Electrosynthesis of a triazole derivative on the glassy carbon surface for the electrochemical determination of catechol

ABSTRACT

In this experiment, an electrosynthesis of a triazole-thiol derivative (3-amino-1,2,4-triazole-5-thiol (3ATT)) was carried out on the glassy carbon electrode (GCE) to fabricate an electrochemical sensor to determine catechol (CC) by voltammetry. The characterisation of the modified electrode (3ATT-GCE) was examined by cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). Electrochemical oxidation of CC by the differential pulse voltammetry (DPV) with 3ATT-GCE exhibited a perfectly wide linear response in the CC concentration range of 0.088 to 10.5 µM and 10.5 to 629 µM with a detection limit (LOD) of 0.024 µM (3 s/m). Furthermore, it indicated excellent reproducibility and repeatability. The fabricated sensor with a large surface area and high electrical conductivity was successfully employed to determine CC in tap water without being affected by interfering substances.

KEYWORDS:

• Triazole-thiol derivative
• electrosynthesis
• catechol
• differential pulse voltammetry

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/03067319.2023.2287124.

Correction Statement

This article has been republished with minor changes. These changes do not impact the academic content of the article.

Additional information

Funding

The work was supported by the Gazi Üniversitesi.