Study of Electrocatalytical Reduction of Nitrate on Copper Electrode

 

H. Massaï,^1,2B.B. Loura,³M.J. Ketcha,² A. Chtaini^1,*

 

¹ Equipe d’Electrochimie et des Matériaux Inorganiques, Université Sultan Moulay Slimane, Faculté des Sciences et Techniques, BP 523, Beni-Mellal, Morocco

² Laboratoire de Chimie Physique et Théorique, Université Yaoundé1, Faculté des Sciences, BP 812, Yaoundé, Cameroun

³Laboratoire de Chimie Physique, Université de Ngaoundéré, Faculté des Sciences, BP 454, Ngaoundéré, Cameroun

 

Received 21 May 2009; accepted 23 November 2009

 

Abstract

This work aims to investigate the electro reduction of nitrate at copper elecrode in HClO₄ medium by the linear sweep voltammetry and convuctivity measurement methods. Two charge transfer steps were detected, the first one corresponding to adsorption and reduction of nitrate to nitrite and the second step consists of reducing nitrate to monoxide of nitrogen.

Keywords: electroreduction, nitrate, copper, linear sweep voltametry, conductivity, square wave voltametry.

 

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^*Corresponding author. E-mail address: chtainia@yahoo.fr