Performance Evaluation of Platinum Nanoparticle-Coated Titanium Electrodes

摘要

Three noble metal nanoparticlecoated electrodes-Pt nanoparticlecoated Ti, Pt nanoparticle-loaded titanium dioxide (TiO2) nanotube (TiNT) array, and Pd nanoparticle-coated Tiwere developed via a facile two-step process. Of the three, the Pt nanoparticle- coated Ti and Pt nanoparticleloaded TiNT array showed excellent adhesion of the nanoparticles to the substrate. These electrodes also exhibited enhanced electrochemical activity for Ce oxidation compared to polycrystalline Pt electrodes. The performance of the Pt nanoparticle-loaded TiNT array electrode was better than that of the Pt nanoparticle-coated Ti electrode even after 1,000 h of exposure to corrosive nitric acid (HNO3) conditions, which demonstrated the capability of the electrode for use in industrial applications.