Electrocatalytic Oxidation of n-propanol on Ni/Al LDH Nanoparticles

The general electrochemical behavior of n-propanol has been investigated onni/al layered double hydroxide nanoparticles modified carbon ceramic electrode (ni/alldh/nmcc) is characterized by cyclic voltammetry, steady state polarization andchronoamperometry in alkaline media a good redox behavior of ni(iii)/ni(ii) couple at thesurface of these electrodes can be observed. the results showed that the electrocatalyticactivity of the ni/aldh/nmcc electrode is much higher than those of unmodified carbonceramic electrode under similar experimental conditions. the apparent catalytic rate constant(k) and transfer coefficient (?) were determined by cyclic voltammetry and wereapproximately 0.314×104 cm3 mol-1 s-1 and 0.51, respectively. the modified electrodeshows a stable and linear response in the concentration range of 0.01 to 0.1 mol l?1 with acorrelation coefficient of 0.9919. the modified cces containing ni/al ldh nanoparticlesshow good repeatability, short response time, long term stability (4 months) and excellentcatalytic activity.