Porous gold-curcumin nanocomposite for enhanced electrooxidation of glycerol and ethylene glycol

•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...

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Bibliographic Details
Published in:Materials letters 2023-01, Vol.330, p.133212, Article 133212
Main Authors: Prasad Nayak, Sai, Ventrapragada, Lakshman K., Rao, Apparao M., Kiran Kumar, J.K.
Format: Article
Language:English
Subjects:
Electrodeposition
Ethylene glycol
Glycerol
Nanocomposite
Oxidation
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Summary:•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 the 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.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2022.133212