Electrodetermination of Gallic Acid Using Multi-walled Carbon Nanotube Paste Electrodes and N-Octylpyridinium Hexafluorophosphate
Loading...
Date
2022
Journal Title
Journal ISSN
Volume Title
Publisher
WILEY-V C H VERLAG GMBH
Abstract
In this work, the determination of gallic acid was performed using surface-renewable carbon paste electrodes fabricated with multi-walled carbon nanotubes (MWCNT) and a mixture of N-octylpyridinium hexafluorophosphate (OPyPF6) ionic liquid with mineral oil (MO) as binder. This system shows remarkable amperometric sensor characteristics and promotes a better electronic transfer. An electroanalytical study of gallic acid shows a linear range from 4.98 +/- 0.25 to 74.1 +/- 2.2 mu mol L-1, with R-2=0.9958 and an experiment a limit of detection of 2.70 +/- 0.08 mu mol L-1 (S/N=3), and a sensitivity of 0.029 mu A mu mol(-1) L.
Description
Keywords
modified electrode, ionic liquids (IL), gallic acid (GA), carbon nanotube (CNT), ELECTROCHEMICAL SENSOR, IONIC LIQUIDS, PHENOLIC-COMPOUNDS, ELECTROCATALYTIC OXIDATION, COMPOSITE ELECTRODE, PERFORMANCE, GREEN, BEHAVIOR, NANOPARTICLES, DERIVATIVES