A novel hybrid carbon materials-modified electrochemical sensor used for detection of gallic acid

Novel hybrid carbon materials such as activated carbon-carbon nanotubes (AC-CNTs) and spheres/activated (CSs/AC-CNTs) based on (AC) derived from the pits of Algerian date palm have been prepared characterized. In addition, paste electrodes graphite (GC) cavity microelectrode (CME) modified with these were used to detect gallic acid at pH = 7 using square wave voltammetry method (SWV). The conductivity measurements revealed that CSs/AC-CNTs is more conducting than AC-CNTs. SWV showed oxidation current was directly proportional concentrations (from 0 0.00536 M) lowest limit detection (LOD), reaching 6.43 µM 3.64 GC/CSs/AC-CNTs electrode CME/GC/CSs/AC-CNTs sensor, respectively. reproducibility stability studied sensor confirmed by relative standard deviation response (RSD Reproducibility 1.44% RSD Stability 3.7%).