Palladium Electrodeposition on Carbon Black Films in an Acid Environment

Electrochemical deposition of palladium on nanostructured carbon black films electrodes (nCBFE) supported in glassy carbon (GC) was studied by cyclic voltammetry of reversal potential (E lambda), chronoamperometry and the anodic stripping voltammetry techniques in the electrolytic system 10-3M PdCl2; 1M NH4Cl pH=0. The cyclic voltammetry studies allowed us to characterize the electrochemical response of nCBFE and establish that it can be used as an electrode material for palladium electrodeposition. The chronoamperometry and anodic stripping voltammetry studies allowed us to define a specific potential range for palladium deposition without hydrogen evolution (-0.09 to -0.19 V vs. SCE). It should be noted that the hydrogen discharge takes place at more negative potentials. Moreover, it was possible to evaluate the corresponding mass of metallic palladium in a wide potential range with and without hydrogen discharge influence.