Abstract
• Electrodeposited a thin film of gold-curcumin nanocomposite on the surface of GCE using a galvanostatic current. • Electrocatalytic oxidation of Gly and EG with a low activation energy of 20.7 and 49.7 kJ mol −1 , respectively. • Low onset potential during electrooxidation of Gly and EG at −0.17 V and −0.14 V, respectively. We report efficient electrocatalytic oxidation of glycerol (Gly) and ethylene glycol (EG) using a thin film of gold-curcumin (Au-CM) nanocomposite deposited on a glassy carbon electrode. The nanocomposite was synthesized using a galvanostatic technique in a two-electrode system with a very low current of 0.5 mA. Extensive characterization confirmed that the deposit consists of gold nanoparticles in a porous curcumin envelope. The Au-CM/GCE showed excellent catalytic activity for the electrocatalytic oxidation of Gly and EG with a low activation energy of 20.7 and 49.7 kJ mol –1 and a low onset potential of –0.17 V and –0.14 V, respectively.
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