Formic Acid Electrooxidation by a Platinum Nanotubule Array Electrode
Figure 5
(a) Cyclic voltammograms for the electro-oxidation of formic acid (0.25 M HCOOH in 0.5 M H2SO4) on the 100 nm Pt nanotube at 1, 10, 50, and 100 mV/s. (b) Cathodic formic acid oxidation peak current versus square root of scan rate for 100 nm Pt nanotubule, 200 nm Pt nanotubule, and Pt black electrodes. Trendlines represent a linear regression best fit of the data with values of 0.95, 0.96, and 0.97, respectively.
