Electrocatalysis of a SiC particle-modified glassy carbon electrode for the oxidation of adrenaline in a KRPB physiological solution

Abstract

The electrocatalytic properties of a SiC particle-modified glassy carbon electrode (MGC) for adrenaline oxidation were studied by cyclic voltammetry, double- potential slep chronoculometry and electrochemical impedance spectroscopy in a pH 7.4 physiological Kres–Ringer phosphate buffer (KRPB) solution. It was shown that modification of the electrode with SiC particles has a marked electrocatalytic effect on the electrochemical reaction of adrenaline, i.e., the activity and the reversibility of the MGC electrode were significantly improved compared to an ummodified electrode. This was attributed to the adsorption effect of the electroactive adrenaline molecules on the MGC electrode surface.

Keywords

• adrenaline
• SiC particle
• glassy carbon
• electrocatalysis