Palladium Coated Steel Electrode - Preparation, Characterization and Their Use of Borohydride Determination

Abstract

The purpose of this study is the fabrication of a cost effective palladium coated steel electrode (pd-S) for the direct analysis of the sodium borohydride (BH₄^-). The electrode was prepared by the cyclic voltammetry. The electrode was observed to have a high catalytic effect on the oxidation of BH₄^-. The Pd-S surface was characterized with profilometri, scanning electron microscope, ferrocene test and electrochemical impedance spectroscopic technique. The effects of  borohydride concentration, scan rate and pH upon the electrode reaction were examined. The concentrations of BH₄^- were found with an error of 0.35-0.53%. The interference of  the cations and anions have been investigated.  

Keywords

• Palladium
• borohydride
• determination
• surface characterization

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