Abstract
In this research, bimetallic nickel-zirconia supported on mesoporous nanoparticles (Ni-Zr/MSN) were successfully synthesized by a simple in situ electrolysis method. Ni-Zr/MSN were well-characterized by Fourier transform infrared spectroscopy (FTIR), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), Brunauer-Emmett-Teller (BET) analyzer, field emission scanning electron microscopy (FESEM), and transmission electron microscopy (TEM). Ni-Zr/MSN were then cast onto a modified glassy carbon electrode (Ni-Zr/MSN/GCE) as dopamine (DA) sensor. Under optimal conditions, the sensor showed a linear concen-tration relationship in the range of 0.3 µM–0.1 mM with a limit of detection of 0.13 µM. The relative standard deviation for 0.1 mM DA solution was 2.1 % (n = 5). The presence of excess catechol, saccharose, glycine, lactose, uric acid, and Cr3+, Fe2+ and Na+ as interferents was negligible, except for uric acid in 10-fold excess. The analytical recovery of the sensor was successfully demonstrated by the determination of DA in DA-containing medicine and wastewater samples. The results presented herein provide new perspectives on Ni-Zr/MSN as a potential nanomaterial in the development of DA sensors.
Original language | English |
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Pages (from-to) | 463-474 |
Number of pages | 12 |
Journal | Journal of Electrochemical Science and Engineering |
Volume | 12 |
Issue number | 3 |
DOIs | |
State | Published - 13 Jun 2022 |
Bibliographical note
Publisher Copyright:© 2022 by the authors; licensee IAPC, Zagreb, Croatia.
Keywords
- 3,4-Dihydroxyphenethylamine
- Porous material
- electrochemical sensor
- modified GC electrode
- nickel-zirconia
- silica nanoparticles
ASJC Scopus subject areas
- Chemical Engineering (miscellaneous)
- Colloid and Surface Chemistry
- Materials Chemistry
- Electrochemistry