Abstract
A novel highly selective nanocomposite MnTMPyP/TaMoO6 was successfully synthesized and developed for simultaneous detection of Ascorbic acid (AA) and dopamine (DA). Firstly, the host material LiTaMoO6 was synthesized by the high temperature solid phase method. After the exfoliation/restacking process of the host material, the nanocomposite was formed through electrostatic self-assembly. The structure and morphology were characterized using X-ray diffraction (XRD), scanning electron microscope (SEM), transmission electron microscope (TEM), energy dispersive spectrometer analysis (EDS), ultraviolet-visible (UV–vis) and Fourier transform infrared spectrometer (FTIR). And the electrochemical behaviors of the modified electrode were further explored by cyclic voltammetry (CV), electrochemical impedance analysis (EIS), and differential pulse voltammetry (DPV). Under the optimal conditions, the MnTMPyP/TaMoO6 provides a high sensitivity and selectivity in detecting AA and DA with linear response ranges of 12–674 μM. The resulting detection limit is also calculated as 0.97 and 0.54 μM, respectively. In addition, the MnTMPyP/TaMoO6 nanocomposite exhibits excellent stability, reproducibility, and good anti-interference.
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