Izvorni znanstveni članak
https://doi.org/https://doi.org/10.5599/jese.2652
Multimetodolological characterization of an optimized carbon/np TiO2 nanoparticles electrode
Saša Mićin
orcid.org/0000-0002-2220-435X
; University of Banja Luka, Faculty of Security Sciences, Banja Luka, Bosnia and Herzegovina
Nadica Ivošević DeNardis
; Ruđer Bošković Institute, Zagreb, Croatia
Sanja Martinez
; University of Zagreb, Faculty of Chemical Engineering and Technology, Zagreb, Croatia
Maja Levak Zorinc
; Ruđer Bošković Institute, Zagreb, Croatia
Borislav N. Malinović
; University of Banja Luka, Faculty of Security Sciences, Banja Luka, Bosnia and Herzegovina
Vedrana Špada
; Istrian University of Applied Sciences, Pula, Croatia
Sažetak
This present work describes an optimized electrochemical sensor made of a carbon electrode modified with TiO2 nanoparticles, which was used for the electrochemical characterization of polyphenols in natural wine. The aim of this study is to investigate the influence of specific binders and nanoparticles on the physicochemical and electro-chemical properties of modified carbon electrodes. The imaging techniques (scanning electron microscopy with energy dispersive X-ray spectroscopy, atomic force microscopy) showed that the electrode material becomes denser with a higher binder content and that TiO2 nanoparticles are almost evenly distributed despite the manual preparation of the carbon paste. The results show that the modified carbon paste with 40 vol.% paraffin oil and 8 wt.% TiO2 nanoparticles has the lowest surface roughness, anodic current and electroactive surface area, which is consistent with the reported lowest resistance, as well as the highest degree of reversibility compared to the standard reversible redox system ([Fe(CN)6]3-/4-) within the electrode material.
Ključne riječi
Carbon-based electrode; cyclic voltammetry; Fourier transform infrared spectrometry; scanning electron microscopy; atomic force microscopy
Hrčak ID:
330721
URI
Datum izdavanja:
22.4.2025.
Posjeta: 0 *