Abstract
In this paper, thin layers of Prussian Blue (PB) have been prepared by electrodeposition method from an aqueous solution containing nitrate precursors. PB films have been electrodeposited, at constant potential of 0.4 V versus SCE at five different deposition times of 25 s, 50 s, 75 s, 100 s, and 150 s employing the chronoamperometry method. The samples have been characterized by field emission scanning electron microscopy (FESEM), energy-dispersive x-ray spectrometer (EDX), and cyclic voltammetry (CV) techniques. CV and EDX analysis confirm the formation of PB on the ITO substrates. The PB sample prepared at higher deposition time shows nonuniform morphology with higher effective surface in FESEM images. The CV method has been employed to investigate the PB to Prussian White (PW) conversion. The extraction charge densities, insertion charge densities, and degradation degree parameter have been calculated according to CVs. The results reveal that the samples have reasonable reversibility and the samples with higher deposition times (thicker films) show lower degradation degree.
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