Meanwhile, the carbon matrix derived from fumaric acid (FA) provides a conductive and porous framework, which improves both electron transfer kinetics and the overall dispersibility of the catalyst. The optimized Co-Mg 1.5 @C catalyst exhibited exceptional catalytic activity, achieving nearly complete TC removal within 60 min, while maintaining robust performance over a wide pH range and in the presence of various co-existing ions. Radical quenching and electron paramagnetic resonance (EPR) studies confirmed that TC degradation proceeded via the synergistic action of both radical (SO 4 •– , •OH and O 2 •– ) and non-radical ( 1 O 2 ) species. The Co-Mg 1.5 @C catalyst also displayed excellent reusability with minimal cobalt leaching and broad-spectrum activity towards multiple organic pollutants. Application tests in real water matrices and toxicity assessments further confirmed its environmental compatibility and practical feasibility. This study provides valuable insights into the rational design of cost-effective and stable MOFs-derived catalysts for advanced water treatment applications. Download: Download high-res image (468KB) Download: Download full-size image
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COLLOID AND POLYMER SCIENCE
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2026
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IF 2.9
Zhou Lu,Yu Xiaozhou,Lyu Shuxiang,Liao Xiaoyuan,Li Zhen,Yao Yue,Zhang Haoling
A novel small-caliber vascular prosthesis prototype (SCVPs) with antibacterial application is proposed based on the controlled delivery of heparin from ZIF@polymer monolith. The traditional powdery small-caliber vascular prosthesis material has the disadvantages of difficult separation and easy agglomeration, which limits its applications. Heparin (HP)-loaded porous ZIF-8/Polymer (PEG, PVA, and PVP) monoliths were fabricated using a freeze-casting method in liquid nitrogen (− 196 ℃) for controlled heparin release and sterilization. The incorporation of ZIF-8/Polymer significantly improved the antibacterial performance of the samples, prolonged the slow-release time of heparin sodium, and also resulted in better mechanical properties. The samples synthesized at a heparin sodium concentration of 0.36 mg·mL −1 exhibited good sustained release of heparin sodium when used as artificial antigenic matrix. Among these materials, the cured HP@ZIF-8 sample had a retarded release time of up to 15 h, with a cumulative release of 223.56 μg at 24 h. With PVA as the optimal polymer, heavy metal ions from the cured HP@ZIF-8 material can cause severe toxic damage to the internal structure of bacteria, interfere with bacterial metabolism, and thus show obvious antibacterial effects.
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Gels
·
2025
·Vol. 11
·期 10
·813
·
IF 5.3
Bingbing Chen,Mengqi Hao,Hao Cui,Rui Zeng,Hang Ma,Anying Long,Xuegang Li
Periodontitis is a chronic oral inflammatory disease whose treatment is often hindered by poor drug retention, prolonged therapeutic regimens, and the rise of antibiotic resistance. In this study, we developed a Hydrogel@ZIF-8@metronidazole (Hydrogel@ZIF-8@MNZ) nanocomposite dressing for targeted, sustained, and in situ antimicrobial therapy. This system integrates ZIF-8, a pH-responsive metal–organic framework, with the antimicrobial agent metronidazole (MNZ), encapsulated within a crosslinked hydrogel matrix to enhance stability and retention in the oral environment. Drug release studies demonstrated that MNZ release was significantly accelerated under acidic conditions (pH 5.0), mimicking the periodontal microenvironment. The Hydrogel@ZIF-8 composite achieved a maximum MNZ adsorption capacity of 132.45 mg·g −1 , with a spontaneous and exothermic uptake process best described by a pseudo-second-order kinetic model, suggesting chemisorption as the dominant mechanism. The nanoplatform exhibited strong pH-responsive behavior, with enhanced drug release under acidic conditions and potent dose-dependent bactericidal activity against Fusobacterium nucleatum ( Fn ). At the highest tested concentration, bacterial survival was reduced to approximately 30%, with extensive membrane disruption observed through live/dead fluorescence microscopy. In summary, the stimuli-responsive Hydrogel@ZIF-8@MNZ nanocomposite offers an intelligent and effective therapeutic strategy for periodontitis. By tailoring its action to the disease microenvironment, this platform enables sustained and localized antibacterial therapy, addressing major challenges in the treatment of chronic oral infections.
