FOOD CHEMISTRY
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2020
·
IF 6.306
Xiong-Xin Peng,Guang-Ming Bao,Yu-Fei Zhong,Li Zhang,Kang-Bo Zeng,Jia-Xin He,Wei Xiao,Yi-Fan Xia,Qing Fan,Hou-Qun Yuan
Thiabendazole (TBZ), has been extensively employed as a pesticide and/or a fungicide in agriculture, while its residues would threaten to public health and safety. Simple, rapid and sensitive probes for detection of TBZ in real food samples is significantly desirable. In present work, a highly selective and sensitive luminescent sensor for monitoring TBZ in oranges has been constructed based on a Tb 3+ -functionalized Zr-MOF (Tb 3+ @ 1 ). Tb 3+ @ 1 exhibited many attractive sensing properties toward TBZ, including broad linear range (0–80 μM), high selectivity, low LOD (0.271 μM) and rapid response time (less than1 min). Moreover, the probe was employed to determine TBZ in real orange samples, in which good recoveries from 98.41 to 104.48% were obtained. It only takes 35 min for the whole process of detection TBZ in real orange samples combined with QuEChERS method. Therefore, this work provided a reliable and rapid method for monitoring the TBZ in real orange samples.
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高影响因子
ANALYST
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2025
·
IF 3.3
Chenyao Lin,Qiaoping Wu,Menglu Mao,Xuedan Qiu,Chuanfan Ding,Yinghua Yan,Dumei Ma,Qingcao Li
The global rise of carbapenemase-producing Klebsiella pneumoniae (CPKP) poses a major threat to public health due to its high morbidity and mortality rates, driven largely by the production of carbapenemase enzymes. Rapid and accurate detection of carbapenemase activity is crucial for guiding appropriate antimicrobial therapy and controlling nosocomial transmission. Matrix-assisted laser desorption/ionization time-of-flight mass spectrometry (MALDI-TOF MS) enables direct detection of carbapenem hydrolysis but is currently limited by the drawbacks of conventional organic matrices, such as high background interference, toxic solvents, and poor reproducibility. In this study, we report a novel nanocomposite matrix, GNP@Zn–Cu/MOF@Au, synthesized via a green, aqueous-phase method without toxic reagents or extreme conditions. This heterostructured material exhibited a large mesoporous surface area, excellent UV absorption, and thermal responsiveness, which enhanced signal intensity, reproducibility, and analytical sensitivity, significantly improving MALDI-TOF MS performance. When applied to the identification of carbapenemase activity in clinical CPKP isolates, the matrix achieved 100% sensitivity and specificity after 1 hour of incubation and 97.3% sensitivity after just 15 minutes. Notably, KPC-2-producing strains were detected with full sensitivity within 15 minutes, while extended incubation enabled reliable identification of low-activity enzymes such as OXA-48. These findings demonstrate the strong potential of GNP@Zn–Cu/MOF@Au as a reliable and sustainable alternative to conventional matrices for rapid and accurate detection of carbapenemase activity in clinical diagnostics.
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高影响因子
FUEL
·
2025
·
IF 7.5
Shengjiao Wen,Ruiying Wang,Xingchao Wang,Mengran Lou,Yang Wang,Yuhu Feng,Alex Trukhanov,Zhipeng Sun,Xia Kong
The strategic design of effective and low-cost catalysts plays a crucial role in advancing hydrogen evolution reaction (HER) in electrocatalytic water splitting. The integration of non-precious metal catalysts through a cooperative bimetallic compound strategy is crucial as an alternative to conventional precious metal-based materials. Transition metal carbides (TMCs) and nitrides (TMNs) exhibit Pt-like electronic configurations, demonstrating high potential as electrode catalysts for HER. Herein, Co 2 N/Co 3 W 3 C/coal-based carbon fibers (Co 2 N/Co 3 W 3 C/C-CFs) was synthesized via electrospinning and pyrolysis processes with the presence of polyoxometalate-based metal–organic framework (POMOF) of PW 12 -ZIF-67 as a precursor, and urea as a nitrogen source. The small-sized PW 12 -ZIF-67 allowed a better match with the diameters of C-CFs. The synergistic interaction between Co 2 N and Co 3 W 3 C effectively modulated the electronic structure and facilitated rapid charge transfer, endowing the composite with exceptional HER activity. Additionally, the flexible C-CFs not only effectively prevented agglomeration of Co 2 N/Co 3 W 3 C nanoparticles but also acted as self-supporting electrode. Notably, the Co 2 N/Co 3 W 3 C/C-CFs composite exhibited outstanding HER activity, achieving an overpotential of 92 mV at a current density of 10 mA cm −2 in 0.5 M H 2 SO 4 . This study achieves the successful conversion of coal into high-performance carbon materials and provides a feasible strategy for developing efficient HER catalysts based on POMOF-derived non-precious metal compounds.
