Electrocatalyst oxidation of formic acid on Pt nanoparticles/Ti electrode

摘要

A potent catalyst, platinum nanoparticles (Pt-NPs) supported on titanium substrate (Pt-NPs/Ti), was prepared. The morphology and surface analysis of Pt-NPs/Ti electrodes were investigated using scanning electron microscopy and energy dispersive X-ray spectroscopy respectively. The results indicate that Pt-NPs are homogeneously deposited on the surface of titanium plates. Electrochemical characteristics of formic acid oxidation on Pt-NPs/Ti electrodes were investigated via cyclic voltammetric in mixed 0.1M formic acid and 0.1M H_2SO_4 solutions. The results were compared to those at a polycrystalline smooth platinum electrode. It was found that the electrocatalytic oxidation of formic acid on the Pt-NPs/Ti electrode increases the rate of formic acid electro-oxidation several times larger than a smooth platinum electrode and confirmed the better electrocatalytic activity and stability of Pt-NPs/Ti electrodes.