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高影响因子
INORGANIC CHEMISTRY COMMUNICATIONS
·
2025
·
IF 5.4
Xing Wei,Yaling Ye,Wanling Cai,Zuliang Chen
Antibiotics like doxorubicin hydrochloride (DOX) are widely used in medicine, but their environmental residues pose risks to human health and ecosystems. This study optimized the synthesis of C-Fe₃O₄@ZIF-8 composites using response surface methodology (RSM) to enhance DOX release efficiency, thereby mitigating environmental antibiotic contamination. Under optimized conditions (37 °C, pH 5.0), the C-Fe₃O₄@ZIF-8 composite achieved a significant increase in cumulative DOX release, from 40.8% to 61.1%. The pH-responsive release further validated the optimization strategy. Characterization via scanning electron microscopy (SEM) and X-ray diffraction (XRD) revealed a structural transformation from rhombic dodecahedral crystals to more stable spherical particles with enhanced crystallinity. Fourier-transform infrared spectroscopy (FTIR) and X-ray photoelectron spectroscopy (XPS) confirmed an increase in surface-active sites and oxygen-containing functional groups, contributing to improved drug release efficiency. These findings provide valuable insights into optimizing C-Fe₃O₄@ZIF-8 for drug delivery, advancing environmentally friendly antibiotic management strategies.
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NEW JOURNAL OF CHEMISTRY
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2025
·
IF 2.5
Yafeng Jin,Xueyang Zhang,Didi Tong,Yinfeng Cheng,Fangming Han,Junchao Wu,Zhiying Qin
Heavy metal ions in food pose severe health risks, necessitating the development of simple and effective detection methods. In this work, we constructed an electrochemical sensor for simultaneous detection of Cd2+ and Pb2+ by modifying a glassy carbon electrode (GCE) with a composite of cobalt-based zeolitic imidazolate framework (Co-ZIF) and carbonized litchi pericarp (LP) for the first time. The Co-ZIF@LP/GCE sensor leverages a synergistic "adsorption-conduction" mechanism: Co-ZIF provides abundant adsorption sites and catalytic activity, while LP enhances electrical conductivity and stability. Electrochemical performance was evaluated using cyclic voltammetry and electrochemical impedance spectroscopy. Key parameters including buffer pH, modification material ratio, drop-coating volume, deposition potential, deposition time, and quiet time were optimized via square wave stripping voltammetry. Under optimal conditions, the sensor exhibited high sensitivity toward Cd2+ and Pb2+, with wide linear ranges (1-10 μM,10-65 μM) and low detection limits (0.028 μM and 0.197 μM). Practical application in rice and millet samples demonstrated good recovery and precision, confirming the method's reliability for detecting heavy metal ions in food samples.
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Materials Today Nano
·
2026
·
IF 8.2
Le Yin,Mu Hu,Yajie Liu,Yang You,Yuan Wang,Shaojun Yuan
Efficient separation of oil–water emulsion remains a persistent challenge in wastewater treatment, as conventional membranes often suffer from fouling, poor recyclability, and lack of dynamic control. Here, we report a light-triggered thermo-responsive superwetting nanofiber membrane (PPZ@GO) that combines electrospun PNIPAM/PVDF nanofibers with graphene oxide (GO) and in situ grown bimetallic CoZn–ZIF frameworks. In this hybrid design, PVDF provides mechanical robustness, PNIPAM enables reversible thermo-responsive wettability, GO facilitates rapid photothermal heating, and CoZn–ZIF imparts hierarchical roughness and enhanced interfacial functionality. The optimized [email protected] % membrane exhibits rapid photothermal heating to 48.6 °C within 20 s under simulated solar light, enabling reversible wettability switching between underwater superoleophobicity (light off, below LCST) and under-oil superhydrophobicity (light on, above LCST). This dual-mode response allows on-demand separation of both oil-in-water and water-in-oil emulsions, achieving fluxes above 2000 L m −2 h −1 and 1000 L m −2 h −1 , respectively, with separation efficiencies exceeding 99 %. The membrane further demonstrates excellent antifouling resistance, mechanical durability, and stable performance across repeated cycles. By integrating photothermal conversion with thermo-responsive switching in a nanofibrous MOF–polymer scaffold, this work provides a versatile strategy for designing smart, energy-efficient membranes, offering broad potential for next-generation oily wastewater remediation and advanced separation technologies.
