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<p>Nitrofurazone, a commonly used nitrofuran antibiotic, is widely applied in antimicrobial therapy as well as in aquaculture and livestock farming. However, its residues can pose risks to human health and cause environmental pollution. Therefore, the development of a highly sensitive detection method for nitrofurazone is of great significance. In this study, a novel core–shell composite material, UiO@TATF COF, was prepared by in situ growing TATF COF on the&#xa0;UiO-66-NH<sub>2</sub> surface through a&#xa0;Schiff-base reaction using 4,4′,4″-(1,3,5-triazine-2,4,6-triyl) tris(benzaldehyde) (TFPT) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as monomers. Subsequently, by further introducing the conductive material carbon black (CB), a novel electrochemical sensor UiO@TATF COF/CB/GCE was successfully constructed. Covalently linked UiO@TATF COF achieves a robust core–shell interface and possesses a large specific surface area and abundant active functional groups. The resultant sensor system exhibits clear synergistic effects, enabling electrocatalysis and sensitive detection toward nitrofurazone in food, environmental, and ointment samples with a detection limit of 0.05&#xa0;µM (<i>S</i>/<i>N</i> = 3).</p> Graphical abstract <p></p>

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An electrochemical sensing platform based on UiO@TATF COF/CB composites for the detection of nitrofurazone

  • 期刊论文

  • 发表日期：

    2026年7月1日

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  • Jia Ren,
  • Hao Guo,
  • Zeyun Yang,
  • Ruixue Yan,
  • Jianpeng Ma,
  • Wenting Niu,
  • Mingyue Wang,
  • Wu Yang

摘要

Nitrofurazone, a commonly used nitrofuran antibiotic, is widely applied in antimicrobial therapy as well as in aquaculture and livestock farming. However, its residues can pose risks to human health and cause environmental pollution. Therefore, the development of a highly sensitive detection method for nitrofurazone is of great significance. In this study, a novel core–shell composite material, UiO@TATF COF, was prepared by in situ growing TATF COF on the UiO-66-NH2 surface through a Schiff-base reaction using 4,4′,4″-(1,3,5-triazine-2,4,6-triyl) tris(benzaldehyde) (TFPT) and 1,3,5-tris(4-aminophenyl) benzene (TAPB) as monomers. Subsequently, by further introducing the conductive material carbon black (CB), a novel electrochemical sensor UiO@TATF COF/CB/GCE was successfully constructed. Covalently linked UiO@TATF COF achieves a robust core–shell interface and possesses a large specific surface area and abundant active functional groups. The resultant sensor system exhibits clear synergistic effects, enabling electrocatalysis and sensitive detection toward nitrofurazone in food, environmental, and ointment samples with a detection limit of 0.05 µM (S/N = 3).

Graphical abstract