CoFe2O4 NPs supported on graphitic carbon nitride as inexpensive electrocatalysts for methanol oxidation reaction

Abstract

Electrochemical methanol oxidation (MOR) is considered an efficient route for generating clean energy with low pollutant emissions. In this study, we synthesized graphitic carbon nitride (GCN/g-C3N4) supported CoFe2O4 with different weights (100, 200, and 300 mg) of GCN by using the hydrothermal synthesis method; the synthesized cost-effective electrocatalysts have been denoted as g-CF1, g-CF2, and g-CF3 respectively. The electrochemical performance of the synthesized catalysts was studied using cyclic voltammetry (CV), chronoamperometry (CA), and electrochemical impedance spectroscopy (EIS) techniques. In an alkaline medium, the g-CF2 electrocatalyst showed the best MOR activity, a larger electrochemically active surface area, and better stability compared to those of pure GCN, g-CF1, and g-CF3 electrocatalysts.