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高影响因子
FUEL
·
2025
·
IF 7.5
Shiyun Xiao,Yuchen Wu,Xue Luo,Tianrun Hu,Zeyu Deng,Shaoyuan Guo,Hualan Zhou,Shengkang Wang,Xuesong Wang
The development of highly active catalysts and catalytic systems is crucial for the efficient valorization of lignin biomass. In this paper, a defective CoNi bimetallic MOF-303 catalyst was synthesized by adjusting the thermal reduction temperature and bimetallic ratio, demonstrating efficient catalytic performance in the aqueous-phase hydrodeoxygenation (HDO) of vanillin to produce 2-methoxy-4-methylphenol (MMP). Under mild conditions (200 °C, 2 h, 0.5 MPa H 2 ), the Co 2 Ni 1 /M 460 catalyst achieves complete conversion of vanillin with an MMP yield of 90.42 %. Additionally, the catalyst exhibited high activity in the aqueous-phase HDO of lignin and other lignin-derived/model compounds. Remarkably, facilitated the depolymerization of lignin into low-molecular-weight aromatic compounds, predominantly MMP, via secondary catalysis (8 h). Characterization analyses revealed that the high activity of Co 2 Ni 1 /M 460 stems not only from its defect-induced large pores, which enhance substrate adsorption and active site availability, but also from the synergistic effects between the CoNi alloy and the MOF-303 framework (Co-N interaction), promoting C=O group activation and efficient HDO. This work presents a viable strategy for designing sustainable and efficient lignin catalytic systems, highlighting the promising catalytic potential of MOF-303.
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高影响因子
Communications Chemistry
·
2025
·Vol. 8
·期 1
·389
·
IF 6.2
Han Lei,Tan Jingying,Zhang Yucui
Given the promising prospect of nanozymes in colorimetric test strips, it is essential to eliminate the interferences of their multi-activities and various colors on the test strip. Here, white Mn-based metal-organic frameworks (Mn-MOFs) with ultrathin 2D morphology (3 nm thick) were successfully synthesized by a simple ultrasonic approach. The origin of the white optical property in Mn-MOFs was systematically investigated, revealing that it stems from specific metal-ligand coordination polymerization rather than morphological features or defect states. Mn-MOF nanozymes possessed exclusive peroxidase-mimicking activity rather than oxidase-like activity, effectively resisting O 2 interference during colorimetric assay. Moreover, Mn-MOF nanozymes displayed unique substrate selectivity without additional modification. Unlike other colored nanozymes, the whiteness of Mn-MOF nanozymes enhanced the paper’s whiteness, boosting contrast for colorimetric detection on test strip. This study pioneers a systematic investigation into the origin of whiteness in MOF nanozymes. The coordination-defined properties enable interference-free optical design and O 2 -resistant on-site detection.
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高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
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2025
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IF 4.9
Meng Cheng,Mengyao Hua,Siyi Wang,Yuhang Duan,Lei Xu,Yafen Zhou
TiO 2 and its composites have drawn extensive focus from researchers on account of their ability to convert formaldehyde into harmless H 2 O and CO 2 under light irradiation at room temperature, along with their low toxicity, simple operation, low cost and reusability. In this study, a MOF@Fe 3 O 4 –TiO 2 photocatalyst with synergistic degradation effects was synthesized via ultrasonic-assisted impregnation method and comprehensively characterized. Results show that this composite can efficiently remove formaldehyde through its self-established adsorption-degradation-reabsorption cycle (85.50 % within 5.5 h; 92.60 % within 24 h). Moreover, it exhibits enhanced transient photocurrent, which not only facilitates the segregation of electrons and holes across Fe 3 O 4 –TiO 2 heterostructure but also promotes generation and transport of photogenerated electrons between the Fe 3 O 4 –TiO 2 heterojunction and MOF, endowing the catalyst with excellent conductivity and full-spectrum-driven photocatalytic activity. Additionally, EPR and stability tests reveal that the composite decomposes formaldehyde to carbon dioxide and water through formation of two reactive oxygen species (•O 2 − and •OH) and demonstrates good stability.
