FOOD CHEMISTRY
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2025
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IF 9.8
Li Tian,Shuning Yang,Guangping Ma,Pengfei Han,Hanyue Jiang,Wenzhuo Wang,Juan Lu
The electrochemiluminescence (ECL) sensor for detecting oxytetracycline (OTC) was constructed by sequentially modifying luminol@β-cyclodextrin (β-CD) and Ni-MOF@Pt NPs on the electrode surface. In this platform, luminol serves as a luminescent reagent, and Pt NPs serve as co-reaction accelerators of the system. β-CD and Ni-MOF are used as carriers to carry luminol and Pt NPs respectively, and the luminescence intensity was further improved by increasing the carrying capacit. In addition, the OTC quenching strategy is adopted, and the constructed sensor is based on the energy transfer of luminol. Under optimal conditions, this sensor exhibited the linear detection range of OTC was found to be between 2.0 × 10 −12 M to 2.0 × 10 −7 M, with a detection limit of 6.7 × 10 −13 M (S/N = 3). The sensor showed good high selectivity and ultra-sensitivity, and obtained satisfactory results when detecting honey and milk samples.
研究领域:
分析化学
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生物传感
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食品安全检测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
FUEL
·
2022
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IF 8.035
Ruolan Li,Zongqian Wu,Ya Chen,Xingyan Liu,Weiwei Guo,Yumin Huang,Min Fu,Youzhou He
An efficient bifunctional porphyrin-based MOF is fabricated for photocatalytic hydrogen evolution and NO removal, in which the mixed Zr/Ti-oxo clusters are the metal nodes and uniformly distributed Pt nanoparticles (Pt NPs) are the co-catalysts. It is worth noting that the optimal Zr-MOF-s(Pt)(Zr/Ti)-R is obtained through replacing partial Zr(IV) with Ti(IV) in the original Zr-based porphyrin MOFs and in-situ generating confined Pt NPs with a relatively small size within the internal cavities. Compared with the majority of reported Zr-based porphyrin MOFs, the Zr-MOF-s(Pt)(Zr/Ti)-R exhibits an extremely high hydrogen evolution activity (2545.11 μmol·g −1 ·h −1 ) and NO removal rate (46.6 %) under visible light irradiation. The excellent photocatalytic performance should be ascribed to the reason that the mixed Zr/Ti-oxo cluster and the in-situ generated Pt NPs significantly promote the rate of charge transfer and separation. Moreover, the photocatalytic NO oxidation process was also monitored by in - situ DRIFTS, which indicates the Zr-MOF-s(Pt)(Zr/Ti)-R could realize the effective oxidation of NO and intermediates to the final product (NO 3 – ). This work provides us with a practical route to further improve the photocatalytic performance by synergistically modifying the original metal clusters to adjust the ligand-to-metal charge transfer efficiency and in-situ introducing metal nanoparticles to form Schottky junctions.
研究领域:
材料科学
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环境科学
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光催化
✓ 已验证
产品关联
DOI
高影响因子
MICROCHEMICAL JOURNAL
·
2024
·
IF 4.9
Xinyuan Yan,Juan Chai,Luohao Yuan,Hongfeng Yin
Glutathione (GSH), as an significant intracellular antioxidant, plays a vital role in preserving the balance of cellular redox homeostasis. The accurate and sensitive detection of GSH is essential for understanding the cellular redox status and for the diagnosis and treatment of many diseases. Herein, a core–shell structure composed of glucose oxidase (GOx), platinum (Pt) nanoparticles and a zeolitic imidazolate framework (ZIF-8) shell was constructed. Pt NPs in the core–shell showed high peroxidase-like catalytic activity. The as-prepared Pt-GOx@H-ZIF-8 can be utilized for colorimetric detection of GSH, exhibiting a broad linear range from 0.5 to 90 μM, and a low limit of detection (LOD) of 0.4 μM. Pt-GOx@H-ZIF-8 showed excellent sensitivity, selectivity and stability towards glutathione detection, making it a promising candidate for intracellular antioxidants.
研究领域:
分析化学
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生物传感器
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纳米材料
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
FOOD CHEMISTRY
·
2025
·
IF 9.8
Hongbo Li,Hao Wang,Meiyi Cao,Xing Tong,Shuo Wang,Mingfei Pan
The fluoroquinolone-enrofloxacin (ENR) residue in animal-derived foods poses a significant threat to human health, thereby necessitating developing precise, efficient, and user-friendly detection methods. This study developed a dual-mode fluorescence-colorimetric immunosensing platform using the composite of bimetallic nanoparticles integrated with metal-organic frameworks (Au/Pt NPs@NH 2 -MIL-53(Al)). The Au/Pt NPs with biocompatibility and peroxidase-like activity were modified onto fluorescent NH 2 -MIL-53(Al) and conjugated with Ab 2 to construct signal probes. The platform enables dual-mode quantitative analysis through the competitive binding of ENR and ENR-BSA conjugate to signal probes. It demonstrated a wider linear range (0.08–180 ng/mL) and high sensitivity [LOD: 0.068 ng/mL (fluorescence), 0.066 ng/mL (colorimetric), and 0.074 ng/mL (smartphone-assisted color recognition)]. In real sample analyses, the recoveries ranged from 86.7 % to 106.7 %, with satisfactory stability (RSD ≤ 4.4 %, n = 3). The dual-signal mode facilitates results self-calibration, enhancing reliability, while smartphone-assisted color recognition enables on-site, convenient screening, offering great potential for ENR detection in complex food matrices.
研究领域:
食品科学与技术
·
分析化学
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纳米技术
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生物传感器
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环境与健康监测
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）