Sains Malaysiana 38(6)(2009): 873–876

Electrochemical Oxidation of Propionaldehyde and Butyraldehyde

on a Gold Electrode

(Pengoksidaan Elektrokimia Propionaldehid dan Butiraldehid pada Elektrod Emas)

Amirah Ahmad & Mohamed Rozali Othman*

School of Chemical Sciences and Food Technology

Faculty of Science and Technology

Universiti Kebangsaan Malaysia, 43600 UKM Bangi, Selangor D.E., Malaysia

Received: 13 January 2009 / Accepted: 15 April 2009

ABSTRACT

The electrooxidation of propionaldehyde and butyraldehyde on a gold electrode was studied by cyclic voltammetry in alkaline media. Electrooxidation of both aldehydes showed the appearance of two anodic peaks. Another oxidation peak on a newly generated electrode surface was observed after the corresponding reduction peak for both aldehydes.

Keywords: Butyraldehyde; cyclic voltammetry; gold electrode; propionaldehyde

ABSTRAK

Pengoksidaan elektrokimia propionaldehid dan butiraldehid pada elektrod kepingan emas dikaji melalui kitar voltamogram dalam larutan elektrolit alkali. Pengoksidaan elektrokimia kedua-dua aldehid menunjukkan kehadiran dua puncak anodik. Puncak anodik kedua hadir semasa imbasan keupayaan negatif pada permukaan elektrod terjana semula selepas tindak balas penurunan berlaku.

Kata kunci: Butiraldehid; elektrod emas; voltametri berkitar; propionaldehid

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*Corresponding author; email: rozali@ukm.my