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SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2025
·
IF 4.6
Xiulian Yin,Yingjin Li,Xiangfen Xue,Mingjie Wei,Yuxin Xiao,Xianjin Qin,Fan Zhang,Chunmei Li,Qinghua Cao
Detecting pollutants such as electrically neutral aromatic amines in environmental water bodies is a challenging endeavor. Sensing array technique, especially MOF-based fluorescence sensor array, has become the preferred approach due to the unique advantages of MOF sensing elements in providing multiple recognition sites and the multi parameter advantages of fluorescence properties. The multidimensional advantages provided by these features should be further explored and utilized. However, the current optimization efforts are primarily focused on the selection of sensor types, and the methods of signal acquisition and data analysis have not yet received much attention. In this study, we used 3D full range fluorescence scanning to obtain three-dimensional sensing signals and made the quantitative analysis method work best for this kind of information. Three distinct phases of the optimization were conducted taking three non-fluorescent isomers, o-nitroaniline, p-nitroaniline, and m-nitroaniline as detection targets. Initially, based on the internal filtering effect (IFE) sensing mechanism, Zn-MOF-74 was selected and synthesized as the sensor. The optimal dosage was determined and the stability was further investigated. Secondly, signal acquisition was achieved with excitation-emission matrix (EEM) to construct a virtual sensor array (VSA). Thirdly, the qualitative PCA-SVM (principal component analysis-support vector machine) model and quantitative PCA-LUT (lookup table) model, which combine two-stage nonlinear fitting with interpolation, were formulated using the first three principal components as features. The research results suggest that the classification accuracy of a single sample is 97.7 %, binary mixed samples is 76.2 %. And this method also shows good detection results for tap and river water samples. Especially, the PCA-LUT has a stable performance in predicting all three compounds with significantly better MAE and MSE and high analysis efficiency. Compared with neural network method, the advantage of PCA-LUT is that it can be used for limited calibration samples and the analysis process is intuitive with good interpretability. This study provides a construction and optimization case for the fluorescence sensing array method, covering the entire process from sensor selection, signal acquisition to data processing method.
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高影响因子
ELECTROCHIMICA ACTA
·
2025
·
IF 5.6
Linghui Tang,Yue Wang
Hydrogen peroxide (H₂O₂) is a widely used oxidizing agent in industrial processes, and a 3 wt% aqueous solution is commonly employed as a disinfectant. In this study, a metal–organic complex (DHTPN) was synthesized via a one-step coordination reaction between 2,5-dihydroxyterephthalic acid (DHTP) and NiCl₂. The resulting complex exhibits a fine-tuned lattice structure resembling MOF-74(Ni) and was comprehensively characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM), Fourier-transform infrared spectroscopy (FTIR), and X-ray photoelectron spectroscopy (XPS). When immobilized onto a glassy carbon electrode, the DHTPN-modified electrode functioned as an efficient electrochemical sensor for H₂O₂ detection. Under optimized conditions, the sensor exhibited a broad linear detection range from 10 μM to 13.32 mM and an ultralow detection limit of 3.3 μM. In addition, the device demonstrated excellent selectivity, reproducibility, and operational stability, along with a rapid response time of 3.5 s. Furthermore, the sensor was successfully applied to the quantitative analysis of commercial 3 wt% H₂O₂ disinfectant without any sample pretreatment, yielding accurate and reliable results. This work highlights the potential of metal–organic complexes as advanced electrode materials in electroanalytical chemistry and provides a promising platform for rapid, sensitive, and efficient H₂O₂ detection.
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高影响因子
TALANTA
·
2025
·
IF 6.1
Xiang-Yi He,Qian-Wen Shen,Chao-Jie Zhu,Shuo Hao,Kai-Yu Tan,Qing Li
This study presents a novel crosstalk-free dual-mode biosensing platform based on a single cerium-incorporated metal-organic framework (UiO-66-NH 2 (Ce)) for sensitive detection of α-glucosidase activity and inhibitor screening. Unlike traditional dual-mode systems affected by signal interference, this monolithic MOF platform intrinsically produces orthogonal colorimetric and fluorescent responses. Upon α-glucosidase-mediated generation of hydroquinone, simultaneous signal transduction occurs through independent pathways: colorimetric attenuation via suppression of the oxidase-like catalytic process, and fluorescence recovery due to ligand-to-metal charge transfer modulation. Rigorously optimized for clinical application, the platform achieves ultra-low detection limits of 0.0166 U/L in colorimetric mode and 0.0094 U/L in fluorescent mode, surpassing existing methods. The platform demonstrates selectivity against potential interferents and successfully quantifies α-glucosidase in human serum with satisfactory recovery rates. Furthermore, the system facilitates precise inhibitor screening with IC 50 values of 8.13 μM for fluorescence-based detection and 10.06 μM for colorimetric detection of acarbose. By integrating self-validating detection and drug evaluation within a single-material architecture, this work establishes a paradigm for designing robust MOF-based biosensors equipped with built-in cross-validation capabilities.
