FOOD CHEMISTRY
·
2025
·
IF 9.8
Fukai Li,Jian Zhou,Kai Li,Min Wang,Mengrui Yang,Ping Gong,Liang Li
Fluoroquinolones are a popular class of antibiotics, which can lead to residues in food and the environment due to their abuse and illegal use. Consequently, this can pose a threat to human health. We hypothesized that a core-shell structured magnetic lanthanide metal–organic framework could serve as an effective dual-mode nanosensor, leveraging its antenna effect and peroxidase (POD)-like activity for the sensitive detection of fluoroquinolones. Herein, a novel Fe₃O₄@EuMOF-based platform was developed to establish a rapid and sensitive fluorescence/colorimetric dual-mode method for detecting fluoroquinolones. The established method demonstrated excellent sensitivity for fluoroquinolones with limit of detections (LODs) of 18.6 nM (fluorescence) and 37.5 nM (colorimetric). Furthermore, this novel method has been successfully applied to detect fluoroquinolones in various food matrix sample with significant recoveries (87.3–107.9 %) and relative standard deviations (RSD) of <8 %. This research provided a sensitive and accurate sensing platform for monitoring fluoroquinolones in various food samples.
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CHEMICAL ENGINEERING JOURNAL
·
2023
·
IF 15.1
Mengdan Ma,Anning Zhou,Tao Hong,Xinyu Jia,Moxuan Liu
Metal-organic frameworks (MOFs) are promising materials for CO 2 adsorption and capture. The unique crystal structure and the open porous structure of MOFs are key factors affecting their CO 2 adsorption performance, but the precise tuning of MOF structures remains a challenge. Herein, we applied the Kamlet-Taft method to investigate the effect of solvent proton-supplying/accepting capaity (β/α parameters) on the structure and CO 2 adsorption performance of Mg-MOF-74 by tuning the reaction solvent polarity. It was found that the ratio of the nucleation rate/growth rate of Mg-MOF-74 could be effectively controlled by adjusting the β/α value of the solvent, realizing the regulation of the crystal structure and morphology of Mg-MOF-74. In addition, the size of solvent molecules played a crucial role in the pore size of Mg-MOF-74. Interestingly, the solvent molecules were competitively coordinated with ligands and participate in the growth of Mg-MOF-74 upon decreasing the β/α value. The crystal structure, morphology and pore size of Mg-MOF-74 could be precisely regulated by the β/α value and molecular size of the reaction solvent, and the highest performing Mg-MOF-74 exhibited a CO 2 adsorption capacity of 7.38 mmol/g.
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CARBON
·
2019
·
IF 7.466
Lulu Chai,Linjie Zhang,Xian Wang,Leqiong Xu,Cheng Han,Ting-Ting Li,Yue Hu,Jinjie Qian,Shaoming Huang
The search on low-cost, ultra-stable, and high-performance non-novel metal replacements to the Pt-based catalysts for oxygen reduction reaction (ORR) is of great urgency. Herein, a bottom-up method has been proposed to synthesize unique hollow N-doped carbon spheres (HNCSs) from an initial amorphous coordination polymer (CP) template-assisted route for the first time. HNCSs exhibit competitively comparable high electrocatalytic ORR activity, excellent reaction selectivity , and stronger long-term stability and negligible methanol crossover effect compared to the commercial Pt/C under the alkaline medium . Together with the other two reported carbonaceous ORR catalysts, including SCSs and NGPCs , our HNCSs possess the lowest Tafel slope of 65.7 mV dec −1 which is close to Pt/C (62.6 mV dec −1 ), and show much enhanced ORR activity (J L = 5.34 mA cm −2 ) and stability (Retention = 96.5%, Time = 10 h). This CP-templated route for hollow carbon materials will shed light on a new synthetic strategy to prepare high-performance carbon-based and/or metal-free ORR catalysts.
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CERAMICS INTERNATIONAL
·
2019
·Vol. 45
·期 14
·17216-17223
·
IF 3.45
Yun-Peng Liu,Xiao-Han Qi,Le Li,Shi-Hang Zhang,Teng Bi
To obtain a battery-type ceramic electrode material for supercapacitors , we used a metal-organic framework (HKUST-1) as a template to prepare ceramic material Cu 9 S 8 @C. Firstly, we adopted the calcination–vulcanization method to synthesize Cu 9 S 8 @C. Then we deposited it onto a carbon fiber cloth and employed it. Moreover, polypyrrole PPy/Cu 9 S 8 @C-CC nanocomposite electrodes were prepared via electrochemical deposition . By means of high-temperature calcination and vulcanization , the copper atoms of HKUST-1 were successfully transformed into Cu 9 S 8 nanoparticles , and the organic ligand was carbonized into amorphous carbon in Cu 9 S 8 @C. The results showed that the PPy/Cu 9 S 8 @C-CC electrode presented a specific capacitance of 270.72F/g at a scan speed of 10 mV/s in a 1 M KCL aqueous solution. This value was much higher than that of Cu 9 S 8 @C-CC and Cu 9 S 8 -CC electrodes, as confirmed by the results of electrochemical test. At a scan rate of 10 mV/s, the capacitance retention rate for PPy/Cu 9 S 8 @C-CC after 3000 cycles was 80.36%, indicating its superior cycle characteristics. Moreover, PPy/Cu 9 S 8 @C-CC exhibited good frequency response. These results indicate that PPy/Cu 9 S 8 @C is an ideal electrode material for energy storage and conversion applications.
