Highly efficient modified lead oxide electrode using a spin coating/electrodeposition mode on titanium for electrochemical treatment of pharmaceutical pollutant.

Author(s) Boukhchina, S.; Akrout, H.; Berling, D.; Bousselmi, L.
Journal Chemosphere
Date Published 2019 Apr

In this study, Ti/TiO/PbO anodes consisting of a PbO coating growth on the TiO interlayer deposited on titanium substrates were prepared combining different deposition technics: electrochemical method using anodization (Anod), electrodeposition (EL), and sol gel spin coating (SG). Different kinds of anodes have been tested for the removal of ampicillin, a pharmaceutical pollutant, from water. The structure and the surface morphology of the prepared multiple coatings were characterized by scanning electron microscopy and Energy-Dispersive X-ray spectroscopy respectively. Electrochemical impedance spectroscopy was also investigated in order to study the electrocatalytic activity of the anodes. The performance of the electrodes was evaluated through high performance liquid chromatography and chemical oxygen demand (COD) measurements. It was noticed that ampicillin could be mineralized by anodic oxidation process using Ti/TiO/PbO anodes. The best results were obtained for Ti/TiO/PbO as anode with a 64% of COD removal after 300 min of treatment and a fast decrease in the amount of ampicillin was reached after almost one hour. Experimental results demonstrate that Ti/TiO/PbO anode presents the best ability for the degradation of ampicillin through anodic oxidation compared to the Ti/TiO/PbO and Ti/TiO/PbO electrodes.

DOI 10.1016/j.chemosphere.2019.01.057
ISSN 1879-1298
Citation Chemosphere. 2019;221:356365.

Related Applications, Forms & Industries