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

UZUN D., Güllü V.

International Journal of Environmental Analytical Chemistry, vol.105, no.5, pp.1156-1171, 2025 (SCI-Expanded, Scopus) identifier identifier

  • Publication Type: Article / Article
  • Volume: 105 Issue: 5
  • Publication Date: 2025
  • Doi Number: 10.1080/03067319.2023.2287124
  • Journal Name: International Journal of Environmental Analytical Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Agricultural & Environmental Science Database, Aquatic Science & Fisheries Abstracts (ASFA), CAB Abstracts, Chemical Abstracts Core, Chimica, Compendex, Environment Index, Food Science & Technology Abstracts, Pollution Abstracts, Veterinary Science Database
  • Page Numbers: pp.1156-1171
  • Keywords: catechol, differential pulse voltammetry, electrosynthesis, Triazole-thiol derivative
  • Gazi University Affiliated: Yes

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.