Electrodeposited platinum nanostructure films on the tantalum for ethanol electro-oxidation

Abstract

A new catalyst, platinum nanostructure electrodeposited on tantalum substrate (Pt/Ta), was prepared. The morphology and surface analysis of Pt/Ta electrodes were investigated using SEM and EDX, respectively. Electrochemical characteristics of ethanol oxidation on Pt/Ta electrodes were investigated via cyclic voltammetric in acidic solutions. The results were compared to those at a smooth platinum electrode. It was found that the electro-catalytic oxidation of ethanol on the Pt/Ta electrode increases the rate of ethanol electro-oxidation several times larger than a smooth platinum electrode and confirmed the better electro-catalytic activity and stability of Pt/Ta electrodes.

Electroplating of Pt–Ni–Cu nanoparticles on glassy carbon electrode for glucose electro-oxidation process

“…Platinum nanoparticles perform well in the alkaline medium as well as in neutral environment [13]. Recently, electrodeposition process has been introduced as a useful and controllable alternative method to synthesise electrocatalyst on carbon substrate [14][15][16][17][18]19]. High activity and chemical stability of platinum have led to its use as an electrocatalyst.…”

“…Despite particular advantages, being expensive and limited world supply of Pt are of the main obstacles to widespread commercialisation of fuel cell technology [14]. Therefore, decreasing the Pt percentage or its substitution with inexpensive metals are important [14][15][16][17]. Direct electrochemical reduction of supported-Pt nanoparticles is a relatively convenient method to construct nanostructure-based electrodes.…”