Optical, electrical properties and OH group adsorption of deposits electrolysis

Abstract

An electrochemical method, using electrical energy, decompose water into hydrogen and oxygen, which is more important to pH values varying between the intervals {7.9 - 14} and {2-6 - 5}, a degree of salinity lower than 90 g/L and greater than 130 g/L. While the formed film and the resultant powders were characterized by FTIR, UV- Visible and complex impedance. Thus we see that the electrolysis of water causes a change in the stretching vibrations Ï…_OH, namely the presence of Cu-O vibration (solid 520-630 cm^-1). A spectral shift in the OH absorption band which is a positive indicator of the interaction of the metal particles dispersed in the electrolyte. Comparison of measurements of the value of pH of the electrolyte showed that acid pH values which increase, which is not the case for basic media and which shows a decrease. A peak of UV-visible absorption at 220 nm was recorded for the solution after production, pH = 8, and two bands at 320 and 360 nm due to hydroxyl compounds that are detected. Furthermore, the complex impedance diagrams show capacitive loops at the high frequency domain, and relaxation process of the electrolyte for different pH values.