Document Type: Original Research Article

Authors

Department of Chemistry, Payame Noor University, PO BOX 19395-3697 Tehran, IRAN

Abstract

In this research, we reported a novel modified carbon ceramic electrode (CCE) using Ni/Al Layered double hydroxide as modifier was fabricated by sol-gel technique. The Ni/Al Layered double hydroxide modified sol gel derived carbon ceramic (Ni/Al LDH-SGD-CC) electrode was used for electrocatalytic oxidation of acetaldehyde. The oxidation of acetaldehyde happens at the potential where Ni (III) species are generated. The modified electrode exhibited remarkable electrocatalytic activity for the oxidation of acetaldehyde under alkaline conditions, indicating that the anodic oxidation of acetaldehyde could be catalyzed at Ni/Al LDH-SGD-CC electrode. This proves that the Ni/Al LDH bears the main role in electro-catalytic oxidation of acetaldehyde. Finally, by using the cyclic voltammetry, chronoamperometric and tafel plots method, the catalytic rate constant, charge-transfer coefficient, the number of electrons involved in the rate-determining step (nα) and exchange current density for chemical reaction of acetaldehyde was estimated as 0.356 × 104 cm3 mol-1 s-1, 0.51, 1 and 2.76×10-8 Acm-2 respectively.

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