In this work electrochemical kinetics of nitrate reduction was investigated on solid cathodes such as gold, titanium and aluminum. Enhancement of current density with increase in concentration of nitrate was observed with respect to the background in case of all electrode materials. The apparent electrochemical reaction order (14) for nitrate reduction was evaluated at various cathodes. The reaction order for the electro-reduction of nitrate at titanium showed dependence on electrode potential. Under the similar reactions conditions the electroreduction of nitrobenzene was also studied on the titanium electrode using cyclic voltammetry.
Electrochemical oxidation of p-chloroaniline in 0.1 M sodium perchlorate in pure acetonitrile was studied on gold surface using cyclic and normal pulse voltammetry. Mechanistic interpretation of the voltammetric results is outlined in terms of peak (or half wave) potential dependence on scan rate and concentration of p-chloroaniline.
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