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MATERIALS & DESIGN
·
2026
·
IF 8.2
Xuanxuan Zhang,Zhigang Hua,Kaibin Xie,Sheng Zhong,Wen Chen,Duanping Sun,Jian Lin,Heng Duan
Thermosensitive hydrogel enables sustained vancomycin release for infected wounds. • Chitosan hydrogels, quasi-MOF, and vancomycin form a triple-action antibacterial system. • The hydrogel achieves > 99.9 % antibacterial efficacy against both resistant pathogens. • The hydrogel accelerates wound healing via inflammation reduction and tissue regeneration. Effective clinical management of infected wounds remains challenging due to the transient efficacy and resistance-inducing nature of conventional antibiotics. Multifunctional dressings capable of sustained drug release and microenvironment modulation are urgently needed. Herein, we present a smart thermosensitive hydrogel based on metal–organic framework nanozymes and an antibacterial agent, integrating vancomycin-loaded quasi-MIL-53 (Van@QMIL-53) into a biocompatible chitosan network to form a synergistic triple-action antibacterial system (VQCG). QMIL-53 exhibits enhanced catalytic activity and drug-loading capacity. The chitosan matrix enables sustained drug release and provides ideal wound management properties, including thermosensitivity, excellent swelling capacity, antioxidant activity, and skin adhesion. In vitro, the hydrogel demonstrates potent antibacterial activity against P. aeruginosa and methicillin-resistant S. aureus ( MRSA ). In vivo, its therapeutic efficacy was evaluated in a murine model of wounds co-infected with MRSA and P. aeruginosa. The hydrogel significantly accelerated wound healing by simultaneously eradicating pathogens, scavenging excess reactive oxygen species, and alleviating inflammation, as evidenced by downregulated Tumor Necrosis Factor-alpha (TNF-α) and upregulated Arginase-1 (Arg-1) expression. This work establishes a versatile MOF-hydrogel platform, offering a promising strategy for advanced wound dressings that synergistically address infection, oxidative stress, and tissue repair. Download: Download high-res image (151KB) Download: Download full-size image
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DALTON TRANSACTIONS
·
2022
·Vol. 52
·期 2
·376-383
·
IF 4.569
Enming Ping,Lingyun Kong,Mengyao Liu,Yunshan Zhou,Lijuan Zhang,Nan Chen
The reaction of porous γ-Al2O3 particles acting as both a sacrificial template and an aluminum source with 1,4-naphthalene diacid (H2NDC) resulted in the formation of γ-AlOOH@Al(OH)(1,4-NDC) composites, in which ZIF-67 was then loaded by the in situ crystallization method, leading to the formation of γ-AlOOH@Al(OH)(1,4-NDC)@ZIF-67 composites. The deliberately designed composite was used to separate H2/D2 at 77 K in a 1 m chromatographic column. The results demonstrated that the optimized composite can achieve the effective separation of H2/D2 in gas chromatography due to the additive effects of kinetic sieving and chemical affinity quantum sieving of Al(OH)(1,4-NDC) and ZIF-67. By optimizing chromatographic separation conditions, the resolution R reached 2.02 with the separation time t = 7.72 min. The composite also showed satisfactory repeatability and reproducibility.
研究领域:
材料科学
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分离科学
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物理化学
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纳米材料
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能源化学
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Sustainable Materials and Technologies
·
2026
·
IF 9.7
Yu He,Weiliang Xiong,Xiang Li,Rongjie Zeng,Guosheng Shao,Peng Zhang,Yige Zhao
Metal-organic frameworks (MOFs) are generally considered as attractive precursors to fabricate metal compound/carbon hybrid in the electrocatalysis field. However, applying multi-metallic MOFs as direct electrocatalysts have received limited attention. In this study, a two-dimensional medium-entropy quaternary MOF (NiCoFeMo-MOF) and comparative ternary MOF (NiCoFe-MOF, NiCoMo-MOF, and NiFeMo-MOF) materials are successfully fabricated via a one-step room-temperature ultrasonication method. These MOFs all exhibit a sheet-like morphology with homogeneous elemental distribution. Electrochemical results demonstrate that quaternary NiCoFeMo-MOF shows more superior oxygen evolution reaction (OER) performance compared to the other ternary MOFs and commercial RuO 2 catalysts. The performance enhancement primarily stems from the electronic synergy within the multi-metal system, in which Ni site forms a local electronic environment that is favorable for stabilizing the *OOH intermediate, thereby effectively reducing the reaction barrier for OER. Furthermore, NiCoFeMo-MOF also displays excellent hydrogen evolution reaction (HER) activity at high current densities, and the overall water-splitting electrolyzer assembled with NiCoFeMo-MOF outperforms the corresponding commercial Pt/C||RuO 2 system. This work provides a feasible route for the facile preparation of medium entropy MOF materials and opens a new pathway for developing advanced non-noble-metal electrocatalytic materials.
