Construction of cobalt porphyrin/tantalum molybdate nanocomposite for simultaneous electrochemical detection of ascorbic acid and dopamine
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)]/TaMoO 6 (tantalum molybdate) nanocomposite. X-ray diffraction, scanning electron microscope, transmission electron microscope, energy...
Gespeichert in:
Veröffentlicht in: | Journal of materials research 2021-03, Vol.36 (4), p.916-924 |
---|---|
Hauptverfasser: | , , , , , , , , |
Format: | Artikel |
Sprache: | eng |
Schlagworte: | |
Online-Zugang: | Volltext |
Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
Zusammenfassung: | 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)]/TaMoO
6
(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/TaMoO
6
nanocomposite. The electrochemical sensor based on CoTMPyP/TaMoO
6
nanocomposite-modified glassy carbon electrode (CoTMPyP/TaMoO
6
/GCE) can be successfully used for simultaneous detection of ascorbic acid (AA) and dopamine (DA). The electrocatalytic activity of CoTMPyP/TaMoO
6
/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.
Graphic abstract |
---|---|
ISSN: | 0884-2914 2044-5326 |
DOI: | 10.1557/s43578-021-00139-z |