Carbon dots with tunable concentrations of trapped anti-oxidant as an efficient metal-free catalyst for electrochemical water oxidation

Abstract

Carbon dots, containing keto-groups as active sites and the highest abundance of an anti-oxidant, 5-hydroxymethyl-2-furaldehyde, efficiently catalyse oxygen evolution reaction in alkaline medium and generate 10 mA cm⁻²at 0.21 V overpotential..