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JOURNAL OF NUCLEAR SCIENCE AND TECHNOLOGY
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2026
·
IF 2.5
Lin Shiji,Chen Yuantao,Zhang Wei,Shao Chaoli,Mao Haibo,Zhou Xiaohang
Radioactive iodine from nuclear accidents like Fukushima necessitates efficient wastewater treatment technologies. Current adsorbents are hampered by challenging recovery and limited reusability. Herein, we synthesize a magnetic composite, GS@Fe3O4@ZIF-8, by anchoring ZIF-8 to magnetized Galdieria sulphuraria(GS), allowing for sub-one-minute magnetic separation. This adsorbent achieves a high iodine adsorption capacity of 1712.08 mg/g at pH 5, outperforming most MOF-based benchmarks. Characterization (XRD, SEM, FT-IR, XPS, EDS) verified its structure. Adsorption studies determined the optimal conditions (pH 5) and demonstrated robust performance across varied concentrations, temperatures, and times. The material also exhibits superior selectivity and stability, retaining 83% efficiency over three cycles. Our findings highlight GS@Fe3O4@ZIF-8 as a sustainable and recyclable material for radioactive iodine capture.
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Advanced Optical Materials
·
2026
·Vol. 14
·期 34
·e71656
·
IF 7.2
Ke Wang,Ziyang Zhao,Aidi Zhang,Jicun Ren
InP quantum dots (QDs) are promising for next-generation displays due to their superior color purity, high quantum yield, tunable emission, and non-toxicity. However, their practical application is limited by instability under heat, oxygen, and intense illumination. To address this critical issue of stability, we proposed a dual-layer encapsulation strategy. Firstly, InP/ZnSe/ZnS QDs are synthesized via a “one-pot” approach. Then, mZIF-8@QDs materials are prepared by embedding QDs into a mesoporous zeolite imidazolate framework (mZIF) formed after pore structure modification and surface modification. Finally, a novel vacuum-assisted deposition method is employed to uniformly polymerize polymethyl methacrylate (PMMA) on the surface of mZIF-8@QDs, thereby achieving a secondary coating and obtaining the mZIF-8@QDs@PMMA composite material. The QDs loading capacity was significantly enhanced by modification of the saturated fatty acid for mesoZIF-8. The synthesized fluorescent composite material exhibits high quantum yield, long fluorescence lifetime, good photostability and thermostability. Furthermore, this composite material is used as a color conversion layer in liquid crystal displays (LCDs). The experimental results indicate that the composite material has exceptional durability, and retains over 95% of its initial luminance after 1000 h of accelerated aging under continuous high-temperature and high-intensity blue light irradiation.
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TALANTA
·
2025
·
IF 6.1
Yuanyuan Ding,Ping Wang,Na Wang,Liyun Kong,Min Li,Jing Wang,Tao Zhang
The immunoassay methods, stand as the gold standard in biomedicine, are widely used in diagnostics. However, they often encounter inherent limitations in practical applications, such as the poor stability of enzymes and antibodies, and the laborious process of preparing enzyme-antibody conjugates through covalent bonding. Mas-related G-protein-coupled receptor X2 (MRGPRX2) has been identified as a blood-based diagnostic biomarker for chronic spontaneous urticaria (CSU). In this study, a bifunctional enzyme-labeled antibody (anti-MRGPRX2&HRP@ZIF-8) was successfully constructed by integrating horseradish peroxidase (HRP) into ZIF-8 during its synthesis, followed by adsorption of anti-MRGPRX2 onto the surface of HRP@ZIF-8. The resulting anti-MRGPRX2&HRP@ZIF-8 complex not only preserved its antigen-capturing capability but also exhibited improved stability. The established chemiluminescence immunoassay (CLIA) method based on anti-MRGPRX2&HRP@ZIF-8 demonstrated enhanced stability and achieved a lower detection limit (1.035 ng/mL) compared to conventional enzyme-linked immunosorbent assay (ELISA) method. Furthermore, MRGPRX2 was successfully detected in serum samples by the established method, demonstrating its suitability for the diagnosis of CSU in real clinical samples. Consequently, this study presented a promising approach for simplifying the preparation of enzyme-antibody conjugates and highlighted the potential of metal-organic framework (MOF)-based composites in biomedical applications.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Jiaojiao Su,Yaning Zhang,Peixi Huang,Hangyi Wen