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FOOD CHEMISTRY
·
2026
·
IF 10.4
Qingyi Wei,Xiaojian Fei,Hongbin Pu
Allyl isothiocyanate (AITC) was effectively encapsulated within HKUST-1. • HKUST-1@AITC exhibits a humidity-responsive release mechanism. • The vapor released from HKUST-1@AITC inhibits microbial growth. • HKUST-1@AITC significantly prolonged the shelf life of strawberries. Allyl isothiocyanate (AITC), a volatile compound predominantly found in mustard essential oil, has attracted significant attention as a potent natural antimicrobial agent for postharvest preservation of horticultural products. However, its high volatility, hydrophobicity, and pungent odor limit its application. In this study, a water-unstable metal–organic framework, HKUST-1 (MOF-199), was fabricated using a solvothermal method and functioned as a carrier of AITC. AITC was successfully encapsulated into HKUST-1 via impregnation, yielding HKUST-1@AITC with excellent humidity-responsive release behavior. As the relative humidity (RH) increased from 43% to 98%, the cumulative release rate of AITC rose from 41.06% to 54.82%. Moreover, HKUST-1@AITC and vapor-phase diffusion of AITC released from HKUST-1@AITC have shown to exhibit superior antibacterial activity. Application in strawberries showed that HKUST-1@AITC reduced weight loss by 25.05%, alleviated firmness loss by 39.89%, and effectively extended the storage duration to 7 days. Overall, HKUST-1@AITC shows potential use in active packaging to improve preservation of horticultural products.
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MICROCHEMICAL JOURNAL
·
2026
·
IF 5.2
Yu Gan,Wenwen Lai,Mengbo Fan,Zhengchao Duan,Lianzhi Wang
A novel core–shell structured NH 2 -MIL-88(Fe)@TFPT-Tt-COF composite was successfully constructed via an in situ growth strategy, enabling intimate interfacial bonding and synergistic effects between the MOF core and the COF shell. • The composite exhibits dramatically enhanced fluorescence compared to the individual MOF or COF, and acts as a “turn-off” sensor for nitrofurantoin (NFT) with an ultralow detection limit of 0.18 μg·mL −1 based on the inner filter effect. • The sensing platform features rapid response (equilibrium within 1 min), excellent selectivity against common metal ions and antibiotics, and good applicability in real samples with recoveries of 84.3%–107.6% in soil and lake water. • Offers a new strategy for applying MOF@COF heterostructures to the on-site, rapid, and sensitive detection of trace antibiotic residues in complex environmental matrices. A core-shell structured NH 2 -MIL-88(Fe)@TFPT-Tt-COF composite was successfully constructed via an in situ growth strategy, using NH 2 -MIL-88(Fe) as the core and TFPT-Tt-COF as the shell. The structure, morphology, and thermal stability of the composite were systematically characterized by Fourier transform infrared spectroscopy, powder X-ray diffraction, scanning/transmission electron microscopy, thermogravimetric analysis, and nitrogen adsorption–desorption measurements. The results confirmed the intimate interfacial bonding between the MOF core and the COF shell. Compared with the individual components, the composite displayed significantly enhanced fluorescence intensity. A fluorescent sensing platform based on this composite was developed, which enabled highly sensitive and selective detection of nitrofurantoin (NFT). Preliminary mechanistic studies revealed that the quenching effect mainly originated from a photoinduced electron transfer (PET) mechanism. The proposed method was applied to the spike recovery analysis of NFT in real samples such as soil and lake water, yielding recoveries ranging from 84.3% to 107.6%, with a limit of detection as low as 0.18 μg·mL −1 , demonstrating that the sensor possesses satisfactory accuracy and practicality in complex environmental matrices. This work provides a new strategy for the application of MOF/COF composites in the rapid detection of antibiotic residues in the environment. Download: Download high-res image (167KB) Download: Download full-size image
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Molecular Catalysis
·
2026
·
IF 4.3
Xinyu Fu,Yufei Zhang,Yang Xu,Danjun Jin,Jinghuan Chen,Jiade Wang
