A highly sensitive electrochemical sensor based on nanoflower-like MoS2-Ag-CNF nanocomposites for the detection of VB2

The sensitive determination of VB 2 has broad analytical applications. In this work, a novel VB 2 electrochemical sensor based on the hydrothermal method was constructed to uniformly grow molybdenum disulfide and silver nanoparticles on the surface of electrospun carbon fiber. MoS 2 -Ag-CNF was characterized by scanning electron microscope, EDS spectrum, TEM analysis, cyclic voltammetry, differential pulse voltammetry, and electrochemical impedance spectroscopy. The sensor exhibited a high sensitivity of 0.05 to 40 μΜ with a fast response time and a low detection limit of 0.02 μM. The electrode also showed outstanding selectivity toward various interferences. These results indicate that the MoS 2 -Ag-CNF nanocomposites may be promising electrode materials for electrochemical biosensing. Graphical abstract