To overcome the limitations of epoxy (EP) coatings such as inherent mechanical brittleness and insufficient barrier performance, this study developed a novel ZIF-8/Ce-MMT (ZCM) composite filler via a facile one-step synthesis approach. The resulting ZCM filler exhibits excellent thermal stability and dispersibility, and endows EP coatings with multifunctional anti-corrosion properties including enhanced barrier resistance, anodic passivation, and cathodic inhibition. Electrochemical tests demonstrate that the ZCM/EP composite coating achieves an exceptional corrosion inhibition efficiency of 93.97 %. After 50 days of immersion in 3.5 % NaCl solution, the coating containing only 1.5 wt% ZCM maintains a low-frequency impedance modulus 39.5 times higher than that of pure EP. Furthermore, the composite coating exhibits outstanding wear resistance with a 19.3 % reduction in mass loss compared to unmodified EP. The ZCM/EP system represents a significant advancement in multifunctional protective coatings, combining passive barrier enhancement with active self-healing behavior and improved mechanical durability, offering a new strategy for designing high-performance anti-corrosion coatings under demanding service conditions.
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FOOD CHEMISTRY
·
2023
·
IF 8.8
Mingyan Li,Taotao Zhe,Ruixia Li,Feier Bai,Pei Jia,Zhihao Xu,Xin Wang,Tong Bu,Haiyu Wu,Li Wang
Designing efficient and sensitive methods for the detection of nitrofurantoin (NFT) residues is of great importance for food safety and environmental protection. Herein, a composite with cobalt nanoparticles encapsulated in nitrogen-doped carbon nanotube (N/ [email protected] @CC-II) was synthesized by in-situ growth and sublimation-gas phase transformation strategy and used to establish an ultrasensitive electrochemical sensor for NFT determination. The N/ [email protected] @CC-II sensor exhibits uniform N doping, fine hollow structure, and abundant active metal sites, which lays a solid foundation for the ultra-sensitive detection of NFT. Benefiting from these advantages, the N/ [email protected] @CC-II exhibits excellent sensitivity (8.19 μA μM −1 cm −2 ) and low detection limit (18.41 nM) for NFT detection. The practical feasibility of N/ [email protected] @CC-II was also demonstrated by the determination of NFT in milk and tap water samples. This study may open up new opportunities for the application of N -doped carbon nanotube materials encapsulating transition metals.
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FUEL
·
2023
·
IF 7.4
Yuxiang Mao,Jun Cheng,Hao Guo,Lei Qian,Yang Xu,Jiacan Tu,Weijuan Yang
To strengthen active sites in zeolitic imidazolate frameworks (ZIFs) to effectively convert microalgal lipids into biodiesel, acid-base bifunctional single-atom catalysts with Zn-N x coordination were synthesized through pyrolyzing ZIF-8. The saturated coordinated Zn-N 4 sites were destroyed and converted to unsaturated coordinated Zn sites and surrounding N atoms at 700 °C, which enhanced Lewis acidity and basicity, respectively. The Zn-N content in the catalyst decreased from 77.68 % to 43.26 %, while that of pyridinic N increased from 8.14 % to 36.73 %. The acidity of the catalyst increased from 0.498 to 3.979 mmol/g, whereas basicity increased from 0.219 to 0.650 mmol/g. According to density functional theory calculations, unsaturated coordinated Zn-N x (x = 1, 2, 3) sites exhibited lower free energies and reaction energy barriers in free fatty acid esterification. The energy barriers for rate-determining steps over Zn-N 4 , Zn-N 3 , Zn-N 2 , and Zn-N 1 sites were + 1.01 eV, +0.82 eV, +0.63 eV, and + 0.54 eV, respectively. Therefore, the optimum catalyst exhibited a high conversion efficiency of 97.9 %, which was better than that of ZIF-8 (85.4 %).
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