Amino-ligand-assisted MOF derivation forms hierarchical Pt@CeO 2 microspheres. • -NH 2 groups anchor Pt species, preventing aggregation and maintaining pores. • The catalyst shows exceptional toluene oxidation, achieving a low T 90 of 177 °C. • In situ DRIFTS elucidates a sequential Mars-van Krevelen oxidation pathway. A novel amino-ligand-assisted MOF-derivation strategy was developed to fabricate hierarchically structured Pt@CeO 2 microspheres with highly dispersed Pt species (0.34 wt. %). The -NH 2 functional groups effectively anchored Pt precursors, preventing aggregation and preserving hierarchical porosity during calcination. The resulting catalyst exhibited exceptional toluene oxidation performance, achieving T 50 and T 90 values of 155 and 177 °C, respectively, significantly outperforming conventional impregnation-derived counterparts. Characterization revealed abundant surface oxygen vacancies, enhanced Ce 3+ concentration, and superior low-temperature reducibility due to strong metal-support interaction. In situ DRIFTS analysis confirmed a Mars-van Krevelen mechanism with sequential degradation pathway: toluene → benzyl alcohol → benzaldehyde → benzoate → anhydride → CO 2 and H 2 O. The superior catalytic performance arises from the synergistic effects of the hierarchically oriented mesoporous structure, inherently enlarged specific surface area, and the highly dispersed active Pt species confined within the CeO 2 matrix. This work establishes a versatile platform for designing high-performance catalysts with controlled metal dispersion and hierarchical porosity for VOC abatement and oxidation reactions. Download: Download high-res image (202KB) Download: Download full-size image
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ADVANCED FUNCTIONAL MATERIALS
·
2026
·
IF 19.9
Junhan Li,Chao Zhou,Shujia Wang,Jingwen Xu,Zhida Gao,Yong Zhang,Yan-Yan Song
Metal–organic frameworks (MOFs) offer unique chemical selectivity for surface-enhanced Raman scattering (SERS), yet their intrinsically weak light–matter coupling fundamentally limits sensitivity and has long hindered their practical deployment as plasmon-free SERS substrates. Here, we report a photonic-crystal strategy that fundamentally amplifies charge-transfer (CT)-mediated SERS in MOFs by exploiting slow photons at the photonic stop-band edge. Using UiO-66(Zr) nanocrystals as the model MOF, the assembled ordered MOF photonic crystals (PhCs) with tunable Bragg reflection are precisely aligned to the excitation wavelength. The resulting slow-light effect dramatically increases photon residence time and local electromagnetic field within the MOF pore domains. This slow-photon confinement synergistically couples with CT processes between MOFs and analyte molecules, resulting in a tenfold enhancement in SERS intensity compared with disordered MOF assemblies and an enhancement factor up to 5.15 × 10 8 without any plasmonic components. By leveraging the intrinsic band-structure tunability of MOFs, selective CT-SERS is further demonstrated across different molecular systems and environments. The optimized MOF-PhCs substrate enables ppb-level detection and multicomponent discrimination of lung-cancer-associated volatile organic compounds, which are digitally encoded into machine-readable Raman barcodes. This work establishes slow-photon-regulated MOF photonic crystals as a versatile platform for plasmon-free, chemically programmable, and functionally integrated SERS sensing.
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MOLECULES
·
2026
·Vol. 31
·期 16
·2759
·
IF 5.1
Panpan Liu,Peijun He,Yixin Wu,Xiufang Li,Xianmang Xu,Jianing Duan,Peng Bai
In this study, we prepared a magnetic University of Oslo-66 (UiO-66) composite material, Fe 3 O 4 @SiO 2 @UiO-66, and applied it as an adsorbent for the effective removal of benzoic acid from wastewater. The resulting magnetic MOF composite retained the structural and property characteristics of MOFs, along with magnetic separation capabilities, allowing for swift recovery from water through external magnetic fields. A potential synergistic effect between magnetic particles and UiO-66 was observed, leading to enhanced benzoic acid adsorption. The adsorption capacity per Zr 6 cluster unit in Fe 3 O 4 @SiO 2 @UiO-66 measured 569.5 g/mol, surpassing that of UiO-66 by more than 26%. We conducted investigations into adsorption properties as a function of initial concentration, contact time, and pH values. The adsorption of magnetic UiO-66 composites was well described by pseudo-second-order and Langmuir models, indicating predominant chemisorption on the homogeneous surface. Thermodynamic studies of adsorption revealed a spontaneous exothermic process. Furthermore, we analyzed possible mechanisms of benzoic acid adsorption, highlighting the contributions of electrostatic interactions, coordination interactions, and π–π stacking interactions. Magnetic UiO-66 exhibited remarkable adsorption capacity, along with reliable regeneration performance and convenient magnetic separation capabilities, making it an exceptional adsorbent for industrial applications in the removal of benzoic acid.
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