Izvorni znanstveni članak
https://doi.org/10.5599/jese.1415
MnO2 nanorods modified screen-printed electrode for the electrochemical determination of Sudan dye in food sample
Peyman Mohammadzadeh Jahani
; Department of Chemistry, Kerman Branch, Islamic Azad University, Kerman, Iran
Sayed Ali Ahmadi
; School of Public Health, Bam University of Medical Sciences, Bam, Iran
Sažetak
A novel MnO2 nanorods modified screen-printed electrode was fabricated and used as a voltammetric sensor for Sudan determination. MnO2 nanorods were characterized using Field emission-scanning electron microscopy (FE-SEM). Electrochemical measurements were performed using cyclic voltammetry (CV), linear sweep voltammetry (LSV), differential pulse voltammetry (DPV), and chronoammperometry (CA). The MnO2 nanorods on the electrode surface act as an excellent catalyst for the Sudan oxidation reaction. Our modified electrode presents good electrocatalytic activity toward Sudan, a short response time of <10 s, a low detection limit of around 0.08 µM, and linear detection range from 0.25 to 300.0 µM.
Ključne riječi
Voltammetric sensor; cyclic voltammetry; electroanalysis; Sudan red
Hrčak ID:
286872
URI
Datum izdavanja:
7.12.2022.
Posjeta: 562 *