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高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Zongli Liu,Tian Wang,Pu Chang,Lixiu Guan,Xiaohu Wang,Chao Xu,Yingxuan Cao,Junguang Tao
Although electrocatalytic water splitting is a very promising and sustainable method for generating hydrogen as a clean energy source, the design and synthesis of stable and efficient noble metal-free catalysts faces some serious challenges. In this work, an electrocatalyst with heterostructure of MoS 2 and orthogonal phase of CoSe 2 (MoS 2 @o-CoSe 2 ) is derived from Co-based metal organic framework (Co-MOF). The complex shows excellent hydrogen evolution reaction (HER) activity and long-term stability in alkaline medium attributed to its porous structure , ultrathin nanosheet morphology, synergistic effect of each component owing to the tightly bonded interface and optimal electronic structure after phase transition. MoS 2 @o-CoSe 2 exhibits low overpotential of 34 mV at a current density of 10 mA cm −2 and a Tafel slope of 41 mV dec −1 . These results are superior to most recently reported Mo-based and Co-based electrocatalysts. Importantly, the performance of MoS 2 @o-CoSe 2 at high current densities is even better than that of commercial Pt/C electrode. Our results emphasize the importance of phase engineering and show that the combination of MOF with transition metal disulfides is an effective way to develop highly active and sustainable efficient electrocatalysts for water hydrolysis.
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BIOSENSORS & BIOELECTRONICS
·
2017
·
IF 7.78
Fuxian Cai,Qinghua Wang,Xiaoqian Chen,Weiwei Qiu,Fengping Zhan,Fei Gao,Qingxiang Wang
A nanocomposite of flake-shaped manganese-terephthalic acid MOF/single-walled carbon nanotubes (Mn(TPA)-SWCNTs) was synthesized using manganese chloride, terephthalic acid and SWCNTs as raw materials. Theoretical modeling study shows that the Mn(TPA) component has stronger adsorption ability to lead ion (Pb 2+ ) than the other common heavy metal ions , which is in good agreement with the result of electrochemical assay. Then, the Mn(TPA)-SWCNTs were used as a sensing matrix for the voltammetric determination of Pb 2+ . The results displayed that the sensor shows high analytical performance for Pb 2+ due to the synergy of Mn(TPA) with highly selective binding to Pb 2+ and SWCNTs with high electronic conductivity . Under the optimal conditions, the Mn(TPA)-SWCNTs-based electrochemical sensor presented a wide linear response over the concentration range from 0.10 to 14.0 μM. The limit of detection was achieved to be 38 nM. Satisfactory results were also achieved when the Mn(TPA)-SWCNTs-based sensor was utilized for the determination of Pb 2+ in the practical samples of industrial wastewater and human serum, suggesting great promising of the sensor for practical application.
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高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2020
·Vol. 412
·期 4
·849-860
·
IF 3.637
Huang Xiaozhou,Huang Dihui,Chen JinYang,Ye Ruihong,Lin Qian,Chen Sheng
In this paper, a novel bimetallic Ce-Ni metal-organic frameworks (Ce-Ni-MOF) are synthesized by hydrothermal reaction, using 1,3,5-benzenetricarboxylic acid as a ligand. In particular, the bimetallic Ce-Ni-MOF with the largest specific surface area and catalytic sites was synthesized when the molar ratio of Ce 3+ to Ni 2+ was 3:7. Bimetallic Ce-Ni-MOF is added to the traditional conductive material of multiwall carbon nanotubes (MWCNTs) to play their synergistic effect, improve the conductivity, specific surface area, and catalytic site of the MWCNTs. A novel bisphenol A (BPA) sensor was successfully prepared by a self-assembled multilayer strategy of Ce-Ni-MOF/MWCNTs modified glassy carbon electrodes (GCE). Field emission scanning electron microscopy, powder X-ray diffraction, and transmission electron microscope were carried out to characterize the Ce-Ni-MOF/MWCNTs. Cyclic voltammetry (CV) and differential pulse voltammetry (DPV) were used as a sensitive analytical method for the determination of BPA, and a wider linear dynamic range of BPA determination in 0.1 μmol·L −1 to 100 μmol·L −1 with a detection limit of 7.8 nmol·L −1 (S/ N = 3). The proposed method was applied to measure the content of BPA in different brands of drinking water with satisfying recovery from 97.4 to 102.4%.
Graphical abstract
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危险品化学品经营许可证（带存储）