Construction of cobalt porphyrin/tantalum molybdate nanocomposite for simultaneous electrochemical detection of ascorbic acid and dopamine
Source abstract
Abstract
A simple and rapid exfoliation/reassembling method was developed to fabricate the CoTMPyP [5, 10, 15, 20-tetrakis (N-methylpyridinium-4-yl) porphyrinato cobalt (III)]/TaMoO6 (tantalum molybdate) nanocomposite. X-ray diffraction, scanning electron microscope, transmission electron microscope, energy dispersive spectroscopy, UV–vis absorption, and Fourier transform infrared were performed to characterize the composition and morphology of CoTMPyP/TaMoO6 nanocomposite. The electrochemical sensor based on CoTMPyP/TaMoO6 nanocomposite-modified glassy carbon electrode (CoTMPyP/TaMoO6/GCE) can be successfully used for simultaneous detection of ascorbic acid (AA) and dopamine (DA). The electrocatalytic activity of CoTMPyP/TaMoO6/GCE toward AA and DA was evaluated by using cyclic voltammetry and differential pulse voltammetry. The linear calibration plots for AA and DA were obtained over the range of 0.22 to 2.11 mM and 0.11 to 1.16 mM with detection limits (S/N = 3.0) of 28 and 11 µM, respectively. Moreover, the multifunctional electrochemical sensor was advantageous in terms of its good selectivity, sensitivity, stability, reproducibility, and anti-interference capability.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Electrochemical sensors and biosensors · Conducting polymers and applications · Electrochemical Analysis and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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