Electroanalysis, Год журнала: 2025, Номер 37(2)
Опубликована: Фев. 1, 2025
Palladium nanoparticles supported on a pretreated carbon substrate (Pd/C) were synthesized from surfactant‐free microwave‐heated ethylene glycol without any external reducing agent and characterized by high‐resolution electron transmission microscopy, thermogravimetric analysis, X‐ray diffraction analysis. Cyclic voltammetry was effectively employed to scrutinize the electrochemical processes such as Pd hydrogen interactions including adsorption, absorption, desorption, evolution well Pd–oxygen like oxide formation subsequent reduction of layer. The oxidation palladium clearly indicated at potential ranging 0.78 1.20 V versus reversible electrode (RHE) in anodic scan direction whereas corresponding peak observed with broad centered 0.79 RHE reverse scan. Therefore, an accurate evaluation EASA measurements ultrathin film electrodes acidic (0.5 mol L −1 H 2 SO 4 , pH ∼ 1) media successfully conducted. Moreover, steady‐state cyclic (CV) have been conducted lowest rate 1 mV s enabling obtaining desorption reaction features concurrent. Besides, Pd/C electrocatalyst exhibited 129 overpotential yielding cathodic current density 10 mA cm −2 toward reaction. This study outlines description practical experimental conditions essential for accurately determining that facilitates comprehensive their performance.
Язык: Английский