Effect On The Anodization Process Of Titanium Through Surface Modification With Electrodeposited Platinum Nanoparticles

摘要

In this study we explored the galvanostatic electrodeposition of platinum nanoparticles on titanium electrodes, mechanically polished and electropolished, and its effect on the anodization process and electrochemical properties of the Pt/Ti and Pt/TiO_2/Ti systems. The working hypothesis was that metallic nanoparticles would contribute to the electron transfer promoting the generation of reactive species on the titanium surface and the production of TiO_2. Cyclic voltammetry and scanning electron microscopy (SEM) were performed to evaluate the electrodes obtained. An activity towards the hydrogen evolution reaction is observed in the Pt/Ti/TiO_2, higher than for Pt/Ti electrodes to the larger surface area of the former. Contrary to what was expected, the presence of the platinum nanoparticles on titanium reduces the localized corrosion of the electrode's surface.